Jobs at Djinni

SnoopGame QA is in search of a Trainee QA. We specialize in manual game testing services, catering to publishers and developers worldwide.

Over the past decade, we've meticulously tested more than 1500 games spanning various genres, from Hyper Casual to AAA. Presently, we proudly stand as Ukraine's foremost company, equipped with remarkable achievements and the proficiency to conduct diverse manual testing across multiple platforms.

Our core mission is to deliver game QA precisely tailored to meet the standards necessary to ensure the quality of games that are accessible to all. Our objective is to contribute to a gaming world that is more enjoyable and accessible for everyone.

Responsibilities:
— Plan testing and compile test documentation.
— Participate in the testing process at all stages of development.
— Communicate with individuals involved in the development process.
— Verify corrected defects.
— Prepare error reports and more.

Required Skills:
— English proficiency: at least B2.
— Understanding of modern gaming applications.
— Knowledge of testing theory.
— Ability to write test documentation.
— A rich gaming experience in various genres.
— Desire to develop in game development testing with the best experts in this field.

We offer:
— Working hours: 10:00 AM to 7:00 PM (including 1-hour lunch break).
— Paid vacation: 20 workdays per year, 10 sick days per year.
— Gradual salary increase to $800 over 1.5 years, with a review after 6 months.
— Using Confluence, Slack, and Trello for smooth communication and collaboration.
— English lessons with a native speaker and interactive sessions (exercises, quizzes, games).
— Performance reviews and rewards based on contributions.
— Corporate sessions with a psychologist, including 1-on-1 meetings and open feedback culture.
— Equipment provided.
— Public holidays are day off.
— Team-building events and corporate activities.
— A friendly team of gaming and tech enthusiasts.

If you want to start your journey as a Game QA, send us your CV and cover letter.

• M365 Administration: Manage and maintain Microsoft 365 services, including Entra ID, Copilot, SharePoint Online, Teams, OneDrive for Business. Ensure the availability, performance, and security of these services.
• Designing, developing, testing, and deploying custom applications and workflows that leverage the Power Platform.
• Security and Compliance: Implement and manage security measures to protect M365 environments. Ensure compliance with industry standards and regulations.
• User Support and Training: Provide technical support to end-users and conduct training sessions to enhance their understanding and usage of M365 services.
• Collaboration: Work closely with cross-functional teams to integrate M365 services with other enterprise applications. Participate in meetings and provide updates on the status of ongoing projects.
• Automation and Scripting: Develop and maintain automation scripts using PowerShell to streamline administrative tasks and improve efficiency.

About the Role: 
We are seeking a Team Lead HR to serve as the primary HR expert for our Kyiv office in the defense technology sector. You will manage all HR activities locally, ensure strict compliance with labor laws and security requirements, support talent development, and implement global HR policies adapted to Ukrainian regulations. 

Key Responsibilities: 

• Advise local management on HR matters, employment law, and compliance with security requirements. 
• Lead recruitment, onboarding, and talent management for the local team. 
• Support performance management, learning, and professional development initiatives. 
• Administer HR processes: maintain employee records, manage leave, sick days, holidays, and working schedules. 
• Maintain timekeeping, attendance, and payroll-related data. 
• Handle employee relations, retention programs, and local HR administration. 
• Ensure accurate HR records, reporting, and adherence to legal and security standards. 
• Promote company culture and values within a highly regulated environment. 

Requirements: 

• Bachelor’s degree in HR, Business, or related field. 
• 5+ years of HR experience, preferably in multinational or defense/miltech companies. 
• Strong knowledge of local labor law, HR compliance, and security requirements. 
• Experience in recruitment, performance management, and employee relations. 
• Excellent communication, discretion, and interpersonal skills. 
• Ability to operate independently while aligning with global HR policies. 

We are looking for a Data / Backend Engineer to architect and scale the core data infrastructure behind our healthcare marketing platform. In this role, you will design high-throughput data systems that process millions of behavioral events, power real-time attribution and user scoring, and enable precise targeting of healthcare professionals across 20+ channels.

