Assembly Technician,
Electronics Manufacturing
Battery module production — Helsinki, Finland
Superstream is building a new lithium battery module production line in Helsinki — from scratch, in-house. We are hiring 2–3 assembly technicians to join the core team and help create something tangible: a production line, solid processes, and a culture worth being proud of. This is not a role where everything is pre-defined — it is a place for someone who thrives in a developing environment and wants to see their own contribution in the end result.
What you will do
- Assemble lithium battery modules using precise methods and quality standards — carefully and repeatably
- Monitor production flow, identify deviations and take corrective actions
- Participate in quality control, inspections and production documentation
- Develop work instructions (SOPs) and operating practices together with the team — the processes are not finished yet, and that is intentional
- Take ownership of your workstation or process step and make sure things get done
- Help prepare production toward ISO certification alongside the Production & Quality Manager
What we are looking for
- Experience in electronics or mechanical assembly in a production environment — you have done precise, hands-on work in series production
- Experience with quality standards: you have worked where quality is measured and documented, or been part of a process that prepared for or achieved certification
- Long-term, persistent approach: you do not get frustrated when processes are still being developed — on the contrary, you have the patience to build structures that last
- Hands-on and sees things through: you enjoy working on the floor, not planning from an office, and things get finished
- Wants to be part of a core team: small teams mean everyone matters — for better and for worse. You value openness and growing together
- Good documentation habits: you record your work clearly and systematically — in production, information must be written down so others can act on it and deviations stay traceable
- Good English: all documentation is written in English and you communicate confidently in writing
- Finnish Occupational Safety Card (työturvallisuuskortti) — required before starting, or willingness to obtain one
- Experience or active interest in battery technology — lithium batteries, BMS, electrical systems, or a hobby interest in electric vehicles or energy storage
- You have been involved in or witnessed an ISO certification process or customer audit preparation
- Interest in developing processes and continuous learning as part of the job
Why this role
In from the start
You are part of building this — not just executing a pre-written manual.
Small, tight-knit team
Everyone matters. Open, learning culture with no blame game.
Permanent position
Full-time, stable employment — long-term thinking starts with us.
Growing startup
Part of the energy transition — a company that both develops and manufactures battery technology.
Who we are
Superstream is a Finnish battery technology company. We design, manufacture and sell battery systems, and we supply key subsystems — including our own battery management systems (BMS) — to other battery manufacturers. We are now expanding into in-house manufacturing of lithium battery modules in Helsinki, and we are building the team that will make it happen.
Apply
Apply by submitting your application and CV to careers@superstre.am. Briefly describe your work experience and why you are interested in us.
Apply for this role →Superstream is an equal-opportunity employer. We welcome applicants from all backgrounds and are committed to a fair and inclusive recruitment process.