Jobs at Djinni

Join a high-impact cybersecurity project focused on protecting applications from automated attacks and malicious activity. We are looking for a Senior Data Engineer who thrives in autonomous environments, enjoys solving complex data challenges, and is ready to drive modernization initiatives across scalable data systems.

You will become a core member of a small, highly proactive engineering team working on a large-scale cybersecurity product. The role requires deep involvement in understanding existing systems, including legacy code and interconnected services, identifying inefficiencies and technical gaps, and driving meaningful improvements across the platform. You will collaborate closely with product engineering teams, influence technical decisions, and contribute to both immediate optimizations and long-term platform evolution.

As part of Sigma Software, you will collaborate with experienced international teams and have the opportunity to shape scalable data infrastructure used in cybersecurity products operating at scale. We value ownership, strategic thinking, and technical excellence, offering an environment where engineers can influence architectural decisions, drive meaningful improvements, and continue growing professionally.

CUSTOMER

Our Customer is a global cybersecurity company delivering advanced digital protection solutions for businesses, organizations, and communities worldwide. Operating across multiple cybersecurity domains, the company focuses on identifying vulnerabilities, preventing threats, and strengthening digital resilience through scalable and reliable security products.

PROJECT

The project focuses on developing and improving a cybersecurity solution designed to protect applications from automated attacks and malicious traffic. The team works on scalable, high-performance data infrastructure powering security analytics, monitoring, and detection capabilities. The environment combines modernization of legacy systems with the development of reliable and scalable data workflows, requiring strong ownership and close collaboration with cross-functional engineering teams.

Key Technologies: Snowflake, DBT, SQL, Python, Elastic Stack, Airflow

RESPONSIBILITIES

• Maintain and enhance existing data processes with a focus on reliability, scalability, and performance optimization
• Analyze and deeply understand existing data models, workflows, tables, and processing jobs
• Identify technical gaps, bottlenecks, inefficiencies, and opportunities for architectural improvements
• Design, optimize, and support large-scale data pipelines and transformation processes
• Drive modernization initiatives across the data platform and contribute to long-term architectural evolution
• Optimize complex SQL queries and improve data processing latency and efficiency
• Collaborate with product engineering and cross-functional teams on technical solutions and implementation strategies
• Contribute to both short-term delivery goals and long-term platform development initiatives
• Ensure adherence to best practices in data engineering, system reliability, and performance optimization
• Participate in technical discussions, solution design, and continuous improvement initiatives

REQUIREMENTS 

• 5+ years of commercial experience in Data Engineering
• Expert-level Python skills
• Expert-level SQL skills with practical experience optimizing complex queries for performance and scalability
• Strong hands-on experience with DBT for data transformation and modeling
• Solid understanding of database concepts, including DDL, DML, indexing, normalization, and advanced SQL techniques
• Hands-on experience working with Snowflake
• Experience with Elastic Stack technologies
• Proven experience designing, building, and maintaining large-scale data pipelines
• Strong analytical thinking and problem-solving skills
• Ability to work independently in a high-autonomy engineering environment
• Experience driving technical initiatives from idea through implementation
• Strong communication and collaboration skills
• Upper-Intermediate English level or higher

WILL BE A PLUS

• Experience with Airflow for workflow orchestration

Intetics Inc., a global technology company providing custom software development and digital solutions, is looking for a Technical Coordinator / Solution Engineer to join our team.

We are seeking a hands-on technical professional who will be responsible for deployment, configuration, automation, troubleshooting, and operational support of an enterprise software solution within a secure environment.

This role is ideal for an experienced Infrastructure Engineer, DevOps Engineer, Systems Engineer, or Technical Support Engineer who enjoys solving complex technical problems, working directly with users, and ensuring the reliable operation of business-critical systems.

Responsibilities

• Deploy, configure, and maintain local server-side software components.
• Set up and support application environments, databases, integrations, and supporting infrastructure.
• Develop and maintain automation and orchestration scripts.
• Support data processing, import/export, synchronization, and workflow execution.
• Monitor system health, identify issues, and proactively perform troubleshooting.
• Investigate and resolve setup, configuration, integration, and environment-related problems.
• Work with APIs and connected systems to support data exchange and operational workflows.
• Collaborate with remote engineering and product teams to implement changes and enhancements.
• Maintain technical documentation, operational procedures, and troubleshooting guides.
• Support software releases, upgrades, and infrastructure changes.
• Participate in testing, validation, acceptance activities, and production readiness reviews.
• Train customer-side users and technical personnel when required.

• Act as the primary technical point of contact for operational and support-related matters.

   

Requirements

Required Qualifications

• Strong experience with Linux and/or Windows Server administration.
• Experience deploying, configuring, and supporting enterprise applications.
• Hands-on experience with Bash, PowerShell, or Python scripting.
• Experience with automation and operational support processes.
• Good understanding of networking fundamentals (TCP/IP, DNS, VPN, HTTPS, firewalls).
• Experience troubleshooting application, infrastructure, and integration issues.
• Familiarity with databases and SQL.
• Experience working with APIs and system integrations.
• Strong analytical and problem-solving skills.
• Ability to work independently and communicate effectively with distributed teams.
• English level sufficient for participation in technical meetings and communication with international teams.