You will work at the intersection of data engineering, backend systems, and marketing infrastructure, building scalable pipelines, tracking systems, and APIs that support analytics, segmentation, and campaign activation. The role also involves experimenting with AI-powered automation and agent-based workflows to improve internal operations and product capabilities.

This is a high-ownership position where you will shape architecture decisions, build critical platform components from the ground up, and help evolve our data platform as the company scales.

Responsibilities

- Architect and own data-heavy backend systems powering real-time attribution, user modeling, and scoring

- Build and evolve client-side tracking pixels (like FB pixel / Amplitude snippet / Heap autocapture) from scratch

- Set up and manage scalable ETL workflows: cleaning, merging, enriching, splitting, transforming across millions of behavioral events
Lead the build of CDP / CDXP-style data layers to support segmentation, scoring, and activation across channels

- Connect and compose systems using modern low-code / no-code tools (n8n) to accelerate ops

- Implement and maintain high-availability APIs for analytics, scoring, and campaign delivery

- Drive experimentation around AI-powered agents and automation tools that can boost internal workflows

Requirements

- System Design & Data Architecture:
Designs scalable, event-driven data platforms with strong decoupling, fault tolerance, and horizontal scalability. Builds real-time and batch pipelines using lakehouse architectures and streaming systems (Kafka / PubSub).

- Distributed Data Processing (Spark / BigQuery / Iceberg):
Expert in large-scale data processing, query optimization, and cost-efficient analytics. Deep understanding of Spark execution, partitioning, and modern table formats (Iceberg / Delta).

- Cloud & Infrastructure (GCP / Kubernetes):
Builds resilient cloud-native data platforms on GCP and Kubernetes using IaC, autoscaling, and secure access (IAM, Workload Identity).

- Python Engineering:
Develops high-performance Python services for data and ML workloads with focus on concurrency, clean architecture, and production-grade quality.

- Databases & Performance (PostgreSQL / OLTP):
Optimizes high-throughput OLTP systems through indexing, partitioning, and query analysis (EXPLAIN ANALYZE, MVCC).

- Reliability & Observability (SRE):
Implements resilient data systems with idempotency, retries, observability, SLOs, and incident management.

- AI / LLM Integration:
Integrates LLMs into production pipelines with structured outputs, caching, batching, prompt versioning, and evaluation.

- Workflow Orchestration (Airflow / Dagster):
Designs scalable DAG-based workflows with dependency management, retries, and reproducible backfills.

- CI/CD & DevOps for Data:
Implements safe deployments for data systems including schema migrations, canary releases, and data contracts.

- Ownership & Engineering Maturity:
Owns end-to-end production systems and architecture decisions while balancing delivery speed, quality, and technical debt.

Nice-to-have: 

- Experience in MarTech / AdTech platforms (e.g., DSPs, attribution systems, DMP/CDP tools)

- Deep knowledge of data matching/fingerprinting techniques (identity graphs, IP + UA resolution, hashed PII workflows)

- Strong prompt engineering skills — not just ChatGPT 101, but chaining, system prompting, tooling integration

What We Offer
- Fully remote with flexible hours (aligned with EU timezones for syncs).
- Influence on quality strategy across the entire engineering organization.
- A cross-team role with visibility into every part of the product.
- AI-first tooling.
- Claude Code licenses and cutting-edge AI development workflows. 
- A team with no bureaucracy, decisions are made fast.

 We're Hiring: Web Scraping Support Engineer (Remote)
Hello everyone! Massive is looking for a Web Scraping Support Engineer to join our fully remote team. If you dream in selectors, wake up parsing HTML, and genuinely enjoy helping people solve gnarly data extraction problems — this one's for you.

 What is Massive?
Massive is an infrastructure company powering data-driven innovation at scale. We operate a global proxy network, build managed APIs for search engines (SERP), and Web Unblocking API to bypass anti-bot measures for large-scale data collection and processing.

 Why This Role Is Different
Most support roles are reactive. This one isn't. You're the person customers trust when their scraping pipeline breaks at 2 AM, when a target site changes its structure overnight, when nothing works and nobody knows why. You don't just answer tickets — you solve problems that other engineers can't.

