Senior Fullstack Developer

We are seeking an experienced fullstack developer to modernize the client’s ERP operating system UI using React and Java, with a focus on AI-assisted, agent-driven development. The role is primarily remote, with a long-term contract and full remote work option. The candidate will refactor and modernize the legacy ERP UI and logic into a React/Java-based architecture, build views such as search pages, editors and dialogs, design REST APIs behind the UI, and create agent-driven development tooling and checks at scale. Qualifications include advanced TypeScript and React skills, extensive experience building web products end-to-end, strong practical experience with agent-based development (e.g., Claude Code) and creating controller files, ability to work with a large legacy codebase, and excellent eye for functional and visually polished UIs. Proficiency in English is required; Finnish language skills are a plus. Experience with Java and REST APIs, ERP or other mission-critical systems, GIS/locational data tools, and cloud services (AWS) are desirable.

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