Nice to Have

• DevOps, Infrastructure Engineering, or Site Reliability Engineering experience.
• Experience with cloud platforms (AWS, Azure, GCP).
• Experience with Docker, Kubernetes, CI/CD pipelines, or Infrastructure as Code tools.
• Experience with monitoring and observability platforms (Grafana, Prometheus, ELK, Zabbix, etc.).
• Experience supporting secure or highly regulated environments.
• Knowledge of GIS, visualization systems, spatial data, or 3D platforms.
• Customer-facing implementation, deployment, or technical consulting experience.

Work Format

• Long-term project engagement.
• Hybrid work format with periodic on-site meetings in Kyiv.
• Flexible workload depending on project phase, implementation activities, updates, and support needs.

• Increased involvement during deployment, configuration, integration, and acceptance stages.

   

What You Should Know

This is not a pure software development role and not a project management role.

The primary focus is:

• deployment and configuration;
• infrastructure and environment support;
• automation and operational excellence;
• troubleshooting and incident investigation;
• customer collaboration and technical coordination.

We are looking for someone who enjoys taking ownership of technical environments and driving solutions from implementation through long-term support.

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications and regulatory technologies.

We are looking for a Team Lead SMM.

Requirements:

- Relevant Experience: 3–4+ years of experience in SMM/Digital in a leadership role (Team Lead / Head of Social / SMM Director).
- Middle Management Experience: Proven track record of managing managers or team leads, not just individual contributors.
- Data-Driven & Unit Economics: Strong grasp of business metrics (ROMI, CAC, CPA, CPL, LTV, CR). You know how to calculate the ROI of every dollar spent.
- Financial Planning: Experience in media planning, budget allocation, and defending marketing budgets.
- Analytics & Dashboards: Experience with end-to-end analytics and data visualization tools (Tableau, Meta, or advanced Excel/Google Sheets).
- Process-Oriented Approach: Experience implementing goal-setting frameworks (OKRs/KPIs) and establishing interaction workflows (SLAs) with cross-functional departments.
- SMM Expertise: Deep understanding of social media algorithms, targeted advertising principles, content marketing, and reputation management (Brand Safety).

Soft Skills:

- Delegation (Zero Micromanagement): Ability to let go of daily operations. You set goals for managers and monitor key milestones/metrics without manually checking every piece of copy or creative.
- Analytical & Business Thinking: A habit of relying on data rather than intuition to make decisions.
- Persuasion & Pitching Skills: Ability to translate SMM jargon into business language. Capable of justifying to the stakeholders results and initiatives.
- Leadership & Empathy: Ability to mentor managers, conduct high-quality 1-on-1s, resolve conflicts, and prevent team burnout.
- Proactivity & R&D Mindset: Readiness to constantly test new hypotheses, discover unconventional setups, and reject the "we've always done it this way" mentality.

Responsibilities:

1. Strategy Execution & Initiative Development:
- Decomposing the global SMM strategy into actionable roadmaps and tactical plans for the geo's and subordinate units.
- Defining and setting KPIs, OKRs, ensuring goal alignment across all team.
- Generating, providing business justification for, and pitching new initiatives, special projects, and tests.
- Continuously scouting the market and analyzing competitors to implement innovative approaches and formats within the teams.
2. Unit Economics & ROI Management:
- Tactical management of the allocated budget: distributing funds based on their performance and task priority.
- Strict monitoring of business, SMM metrics and audience acquisition, retention costs.
- Making data-driven decisions on scaling or pausing campaigns based on consolidated analytics provided by the Team.
- Preparing financial and resource justifications for the Head of SMM when requesting budget expansions, new hires, or software procurement.
3. Middle Management Leadership & Process Architecture:
- Direct supervision of Managers and Specialists: conducting regular 1-on-1s, performance reviews, and assessing the management effectiveness of their respective subgroups.
- Developing the leadership skills of subordinate Managers, providing mentorship, and assisting in resolving complex team conflicts or escalations.
- With Project Manager designing and optimizing internal business processes: developing SOPs (Standard Operating Procedures) and SLAs (Service Level Agreements) between SMM units and cross-functional departments.
- Ensuring a balanced workload across team and monitoring macro-level deadlines (without micromanaging individual execution).
4. High-Level Quality Assurance (QA) & Brand Safety:
- Implementing and maintaining QA systems for content and communications (conducting high-level audits of unit outputs for Tone of Voice and Visual ID compliance).
- Managing reputational risks (Brand Safety): ensuring teams strictly adhere to crisis response and community management protocols.
5. Analytics & Management Reporting:
- Consolidating performance data from the team into a unified, transparent dashboard system.
- Conducting deep-dive analyses of anomalies (both sudden metric drops and spikes) to identify root causes and patterns.
- Preparing regular executive reports for the Head of SMM, including key takeaways, performance forecasts, and strategic optimization proposals.
 

Our benefits to you:

☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more.

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed.

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided.

🏖Paid vacations, sick leave, personal events days, days off.

💵Referral program — enjoy cooperation with your colleagues and get the bonus.

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences.

🎯Rewards program for mentoring and coaching colleagues.

✈️In-house Travel Service.

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more.

🎳Other benefits could be added based on your location.

PrimeFox is looking for a strong Head of Affiliate for a new iGaming project focused on the Argentine market.

The project is preparing for launch. The product covers Casino, Sportsbook and Prediction Market on the SoftSwiss platform. The core infrastructure is already in place, including payment solutions and a local support team.

