Senior Full Stack Developer Ukraine (Java, React)

We fuse together exceptional talent who deliver outstanding software solutions. Our approach has helped us grow 60% in 2021, 94% in 2022, while in 2023 we joined forces with Insight, a Fortune 500 company and a leading solutions and systems integrator. With exciting growth plans and cutting‑edge projects, there has never been a better time to join our incredible team.

Senior Full Stack (Java + Kotlin + React) Developer

We are looking for a Senior Full Stack Developer to work on an international software development project. The role will involve the latest technologies in a collaborative, high‑energy environment. You will build a career you can be proud of and support development from day one. You will work in a team and lead by example every day.

Full Stack Developer Responsibilities

• Design and implement backend services using Kotlin or Java.
• Collaborate with frontend developers or implement frontend features in React.
• Develop APIs and integrate with front‑end and third‑party systems.
• Participate in proof of concepts (PoCs) and assist in complex feature development.
• Ensure scalability, maintainability, and security of backend systems.
• Write unit and integration tests for backend components.
• Collaborate with DevOps to ensure smooth deployments.

Full Stack Developer Requirements

• 7+ years of experience.
• Graduate of a systems engineering degree or similar.
• Hands‑on experience with Kotlin or Java.
• Experience with Quarkus or Spring Boot frameworks.
• Strong experience with React, including hooks, state management, and component‑based architecture.
• Familiarity with TypeScript, modern CSS frameworks, and responsive design principles.
• Experience integrating React with backend APIs (REST and GraphQL).
• Strong knowledge of micro‑frontends.
• Strong knowledge of SQL and NoSQL databases (PostgreSQL, MongoDB).
• Experience with Reactive Programming paradigms.
• Familiarity with Kafka and event‑driven architecture.
• Strong knowledge of microservices and API design.
• Knowledge of front‑end build tools, testing frameworks, and performance optimization.
• Experience with CI/CD pipelines and containerization.
• Ability to quickly learn and adopt new technologies.
• Experience using GitHub Copilot or similar AI tools for coding.
• Excellent verbal communication skills in English.

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