Jobs at Djinni

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest AI communities in Europe.

About the role: 
We are looking for a Full Stack Engineer to join the CTO Office and take ownership of our client’s product development lifecycle. You'll work hand-in-hand with the CTO Office team, taking initiatives that have been validated as POCs and leading them into production-grade, scalable solutions.

Responsibilities:
- Take validated POCs from the CTO Office and architect, build, and ship them as production-ready applications
- Design and develop full-stack solutions — modern frontends paired with robust, scalable backends
- Build and deploy within the AWS ecosystem (Lambda, ECS/EKS, DynamoDB, S3, RDS, API Gateway, CDK/CloudFormation, and more)
- Own the CI/CD pipeline — design, build, and maintain automated workflows using GitHub Actions
- Design and build internal agentic AI solutions using LangChain and LangGraph — from multi-step agent orchestration to RAG pipelines and tool-augmented workflows
- Leverage Agentic IDE tools (Cursor, Claude Code, and similar) as a core part of your development workflow, applying best practices around skills, MCPs, agents, and prompt engineering to accelerate delivery
- Collaborate closely with the CTO Office, product stakeholders, sales, and pre-sales teams to translate business needs into elegant technical solutions 
- Make pragmatic technology decisions that balance speed, quality, and maintainability

Requirements:
Must-Have:
- 5+ years of professional full-stack development experience
- Frontend: Strong proficiency with Vue.js or React (with modern tooling such as Nuxt/Next.js, TypeScript, Vite, Tailwind CSS)
- A builder's mindset — you thrive on taking something from prototype to production
- Understanding of system design principles — you can architect scalable, reliable distributed systems and make sound trade-offs
- Grasp of data structures and design patterns — to work alongside your Agentic IDE you write efficient, well-structured code
- Backend: Solid experience with Python and modern frameworks — primarily FastAPI, or Django/Flask
- Hands-on experience with the AWS cloud ecosystem — you've built and deployed real workloads on AWS
- Hands-on experience building agentic AI systems with LangChain and LangGraph — including multi-agent orchestration, tool use, and RAG patterns
- Proven experience designing and maintaining CI/CD pipelines with GitHub Actions including automated PR based Code Reviews.
- Working knowledge of Agentic IDEs and AI-assisted development (Cursor, Claude Code, Windsurf, or similar) — including familiarity with skills, MCP servers, agents, and AI-driven development best practices
- Strong understanding of RESTful API design, relational and NoSQL databases, and cloud-native architecture patterns

Nice-to-Have:
- Experience with Amazon Bedrock and/or Azure AI Foundry for building and deploying AI/ML solutions on managed cloud platforms
- Experience with Infrastructure as Code (AWS CDK, Terraform, CloudFormation)
- Experience in security infrastructure (IDP, authentication protocols - S) and writing secured applications 
- Security & Identity - understanding of application security, including SSL/TLS certificates, secret management, and identity providers (IDP). Experience implementing authentication and authorization protocols such as SAML, OAuth2, and JWT.
- Foundational SRE knowledge, including monitoring, logging, and observability (e.g., CloudWatch, Prometheus, ELK) to ensure production stability and performance.
- Familiarity with FinOps concepts, cloud cost management, or multi-cloud environments
- Experience building data-driven tools — predictive models, analytics dashboards, or recommendation engines
- Exposure to Azure services alongside AWS
- Experience with containerization and orchestration (Docker, Kubernetes)
- Background in B2B SaaS or enterprise software development

At Promova, we’re redefining language education for the AI-powered era — making learning accessible, personal, and inspiring for millions of people worldwide. Our 150+ teammates unite around one mission: to connect people, bridge cultures, and empower lifelong learners — in every country except aggressor states (yes, even Antarctica).

We blend AI innovation with human creativity to help people speak with confidence and truly belong anywhere. If you want to test bold ideas, move fast, and make an impact — you’ll feel right at home.

About the Role

We're looking for a User Acquisition Manager to launch and scale paid acquisition from scratch for a new live education product within the Promova ecosystem. 

You will be the first UA specialist on this project — owning the full cycle from day one: tracking setup, campaign launches, global scaling. 

No bureaucracy, no approval chains — just a fast-moving setup where you can influence everything.

Sounds like what you've been looking for? It is.

Why This Role is Your Next Challenge

• You're the first UAM on this product — and the one deciding how to grow it from zero to millions of users. Full autonomy and real ownership.
• No gap between marketing and product — campaign insights go straight into development; the focus is on LTV and retention, not just performance.
• No dark monetization practices. No 6-step upsell funnels. A customer-centric product built to deliver real value.
• The infrastructure is already there — Claude integrations, marketing auto-rules, bulk campaign setup, creative agents, and others. Not built from scratch, built to scale.

