Full Stack JavaScript Engineer (based in Kaunas)_

We are looking for an experienced Full Stack JavaScript Engineer to join our team in Kaunas.

In this role, you will design, develop, test, and maintain software applications across both the front-end and back-end. You will work primarily with JavaScript/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 using React, TypeScript, HTML and CSS.
• Design and develop back-end services using Node.js, GraphQL and other JavaScript frameworks and middleware.
• Build and integrate RESTful APIs and web services.
• Apply DDD, 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 of JavaScript and TypeScript.
• Solid experience with Node.js and React.
• Good knowledge of HTML/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 of vanilla JavaScript, V8, WebAssembly or related technologies.

What we offer

• Kaunas-based hybrid role with the possibility to work remotely 3 days per week.
• Competitive salary of €4,485–€5,950 gross/month, depending on experience and technical expertise.
• Additional health insurance, including gym subscription coverage.
• Professional development opportunities, including access to Udemy.
• Modern, well-equipped office.
• Team events and other company benefits.
• Opportunity to work on challenging software engineering projects and grow your technical expertise.