 Who We're Looking For
 

• Troubleshoots in Their Sleep: Broken selectors, anti-bot walls, rotating proxies, CAPTCHAs, headless browser quirks — you've seen it all and you fix it before your coffee gets cold
• AI is your best friend - you know how to leverage AI to be 10X faster and more productive
• Customer-Obsessed & Likable: You're the person customers ask for by name. You explain complex concepts in plain language and people genuinely enjoy working with you
• Can Scrape Anything, Anywhere: SPAs, paginated APIs, rate-limited endpoints, geo-restricted content — if it's on the web, you know how to extract it
• Consumes Data for Breakfast: You think in JSON, dream in XPath, and get excited about a well-structured dataset
• Relentlessly Organized: Your support board is pristine. Every ticket triaged, every follow-up tracked, every edge case documented. Nothing slips through — ever
• Curious Builder: When you notice the same issue three times, you don't just fix it — you automate the solution so it never comes back

 What You'll Be Doing
 

• Own the support board end-to-end with the support team — triage, prioritize, resolve, and follow up on every ticket
• Debug complex web scraping issues across proxy configurations, browser automation, and API integrations
• Help customers build, optimize, and fix their scraping pipelines
• Reproduce issues, identify root causes, and escalate bugs with full context to engineering
• Write documentation and guides that reduce repeat tickets

 Bonus Points
 

• Experience with Puppeteer, Playwright, Selenium or similar browser automation
• Hands-on with proxy networks and IP rotation strategies
• Familiarity with anti-bot systems (Cloudflare, Akamai, PerimeterX, DataDome)
• Working knowledge of Python, Node.js, or scripting languages for data extraction
• no satisfaction until all the work is done and then some

 Ready to Scrape the Future With Us?
Skip the generic resume. Show us something real — a scraper you built, a gnarly problem you debugged, a support process you transformed. We care about what you can do, not where you went to school.
If you read this and thought "finally, someone gets it" — trust that feeling. Apply now.

Location: Warsaw!
Start: as soon as possible
Duration: long-term
Languages: Polish is mandatory !! English: B2

Project domain: telecommunication

Hybrid: 1-2x week in Warsaw | 5+ years Java exp | English B2+
 

• Backend Core: Expert-level Java 21+ (Virtual Threads, Records) and Spring Boot 3.x production proficiency.
• Reactive & Security: Spring WebFlux/WebClient for non-blocking I/O; Spring Security with OAuth2/JWT validation.
• Event-Driven Architecture: Designing high-scale ecosystems with eventual consistency, idempotency, and process orchestration.
• Migration Leadership: Leading domain-specific transitions from Java to Node.js/TypeScript (Key Differentiator).
• API Design: Contract-first development with OpenAPI 3.x and automated client generation.
• Database & State: Spring Data MongoDB (document modeling) and distributed state handling with Redis/Caffeine.
• Observability: Micrometer, Prometheus, and OpenTelemetry for distributed tracing and post-mortem analysis.
• Resilience: Advanced Resilience4j implementation (retries, backoffs, rate limiting, and graceful degradation).
• Testing & Tooling: Spock/Groovy (BDD), WireMock, and Maven multi-module management.

E-Memory is a Legacy Tech startup on a mission to preserve the digital soul. We transform fragmented social media archives into permanent, AI-narrated family legacies. The backend is ready; the data is waiting. We now need a Frontend Architect to build the window into these memories.

The Focus: Velocity & Impact
 

We are in a "Zero-to-One" phase. We need someone who finds joy in building things from the ground up and understands that perfection is the enemy of the shipped.

• Rapid Prototyping: The ability to translate a vision into a functional, high-fidelity Next.js interface quickly.
• Pragmatic Excellence: Knowing where to use robust libraries to accelerate development and where to write custom code for core performance.
• Autonomy: You will own the frontend roadmap. We value engineers who bring solutions, not just code.
   

Technical Requirements
 

• Next.js Mastery: Deep expertise in App Router, Server Components, and advanced caching.
• Performance-First Mindset: Experience handling media-heavy applications (optimizing large image/video galleries for mobile).
• Refined UI/UX: A strong eye for detail using Tailwind CSS and Framer Motion. The interface must feel "living" and respectful.
• PWA Expertise: Ensuring "Phygital Portals" (QR-triggered) load instantly, even in low-connectivity areas.
   