Your Areas of Impact

• Set up and run paid campaigns in Meta: from account preparation and audience targeting to scaling performance.
• Support the analytics system: set up Appsflyer, Pixel and CAPI, and turn data into actionable marketing insights.
• Achieve sustainable profitability by meeting ROI/ROMI targets and controlling CPA.
• Search for the growth opportunities by testing new audiences, markets, and marketing approaches.
• Test initiatives: develop hypotheses, run experiments, and scale successful strategies.
• Partner with cross-functional teams to align objectives, exchange insights, and enhance overall performance.

What We’re Looking for

Core experience:

• 1+ year in performance marketing with hands-on Meta Ads experience.
• Proven expertise in mobile direct-buy UA: you know how to run and scale app campaigns.
• Deep understanding of AppsFlyer, SKAN, and CAPI. 
• Testing mindset: ability to form hypotheses, run experiments, and scale what works.
• English B1+.

Bonus points:

• Experience with Tiktok Ads, Google Ads, Apple Search Ads.
• Background in EdTech or language learning products.
• Already built app tracking from zero — Pixel, CAPI, full setup.

Corporate Benefits

🎓Growth — offered to help develop your skills, advance your career, and reach your full potential: сompensation for additional training at external events and seminars; access to a large electronic library; paid online courses and conferences;

🧘🏼Wellbeing — offered to support your overall health, happiness, and resilience: work remotely from any safe location worldwide; flexible work schedule; 20 paid vacation days per year; an unlimited number of sick days, medical insurance coverage; mental health support; power station reimbursement; employee discounts and special benefits for remote employees.

🏄🏼‍♂️Fun & Activities — offered to foster informal communication and strengthen social connections among teammates: remote team compensation for gathering and team-building episodes.

Interview Process

• Intro-call with Recruiter
• Meeting with the Hiring Manager
• Test Task
• Bar-raising

Interested? Apply now and let’s make the growth happen!

Not your thing? Got a recommendation? Check this out!

We’re looking for a dynamic and enthusiastic Project Manager to join our Design & Web Solutions Business Unit. In our fast-paced environment, things move quickly, so you’ll need to stay ahead by adapting to new tools and technologies with ease. Being results-driven and able to manage multiple tasks simultaneously will be key to your success.

Our Project Managers are professionals at bringing ideas to life. They not only understand the underlying business goals behind requirements but also provide teams with valuable user insights, drive projects to completion, and ensure we deliver exceptional experiences that delight our customers.

Requirements:

• At least 3 years of project management experience in a dynamic environment
• Proficiency in Agile, Scrum, and Kanban methodologies and tools
• Strong organizational and multitasking skills
• Critical thinking and problem-solving abilities
• Experience managing stakeholders and aligning team capabilities with client needs
• Excellent verbal and written communication skills
• Ability to meet tight deadlines while maintaining quality
• Quick learner, adaptable to new tools and processes
• Proven track record of delivering projects aligned with business objectives
• Strong interpersonal skills and ability to lead cross-functional teams
• Upper-Intermediate or higher level of English

Will be a plus:

• Knowledge of design workflows and tools (Figma, Sketch, Adobe Creative Suite)
• Experience communicating effectively with design teams

Personal Profile:

• Results-driven and proactive
• Flexible and adaptable to change
• Strong leadership and team motivation skills
• Detail-oriented with a focus on quality
• Excellent collaboration and interpersonal skills

Responsibilities:
 

Project estimation and planning:

• Lead the estimation process, defining project scope, timelines, and resource requirements for creative, graphic design, and web development projects (WordPress, WebFlow, etc.)
• Develop detailed project plans and schedules, ensuring all phases are accounted for — from concept to delivery

Project activities control, time, and effort tracking:

• Monitor project progress, ensuring tasks are completed on time and within budget
• Track team effort, project hours, and deliverables to ensure efficient use of resources and adherence to timelines
• Provide regular project status updates to stakeholders and management

Team coordination:

• Coordinate with cross-functional teams, including designers, developers, and marketing specialists, ensuring smooth collaboration
• Ensure all team members are aligned with project goals, timelines, and deliverables

People management:

• Lead and motivate the project team, providing guidance and support to ensure high performance
• Foster a positive work environment where team members can collaborate, solve problems, and grow professionally

Team utilization:

• Ensure optimal utilization of team members by assigning tasks based on skills, availability, and project needs
• Balance workloads across the team to prevent burnout and maintain productivity

Project risk management:

• Identify potential project risks early on, assess their impact, and develop mitigation strategies to minimize risks
• Proactively address issues as they arise, ensuring projects stay on track

Successful execution and delivery of projects:

• Ensure projects are executed efficiently and delivered within the agreed scope, budget, and timelines
• Maintain a high standard of quality in all deliverables, ensuring they meet both client and internal expectations

Customer business needs identification and product solution selection:

• Work closely with clients to understand their business needs and goals
• Collaborate with internal teams to recommend optimal solutions that align with client objectives and add value to their business

Support in developing marketing strategies:

• Contribute to the creation of marketing strategies, especially concerning internal branding and Sigma Software’s identity.

