Reaktor

Reaktor is seeking a Machine Learning Engineer in Helsinki to turn machine-learning concepts into production-grade AI services. You will build, deploy, and maintain scalable ML systems that deliver reliable value to customers.

Reaktor is seeking an experienced Senior Native Mobile Developer to build polished native iOS and Android applications for retail clients across European locations. The role combines hands-on mobile development with architecture, stakeholder collaboration, testing, and production quality ownership.

Build end-to-end, LLM-powered applications at Reaktor, integrating leading AI models, RAG pipelines, evaluation systems, and user-facing software. You’ll work closely with clients and cross-functional teams in a collaborative Helsinki-based consulting environment.

Reaktor is seeking an experienced Senior Native Mobile Developer to build polished native iOS and Android applications for gaming and entertainment clients in Helsinki. The role combines hands-on mobile development with architecture, client collaboration, technical direction, and production ownership.

Join Reaktor as a Senior Fullstack Developer in Helsinki, building modern web applications, backend services, and production systems for diverse client projects. You’ll work hands-on across the delivery lifecycle while helping clients solve ambiguous technical and product challenges.

Reaktor is seeking an experienced Senior Fullstack Developer in Amsterdam to build modern web applications, backend services, and production systems for varied client projects. The role combines hands-on software development, technical consulting, and ownership across the full delivery lifecycle.

Reaktor is seeking a Senior Fullstack Developer in Lisbon to build and improve modern web applications, backend services, APIs, and production systems for a variety of client projects. The role combines hands-on engineering, technical consulting, and ownership across the full delivery lifecycle in a hybrid environment.

Join Reaktor’s Lisbon team as a Lead Full-Stack Developer, building thoughtful software across front end, back end, databases, and infrastructure. You’ll work closely with client teams in a collaborative, low-hierarchy environment.