We are looking for a leader with deep expertise in Argentina, an established affiliate network and a proven record of scaling affiliate traffic.

Key responsibilities

• Develop and execute the affiliate strategy for the Argentine market.
• Build and grow the affiliate acquisition channel from scratch.
• Onboard strong affiliate partners and develop relationships with them.
• Negotiate and agree commercial models: CPA, RevShare, Hybrid.
• Manage traffic volume, quality and acquisition economics.
• Analyze FTD, CPA, NGR, ROI, retention and other performance metrics.
• Work closely with CRM, Product, BI and Finance.
• Set KPIs, forecasts and scaling plans.
• Own the agreed business targets.

What we expect

• Proven iGaming affiliate marketing experience in the Argentine market.
• Your own active network of affiliate partners for this GEO.
• Strong cases of attracting large volumes of high-quality traffic.
• Deep understanding of the Argentine Casino and/or Sportsbook market.
• Strong analytical skills and a solid grasp of iGaming unit economics.
• Experience building or scaling an affiliate department.
• Ability to make decisions independently and take ownership of results.

Nice to have: experience with SoftSwiss, launching iGaming brands from scratch, and expertise in both Casino and Sportsbook.

What we offer

• A role in launching an ambitious new iGaming project in Argentina.
• The opportunity to shape the affiliate strategy and influence commercial results.
• Direct work with the project’s C-level.
• Competitive compensation: fixed salary + performance bonus.
• Individual terms for candidates with exceptional expertise.

Important: we only consider candidates with real hands-on experience in the Argentine market.

If you have a strong partner network, proven results and the drive to build a new iGaming brand from the ground up, we would be glad to hear from you.

Project Responsibilities

Owning the test strategy for a data-collection platform spanning the worker app (WebView inside the main inDrive app), the back office, and backend services, from test plans through release sign-off. 
Testing media capture and upload in real-world conditions: photo, voice, video, and text across a wide range of Android/iOS devices, poor networks, interrupted and resumed uploads, and on-device pre-checks. 
Verifying complex business flows and state machines: task reservation and expiry, quotas and campaign auto-stop, submission statuses, review and rework cycles, labeling consensus, and buyer isolation between segments. 
Ensuring correctness of money and compliance flows: accruals, balances, payout batches and reconciliation, consent versioning and withdrawal, data erasure, and audit trails for every action. 
Building and maintaining end-to-end and API test automation in CI, plus load testing of the task queue and ingestion under peak traffic (e.g. after mass push notifications).

Candidate's Portrait

A QA Fullstack engineer with a strong background in both manual and automated testing, ready to build automation essentially from scratch 
Proficient in Java/Kotlin, with a level sufficient to write and maintain automated tests 
Understands the product’s business risks and can prioritize testing with a focus on money, compliance, and critical user flows 
Comfortable working across the mobile app (via WebView), web, API, and backend services, able to see the full picture 
Self-sufficient, capable of building out test strategy and process for a new product without existing infrastructure in place 
Russian Speaker

Must-haves

Experience in functional, integration, API, and E2E testing across the full user journey: onboarding and consent, task queue, data capture and upload, review, earnings, and payouts 
Automation experience in Java/Kotlin this is a new product with no existing automated tests, and the goal is maximum automation coverage 
Selenium/Selenide + Appium 
Strong experience in API automation (REST and/or gRPC), including tools such as Postman 
Understanding of microservices and event-driven architecture: retries, timeouts, idempotency, duplicate events, eventual consistency 
Experience testing financial flows: accruals, balances, batch payouts, reconciliation with third-party payout providers 
Understanding of data privacy requirements: consent management, data retention, erasure 
Experience testing time- and quota-based logic: TTL-based task reservations, expiry and reassignment, volume limits, targeting by country/language/segment 
Ability to investigate issues using logs, metrics, traces, databases, and message queues (Grafana, CloudWatch, Kibana, Kafka, SQL/MySQL) 
Experience working with CI/CD, Docker, AWS-based environments 
Ability to validate consistency across the mobile app, WebView, back office, backend APIs, and distributed services, and troubleshoot partial failures and partner/service outages 
Experience contributing to test strategy, requirements reviews, release validation, and production issue analysis with a focus on business risk

Nice-to-have

Experience testing media capture and upload on mobile devices (photo, voice, video, text): device fragmentation, permissions, unstable networks, resumable uploads, on-device validation 
Knowledge of JS/TS for automation 
Knowledge of Playwright/Cypress 
Experience testing integrations with external services: authentication, CRM, push notifications, payout partners, LLM providers, cloud storage (S3) 
Experience with load and performance testing (task queues, ingestion under peak load, e.g. after mass push notifications) 
Experience with Appium or other mobile automation frameworks a plus, but not required, as the current priority is API and web automation

About the project

Our client is a fintech company building a new digital banking and payments product from scratch. The platform will cover card and payment processing, integrations with banks and payment providers, and core financial services for end customers.

The product is at an early stage: architecture, team and roadmap are being shaped now, and the scope will be refined together with the team. You will join a mixed team of client and NerdySoft engineers. AI-assisted development is part of everyday engineering.

