Jobs at Djinni

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 Social Media Content Specialist to join our team!

Requirements:

- 1+ year of experience in SMM;

- 2+ years in content creation: copywriting, news, memes, announcements, trends;

- Deep understanding of sport/football: teams, players, tournaments, context;

- Solid understanding of visual aesthetics (composition, typography, color);

- Good self-management skills: prioritization, focus, and discipline.

Responsibilities:

- Develop and execute a social media content plan aligned with the global SMM strategy and marketing goals;

- Close working with local market features: localization of the content, filling the calendar of local events, celebrations, stop-topics etc;

Create content ideas, titles, captions (posts, memes, stories, reels) following our tone of voice;

Prepare briefs and tasks for designers in Jira, ensuring visual and message alignment;

Collaborate with the team on cross-geo campaigns and ensure localization for the market;

Monitor trends, memes, football news & cultural events that matter for the audience;

Conduct content analytics: track content performance, audience reactions, and engagement insights, ba able to suggest hypotheses for improvement;

Ensure quality and timing: relevant, engaging, visually strong, and on-brand.

What are the conditions and bonuses?

☘️An exciting and challenging job in a fast-growing product company, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and other;
🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed;
📍Beautiful offices in Warsaw, Limassol, Kyiv, Almaty, Yerevan work remotely or on-site with comfort and enjoy the opportunity to build a network of connections with professionals day by day;
🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided;
🏖Paid vacations, sick leave, personal events days, days off;
👨🏻‍⚕️Corporate health insurance program for your well-being;
💵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;
🗣Free internal English courses;
🧘Yoga classes to help you stay active and energized;
✈️In-house Travel Service;
🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, PIN-UP clubs for movie / book / pets lovers, special office days dedicated to holidays;
🎳Company events, team buildings.

About the Role

We're building AI-powered products and we need someone who can work across the full stack without needing a handoff at every layer. This role spans backend services, AI orchestration, real-time voice systems and frontend interfaces. You'll own features from design to deployment and be expected to debug issues that cut across all of them.

If your experience is limited to a single layer of the stack, or your AI exposure hasn't gone beyond side projects, this role isn't the right fit.

What You'll Do

• Design and build backend services and APIs using Node.js and Python
• Build and operate AI workflows using LangChain and LangGraph for orchestration, chaining and agent logic
• Use LangSmith for tracing, evaluation and debugging of AI pipelines in production
• Integrate real-time voice capabilities using LiveKit and related voice AI infrastructure
• Build frontend interfaces using React and Next.js that are fast, reliable and handle streaming AI responses cleanly
• Own features end to end from initial design through deployment, monitoring and iteration
• Handle async workflows, background jobs and real-world failure scenarios
• Set up logging, tracing and alerting so production issues surface before users report them
• Debug problems that span frontend, backend, AI pipelines and infrastructure simultaneously
• Work with product to turn vague requirements into well-scoped, shipped features
• Review code and maintain technical standards across the team

What You'll Need

• 5+ years of professional software engineering experience in production environments
• Strong hands-on experience with Node.js and Python at production scale
• Demonstrated experience building AI workflows using LangChain, LangGraph or comparable frameworks
• Working knowledge of LangSmith or equivalent tooling for AI observability and evaluation
• Experience building and operating backend APIs used by real users
• Solid experience with React and Next.js or equivalent frontend frameworks
• Strong understanding of async programming, streaming (SSE/WebSocket) and frontend state management
• Experience with MongoDB or similar document stores including data modelling trade-offs
• Comfort deploying and operating services on AWS, GCP or equivalent cloud environments
• Ability to debug across frontend, backend and AI layers using logs, traces and metrics

Good to Have

• Hands-on experience with LiveKit or other real-time voice and audio pipeline systems
• Prior work on conversational AI, voice agents or multi-modal AI products
• Experience with RAG pipelines, LLM evaluation or fine-tuning workflows
• Background in a fast-moving startup or high-velocity product environment

What We Expect

• You take ownership of what you build and don't wait for someone else to fix broken things
• You understand trade-offs and can communicate them clearly to non-engineers
• You think in systems, account for failure modes early and design for graceful degradation
• You leave code and documentation in better shape than you found it

What You'll Get

• End-to-end ownership of features that ship to real users
• Direct influence over technical and architectural decisions
• Work on systems that are used daily by real users
• A small team where your contributions have visible product impact

We are seeking a highly skilled and motivated Android BSP Engineer with deep expertise in Android platform development, BSP customization, and system integration. The ideal candidate will bring extensive experience in embedded software/firmware development, Android HAL, and Android BSP, with strong knowledge of Android camera, display, and media subsystems.