About the Role

We are looking for a VIP Player Manager to build and maintain strong relationships with our most valuable players.

In this role, you will be the main point of contact for VIP clients, providing a high level of personalized service and ensuring an exceptional player experience. You will communicate with players via messengers and outbound phone calls, helping to increase loyalty, engagement, and retention.

Work schedule: 2/2 shift.

Key Responsibilities:

• Build and maintain long-term relationships with VIP players.
• Communicate with VIP clients via messengers (Telegram, WhatsApp, live chat).
• Make outbound calls to VIP players to maintain engagement and strengthen relationships.
• Provide high-level personalized support and resolve player requests promptly.
• Assist VIP players with deposits, gameplay, and withdrawals.
• Inform players about exclusive promotions, bonuses, and special offers.
• Work on player retention and reactivation.
• Monitor player activity and identify opportunities to increase engagement.

• Collaborate with VIP, CRM, and Support teams to improve the overall player experience.

   

Requirements:

• English – mandatory (B2 level or higher).
• Experience in iGaming / online casino / betting / VIP support will be a strong advantage.
• Experience working with iGaming platforms such as SOFTSWISS and with CRM platforms such as Customer.io will be a strong advantage.
• Experience in customer service, account management, or VIP client management.
• Strong communication and relationship-building skills.
• Client-oriented mindset and ability to work with high-value players.
• Ability to multitask and work in a fast-paced environment.
• Responsible, proactive, and detail-oriented approach.

We Offer:

• Opportunity to work in an international iGaming project.
• Competitive salary + performance bonuses.
• 2/2 shift schedule.
• Friendly and professional team environment.
• Opportunities for career growth and development.

Are you the kind of person who instinctively tries to break things just to make them better? Do you enjoy uncovering hidden edge cases, questioning assumptions, and ensuring users get a seamless experience every time?
 

They are looking for a QA Engineer who thrives on exploratory testing, adversarial thinking, and delivering exceptional product quality. In this role, you’ll work closely with Product, Engineering, and Design teams to shape reliable, user-centric experiences across web and mobile platforms.
 

This is an opportunity to have a real impact - not just by finding bugs, but by influencing quality standards, improving testing processes, and helping teams ship with confidence.

 

What You’ll Do
 

• Design, maintain, and execute detailed manual test plans for new features and releases
• Dive deep into exploratory and adversarial testing to uncover edge cases, usability gaps, and unexpected behaviors
• Identify, document, prioritize, and track issues throughout the development lifecycle
• Investigate API logs and network traffic using tools like Charles Proxy, Fiddler, or Chrome DevTools to pinpoint front-end vs. back-end issues
• Validate complex user flows, backend data integrity, and database states
• Partner closely with developers to troubleshoot problems and verify fixes
• Clearly communicate testing progress, known risks, and release readiness across teams
• Ensure flawless functionality, UI/UX consistency, and responsiveness across web, iOS, and Android platforms
• Maintain clean and actionable bug reports and testing documentation
• Collaborate cross-functionally with Product, Design, and Engineering to continuously improve product quality
• Contribute to evolving QA practices, workflows, and testing standards
• Use AI-powered tools and workflows to improve testing efficiency, bug analysis, and quality processes
  
   

What They’re Looking For
 

• 4+ years of experience in manual QA or software testing
• Strong experience creating and executing comprehensive manual test plans
• A curious, detail-oriented mindset with a passion for finding issues before users do
• Solid understanding of web and mobile technologies, including:
  • HTTP
  • HTML
  • Client-server architecture
  • Caching
  • SQL & NoSQL databases
• Strong troubleshooting, bug tracking, and prioritization skills
• Experience validating APIs, backend flows, and complex data interactions
• Excellent communication and collaboration skills in cross-functional environments
• Comfortable working in fast-paced product and engineering teams
• Experience using AI tools to improve productivity, workflows, or testing efficiency
• Bachelor’s degree in Computer Science, a related technical field, or equivalent practical experience
   

Nice to Have

• Experience coding in Java, Python, or JavaScript
   

Why This Role Stands Out

You won’t just execute test cases - you’ll help shape product quality from the ground up. They value people who think critically, challenge assumptions, and bring a strong sense of ownership to the user experience. If you enjoy solving complex problems, collaborating with smart teams, and making products better every day, this could be the right fit for you.

Ever worked in an environment where engineers are expected to challenge bad code instead of silently accepting it?
Where spotting hidden bugs, architectural problems, and security risks matters more than shipping features fast?
Where your opinion is valued specifically because you can say: “this implementation is wrong and here’s why”?

