Senior Power System Engineer Verified today

ReOrbit · Helsinki, Finland · Space Systems · first seen 2026-08-14

Join ReOrbit's mission to deliver GEO capabilities in a smaller, faster, and more cost-effective package through the SiltaSat project. As Senior Power Systems Engineer, you will work end-to-end from design and development to Assembly, Integration and Test (AIT) alongside a team of experts.

Your Responsibilities

  • Analyze payload and propulsion power modes across all mission phases
  • Define power subsystem architecture based on mission requirements
  • Create requirement specifications for power subsystem, PCDU, battery unit, solar arrays, and SADA
  • Interact with external battery, solar array, PCDU and SADA vendors and internal subsystem teams
  • Develop documentation based on architecture, analysis and unit specifications
  • Lead subsystem AIT and define EGSE requirements and acceptance criteria

Your Experience and Skills

  • Minimum 10 years in power systems engineering within the GEO space industry, preferably on large satellites
  • Professional experience across the full lifecycle of power systems subsystems
  • Strong analytical skills: data analysis, design documentation review and approval, change management
  • Proven collaboration with external vendors, consortium partners and cross-functional teams
  • Fluent written and spoken English

About ReOrbit

ReOrbit builds intelligent, interconnected satellite platforms defined by software. The team develops in-house software, procures from best-in-class suppliers, and integrates components to create flexible and secure satellites. Headquartered in Helsinki with offices in Bristol, Bariloche, and Bangalore.

What We Offer

  • Challenging and rewarding environment where your ideas are heard
  • Ambitious and supportive team of people motivated to change the space industry
  • Lunch vouchers, occupational health care and additional health insurance
  • Team activities: runOrbit, climbOrbit, competitive gaming and board games
  • Support with relocation and integration into Finnish society

A security clearance may be required for this position in accordance with applicable law and company policy.