What you will do

• Design, build and ship backend services for a new event-driven platform
• Build reliable integrations with banking and payment providers - idempotent, traceable and easy to reconcile
• Write clean, well-tested code: unit, integration and contract tests
• Take part in technical design and architecture discussions together with the Tech Lead
• Review code and share knowledge within the team
• Work with AI coding assistants and AI agents in daily development: delegate tasks to agents, review the code they produce and keep it to the team's standards for review and testing
• Follow secure coding practices and security requirements, including PCI DSS
• Support your features in production: monitoring, troubleshooting, fixes
• Communicate directly with the client's engineers and stakeholders

What you bring

• 3+ years of commercial backend development with Java (17+) and Spring Boot
• Production experience with asynchronous, event-driven systems (Kafka, RabbitMQ, AWS SNS/SQS or similar)
• Good knowledge of concurrency and transactions: ACID, isolation levels, locking
• Relational databases (PostgreSQL preferred), JPA / Hibernate, SQL query optimisation
• REST API design and integration with external services: retries, timeouts, idempotency, error handling
• Testing as part of the definition of done: JUnit, Mockito, Testcontainers
• Docker, CI/CD and hands-on AWS (or another major cloud)
• Daily use of AI coding assistants (Claude Code, Cursor, GitHub Copilot or similar): you can show how they speed you up and how you check their output
• English B2+ (Upper-Intermediate or higher): you will communicate directly with the client's team

Nice to have

• FinTech background: banking, payments or lending products
• Card issuing or processing: ISO 8583, authorisation, clearing and settlement, reversals
• Visa or Mastercard integrations
• PCI DSS in practice; secure public APIs (authentication, authorization)
• Ledger systems and double-entry accounting
• DDD, Clean or Hexagonal architecture
• Kotlin, Kubernetes, Terraform

What we offer

• Comfortable workplace and modern office facilities
• Flexible working hours with no overtime and the ability to work remotely
• 50% compensation for certifications, conferences, training
• 50% compensation for English courses
• 18 working days of paid annual leave
• Paid sick leave
• Medical insurance and sports compensation

Company Description

Are you passionate about embedded development and smart connected devices? We are looking for a Middle Embedded Software Developer to join Sigma Software and contribute to the development of innovative IoT-powered smart beverage solutions.
In this remote full-time position, you will work on modern embedded systems that combine real-time firmware, touchscreen interfaces, networking, computer vision, and secure OTA functionality. 
We at Sigma Software create opportunities to work with advanced technologies, distributed engineering teams, and meaningful products used in real-life environments. This role offers the chance to work on cutting-edge IoT solutions while growing your expertise in embedded systems and smart device engineering.
 

CUSTOMER

Our Customer is an international company specializing in IoT-based smart home and lifestyle solutions. The company develops connected products that combine embedded technologies, intelligent automation, safety, and seamless user experience to create modern smart ecosystems for consumers worldwide.

PROJECT

The project focuses on the development of the “Curated House System” — an innovative smart beverage solution that combines embedded systems, intelligent user interaction, and future cloud connectivity. The platform includes touchscreen interfaces, beverage dispensing control, face recognition capabilities, secure OTA firmware updates, and integration with multiple hardware peripherals and sensors.

As part of the project, you will work with both low-level firmware and system-level features to deliver a seamless and intelligent user experience for next-generation smart devices.

Job Description

• Design and implement embedded software components and hardware drivers for displays, cameras, sensors, and actuators
• Develop beverage dispensing logic, including temperature control, pumps, valves, and safety mechanisms
• Implement and maintain secure OTA firmware update functionality over HTTPS
• Develop and optimize embedded graphical user interfaces for LCD touchscreens
• Write clean, maintainable, and efficient C/C++ code
• Debug firmware and perform root-cause analysis on embedded hardware platforms
• Create and maintain technical documentation
• Conduct unit and integration testing on real hardware devices
• Support QA engineers during validation and troubleshooting activities
• Participate in sprint planning, estimation, and Customer communication
• Collaborate with architects, security specialists, and compliance engineers
• Ensure adherence to engineering best practices and quality standards

Qualifications

• At least 4 years of commercial experience in embedded software development using C/C++
• Strong expertise with STM32 and ARM Cortex-M architectures
• Familiarity with embedded platforms from NXP, TI, or Silicon Labs
• Hands-on experience with UART, I2C, SPI, and Wi-Fi communication interfaces
• Solid understanding of networking protocols including MQTT, DNS, DHCP, mDNS, TCP/IP, and UDP
• Experience with FreeRTOS or Zephyr RTOS
• Experience implementing secure boot, OTA updates, checksums, and firmware validation mechanisms
• Experience with bootloader development and firmware update support
• Understanding of cybersecurity principles for IoT and embedded systems
• Strong debugging and troubleshooting skills on real hardware

• Upper-Intermediate or higher English level

   

• WILL BE A PLUS
• Experience with camera integration, image capture, processing, or streaming
• Experience with face recognition technologies or embedded vision SDKs
• Experience with embedded file systems such as FatFS or LittleFS
• Experience with networking stacks such as lwIP
• Background in fluidics control systems, including pumps, flow sensors, or pressure sensors
• Experience working with FPGA or ASIC-based systems

Additional information

PERSONAL PROFILE

• Strong problem-solving and analytical thinking skills
• Ability to work independently and proactively in distributed teams
• Good communication and collaboration skills
• Attention to detail and commitment to engineering quality
• Ability to balance low-level hardware interaction with system-level thinking

Bitmedia Labs is an international product company founded in 2014. Today, we’re a team of 150+ specialists working globally, building products used by millions worldwide.