This role offers the opportunity to work with the latest Android versions (preferably Android 14 and beyond), contributing to the development and optimization of Android-based embedded platforms. You will work at the intersection of hardware and software, helping to integrate, customize, and enhance core Android platform components while solving complex system-level challenges.

You’ll be part of a cross-functional team developing and optimizing Android-based platforms, collaborating closely with hardware and software engineers to deliver robust, scalable, and high-performance solutions.

Technical Requirements:

• 8+ years of professional experience in embedded software/firmware development.
• 2+ years of hands-on experience with Android BSP development, platform customization, and system integration.
• Hands-on experience with Android AOSP development.
• Strong understanding of recent Android versions, features, APIs, and changes (preferably Android 14 or later).
• Experience working with Android HAL and Android subsystems, particularly Camera, Display, and Media.
• Strong understanding of Android platform architecture and interactions between BSP, HAL, Android subsystems, and hardware components.
• Strong proficiency in C/C++ development.
• Solid experience in Embedded Linux development, including power management, display drivers, and connectivity stacks such as Wi-Fi and Bluetooth.
• Familiarity with Android development tools and workflows, including ADB, Fastboot, Repo, Git, Gerrit, and GitHub.

Responsibilities:

• Work with Android source code and build system: synchronize repositories, manage branches and patches, integrate third-party components, and resolve build issues and conflicts.
• Develop, customize, and maintain Android BSP components, platform integrations, and system-level features for Android-based embedded devices.
• Modify and improve Android platform components according to project requirements, including customization for specific hardware and product needs.
• Develop, integrate, and maintain Android HAL components and support Android subsystems, particularly camera, display, and media.
• Collaborate with hardware teams to support platform bring-up, hardware integration, validation, and troubleshooting activities.
• Customize and maintain Linux kernel and embedded platform components: configure Device Tree, integrate and modify drivers, and support hardware-specific functionality.
• Debug and diagnose software and hardware issues across Android BSP, HAL, camera, display, media, and Embedded Linux layers using logcat, dmesg, ADB, and other debugging tools.
• Analyze root causes, document solutions, and contribute to system stability, performance optimization, and overall platform reliability.

Important: if you believe your experience matches this position, please make sure that all relevant technologies, tools, and skills required for the role are clearly reflected in your CV. We can only evaluate qualifications that are explicitly listed in the resume.

Media Buyer (Facebook | Nutra)

About Us

We are a performance marketing team focused on affiliate marketing and traffic acquisition. We are currently scaling our Nutra direction and looking for a Media Buyer who is experienced with Facebook Ads, data-driven decision-making, and campaign optimization.

Responsibilities

• Launch, manage, and optimize Facebook advertising campaigns.
• Work with Nutra offers and funnels.
• Prepare, test, and analyze creatives.
• Validate and optimize ad funnels before scaling.
• Warm up and prepare advertising accounts for launch.
• Coordinate tasks with creative, farming, and technical teams.
• Monitor campaign profitability and performance.
• Analyze key metrics such as ROI, CPL, CR, EPC, and others.
• Maintain internal reporting on creatives, campaigns, and landing pages.
• Use spy tools and research new market opportunities and approaches.

Requirements

• 3–6+ months of experience in affiliate marketing/media buying.
• Hands-on experience with Facebook Ads as the primary traffic source.
• Experience in Nutra
• Ability to provide cases, statistics, or examples of successful campaigns.
• Strong understanding of unit economics and performance metrics.
• Experience with tracking platforms (Keitaro or similar).
• Ability to independently analyze and optimize funnels.
• Understanding of creative production processes and briefing creatives.
• Basic skills in photo/video editing tools will be a plus.
• Strong analytical mindset, attention to detail, and result-oriented approach.