If you’re confident reviewing unfamiliar systems, care deeply about engineering quality, and prefer direct technical communication over corporate politeness - this role is for you.

About the Company

Our client is a Switzerland-based trading technology company building a stock trading platform used for real-time trading operations and financial workflows.

The platform includes: real-time market data, order entry & order management, portfolio management, watchlists & alerts, trading dashboards, internal CRM systems.

The Role

We’re looking for a Senior Software Engineer focused on architecture review, code quality, reliability, and technical evaluation across multiple systems.

This is not primarily a feature-development role.

You’ll work with existing production systems, reviewing and evaluating code written in Python, TypeScript/React, and partially Rust-based environments.

What You’ll Do

Review & Evaluate Engineering Quality

• Analyze backend and frontend codebases critically
• Review architecture using Clean Code, SOLID, and DDD principles
• Detect technical debt and maintainability risks
• Evaluate pull requests and engineering decisions

Hunt Bugs & Reliability Problems

• Detect race conditions and async issues
• Identify off-by-one errors, null/None problems, and memory leaks
• Review concurrency behavior and hidden edge cases
• Identify production risks early

Improve System Performance

• Analyze scalability and Big-O complexity
• Detect N+1 queries and inefficient backend logic
• Identify unnecessary React re-renders
• Find bottlenecks affecting reliability or responsiveness

Review Security & Infrastructure Risks

• Evaluate systems against OWASP Top 10 risks
• Detect SQL injection vulnerabilities and secret leaks
• Review unsafe input handling and path traversal risks
• Evaluate dependency vulnerabilities (CVEs)
• Review Tauri IPC sandbox/security issues

Evaluate Testing Standards

• Review pytest, vitest, and cargo test implementations
• Identify weak coverage and missing edge cases
• Evaluate TDD quality and mocking approaches
• Detect gaps between “tests passing” and real reliability

Work Across Modern Tooling

• Use ruff, mypy, eslint, and clippy
• Review Git diffs and PR workflows
• Read and evaluate API integration code
• Detect misuse of OpenAI, Anthropic, or Gemini SDKs
• Review REST/WebSocket reliability patterns (retry logic, idempotency, etc.)

What You Bring

• Strong experience as a Senior or Staff-level Software Engineer
• Deep expertise in Python 3.11+
  • Typing
  • Async programming
  • Pydantic
• Strong TypeScript 5+ and React 19 experience
• Ability to read and evaluate Rust code (Tauri 2 ecosystem)
• Strong understanding of software architecture and engineering quality
• Experience reviewing unfamiliar codebases quickly
• Strong debugging and analytical skills
• Confidence giving direct, critical technical feedback
• Ability to prioritize issues by severity (Critical / Major / Minor)
• Upper-Intermediate English or higher
• German reading skills required (comments, commits, and technical discussions may partially be in German)

Nice to Have

• Experience reviewing ffmpeg or Pillow pipelines
• Familiarity with Vector DB or ONNX-related code patterns
• Experience in trading, fintech, or high-reliability systems

What You Get

• Engineering-First Environment: Work with teams that care about architecture, maintainability, and technical correctness - not just feature velocity.
• Real Technical Influence: Your feedback will directly impact engineering standards, code quality, and technical decisions.
• Complex Systems: Trading infrastructure, async workflows, performance-sensitive systems, and real-world scalability challenges.
• Direct Communication Culture: The company values honest technical feedback, critical thinking, and engineering maturity over hierarchy or corporate formalities.
• Strong Autonomy: No micromanagement. Engineers are trusted to make technical judgments and take ownership.

Ready to Work Where Code Quality Actually Matters?

If you enjoy analyzing complex systems, identifying critical issues before production does, and working in a direct, high-level engineering environment —

👉 Apply now and help improve systems built for reliability, performance, and scale.

About the client

Our client is a venture-backed AI-powered platform built specifically for consumer brands. It connects to sources like banks, POS systems, and advertising platforms to deliver daily profit & loss snapshots, cash flow plans, and peer benchmarking - all in real time. With integrations across finance, e‑commerce, and marketing tools, Iris provides the clarity and automation brands need to grow confidently 
 

What You’ll Do

• Design, implement, and maintain core backend services using JavaScript and Python.
• Build and manage reliable API endpoints, ensuring smooth data flow between internal systems.
• Write clean, well-tested code to process and transform financial data.
• Monitor service health, troubleshoot issues, and ensure system reliability and performance.
• Partner with product, data, and frontend teams to define integration requirements and API contracts.
• Create tools and dashboards to track system usage, performance, and data integrity.
• Review and improve code quality, and contribute to best practices in testing, documentation, and deployment.
   

