Full Stack JavaScript Engineer (based in Kaunas)_

We are looking for an experiencedFull Stack JavaScript Engineer to join our team inKaunas.

In this role, you will design, develop, test, and maintain software applications across both the front-end and back-end. You will work primarily withJavaScript/TypeScript, Node.js, React, SQL, GraphQL, APIs and messaging systems.

Strong experience with modern software architecture is essential.DDD, CQRS, and Clean Architecture are mandatory.

What you’ll do

• Develop and maintain front-end applications usingReact, TypeScript, HTML and CSS.
• Design and develop back-end services usingNode.js, GraphQL and other JavaScript frameworks and middleware.
• Build and integrateRESTful APIs and web services.
• ApplyDDD, CQRS and Clean Architecture principles in software design and development.
• Write unit and integration tests.
• Participate in code reviews and contribute to technical decisions.
• Troubleshoot and debug application issues.
• Work with other engineers, product managers and stakeholders to define and deliver new features.
• Take part in sprint planning, stand-ups, retrospectives and other agile activities.
• Continuously improve code quality, development practices and engineering processes.
• Keep up with relevant technologies and trends in the JavaScript ecosystem.

What we’re looking for

• 5+ years of professional software development experience.
• Strong knowledge ofJavaScript and TypeScript.
• Solid experience withNode.js and React.
• Good knowledge ofHTML/CSS and SQL.
• Strong understanding and practical experience with:
  • Domain-Driven Design (DDD)
  • CQRS
  • Clean Architecture
• Experience designing and building production-grade software across the full stack.
• Good understanding of APIs, software architecture and testing.
• Ability to work independently and take ownership of technical solutions.

Nice to have

• CI/CD pipelines.
• Message brokers.
• ORM technologies.
• GraphQL.
• Deeper knowledge ofvanilla JavaScript, V8, WebAssembly or related technologies.

What we offer

• Kaunas-based hybrid role with the possibility to work remotely3 days per week.
• Competitive salary of€4,485–€5,950 gross/month, depending on experience and technical expertise.
• Additional health insurance, includinggym subscription coverage.
• Professional development opportunities, including access toUdemy.
• Modern, well-equipped office.
• Team events and other company benefits.
• Opportunity to work on challenging software engineering projects and grow your technical expertise.