What We Offer

• Performance-based compensation with attractive earning potential.
• We are open to discussing candidates' compensation expectations individually.
• Access to exclusive offers from top affiliate networks.
• Resources for testing and scaling campaigns.
• Support from an experienced Team Lead and team.
• Fully remote work format.
• Opportunities for professional and financial growth.

ZBL is an international EdTech product company that builds, launches, and scales proprietary education brands in the Health & Fitness niche, powered by global influencers and performance marketing. We operate as a full-cycle model: from idea and product development to marketing, analytics, and operations — fully in-house.

Key Responsibilities:

• Plan, launch, and manage Meta (Facebook & Instagram) ad campaigns for multiple products and audiences.
• Conduct audience research, targeting, and segmentation to maximize ad performance.
• Monitor, analyze, and optimize campaigns to achieve KPIs (ROAS, CTR, CPA, etc.).
• Create, test, and iterate ad creatives, copy, and formats for maximum engagement.
• Manage ad budgets and bidding strategies to ensure cost-efficient campaigns.
• Prepare regular performance reports with actionable insights for the marketing team.
• Stay updated with Meta Ads Manager features, trends, and best practices.
• Collaborate with designers, copywriters, and marketing teams to ensure campaigns align with brand goals.

Requirements:

• Proven experience managing Meta Ads campaigns with measurable results.
• Strong analytical skills and experience using data to optimize campaigns.
• Knowledge of audience research, targeting, and ad segmentation.
• Experience with ad creative testing, copywriting, and A/B testing.
• Familiarity with ad budget management and bidding strategies.
• Excellent communication and collaboration skills.
• Ability to work independently and meet deadlines in a fast-paced environment.

Benefits:

• Health First: Free access to all our fitness products to stay in peak shape.
• Performance Rewards: Transparent bonus system, corporate English lessons, and rewards for outstanding achievements.
• Remote Culture: 100% remote work within a team of growth-oriented professionals.

About AIstats

AIstats is transforming the football data market by moving from 2D to 3D, powered by a cutting-edge Computer Vision and Machine Learning ecosystem that unlocks deep insights for both fans and professionals.

What we build

Advanced Football Analytics — a mobile app for football fans an— a mobile app for football fans and bettors that reached 100k MAU in less than a year, featuring advanced statistics powered by our proprietary ML and Computer Vision technologies.

Advanced Analytics for Football Clubs — a next-generation analytics platform helping football clubs, scouts, and agents make smarter decisions both on the pitch and in the transfer market. Thanks to our early leadership in skeletal tracking data, AIstats secured several Tier-1 club partnerships within months of launching the platform.

Responsibilities

• Develop and improve statistical and machine learning models
• Analyze large-scale datasets using Python and SQL
• Conduct statistical analysis, hypothesis testing, and experiment evaluation
• Build interpretable ML solutions and explain model behavior
• Collaborate with cross-functional teams on data-driven initiatives

Requirements

• 3+ years of experience as a Data Scientist
• Strong Python skills with NumPy, Pandas, and scikit-learn
• Solid SQL knowledge; R is a plus
• Strong understanding of probability theory and mathematical statistics
• Experience with statistical testing: t-test, χ², ANOVA, Mann-Whitney, Wilcoxon, KS test, bootstrap/permutation tests, Bonferroni and FDR corrections
• Hands-on experience with XGBoost, LightGBM, and CatBoost
• Understanding of Bayesian methods
• Experience with longitudinal/panel data, mixed/fixed/random effects models, and repeated measures
• Experience with interpretable ML approaches: GAM, SHAP, partial dependence, counterfactual analysis

Nice to Have

• Experience with deep learning: Transformers, attention mechanisms, RNN/LSTM
• Knowledge of Graph Neural Networks
• Experience with Reinforcement Learning: PPO, MAPPO, MAT, multi-agent RL
• Familiarity with Google Research Football or similar environments
• Advanced Bayesian statistics: PyMC, Stan, numpyro, MCMC, hierarchical models
• Experience with causal inference: DAGs, instrumental variables, difference-in-differences
• Knowledge of probabilistic spatial models: Markov chains, HMM/DBN, MRF/CRF, Gaussian processes