What We’re Looking For

• 5+ years of professional experience in software engineering, focused on back-end, integration, or data engineering roles.
• Proficiency in JavaScript (Node.js, NestJS) and Python, with experience building RESTful APIs.
• Hands-on integration experience with external APIs (OAuth, pagination, webhook handling, rate limiting, retries, etc.).
• Strong data modeling skills — familiarity with JSON, SQL/NoSQL, schemas, data validation, and transformations.
• Experience with cloud infrastructure (AWS, GCP, or similar) and containerization (Docker, Kubernetes).
• Excellent debugging and monitoring practices: logging, metrics, tracing, and automated alerting.
• Strong communication & collaboration skills; ability to work with cross-functional teams.
• Bonus: Familiarity with financial systems (accounting platforms, bank APIs, POS systems) and ML-enhanced data pipelines.
   

What We Offer

• Competitive salary aligned with market standards, with annual salary reviews.
• A friendly, collaborative startup environment where you can drive impact in a mission-critical space for growing consumer brands.
• High-growth opportunity - join early and help shape a cutting-edge product used by high-velocity, finance-driven companies.
• Access to modern tech stack, including serverless/cloud-native solutions, event-driven pipelines, and experimentation with LLMs/AI for data validation.
• Generous time off, flexible work arrangements, and commitment to work-life balance.

About the role

We are building a revolutionary system at the frontier of technology and AI.

As a AI-native Engineer, you won’t just write code — you will shape the future of how apps are built. You’ll be part of the early execution engine—shipping core capabilities, refining the experience, and elevating reliability. Expect tight loops, clear ownership, and visible impact. You'll engage directly with first clients, adapt the platform to their needs, and set the stage for the next generation of software creation.

What we’re looking for

We want someone who doesn’t just “fit the role” but defines it:

• Open-minded explorer: ready to try bold ideas, new approaches, and cutting-edge tools.
• Hacker mindset & problem solver: able to connect the dots across complex systems and find elegant solutions.
• Analytical and resilient: thrives in debugging intricate, interconnected architectures.
• Startup speed enthusiast: comfortable hacking fast, shipping early, learning from feedback, and polishing later.
• Experienced in Cursor, Claude Code or other AI coding assistants.
• Passionate about AI-driven Engineering: turning AI into your engineering team-mate.
• Natural leader: with the drive to inspire and guide people.

Why join us?

• Be among the first engineers driving a bold, world-changing vision.
• Work at the bleeding edge of technology and AI, where experimentation is not just allowed but expected.
• Direct influence on product.
• A chance to build something that reshapes how things get done in today’s world.
• A team that values curiosity, creativity, and the pure joy of hacking together the future.

This isn’t just another job. This is your chance to engineer the future of software itself.

Technical stack 

!Prior experience with these technologies isn't mandatory, provided you demonstrate a strong willingness to learn and leverage AI tools. At the end of the day, we consider these to be just tools wielded by a SE.

Core technologies:

• TypeScript, React.js, Next.js, Bun.
• ClickHouse, PostgreSQL, Redis
• Docker / Kubernetes
• Kafka
• Supabase, Inngest, Posthog

Nice to have:

• Vue.js
• Python
• Go
• Ruby

Hiring Process

Stage 1: Interview with HR (1h).

Stage 2: Interview with VP of Engineering.

Stage 3: Tech. Interview

Stage 4: Interview with the team.

What we offer for your success

• Very warm and friendly working environment and flexible working schedule.
• 20 days off + paid national holidays, and 12 sick days paid by the company per year.
• Medical insurance, and health protection programs (with COVID-19 and dental coverage).
• Continuous professional development and growth opportunities.

Web Design Sun is a software development company founded in 2012. Since day one, we have been fully remote, building international products in Web & Cloud Applications, SaaS, CRM/ERP, and Ecommerce domains. We collaborate with clients from the US and Europe and consistently rank highly on Clutch, GoodFirms, and Upwork.

We are looking for a Business Development Manager who can turn opportunities into contracts and negotiations into real revenue.

Requirements:
 

• 2+ years of experience in active sales (IT Outsource / Outstaff)
• Strong understanding of SDLC and modern Web Application technologies
• Proven full-cycle sales experience: from intro call to contract signing
• Strong negotiation and presentation skills
• Experience in preparing commercial proposals and working with CRM systems
• English — Advanced (C1+), fluent communication with clients
   

Responsibilities:
 

• Work with leads together with the Lead Generation team and convert them into clients
• Conduct intro calls, identify client needs, and present suitable solutions
• Manage the pre-sale process with Tech Leads and Business Analysts (estimation, scope)
• Prepare commercial proposals and handle negotiations
• Close deals and contribute directly to company revenue
• Work with CRM and achieve individual sales targets
   

We are looking for someone who:
 

• Builds trust with clients, not just “sells”
• Is resilient and able to work with long sales cycles
• Takes ownership of results and acts proactively

• Is focused on numbers and closed deals

   

We offer:
 

• Full-time, remote
• Location: Europe (or similar time zone), with availability to align with the team’s working hours  
• Flexible schedule focused on results (with availability in the evening, 20:00–22:00 Kyiv time)
• Compensation: $1500–2000, including a fixed base and a percentage from closed deals
• Opportunity to influence and improve sales processes
• Strong team support (Lead Gen + Tech + BA)
• 20 paid vacation days and 5 paid sick leave days
• Day off on your birthday and company-observed holidays
• Established processes for effective remote work
   

Hiring process:
 

• Recruiter interview
• Test task
• Final interview with the Head of BDM Department
• Offer
   

We value people who take ownership of results, think like a business, and influence what they build.