 What We Value
 

We are a small, dedicated team. You will be a great fit if:

• You prefer delivering value over over-engineering complex abstractions.
• You are comfortable with ambiguity and can pivot based on user feedback.
• You enjoy collaborating directly with founders to shape the product's soul.
• You have 5+ years of experience, ideally having seen a product go from 0 to users.
   

How to Apply
 

We value your time and keep our process lean. Please email hi@e-memory.io with:
 

1. A Portfolio/GitHub Link: Highlighting a project you are proud of (specifically focusing on UI or speed).
2. The Engineering Perspective: In an MVP stage, how do you balance the need for a "perfect" architecture with the need to ship features to users next week?

Location: Warsaw!
Start: as soon as possible
Duration: long-term
Languages: Polish is mandatory !!, English: B2

Project domain: telecommunication

Hybrid: 1-2x week in Warsaw | 4+ years Architect exp | English B2+
 

• Systems Design: Mastery of DDD (Bounded Contexts, Ubiquitous Language) and distributed systems (CAP theorem, eventual consistency).
• Tech Evaluation: Strategic oversight of TS/Node/Bun, React 19, PostgreSQL, Kafka, and Kubernetes.Migration Patterns: Lead execution of Strangler Fig, Anti-Corruption Layers (ACL), and Branch by Abstraction strategies.
• Documentation: Establishing organization-wide SDD standards using C4 Model and Diagrams-as-Code (Mermaid/PlantUML).
• API & Commerce: Designing Headless/Composable architectures using OpenAPI 3.1 and oRPC for multi-channel orchestration.
• AI Orchestration: Designing agentic workflows to translate SDDs into architectural skeletons and code templates.
• Security & Resilience: Implementation of STRIDE threat modeling, Zero Trust principles, and Circuit Breaker/Bulkhead patterns.
• Validation: Spending 40% of time on technical spikes, POCs, and high-level code reviews to ensure compliance.

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

We are looking for a skilled Senior Flutter Developer.

✅ Responsibilities:
✔️ Development and improvement of crucial components of the platform
✔️ Make the product testable
✔️ Participate in grooming, planning, tech, and estimation sessions
✔️ Make your own decisions on the architecture level
✔️ Bring fresh and innovative ideas into the company’s processes
✔️ Support and improve product documentation
✔️ Couch Middle/Junior team members
✔️ Code review

✅ Requirements:

✔️ 3+ years of hands-on mobile development experience (Android or iOS)

✔️ 2+ years of hands-on Flutter development experience (at least 1 application released in the store)

✔️ Solid knowledge of Dart (including Dart streams / RxDart)

✔️ Solid knowledge of mobile architecture principles

✔️ Good knowledge of OOP/SOLID principles

✔️ Good knowledge of REST and Sockets

✅ Nice to Have:
✔️ Kotlin

✔️ Java

✔️ Swift

✔️ Experience with CI/CD process

✔️ Experience with Unit and Functional testing of mobile applications

✅ We offer excellent benefits, including but not limited to:
✔️Snacks in the Office;
✔️20  days of vacation per year;
✔️6 days of sick leaves without document required;
✔️Attractive office location and facilities - Loftmill;
✔️Medical insurance for you and your partner;
✔️Sports package;
✔️Birthday, wedding, and newborn gifts;
✔️Languages classes (partially paid by the Company);
✔️Career growth opportunities;
✔️International corporate parties, great team-building events and activities.

We are looking for a Senior Backend Engineer to join our Legal Tech engineering team and help build the next generation of AI-driven litigation ecosystem. This role combines top-tier backend engineering, cloud architecture, and cutting-edge LLM/AI innovation.

You’ll build high-scale, secure, multi-tenant services that turn our real-time transcription engine into AI-powered workflows and assistants used by legal teams. The role offers real ownership and chances to lead initiatives, while giving you space to grow your skills in AI development and modern dev-AI tools — all within a supportive, collaborative team.