What we offer

• Fully remote work format;
• Flexible start of the working day and convenient schedule;
• Stable competitive salary pegged to the USD;
• 24 days of paid vacation and 15 additional paid days off (including sick leave, corporate holidays, and national/religious holidays);
• Friendly communication culture, great product, and transparent processes;
• Dynamic work environment with a passionate team that loves sports and technology;
• Opportunities for professional growth and career development;
• No micromanagement — just trust, autonomy, and freedom to experiment.

Join our team and help drive innovation in the football industry!

A unique opportunity to take part in building an R&D team for a global company.

We are seeking highly experienced and visionary formal verification engineers to contribute to the development of advanced AI connectivity architectures and help define the formal verification methodology from the ground up.

Responsibilities:

• Define and execute formal verification strategies and methodologies for complex SoCs, IPs, and networking architectures (Switches, NICs, SmartNICs).
• Develop, implement, and maintain formal verification environments and test plans from concept to production.
• Specify formal properties, assertions, and constraints using formal tools and SystemVerilog Assertions (SVA).
• Own the formal verification environment, including setup, maintenance, and integration with simulation-based flows.
• Collaborate closely with architecture, RTL, and design teams to identify corner cases, ensure functional correctness, and drive verification sign-off.

Qualifications:

• B.Sc. in Computer Science or Computer Engineering.
• 3+ years of industry experience in formal verification.
• Proven experience with JasperGold, VC Formal, or similar formal verification tools.
• Demonstrated ownership and maintenance of formal verification environments.
• Strong analytical and problem-solving skills.
• Team player with excellent interpersonal and communication abilities.
• English - Upper-Intermediate.

Advantages:

• Experience as a verification engineer with practical knowledge of SystemVerilog and UVM methodology.
• Familiarity with networking architectures and IPs (Switches, NICs, SmartNICs).
• Experience integrating formal verification within broader project verification flows.

We offer:

• 5-day working week, 8-hour working day, flexible schedule.
• No time tracker.
• Competitive salary.
• Work-life balance.
• Remote work.
• Standard social guarantees: annual leave, sick days.
• We understand the value of knowledge and training, so if you will find interesting and useful courses for yourself, we will pay for them.
• We value life and work time therefore all issues are resolved on the spot without unnecessary bureaucracy.

DevCom is looking for a Trainee QA!
If you have a solid theoretical foundation in manual and mobile testing and a strong desire to learn, we invite you to join our Student Program, where you can gain hands-on experience, improve your skills, and grow in a professional environment.

The benefits of our student program:

— Personal mentor for each student
— 100% employment in case of successful completion of the student program
— Student program for three months. In this period, the stipend will be paid ($300 gross per month)

Work mode: This is a full-time position located in our Lviv office (hybrid is also available). While we prioritize candidates who are based in Lviv and able to attend the office, we are also happy to consider applicants from other regions of Ukraine.
 

Required Skills:

• Completed thorough testing courses are a mandatory requirement
• English — Intermediate plus  and higher (written and spoken)
• Basic understanding of software testing theory
• Understanding of mobile application testing
• Basic understanding of the software development process
• Familiar with the design and development of test documentation (test case, bug report, checklist)
• Familiar with SDLC/STLC
• Basic knowledge of HTML
• Good knowledge of Database (be able to write database queries to verify data as part of testing)
• Basic understanding of Agile/Scrum
• Ability to analyze and structure information
• Excellent attention to detail
• The ability to work autonomously as well as part of a team
• A logical, curious, and analytical mindset with a desire to interrogate data
• Excellent presentation and communication skills

Nice to have:

• Final year student or young specialist in the STEM field (Science, Technology, Engineering and Mathematics)
• Familiar with API testing (Postman/Swagger)
• Being familiar with Jira will be a plus
• Basic understanding of the client-server application architecture
• Basic understanding of LLMs (ChatGPT etc.) and prompt engineering
• Pet projects or practical testing experience

What do we offer after successful completion of the student program:
Salary $500 gross per month
Performance review every six months
Opportunities for career and professional development
English classes and other L&D activities like courses and certifications reimbursement
Recognition gifts and awards
Benefit program with the opportunity for compensation to cover the following expenses of their choice:

• Sports activities (these can be one-time sessions or monthly or annual subscriptions)
• Payment of medical expenses (treatment and preventive procedures at the dentist, services, and consultations with doctors, medical examinations, and tests)
• Psychologist consultations
• Medical insurance
• Training for the development of professional skills (hard and soft skills), including the purchase of necessary educational literature
• Courses in traditional arts and creativity (such as drawing, music, photography).
• Individual English language improvement classes- Employee referral program

21 working days — paid vacations
10 paid sick leaves
IT club membership

The next step is to perform the test.

After that will be a short interview conducted by recruiter — 15 minutes

Then — technical interview.

In case of success — offer!

Transparency and communication are highly valued by us. Our recruitment process includes feedback at every stage, ensuring that you are consistently informed and engaged.

Join our dynamic team at CoreWillSoft GmbH as an Automation QA Engineer! We build innovative security software for critical facilities and infrastructure, combining building automation, IoT, and physical access control to protect what matters most. 

We are looking for an experienced Automation QA Engineer to join our team and help us strengthen and modernize our QA processes. Our products are used by multiple businesses across Europe, the USA, and Canada, so quality, reliability, and long-term maintainability are essential to everything we build. 

Our Agile team operates from multiple locations, with headquarters in Bonn, Germany, and is responsible for the complete software development lifecycle, including initiation, implementation, and operation of physical access control software operating multiple electronic locks over different radio protocols and RFID identification media. 

This is an exciting opportunity to work on cutting-edge projects involving high-security hardware and technology in a creative, international environment. You will have the chance to build automation processes from scratch, collaborate with a tech-savvy team, and make a real impact on our product quality and customer experience. 

What you'll do: 

• Design, implement, and maintain automated tests for web, API, and system-level functionality. 
• Establish the foundation for test automation processes, tools, frameworks, and best practices within the QA team. 
• Analyze existing manual testing processes and identify areas suitable for automation. 
• Collaborate closely with Manual QA Engineers, Product Managers, and the development team to improve overall product quality. 
• Prepare and maintain QA-related documentation aligned with product and company needs. 
• Perform testing on physical security systems and extensions, ensuring their functionality, reliability, and stability. 
• Build and improve test coverage for regression, integration, API, and functional testing. 
• Support the integration of automated tests into CI/CD pipelines where applicable. 
• Continuously improve QA methodologies, testing processes, and quality standards across the team. 
• Share automation knowledge with the QA team and support the team's professional development. 
• Stay up to date with industry trends, tools, and best practices in QA automation and software testing. 

What we offer: 

• Meaningful Impact: Build solutions that are used every day by thousands of businesses - your work will directly improve real-world security and connected device experiences. 
• Product & Process Ownership: Help shape not only the product, but also how we build, test, and deliver it. Your ideas and decisions will have visible impact. 
• Opportunity to Build from Scratch: Take ownership of automation processes and help establish the foundation for scalable QA automation in the company. 
• Industry Influence: Contribute to key security standards and best practices, staying ahead of the curve in a fast-evolving industry. 
• Modern Tech Stack & Hardware: Work with the latest hardware and the tools you need to do your best work. 
• Time Off & Flexibility: Vacation days, paid sick leave, and public holidays in line with German legislation, plus flexibility built around outcomes rather than micromanagement. 
• Learning & Development Budget: We support continuous growth by covering hard and soft skills courses, trainings, and access to e-learning platforms. 
• Coworking Support: Prefer not to work from home every day? We offer coworking compensation so you can choose the environment that fits you best. 
• Language Learning Support: Monthly fixed compensation you can use to improve your English or German through the learning format of your choice. 
• Strong Team Culture: Open collaboration, a flat structure, and thoughtful onboarding - your voice is heard, and you can make an impact from day one. 