Interested in the role?
Send us your CV — we will review your profile and get back to you within 5 business days.

We are looking for a motivated and enthusiastic Trainee Full-Stack React & Node.js developer to join our dynamic team. This position is suitable for candidates starting their software development journey, who want to grow both in frontend and backend engineering and gain real experience working with international projects.

Responsibilities

-  Adaptation of solutions according to customer requirements.

-  Front-End development using React.js.

-  Back-End development using Node.js.

-  Follow a structured learning plan and continuously improve core competencies.

-  Participate in hands-on sessions and apply learned concepts to real project tasks.

-  Actively communicate with mentors and senior developers, discussing progress and technical challenges.

Requirements

- Understanding of Progressive Web Apps and Accelerated Mobile Pages.

- Familiarity with Jenkins, Jira, Confluence, Bitbucket.

-  Experience with some of the following: CSS-preprocessors (LESS, SASS), Docker, WebSockets, MQTT.

-  Frontend development experience using React.js.

-  Experience with backend development.

-  Experience developing web-based software products using Node.js.

-  Experience with several of the following: NPM, Webpack, Yarn, TypeScript, JavaScript, SPA, MongoDB.

-  Experience with Git.

-  Skills with reusable components.

-  Skills with automated testing and performance testing.

-  Knowledge of JS architecture practices.

-  Understanding of OOP and SOLID principles.

-  Understanding of web development paradigms (RESTful APIs, pub/sub, security).

- Experience with building performant and scalable applications.

-  Good spoken English.

Would be a plus

-  Understanding of Progressive Web Apps and Accelerated Mobile Pages.

-  Familiarity with Jenkins, Jira, Confluence, Bitbucket.

-  Experience with: LESS, SASS, Docker, WebSockets, MQTT. 

Working conditions

-  Full remote internship with international projects

-  Real conditions for special personal growth and development

-  Friendly and high skilled team with a huge commercial background

-  Training at the company expense with a mentors

-  Open process for the adapting to the client requirements and interviews

-  Permanent improvements personal qualities and skill 

Internship opportunity

We are also ready to take an intern without experience, with spoken English.
There is a possibility of remote internship and training with further employment.

Senior Full Stack Engineer

We’re building the Production ready system from the PoC and looking for a Senior Full Stack Engineer who enjoys creating scalable products and taking ownership of real technical decisions. You’ll work closely with product and design teams, shape parts of the architecture, and help turn ideas into a production-ready platform.

Requirements:

• 5+ years of software development experience with JavaScript, TypeScript, and modern ES6+
• Strong experience with React and Next.js
• Strong experience with backend development using Node.js / NestJS
• Hands-on experience with MongoDB and PostgreSQL
• Hands-on experience with MQTT
• Experience building applications that can be deployed on both OnPrem and Cloud platforms
• Experience building scalable applications and contributing to system architecture
• Ability to take ownership of features and technical solutions
• Comfortable working in fast-paced, product-driven environments
• Strong communication skills and ability to collaborate with both technical and non-technical stakeholders
• Upper-Intermediate English (B2+)

Nice to Have:

• Experience with React Native or WebSockets
• Experience working in startup or early-stage environments
• Experience with Azure, IoT Hub, Microsoft Entra ID
• Previous experience mentoring engineers or contributing to technical leadership

Responsibilities:

• Develop and deliver key features of a new product from concept to launch
• Contribute to the design and implementation of scalable frontend and backend architecture
• Collaborate closely with product, design, and engineering teams
• Take ownership of technical solutions and help drive implementation
• Participate in code reviews and maintain high engineering standards
• Contribute to development best practices and team workflows
• Support and mentor less experienced engineers when needed
• Continuously improve performance, reliability, and scalability of the platform.

Department: Data Platform
Reports to: Data Engineering Lead
Employment Type: Full Time
Work Model: Fully Remote
Location: Remote EMEA

 

About Traffic Label

Traffic Label is a fast-growing, data-driven technology company operating in the iGaming and affiliate marketing space, building scalable products focused on performance, analytics, and automation across global markets.

