Senior Full-Stack Web Developer

Shape the Future of IT with Advaun Advaun Oy builds software that helps businesses run better. We develop web applications, AI systems, health care and industrial solutions, and we are creating our own AI-powered ERP/MES platform for manufacturers. Our goal is to help businesses grow with the best IT solutions. We are looking for a Full-Stack Web Developer (mid-level to senior, ~3+ years experience) to join our team in Helsinki/Espoo. Why Join Advaun Build real products used by real customers Full ownership across frontend, backend, and APIs Startup environment with fast learning and real impact Modern tech stack: Python, TypeScript, Angular, React, PostgreSQL Your Responsibilities Design, build, and maintain full-stack web applications Develop APIs using REST, GraphQL, and OpenAPI Work with PostgreSQL and structured data models Contribute to system architecture and integration design Write clean, testable, production-quality code Collaborate with the team and contribute ideas Requirements Minimum of 3+ years experience in software development Enthusiastic about software development Strong skills in: Python TypeScript Angular or React Solid understanding of: REST APIs GraphQL OpenAPI Software testing principles Experience with PostgreSQL or similar databases Independent and solution-oriented mindset Fluent in English (Finnish is a plus) Full-time On-site work (minimum of 4 days/week in office) Currently located in Helsinki greater region for full-time on-site work (or willing to commute every day) Please note that we are NOT able to offer relocation package or visa support Nice to Have Knowledge of HL7 FHIR Experience in healthcare software development What We Offer A key role in a growing startup where your work matters Opportunity to build AI, health care and industrial systems Flexible and supportive working environment On-site Office in Helsinki, Espoo Weekly yoga, Monday breakfast, 24/7 gym Team events and collaborative culture Apply Send your CV and salary expectations to link: https://forms.gle/Svjd4TwrRKDuSYAA8 Recommended: GitHub or coding sample project links with source code Recommended: LinkedIn profile Link to personal website We review applications and conduct interviews on a rolling basis. The position may be filled before the deadline if a suitable candidate is found.