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The role We're looking for a senior developer with strong software experience to join the team building our Fleet Management platform. The scope is wide: collecting data from many different sources, processing and analyzing it, turning it into clear visualizations, and building the functionality on top of it — including AI-powered features that help fleet managers make faster, smarter decisions. It's also a chance to work on something that matters beyond the product itself: every efficiency gain we help fleets achieve — less fuel burned, fewer emissions, safer operations — is a step toward a more sustainable maritime industry. More efficient marine operations, built by this team, add up to a better, more sustainable world. What you'll work on New features across the full stack of our fleet management platform — from data collection pipelines to the visualizations and tools fleet managers use every day AI-powered features that turn raw vessel and engine data into actionable insight Data processing and analytics at scale — ingesting, processing, and analyzing data from many different sources System monitoring and maintenance — the team owns what it builds end-to-end, including keeping it running in production Our tech stack Node.js ·TypeScript · React· SQL / PostgreSQL ·Go · Kubernetes· GCP ·Linux · GraphQL· Kafka For AI development: LangChain · LangGraph· Langfuse How we work Our team has strong ownership of the product and makes decisions autonomously — we don't wait for permission to do the right thing. Taking ownership is something we genuinely appreciate. Maintaining and monitoring what we build is part of the job, not someone else's problem. We offer a full-time role, with 2 days a week onsite at our Helsinki office. What we're looking for Senior-level experience developing software Hands-on experience with most of our tech stack (Node.js, TypeScript, React, SQL/PostgreSQL, Go, Kubernetes, GCP, Linux, GraphQL, Kafka) and the ability to pick up the rest quickly Comfortable owning a feature or system end-to-end — from design through to production monitoring Based in, or willing to work from, Helsinki (Kallio) (2 days/week onsite)
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The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.