Our work spans two core areas:

Game Development – browser-first games for global audiences, centered on reward-driven progression and long-term engagement.
Digital Advertising – high-performance advertising and affiliate platforms across Web2 and Web3 markets.

We believe great products are built by people who take ownership – shaping direction, making decisions, and seeing their work turn into real impact. Now, we’re looking for Producer to join the team and help us move our products forward.

Requirements:

• Proven track record of successful products — a strong portfolio of shipped and commercially successful games is a must;
• Strong product vision — ability to define a clear vision for a product and communicate it in a way that aligns the entire team;
• Strategic thinking — ability to determine the direction of a project ;
• Business-to-product thinking — strong ability to translate business objectives into product strategy, features, priorities, and measurable outcomes;
• Product sense — deep understanding of player motivation, engagement loops, retention, monetization, and overall product-market fit;
• Data-driven mindset — working with analytics, funnels, cohorts, experiments, and player behavior data;
• Strong leadership and communication skills — ability to align cross-functional teams and stakeholders around a common vision and direction;
• End-to-end product ownership — experience taking products from strategy and concept through development, launch, iteration, and growth.

Responsibilities:

• Set the product direction and vision — define where the project should go and why, based on business strategy, market opportunities, and player needs;
• Translate business goals into product development — turn company objectives, revenue targets, and strategic priorities into clear product goals, features, and development priorities;
• Own product KPIs — define, track, and drive the key metrics that determine product success, ensuring development decisions are aligned with agreed KPIs;
• Drive product strategy and roadmap — build and continuously adjust the product roadmap based on data, market trends, player behavior, and business priorities;
• Align the team around the vision — communicate the product vision clearly to game design, development, art, marketing, analytics, and other stakeholders;
• Make product decisions — identify what should be built, what should be changed, and what should be stopped, prioritizing work based on expected impact;
• Connect product development with business outcomes — ensure that features and initiatives are not developed in isolation but contribute to measurable business and product results;
• Own execution at the product level — maintain alignment between strategy, roadmap, priorities, and actual development progress;
• Work with data and experimentation — use analytics, player behavior, market research, and experiments to validate hypotheses and make informed decisions.

Hiring process:
       • Intro call with a Recruiter — Test task — Interview with the Hiring team — Сollection of recommendations — Offer.

Why join Bitmedia Labs?
We care about what we build — and about the people who build it. Our teams work closely together, share responsibility for the product, and support each other in everyday challenges.

As part of the team, you’ll have:
      • Professional growth through products operating at global scale;
      • The opportunity to experiment, bring ideas to life, and influence product decisions;
      • Collaboration with strong, experienced teammates who value quality and teamwork.
We also support you with:
      • Flexible schedule and the option to work remotely or from our hubs in Kyiv, Warsaw, and Berlin;
      • Competitive compensation, regular performance reviews, paid vacation, sick leave, and public holidays;
     • Modern Apple equipment and thoughtful corporate gifts for holidays and personal milestones;
     • Support for your growth: courses, workshops, and conferences.

Through our charity foundation Bit Spilka, led by volunteers from our team, we support the military, medics, and civilians across Ukraine — delivering over $500,000 in aid to date. Here your work also drives social impact, and you can also join our volunteer initiatives.

If this resonates with you — send your CV and join us.
Let’s foster the world together!

 

We're looking for a Senior Quant Developer for a specialized fintech company that builds front-office software for commodities trade risk assessment. The company was founded in 2015 by alumni of London investment banks and hedge funds. The product is used by traders every day. You would join a developer-driven team that prefers writing new code to maintaining legacy systems. You'd design, build and test core front-office components, data pipelines and market data ingestion tools. This role suits an academically strong engineer who enjoys hard technical problems, and who likes working at a whiteboard with colleagues in the office.

Details

• Location: Warsaw (Powiśle), hybrid, with most days in the office
• Employment: Full-time
• Level: Mid-Senior

What you'll do

• Design and develop front-office components used by traders daily
• Build and maintain data pipelines and ETL processes
• Own market data ingestion: streaming, time-series and high-frequency trade data
• Test your own work and contribute to the technical decisions of a small, specialized team

Requirements

• 5+ years of software engineering experience
• Expert-level Python
• Proven experience with streaming technologies such as Kafka and Redis
• Degree in Computer Science, Mathematics, Physics or a related field
• Strong knowledge of data structures and algorithms
• Ability to work from the Warsaw office most days (fully remote is not possible)

Tech stack

Python, SQL, NoSQL, Kafka, Redis, ETL, Time Series, AWS / Azure

Nice to have

• A PhD
• Experience in financial markets or commodities trade risk
• Cloud experience (AWS or Azure)
• Olympiad achievements (Informatics or Mathematics)
• A degree from the University of Warsaw (JSIM, CS, Math, Physics) or a background at Staszic / Matex

Interview process

1. Informal introduction: a casual chat with the founders
2. Technical assessment: a practical task to see how you code and solve problems
3. Team meeting: meet the people you'd be working with

A potential invitation to potential minds!

4K-Soft is People. People are most important to us. People are at the heart of every connection we build. Come and join 4K-Soft, where human minds come together to pave the way for the future. We offer a variety of full-time jobs, training programs and internships. Only imagine, how you can help our company and start your career with 4K-Soft!