What we’re building
We’re building a Customer Data Platform: one unified player profile across our group of brands. The platform should help the business:

 

• Improve acquisition. Understand who actually converts, and why others don’
• Increase conversion. Replace generic flows with journeys built for the specific player in front of us.
• Segment players properly. Who’s a high-value player? Who’s at risk of leaving? Who’s a VIP?
• Reactivate before churn. Spot players who are about to leave and bring them back with offers that match what they actually want.

Tech stack:

• Snowflake (with Snowpipe and Cortex Analyst LLM agent).
• dbt, Python.
• Airflow (Astronomer), AWS (S3, Lambda), Terraform, GitHub Actions.
• Omni BI on top. Reverse ETL into marketing platforms.
• Medallion architecture: bronze, silver, gold.

We’re early in the build, and the person we hire helps shape the foundation.

Role Overview
You sit between the business (Product Owner, stakeholders) and the engineering team.
About 30% of your time is practical data work: validating that CDP capabilities behave as specified, exploring data before specs are written, testing hypotheses for new capabilities, building shared gold layer models that consumer teams use, and helping those teams understand what data is available. It is not business reporting or analytics built for individual brands.

The other 70% is Systems Analysis: turning what you find into specs engineers can build from, owning data quality from symptom to root cause, raising what isn’t right before it ships, and shaping the semantic layer so other business lines can find and trust the data.

Four things define the systems analysis side:

1. Turn business intent into specs that engineers can build from. Talk to stakeholders, figure out what they actually need, and write it down. Each spec covers source schema, target model, transformation logic, business glossary, schedule, data quality checks, consumer, and use case. Stay reachable through development. Engineers will have questions.
2. Find and fix data quality problems at the root, alongside the engineering function. Trace lineage, identify the cause, work with the data source owner on the fix, check downstream impact, and close the loop.
3. Confirm what’s delivered does what we said it would. Validate against the spec you wrote. When the data isn’t right, you raise it before it ships.
4. Make data usable beyond the team that asked for it. Contribute to the semantic layer, data descriptions, and shared definitions so other business lines can find what they need, understand what it means, and trust it without going through you each time.

You work on the Data Platform layer: CDP build, identity resolution, data quality, semantic definitions, and governance. Business analytics on top of the platform, such as dashboards and performance reports for specific brands, is produced by analyst teams aligned to those brands. Your job is to make sure those teams can do theirs: trustworthy data, clear definitions, fast issue resolution.

The team
You sit within the Data Platform alongside:

• A Product Owner who sets the roadmap and business priorities.
• The Data Engineering function. Your manager (Data Engineering Lead) and the engineers building the platform.
• Embedded QA function. Owns automated validation.
• Shared DevOps across the wider organisation.

Where you’ll start
Identity resolution. Deterministic matching is already running in our MDM across five data sources. You extend coverage to the remaining sources and validate match quality at scale. The harder cases are future scope: hashed identifiers without keys, duplicates across sources, device and behaviour signals. They start when we add dedicated ML engineering capacity, with no committed timeline yet. You’ll own the spec and acceptance for that work when it begins.

Skills & Experience

• SQL. Expert level. Window functions, complex joins, and root cause investigation on large datasets.
• dbt. Practical experience. You can write models, write tests, and debug them.
• Python. Comfortable for ad hoc analysis, scripting, and data manipulation.
• Confident across the modern data stack. You investigate problems yourself instead of waiting for DE, and you can explain the root cause to the business in plain language.
• Medallion or layered data architectures.
• You’ve written specifications that engineers built from.
• You’ve owned a data quality problem from “something looks off” to “fixed at source”.
• You can talk to business stakeholders and a backend engineer in the same hour without losing either of them.
• Background in iGaming, affiliate marketing, SaaS, or other high-volume digital businesses.
• Experience unifying customer or user profiles across sources, sometimes called Customer 360 or Single Customer View. Angles: identity matching, semantic modelling, etc.

What We Offer

• Opportunity to work on scalable, high-impact products in a growing iGaming business
• Collaborative and fast-paced engineering environment
• Exposure to modern technologies and architecture
• Competitive salary and performance-based incentives
• Flexible working environment and supportive team culture

We at King Group are engaged in the development and promotion of entertainment products for users around the globe. Having successfully launched and scaled to profitability a number of new products within the last two years, we are on the constant run for new highs. Due to the rapid development of the emerging business segment of social gaming for Tier-1 countries, our team is looking for a talented and enthusiastic User Acquisition Manager to join our Facebook Ads team.

Working with us, you will have a wide freedom of action and space for your growth, spanning from full control over the creatives to be launched, to unlimited budgets, as well as working with Tier-1 GEO with an audience of 300+ million people. 