This role is for people who bring passion, curiosity, and a genuine drive to build something meaningful as part of a strong, mission-driven team.

This is a remote position based in Ukraine. Candidates must have full professional proficiency in English.

What makes Verbit unique?
Verbit turns speech into impact. Our team of 250 professionals builds AI-driven solutions that help the world’s leading organizations get real value from their audio and video content. We serve high-end customers across the Legal, Media and Education markets with a next-generation verbal-intelligence platform that brings AI into the core of their workflows.

Our in-house technology combines advanced LLMs, GenAI capabilities and speech AI to power everything from legal-tech automation and real-time insights to intelligent media and learning workflows. Beyond transcription or accessibility, Verbit provides actionable intelligence: smart summaries, analytics, search, knowledge extraction, legal-deposition insights and more.

With more than 3,000 global customers relying on Verbit — including top law firms, universities, enterprises and media organizations — we’re building the future of how speech data is processed, understood and used.

     If you want to join our journey, you’ll need:

• 7+ years of hands-on backend development experience in a high-scale production environment
• Strong proficiency with Python, REST APIs and Cloud (e.g. AWS, GCP)
• Strong experience designing and building distributed, cloud-native microservices
• Experience with event-driven architectures and asynchronous processing
• Solid understanding of system design, scalability, availability, and performance optimization
  Practical experience using AI-powered development tools (e.g., Cursor, Claude Code)
• A significant advantage if you have practical experience with AI infra, such as: RAG, Agentic frameworks, Langfuse, LiteLLM
  Ability to take ownership and drive projects end-to-end, working proactively and independently and as a team in a fast-moving environment

• Good communication skills and teamwork
  Ability to work efficiently both individually and within a team

   

  It will be even better if you have:

• Formal education in relevant fields (CS, Math, Electrical Engineering etc.)
• Experience with large scale SaaS solutions
• Ability to integrate AI/LLM features into backend services (e.g., prompting, embeddings, RAG pipelines, fine-tuning)

🚀 Hi! Welcome to Megafair — an international startup provider in the skill-based and slot iGaming niche, where excitement meets intellectual challenge. We create high-quality, innovative gaming products that set new industry standards and captivate players worldwide.

With a truly global team, we work across multiple markets, blending creativity, technology, and expertise to deliver exceptional gaming experiences. Our vision is bold, and our plans are big — this is your chance to join us from the ground up and grow together with a fast-scaling startup.

If you’re ready to be part of a team where every idea matters, challenges inspire, and achievements are celebrated, MegaFair is the place to make your mark.

REQUIREMENTS

• 5+ years of experience as a DevOps Engineer;
• Strong expertise in AWS (EC2, S3, RDS, EKS) and tools like Jenkins and Ansible;
• Hands-on experience with IaC (Terraform, CloudFormation);
• Solid knowledge of networking, security, and CI/CD pipelines;
• Experience managing high-load production systems;
• Strong understanding of scalability, availability, and distributed systems;
• Experience with Docker and Kubernetes;
• Proficiency in Python, Bash, or PowerShell;
• Familiarity with databases (SQL/NoSQL) and queue systems (Kafka, RabbitMQ);

• English level B2+.

   

WE OFFER

• Compensation: competitive salary;
• Tech tools: modern technical equipment;
• Time Off: 20 vacation days, 10 sick days annually;
• Work-Life Balance: flexible remote, options without time tracking;
• Language Learning: reimbursement for foreign language courses;
• Support network: work with a team you can learn from, and every day;
• Diversity: we pride ourselves on our international working environment;
• Power supply: compensation for electricity, power banks, generator fuel, etc.;

• Professional Growth: emphasis on internal promotions for career advancement.

   

RESPONSIBILITIES

• Ensure the smooth operation and reliability of the production system;
• Develop and implement a robust observability capability for both technical and product-level Key Performance Indicators (KPIs);
• Design, implement, and maintain Continuous Integration/Continuous Deployment (CI/CD) pipelines for efficient software delivery;
• Identify and implement strategies for cost optimization within the infrastructure and operations;

• Implement and maintain security measures to safeguard the integrity and confidentiality of the system.

   

CANDIDATE JOURNEY

Interview with a Recruiter — Interview with CTO — Interview with DevOps — Job Offer

We are seeking a Senior Python Developer with AI or ML experience to join our AI & Data project. In this role, you will combine high-end machine learning engineering with a revolutionary approach to software delivery. You will not just build AI; you will build AI using AI, orchestrating agentic workflows to deliver complex solutions at a velocity traditional teams cannot match.

You will focus on building practical, production-ready solutions that bridge the gap between unstructured data and structured logic using LLMs, agentic workflows, and knowledge representations (ontologies, knowledge graphs). You are expected to be an "AI-Native" pioneer, utilizing tools like Claude Code, Cursor, Antigravity, and custom MCP servers to automate your own development lifecycle - from data exploration and model evaluation to code generation and documentation.

Requirements:

• 4+ years of professional experience in software engineering (Python) 
• Proven experience with AI or ML projects, with accountability for end-to-end delivery in a production environment.
• Strong proficiency in Python and the modern AI or ML ecosystem (e.g., PyTorch, Hugging Face, LangChain/LangGraph, Scikit-learn), with a strong foundation in engineering best practices such as code modularity, testing, and version control.
• Hands-on experience with data ingestion, RAG pipeline optimization, model evaluation, deployment (MLOps), and monitoring, including CI/CD pipeline development and containerization using tools like Docker or GitHub Actions.
• Deep understanding of generative AI (LLMs, embeddings, RAG, prompt engineering, and agentic reasoning) and its practical constraints (latency, cost, safety, hallucinations).
• Experience turning complex business needs into "machine-ready" technical specifications and acceptance criteria.
• Evidence of using modern GenAI tools (Claude Code, GitHub Copilot, etc.) to significantly accelerate your development and testing process.
• Good English to work in a multinational team
• Strong problem-solving and follow-up skills; must be proactive and take initiative

Responsibilities: 

• Design, develop, and maintain scalable Python applications and services that integrate AI/ML components.
• Write clean, testable, and efficient code following software engineering best practices
• Implement containerization and deployment workflows using Docker and/or Kubernetes
• Design and implement solutions that combine the reasoning power of LLMs with the precision of structured knowledge (ontologies/knowledge graphs).
• Apply structured 4-phase debugging to ML pipelines, focusing on root-cause analysis of hallucinations, retrieval failures, and data drift.
• Define and automate "Skills" (prompt libraries, evaluation scripts, and deployment templates) to be reused across multiple AI-Native pods.
• Define and implement quality gates, safety metrics, and cost-control practices for GenAI components.
• Work independently on development tasks with a minimal amount of supervision

What is in for You: 

Culture of caring. At GlobalLogic, we prioritize a culture of caring. Across every region and department, at every level, we consistently put people first. From day one, you’ll experience an inclusive culture of acceptance and belonging, where you’ll have the chance to build meaningful connections with collaborative teammates, supportive managers, and compassionate leaders. 

Learning and development. We are committed to your continuous learning and development. You’ll learn and grow daily in an environment with many opportunities to try new things, sharpen your skills, and advance your career at GlobalLogic. With our Career Navigator tool as just one example, GlobalLogic offers a rich array of programs, training curricula, and hands-on opportunities to grow personally and professionally.

Interesting & meaningful work. GlobalLogic is known for engineering impact for and with clients around the world. As part of our team, you’ll have the chance to work on projects that matter. Each is a unique opportunity to engage your curiosity and creative problem-solving skills as you help clients reimagine what’s possible and bring new solutions to market. In the process, you’ll have the privilege of working on some of the most cutting-edge and impactful solutions shaping the world today.

Balance and flexibility. We believe in the importance of balance and flexibility. With many functional career areas, roles, and work arrangements, you can explore ways of achieving the perfect balance between your work and life. Your life extends beyond the office, and we always do our best to help you integrate and balance the best of work and life, having fun along the way!

High-trust organization. We are a high-trust organization where integrity is key. By joining GlobalLogic, you’re placing your trust in a safe, reliable, and ethical global company. Integrity and trust are a cornerstone of our value proposition to our employees and clients. You will find truthfulness, candor, and integrity in everything we do.

About the Role

We are looking for an experienced Senior Rust Developer to join a high-impact project focused on building scalable, high-performance backend systems. You will work on server-side logic, APIs, and distributed systems, contributing to robust and efficient data processing solutions.

Key Responsibilities

• Design and develop backend services using Rust in production environments
• Implement and maintain REST, gRPC, and WebSocket APIs
• Build scalable, reliable server-side logic and data processing pipelines
• Optimize system performance, concurrency, and resource usage
• Ensure data integrity, validation, and consistency across services
• Work with distributed systems and microservices architectures
• Collaborate on containerized deployments (Kubernetes)
• Write clean, maintainable code and contribute to testing and quality assurance
• Participate in code reviews and work effectively within large codebases

Required Skills & Experience

• Strong hands-on experience with Rust (production level)
• Deep understanding of asynchronous programming and concurrency
• Experience designing and building APIs (REST, gRPC, WebSockets)
• Solid background in backend development and distributed systems
• Experience with performance optimization and high-load systems
• Knowledge of relational databases
• Familiarity with Kubernetes and containerized environments
• Understanding of data validation and integrity principles
• Ability to work efficiently with large and complex codebases

Candidate Profile

• Proven experience as a Senior Backend / Rust Developer
• Strong problem-solving skills and attention to detail
• Comfortable working in a distributed, remote team
• Able to align with GMT-5 working hours
• Good communication skills in English (B1+)

Location: Warsaw!
Start: as soon as possible
Duration: long-term
Languages: Polish is mandatory !!, English: B2

Hybrid: 1-2x week in Warsaw | 4+ years React exp | English B2+
 

• Core Stack: Expert-level React 19+ (Hooks, Suspense, RSC) and TypeScript (Strict Mode, Utility Types, Generics).
• Architecture: Next.js (Web) and Turborepo/Nx for unified monorepo management across platforms.
• State & Forms: XState/TanStack Query (no Redux), Zod, React Hook Form, and nuqs for type-safe params.
• Styling & UI: Tailwind CSS v4+ and NativeWind for cross-platform component consistency.
• Performance Engineering: Expert profiling of Core Web Vitals (LCP, INP, CLS) and React Native bridge/memory optimization.
• Quality Assurance: Vitest, React Testing Library, and Playwright with a focus on 80%+ critical path coverage.
• BFF & API: Next.js API routes and oRPC for end-to-end type safety.
• AI & Security: Designing agentic workflows for dev-velocity; expert OWASP Top 10 mitigation and dependency auditing.

Intetics Inc., a leading American technology company specializing in custom software application development, distributed professional team creation, software product quality assessment, and end‑to‑end digital solutions, is looking for a Senior Kotlin Developer to join a long‑term project.

Responsibilities

• Design, develop, and maintain backend services using Kotlin and Java
• Build scalable microservices with focus on performance and reliability
• Participate in architecture design and technical decision‑making
• Work with asynchronous and reactive programming (Coroutines, Flow, WebFlux)
• Integrate systems using Kafka, Redis, and relational databases
• Ensure high code quality through testing and code reviews
• Mentor and support other team members
• Collaborate with cross‑functional teams in English

Required Skills & Experience

• Strong experience with Kotlin (Coroutines, Flow) and Java (Core)
• Deep understanding of JVM, multithreading, and concurrency
• Experience with Spring Boot, Spring WebFlux, Spring Data
• Hands‑on work with PostgreSQL, SQL, JPA / R2DBC
• Experience with Kafka, Redis
• Knowledge of Docker and Kubernetes
• Experience with observability tools: Prometheus, Grafana, Micrometer
• Familiarity with Camunda BPM
• Strong testing background: JUnit, Kotest, MockK, Testcontainers
• Solid understanding of DDD and microservice architecture
• English level: B1 or higher

Nice to Have

• Experience working in distributed teams
• Previous mentoring or tech‑lead responsibilities
• Production experience with high‑load systems

Why Join

• Challenging and technically strong project
• Real influence on architecture and technical decisions
• Professional team with strong engineering culture