We are looking for a Middle FullStack Web Developer.

What we expect from you:
English level: B2 or higher
Experience: 3+ years working with Node.js and React

We offer:

Competitive level of remuneration

Convenient work schedule, paid vacation and sick leaves

The opportunity to grow professionally by participating in the implementation of interesting and complex projects, as well as showing personal initiative.

Uklon is a product IT company which develops a leading ride-hailing service. Daily, Uklon expert team pumps up one of the largest infrastructures on the market of Ukraine and abroad ensuring the interaction between drivers and riders. 

We create a high-load product with ambitious technological challenges, latest innovations and non-trivial moves behind. 

Our work framework is to test new hypotheses and push our ideas using the latest tech stack.

Let’s drive the industry together! 

Join us as a Business Project Management Specialist 

Hiring process: Interview with the team, test case and final meeting.

What we offer specifically for this position: 

• continuous professional development in a dynamic team of experts

• opportunity to initiate changes and propose new approaches to optimizing existing work processes

• involvement in real projects where you can clearly see your value and direct impact on the company's development

• deepening of professional skills through practical tasks and participation in corporate training programs

• inspiring corporate culture that values every team member and recognizes the significance of their personal contribution

• annual bonus upon achieving company goals

• working in a company that is part of the international VEON group, represented in telecommunications, fintech, mobile, streaming, healthcare, etc

How you can specifically impact the company’s development:

• task dynamics: high frequency of changes requires rapid adaptation to shifting priorities and emerging project risks
• routine level: low routine  most tasks involve unique problem-solving, with structured reporting and syncs being the only repetitive elements
•  analytical focus: moderate to high involves constant monitoring of KPIs, unit economics, and data-driven decision-making to track project health
•  social interaction: extremely high; intensive communication with internal cross-functional teams (Tech, Ops, Finance) and external partners

Challenges for the first 3 months:

• successfully onboard the team and master the company’s key processes

• set up a regular reporting system to ensure transparency and alignment 

• identify key cross-functional recurring activities lead by Strategy function and develop structured collaboration approach to the execution to ensure efficient and timely delivery

• strong understanding of business processes, operational efficiency drivers, and financial impact metrics 

• practical experience with project management methodologies (Agile, Waterfall, Hybrid) 

• experience handling multiple projects simultaneously 

• outstanding stakeholder management, communication, and negotiation skills 

• high level of self-organization, proactivity, and ownership mindset 

• prior experience in business and strategy-related projects

• upper-intermediate or higher level of English 

• pmp or equivalent certifications are a plus 

 How do you manage your working hours?

• flexible schedule with required collaboration hours from 11:00 to 16:00

• days off with full compensation: 20 for personal needs, 10 for illness, 1 more on a birthday occasion (a gift from the company), up to 8 for blood donation

How will you improve your skills in Uklon?

• internal knowledge sharing, mentorship programs, and training for soft & hard skills

• professional certifications for experts

• corporate library and subscriptions to information resources

• personal/team learning budget

• corporate discounts and compensation for English lessons

• long-term training program for managers

Care and support:

• medical insurance in Ukraine

• paid therapy sessions with Pleso

• providing our soldiers in the Armed Forces with gear and medical supplies

• gamification, gifts, giveaways, and partner discounts

• sports events and corporate team buildings

• wellness programs with emotional well-being workshops

• relaxing massage weeks in the office

• promo codes for Uklon rides

Regular Sport Activities:

• Uklon Football – weekly

• Uklon Online & Offline Yoga – weekly

• corporate discounts and partial compensation for sports activities.

Corporate social responsibility:

Uklon is a socially responsible business and ranks among the Top 10 largest donors supporting the Defense Forces and humanitarian initiatives among Ukrainian businesses in the IT and telecommunications sector.

The total amount of Uklon’s financial support and investments, including the company’s corporate contributions and charitable donations from its founders, in support of the Armed Forces of Ukraine, volunteer movements, CSR projects, and charitable initiatives, amounted to over 230 million UAH for the period from January 2022 to July 2025. The company is also among the most responsible taxpayers in the IT sector, having paid 680 million UAH in taxes based on its 2024 operating results.

If you're looking for a dynamic and ambitious product company focused on growth and global expansion, passionate about cutting-edge technologies, and eager to reveal your inner drive — join Uklon team!

*We value every application and aim to provide feedback within 7 business days. If you haven’t received a response - don’t worry: it simply means there wasn’t a match with the position this time.

If you don’t see an email from us - please check your Spam folder or other inbox tabs. Sometimes our messages end up there.

Thank you for choosing Uklon. See you soon!

INSTYTUTUM is a science-backed skincare brand rapidly scaling on the US market. We are building a high-performance marketing engine focused on exponential D2C growth, creative experimentation, and fast execution. 

Right now, we are looking for a User Acquisition Manager ready to take ownership of scaling paid acquisition far beyond “business as usual”. 

This role is for someone who gets excited not by simply maintaining campaigns — but by building scalable systems, testing bold hypotheses, and uncovering growth opportunities where others stop searching. 

If you are motivated by scaling challenges, large budgets, freedom in decision-making, and direct impact on business results — we’d love to meet you. 

Your Mission 

Your primary goal will be to scale acquisition channels while maintaining performance efficiency and building a repeatable experimentation framework for the US market. 