Key responsibilities:

• Creation, management and optimization of advertising campaigns in Meta Ads, encompassing full cycle of user acquisition management
• Testing of new Paid Social and other performance channels and technologies
• Working with and managing a number of projects with 6-figure monthly budgets
• Analytics of key indicators in all channels: CAC, ROMI/ROAS, CRs, LTV, etc.
• Ongoing testing of creatives, various funnels and strategies
• Participation in building a marketing and communication strategy for the brands together with the team.
   

Key requirements:

• At least a year of experience with Paid Social traffic sources (Meta Ads) with B2C products preferably aimed at Tier1 countries
• Deep understanding of digital marketing and lead generation domain
• Ability to research, replicate and come up with new creative ideas and funnels for traffic generation
• Ability relentlessly execute your ideas to get things done, to tackle problems on your own as well as being a team player
• Strong analytical skills: experience working with data and metrics as well as data-driven decision-making
• Upper-Intermediate English.

You'll want to work with us because we:

Care about your health:

• Health insurance;
• 24 calendar days of vacation;
• Compensation for sick days;
• 50-75% payment for a healthy lifestyle.

We charge with inspiration thanks to:

• A friendly team of like-minded colleagues who are always ready to help and support in the most difficult times;
• Absence of bureaucracy;
• Opportunities for professional and career growth;
• High competitive salary.

We create comfort with the help of:

• Effective organization of workflow and quick decision-making;
• Office format of work with the ability to work remotely 1 day a week: we have a new modern work space with uninterrupted Internet and charging stations, as well as a stylish terrace, a relaxation area where you can distract yourself playing PS5, table football, darts or just relax in a massage chair;
• Convenient office location within walking distance from the Lybidska or Druzhby Narodiv metro stations;
• Compensation for corporate lunches.

We are a Ukrainian outsourcing company Join.To.IT, founded in 2012, and delivering software solutions across diverse business domains.
We focus on building long-term partnerships with our clients and delivering solutions that create real business impact. Our team consists of experienced professionals who take ownership of their work, value clear communication, and are committed to high standards in everything they do.
At Join.To.IT, we create an environment where engineers can grow, influence technical decisions, and contribute to meaningful projects alongside a strong and supportive team. 
     Responsibilities

• Manage the full sales cycle from lead generation to deal closure
• Work with Upwork as the main client acquisition channel
• Communicate with potential clients and conduct negotiations
• Prepare commercial proposals and participate in project estimations
• Collaborate with technical teams during pre-sales stages
• Build long-term relationships with clients and identify upsell opportunities

      Requirements

• Experience in IT sales / Business Development
• Strong experience working with Upwork
• Understanding of outsourcing/outstaffing business models
• Good communication and negotiation skills
• Ability to work with technical teams and understand project scope
• Upper-Intermediate+ English level
  We Offer
• Office-based work format (Kyiv, near Vasylkivska metro station with shelter, Starlink and uninterrupted power supply)
• Free gym access near the office
• Paid vacation and sick leave
• Medical Insurance
• Compensation for professional courses and development
• Supportive and loyal management

We are looking for a Machine Learning Engineer to design and implement intelligent systems that power personalized digital experiences across connected devices and mobile applications.

This role is ideal for someone who thrives at the intersection of ML models, data pipelines, and product integration. You will collaborate closely with backend engineers, data scientists, and product managers to bring ML-driven features into production and continuously optimize them based on real-world usage.

Responsibilities:

• Design, train, and deploy machine learning models for use cases such as personalization, recommendations, and visual analysis;
• Build and maintain scalable, production-grade data pipelines (batch and real-time);
• Collaborate with product and engineering teams to translate product ideas into ML-powered features;
• Implement model observability, monitoring, and retraining workflows;
• Optimize inference performance and model serving in resource-constrained environments (e.g., edge or mobile);
• Contribute to the architecture of a modern ML platform within a cloud-native microservices environment;

• Work with backend teams to expose model outputs via APIs and integrate them into customer-facing experiences.

   

Requirements:

• 3+ years of experience in applied machine learning or data science;
• Strong knowledge of:
  • Supervised learning, recommendation systems, or computer vision;
  • Python and ML libraries such as TensorFlow, PyTorch, scikit-learn;
  • Building, deploying, and maintaining ML models in production.
• Familiarity with:
  • MLOps tools (e.g., MLflow, TFX, Airflow, Vertex AI);
  • Data pipelines and messaging systems (e.g., Kafka, BigQuery, dbt);
  • Model serving frameworks (e.g., FastAPI, TensorFlow Serving, TorchServe, ONNX);
• Comfortable collaborating with product, engineering, and analytics teams;
• Experience with cloud platforms (GCP, AWS, or Azure) and container-based deployments;
• Bonus: Experience with edge AI, mobile ML, or video/image processing pipelines.

We Offer:

• Remote work and flexible working hours.
• Legal support.
• Paid sick leaves.
• Paid vacations.
• Medical insurance. 
• Free English classes.