What you'll bring: 

• Proven experience in QA automation testing for web, mobile, desktop, API, or complex software products. 
• Experience building / improving automation frameworks, ideally from an early-stage. 
• Strong understanding of QA methodologies, tools, and processes. 
• Good knowledge of the Software Development Lifecycle. 
• Experience with test planning, test execution, reporting, and test documentation. 
• Hands-on experience with API testing and related tools. 
• Experience with at least one automation framework or tool, such as Playwright, Cypress, Selenium, Appium, REST Assured, Postman/Newman, Pytest, or similar. 
• Programming or scripting experience in one or more languages, such as JavaScript/TypeScript, Python, Java, or similar. 
• Understanding of CI/CD principles and experience working with tools such as GitHub Actions, GitLab CI, Jenkins, or similar would be a strong advantage. 
• Good tooling knowledge, for example Git, UNIX command-line tools, curl, browser developer tools, Charles Proxy, Wireshark, or similar. 
• Basic knowledge of computer science, system topology, networking infrastructure and protocols, and database management systems. 
• Strong analytical and problem-solving skills, with a focus on continuous process improvement at both product and company level. 
• Strong communication and collaboration skills. 
• Advanced English language skills. 
• Interest in using AI tools to improve testing activities, documentation, and QA efficiency. 

Nice to have: 

• Experience with IoT products, building automation, physical access control, or hardware-related testing. 
• Experience with security-related products or understanding of general security concepts. 
• Experience with AWS EC2 or other cloud infrastructure. 
• Degree in Computer Science, Engineering, or a related field. 
• German language skills. 

Applause is a profitable, well-capitalized operator of consumer subscription apps across privacy, security, health, productivity, and accessibility. The model is simple: acquire high-retention, category-leading apps and scale them. 

The apps already have top 1% retention, strong brands, and high organic traffic, so paid growth compounds on proven products instead of propping up weak ones. There is real budget behind growth that works.

The role. A top-of-funnel paid acquisition role that owns user acquisition across the whole portfolio end-to-end — running it, not supervising it. You start by personally running growth for at least three apps, then scale to five to seven as you build repeatable systems and, over time, a team beneath you. Paid and organic are treated as one connected acquisition system. This is a builder-operator role: you set up the growth function from scratch — campaign infrastructure, measurement, reporting, and playbooks.

Who we look for

• Has personally deployed meaningful paid spend at a consumer subscription company (~$10M+/year, or smaller budgets run with real rigor) with direct ownership of the numbers.
• Hands-on with the modern stack: an MMP (AppsFlyer, Adjust, or Singular), Superwall, Amplitude/Mixpanel, Customer.io 
• SKAN-fluent; builds and pressure-tests LTV and payback models 
• Has operated across 3–7 apps or product lines at once 
• Player-coach who executes today with a clear path to hire and lead a small team; ideally arrives with 2–3 trusted specialists (e.g. a UGC/creative producer and an analyst).

What you'd own

• Plan, launch, and optimize paid UA hands-on across Apple Search Ads, Google (UAC + search), Meta, TikTok, and paid web — budgets, bids, audiences, and creative testing against payback and CAC per app.
• Drive organic in parallel: ASO, store-listing conversion, web-to-app.
• Build the measurement backbone — stand up the MMP, configure SKAN and postbacks, run incrementality tests, reconcile web-vs-app attribution.
• Own the experiment roadmap independently: bring your own channel and creative ideas, size them by expected payback, run them without waiting for a task list.
• Manage secondary paywall/funnel work and coordinate lifecycle (email/push) with the analytics and lifecycle hires.

Comp. up to $150K (+performance bonuses) tied to portfolio payback and growth, with equity options after the first year

Project Overview:

We are seeking a Senior Backend Engineer with strong expertise in Node.js, TypeScript, and AWS Lambda to build a decoupled serverless application. The role focuses on implementing plan management endpoints with Fastify and ts-rest, designing a SQL Server schema with Prisma migrations, and building a deterministic calculation engine covering forecasts, SMV, derived metrics, and goal deltas — while integrating internal APIs with caching, retries, and circuit-breaker patterns, wiring the full AWS infrastructure via Serverless Framework, and ensuring quality through thorough unit and integration tests.

Customer Overview:

USA influencer marketing platform for organizations looking to advance their creator marketing. Its enterprise-grade technology and industry-leading intelligence facilitate scaled creator discovery, streamlined workflows, and robust reporting, while ensuring compliance and brand safety.

Responsibilities:

• Implement plan and plan-item endpoints with Fastify + ts-rest, validated by Zod schemas shared with the frontend.
• Build the deterministic calculation engine (forecast → adjustment → SMV → derived metrics → totals → goal deltas), including BRD edge cases (Twitch avg_concurrent_views, payout exclusivity, missing-data defaults).
• Design the SQL Server schema and Prisma migrations; ensure reviewable raw-SQL output for the DBA team.
• Build adapters for Lists/Collections and Campaign Service with caching, fallbacks, circuit-breaker, and structured error handling.
• Integrate AWS infrastructure (API Gateway, Lambda, RDS, ElastiCache, Secrets Manager, S3) via Serverless Framework; wire Coralogix logs/metrics/traces.
• Write thorough unit and integration tests, especially around the calc engine; pass Trivy + SonarQube gates in CI.
   

Skills/Requirements:

• 4+ years with Node.js and TypeScript in production backend services.
• Hands-on AWS Lambda + API Gateway, comfortable with serverless tradeoffs (cold starts, 30s/10MB limits, concurrency).
• Experience with Prisma (or comparable ORM) and a relational database; SQL Server experience a plus.
• Strong API design background — REST + JSON Schema/Zod/OpenAPI — and integration patterns (caching, retries, circuit breakers).
• Comfortable with Serverless Framework / IaC and GitLab-style CI/CD.

Nice to have:

• Fastify and ts-rest experience specifically.
• Background in calculation/forecasting engines or financial/analytics computations.
• Familiarity with Coralogix or comparable APM/log platforms.

Position overview
As a Senior .NET Engineer on the Fintech Core project, you will drive the development of key product modules within a modular white-label fintech platform designed for rapid deployment of digital banking and payment solutions. You will take ownership of technical implementation, architectural decisions, integration approaches, and engineering quality within one of the platform’s major client deployments.
 

The role requires deep expertise in backend engineering, distributed systems, and fintech integrations, with strong focus on scalability, reliability, security, and maintainability. You will work closely with Architects, Product Owners, DevOps Engineers, and cross-functional development teams to design and implement high-performance microservice-based solutions that support complex financial operations.
 

This position is ideal for a proactive and technically strong engineer with hands-on experience in fintech or banking systems, who is capable of leading module-level development initiatives, mentoring engineers, and driving engineering excellence across the project.

Your Background

-5+ years of experience with .NET backend development
-Experience with fintech, banking, or payment systems
-Strong understanding of microservices architecture
-Experience with ASP.NET Core, REST APIs, and gRPC
-Hands-on experience with Docker and Kubernetes
-Experience with PostgreSQL, Redis, MongoDB, RabbitMQ, Kafka
-Strong knowledge of software architecture and clean coding principles
-Experience with AWS is a plus
-English level (Upper-Intermediate.)

Responsibilities

-Develop and maintain scalable backend services using .NET and ASP.NET Core
-Design and support microservice-based solutions
-Develop REST APIs and gRPC integrations
-Collaborate with DevOps and cross-functional teams
-Ensure system reliability, scalability, and code quality
-Participate in architecture and technical decision-making

Technologies

.NET 10, ASP.NET Core, gRPC, Entity Framework Core, PostgreSQL, RabbitMQ, Docker, Kubernetes, OpenTelemetry, Prometheus, Serilog, AWS, GitHub Actions

WE OFFER 
-20 billable days off in the first year of cooperation, all next years — 25 billable days off 
-Fair and competitive compensation 
-Friendly team and enjoyable working environment 
-Clearly described business processes in the company that really work -Regular updates on company news and Q&A sessions with top management 
-Flexible work schedule 
-Remote work mode 
-Ability to transfer unused vacation days to the next year

We are looking for a forward-thinking, driven, and hands-on Global Chief Information Security Officer (CISO) to design, implement, and scale our global information security strategy. As we expand, you will be responsible for building security processes from scratch, ensuring unimpeachable information security compliance across the regulated markets, and leading a distributed remote team.

This is a leadership role that is focused entirely on the global information security posture of the company.

Key Responsibilities:

InfoSecurity Strategy & Governance:

• Define, drive, and execute the global information security roadmap aligned with business goals.
• Assess and define CEX.IO’s current and future requirements in terms of information security.
• Identify capability gaps in the context of regulatory considerations and industry benchmarks
   

Process Management:

• Build, implement, and optimize robust security processes, frameworks, and policies across the entire organization from the ground up.
• Ensure all target teams are provided with the training and resources needed to perform their jobs to the highest degree possible

Compliance, Certifications & Audits:

• Oversee the successful acquisition and maintenance of industry-specific licenses and certifications (e.g., SOC 2, PCI-DSS, DORA, MiCA/crypto regulations). Manage regular internal/external security audits and executive reporting. 
  To achieve this, you will closely collaborate with:
• External auditors and regulators, acting as the primary technical point of contact and subject matter expert during corporate certification processes and regulatory reviews.
• Legal and data protection team to ensure information security policies strictly map to European GDPR compliance, data privacy laws, and corporate governance standards.
• Managing Directors and Officers within the UK, US, and ES locations to bridge global information security frameworks with local regulatory mandates and licensing requirements.
• Engineering and Product teams to embed security directly into the software development lifecycle and product roadmap. You will collaborate on secure coding practices, vulnerability management, and ensuring that product architectures (especially crypto/wallet features) are secure by design before release.

Team Leadership: 

• Lead, mentor, and scale a high-performing, fully remote security team.
• Foster a culture of accountability and proactiveness.
• Lead all managerial functions in accordance with the company’s policies and procedures (hiring, training, setting goals, appraising performance, budgeting)

Risk & Incident Management:

• Act as the ultimate point of escalation for global security incidents, ensuring proactive threat hunting and rapid mitigation.
• Manage the oversight of technical risk assessments, such as vulnerability scanning, penetration testing, risk reviews for new applications, and third-party risk assessments

Requirements (Must-Haves)

• Experience: Proven track record in a senior security leadership role (CISO, Director of Security, or Head of Information Security) within the Financial Services or FinTech sector.
• Direct experience steering organizations through complex information security audits, certifications, licensing, and international regulatory compliance.
• Demonstrated experience in creating, implementing, and managing group-level security processes and frameworks.
• Exceptional leadership skills with a proven ability to manage remote, distributed teams. Strong sense of ownership, proactiveness, and high responsibility.
• Language: Fluent English with excellent communication and reporting skills; Ukrainian or Russian will be an advantage.
• Location: Must be physically located and legally authorized to work remotely within Europe.
   

Preferred (Nice-to-Haves)

• Hands-on experience in the Cryptocurrency, Web3, or Blockchain industry,understanding specific security vectors (custody, cold/hot wallet security).

Requirements:

• Strong practical background in accounting + solid IFRS knowledge;
• 2+ years in international companies or cross-border (foreign jurisdiction) environments;
• Good understanding of tax systems, compliance, and reporting;
• Deep knowledge of Ukrainian Accounting Standards (UAS) and Tax Code of Ukraine;
• Experience improving accounting workflows, shortening closing cycles, and driving automation;
• Experience building management reporting from scratch or improving existing systems;
• Confident Excel / Google Sheets user;
• English at least B1 (written + spoken).

Nice to have:

• Exposure to EU / US / LATAM tax systems (VAT, Sales Tax, Income Tax);

• Experience handling and validating primary documents for non-resident entities.

   

Responsibilities:

• Organize and maintain financial data across multiple jurisdictions;
• Run payroll calculations and processing;
• Prepare and submit USC and PIT reporting;
• Ensure accuracy of accounting entries and financial records;
• Support external accountants and tax reporting processes;
• Participate in annual audits and prepare required audit documentation;
• Assist in monthly, quarterly, and annual financial reporting.