We expect you to become a key driver of growth for our Meta Ads direction while helping unlock new scaling opportunities across additional paid channels. 

What Challenges You’ll Own 

— Scale Meta Ads spend and performance significantly beyond current volumes; 
— Build a systematic testing framework for creatives, audiences, funnels, and campaign structures; 
— Launch, optimize, and scale acquisition campaigns focused on CAC, CPA, ROAS, and ROMI targets; 
— Expand beyond Meta by validating and growing new traffic channels including TikTok Ads, Google Ads, Snapchat, and others; 
— Collaborate closely with creative and product marketing teams to identify winning angles, messaging, and ad concepts for the US audience; 
— Generate, validate, and scale growth hypotheses using a data-driven approach; 
— Continuously search for new audience segments, placements, and performance opportunities. 

What You’ll Do 

— Manage, optimize, and scale performance campaigns across the Meta Ads ecosystem; 
— Monitor and improve key metrics including Spend, CPM, CTR, CPC, CPA, CAC, ROAS, ROI, LTV, and Retention; 
— Conduct A/B testing across creatives, landing pages, offers, funnels, and campaign structures; 
— Collaborate with designers and content creators to improve creative performance and develop new ad concepts; 
— Analyze campaign performance and transform insights into actionable scaling decisions; 
— Build reporting processes and maintain a strong analytical approach to growth. 

What We’re Looking For 

— 2+ years of experience in User Acquisition, Media Buying, or Performance Marketing; 
— Proven hands-on experience with Meta Ads in D2C products targeting the US market; 
— Experience managing performance budgets starting from $100,000/month; 
— Strong understanding of key performance marketing metrics: CPM, CTR, CPC, CR, CPA, CAC, ROAS, ROI, LTV, Churn, and Retention; 
— Experience with TikTok Ads or Snapchat Ads will be a strong advantage; 
— Strong analytical thinking and confidence in making data-driven decisions; 
— You naturally validate ideas through experiments and measurable results; 
— You enjoy finding unconventional solutions and scaling what works; 
— High level of ownership, proactivity, and ambition to grow together with the company; 
— English level: Intermediate+ (B1/B2). 

Why This Role Is Different 

— Real ownership over growth direction and decision-making; 
— Freedom to launch and test your own ideas quickly; 
— Ambitious scaling goals backed by meaningful budgets; 
— Strong collaboration with product marketing and creative teams; 
— Opportunity to directly influence the growth of a fast-scaling D2C brand on the US market. 

User Acquisition Manager (Meta Ads, Google Ads, TikTok | Global Markets) | INSTYTUTUM 

About INSTYTUTUM 

INSTYTUTUM is a Swiss longevity skincare brand rapidly scaling across global markets. 

We are looking for an ambitious User Acquisition Manager to drive international D2C growth, scale paid acquisition, and unlock new opportunities through creative experimentation and data-driven marketing. 

If you thrive on ambitious growth targets, large budgets, and real ownership of results — we'd love to meet you. 

Your Mission 

Scale global customer acquisition and D2C revenue while maintaining performance efficiency. 

Take ownership of paid acquisition growth across international markets, build a systematic experimentation framework, and unlock new opportunities for scalable growth. 

What You’ll Do 

• Manage, optimize, and aggressively scale Meta Ads, Google Ads, and TikTok Ads campaigns across international markets; 
• Develop and execute acquisition strategies focused on CAC, ROAS, ROMI, and revenue growth; 
• Test and optimize creatives, audiences, offers, landing pages, and conversion funnels; 
• Identify, validate, and scale winning growth hypotheses across markets; 
• Explore and launch additional acquisition channels, including Snapchat Ads and emerging platforms; 
• Collaborate with creative and marketing teams to develop high-performing ad concepts; 
• Analyze campaign performance, optimize budget allocation, and continuously improve acquisition efficiency. 

What We’re Looking For 

• 3+ years of experience in User Acquisition, Media Buying, or Performance Marketing; 
• Proven track record of scaling paid acquisition for international D2C brands; 
• Strong hands-on expertise in Meta Ads and Google Ads; experience with TikTok Ads is a strong advantage; 
• Experience managing advertising budgets of $100,000+/month; 
• Strong understanding of CAC, CPA, ROAS, ROMI, LTV, CTR, and conversion metrics; 
• Hands-on experience in creative testing, campaign optimization, and performance scaling; 
• Analytical mindset, proactive approach, and strong ownership of business results; 
• English: Intermediate+ (B1/B2). 

Why This Role Is Different 

— Real ownership over growth direction and decision-making; 
— Freedom to launch and test your own ideas quickly; 
— Ambitious scaling goals backed by meaningful budgets; 
— Strong collaboration with product marketing and creative teams; 
— Opportunity to directly influence the growth of a fast-scaling D2C brand on the new markets. 

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv - you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

PwC is looking for a skilled Full-Stack Developer proficient in Python and JavaScript to build and maintain web-based solutions. You’ll work across the stack to support digital initiatives, from UI development to backend services and database design.

Key Responsibilities:

• Develop responsive, accessible UIs using HTML5, CSS3, and React or Angular;
• Build and maintain APIs and backend services with FastAPI, Django, or Flask;
• Design and manage databases (PostgreSQL, MongoDB);
• Ensure performance, security, and scalability across the stack;
• Collaborate with cross-functional teams to deliver high-quality solutions;
• Participate in code reviews and CI/CD workflows;
• Stay current with modern frameworks and best practices.

Required Skills:

• Strong experience with Python and JavaScript frameworks;
• Solid front-end skills (HTML5, CSS3, modern JS);
• Proficiency in RESTful API design and database management;
• Familiarity with Git, CI/CD, and secure coding practices;
• Strong problem-solving and communication skills.

Preferred:

• Experience in agile environments;
• Knowledge of Azure or AWS;
• Familiarity with Docker, Kubernetes, or GitOps;
• Exposure to AI or data-driven systems.

Policy statements:
https://www.pwc.com/ua/uk/about/privacy.html

N-iX Games is looking for a talented Technical/VFX Artist to design, create and implement special effects for our self-developed console game made with Unreal Engine. You will be responsible for creating effects, setting up levels and lighting, and finalizing the visual style of in-game special effects and overall level look to deliver the best results. The ideal candidate should demonstrate expert creativity and strong technical and artistic skills.

Founded in 2012, N-iX Games is one of the biggest game development and art production vendors in Ukraine, working with leading publishers and media enterprises around the globe. The team of 240+ professionals focuses on full-cycle game development, VR solutions, and content creation for all the most popular platforms. The studio has successfully collaborated with over 100 clients, including Paradox Interactive, Supermassive Games, Netflix, Tempo Storm, Wargaming, Activision-Blizzard and many others.

We strive that the work we deliver has a certain level of excellence and are looking for like-minded, exceptional talents. If you are excited about the opportunity to collaborate on awesome games, both indie and AAA, and work with a cutting-edge tech stack alongside other passionate experts, we invite you to join our team.

Responsibilities:

• Develop and maintain art pipelines in Unreal Engine 5, from asset import to in-game integration
• Create and optimise materials, shaders, and Material Functions, balancing visual quality and performance
• Drive the creation of special effects (VFX) using Niagara and the particle system, to achieve the best possible look for our game 
• Profile and optimise the game’s rendering performance (CPU, GPU, memory), working with tools such as Unreal Insights and the GPU Visualizer
• Finalize the visuals on each of the 40+ in-game levels by addressing such aspects as lighting, special effects, post effects, etc.
• Drive the creation of special effects to achieve the best possible look for our game
• Evaluate new Unreal Engine features and propose improvements to the team’s workflows

Requirements:

• At least 2 years of experience as a Technical/VFX artist 
• A strong portfolio of work which demonstrates the ability to create high quality artwork suitable for games
• Solid knowledge of Unreal Engine, as well as knowledge of the particle system and the creation of particles
• In-depth knowledge of setting up lighting & scene optimization
• Good experience with creating and utilizing custom shaders

Nice to have:

• Intermediate knowledge of English (or higher)
• At least one shipped commercial PC or console title
• Experience with procedural content generation (Houdini, PCG framework)
• Knowledge of version control systems (Perforce, Git) and build pipelines
• Familiarity with sci-fi, strategy, or simulation game visuals

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

N-iX Games is looking for a talented Technical/VFX Artist to design, create and implement special effects for our self-developed console game made with Unreal Engine. You will be responsible for creating effects, setting up levels and lighting, and finalizing the visual style of in-game special effects and overall level look to deliver the best results. The ideal candidate should demonstrate expert creativity and strong technical and artistic skills.

Founded in 2012, N-iX Games is one of the biggest game development and art production vendors in Ukraine, working with leading publishers and media enterprises around the globe. The team of 240+ professionals focuses on full-cycle game development, VR solutions, and content creation for all the most popular platforms. The studio has successfully collaborated with over 100 clients, including Paradox Interactive, Supermassive Games, Netflix, Tempo Storm, Wargaming, Activision-Blizzard and many others.

We strive that the work we deliver has a certain level of excellence and are looking for like-minded, exceptional talents. If you are excited about the opportunity to collaborate on awesome games, both indie and AAA, and work with a cutting-edge tech stack alongside other passionate experts, we invite you to join our team.

Responsibilities:

• Develop and maintain art pipelines in Unreal Engine 5, from asset import to in-game integration
• Create and optimise materials, shaders, and Material Functions, balancing visual quality and performance
• Drive the creation of special effects (VFX) using Niagara and the particle system, to achieve the best possible look for our game 
• Profile and optimise the game’s rendering performance (CPU, GPU, memory), working with tools such as Unreal Insights and the GPU Visualizer
• Finalize the visuals on each of the 40+ in-game levels by addressing such aspects as lighting, special effects, post effects, etc.
• Drive the creation of special effects to achieve the best possible look for our game
• Evaluate new Unreal Engine features and propose improvements to the team’s workflows

Requirements:

• At least 2 years of experience as a Technical/VFX artist 
• A strong portfolio of work which demonstrates the ability to create high quality artwork suitable for games
• Solid knowledge of Unreal Engine, as well as knowledge of the particle system and the creation of particles
• In-depth knowledge of setting up lighting & scene optimization
• Good experience with creating and utilizing custom shaders

Nice to have:

• Intermediate knowledge of English (or higher)
• At least one shipped commercial PC or console title
• Experience with procedural content generation (Houdini, PCG framework)
• Knowledge of version control systems (Perforce, Git) and build pipelines
• Familiarity with sci-fi, strategy, or simulation game visuals

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers