Senior Flight Platform Software Engineer

ReOrbit; Helsinki; On-site; EUR 90,000 - 140,000; Full time

Benefits offered by this job

Lunch vouchers

Events

Occupational health care

Additional health insurance

Relocation support

Team activities

Job summary

ReOrbit seeks a Senior Flight Platform Software Engineer to advance mission critical software for UKKO, SILTA and future satellite campaigns. You will design, implement and verify flight software, lead code reviews, and mentor junior engineers in Helsinki, Finland.

Join a space-tech start‑up focused on software‑defined satellites, networking, and secure, reliable systems with a multidisciplinary team and collaborative culture.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Aerospace Engineering, or a related field
• Minimum of 10 years of professional experience in embedded systems, distributed systems, or mission‑critical software
• Strong proficiency in C/C++ for embedded or real‑time software, with solid software‑design fundamentals including data structures, concurrency, and debugging
• Demonstrated expertise in core software engineering practices, including system architecture, code reviews, static analysis, CI/CD pipelines, configuration management, and observability/logging
• Solid knowledge of real‑time systems, including scheduling, interrupts, concurrency, determinism, and efficient design for limited compute and memory resources
• Experience with spacecraft software, satellite operations, or aerospace systems
• Understanding of networking protocols, inter‑process communication, or distributed autonomy
• Experience with security‑focused software development for mission‑critical systems

Responsibilities

• Perform the speciation, design, implementation, build and verification of Mission Critical Flight Platform Software aligned with ReOrbit’s software‑defined satellite philosophy.
• Perform thorough code reviews and contribute to architectural and design decision‑making of software.
• Contribute and support tool and infrastructure development and the engineering process evolution of the software team.
• Support mentorship of junior engineers, enhancing technical growth and capability within the team.
• Be able to communicate effectively with systems and test teams to troubleshoot defects and accelerate software integration.

Skills

C/C++ for embedded RT

Distributed systems

Real-time scheduling

Data structures & debugging

System architecture

Code reviews & CI/CD

Observability/logging

Security-focused development

Networking / IPC

Education

Bachelor’s or Master’s degree in Computer Science, Software Engineering, Aerospace Engineering, or related field

Tools

Git

Linux

RTOS

CI/CD pipelines

Job description

ReOrbit is looking for a Senior Flight Platform Software Engineer to join the ReOrbit team and support the software campaigns for our current satellite product lines UKKO, SILTA and future missions.

It’s an exciting chance to join a dynamic start-up, with the opportunity to make a real impact, to reach our goal of pushing the boundaries of space data transfer.

Responsibilities

• Perform the speciation, design, implementation, build and verification of Mission Critical Flight Platform Software aligned with ReOrbit’s software‑defined satellite philosophy.
• Perform thorough code reviews and contribute to architectural and design decision‑making of software.
• Contribute and support tool and infrastructure development and the engineering process evolution of the software team.
• Support mentorship of junior engineers, enhancing technical growth and capability within the team.
• Be able to communicate effectively with systems and test teams to troubleshoot defects and accelerate software integration.

Skills And Requirements

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Aerospace Engineering, or a related field
• Minimum of 10 years of professional experience in embedded systems, distributed systems, or mission‑critical software
• Strong proficiency in C/C++ for embedded or real‑time software, with solid software‑design fundamentals including data structures, concurrency, and debugging
• Demonstrated expertise in core software engineering practices, including system architecture, code reviews, static analysis, CI/CD pipelines, configuration management, and observability/logging
• Solid knowledge of real‑time systems, including scheduling, interrupts, concurrency, determinism, and efficient design for limited compute and memory resources
• Experience with spacecraft software, satellite operations, or aerospace systems
• Understanding of networking protocols, inter‑process communication, or distributed autonomy
• Experience with security‑focused software development for mission‑critical systems

Working at ReOrbit

At ReOrbit, we are focused on building a strong team as we believe nothing can be accomplished without innovative, humble and curious minds working together on a common goal. We’re all about fostering an inclusive, dynamic environment where equality and diversity are our strength.

We offer

• Challenging but rewarding environment you will thrive if you are always reflecting on how to make things better. Your ideas will be heard.
• Ambitious and supportive network of people, who are motivated to change the space industry, bringing expertise from both classic and new space. And most importantly a possibility to be a part of a unique and diverse team, connected by similar mindset and sense of humor.

What does ReOrbit do?

ReOrbit builds the foundation for the next generation of space applications by transforming satellites into truly intelligent, interconnected platforms, defined by software. Our satellite design philosophy revolves around the idea that satellites must network, communicate with each other and thus improve mission efficiency. How can this be achieved? Thanks to a flexible software‑first architecture, where all these aspects are dealt with upfront in the mission concept, as integrated functionalities.

ReOrbit’s top‑notch team of software engineers and system architects develop in‑house software, procure hardware from the best‑in‑class suppliers, and seamlessly integrate the components to create flexible and secure satellites. Today, we are a rapidly growing company building a very strong multidisciplinary team to support our activities. We are headquartered in Helsinki, Finland with a subsidiary in Bariloche, Argentina.

Working at ReOrbit

At ReOrbit, we are focused on building a strong team as we believe nothing can be accomplished without innovative, humble and curious minds working together on a common goal. We’re all about fostering an inclusive, dynamic environment where equality and diversity are our strength.

We offer

• Challenging but rewarding environment – you will thrive if you are always reflecting on how to make things better. Your ideas will be heard.
• Ambitious and supportive network of people, who are motivated to change the space industry, bringing expertise from both classic and new space.
• Benefits such as lunch vouchers, events, parties, occupational health care and additional health insurance - but most importantly a possibility to be a part of a unique and diverse team, connected by similar mindset and sense of humor.
• We like to spend time together! You can choose activities whichever is to your liking – runOrbit, climbOrbit; become ping pong or board games champion.
• We support relocation and integration into the society of the country we are moving into.

The Company may require a security clearance for certain positions. Any such security clearance will be conducted in accordance with applicable law and the Company’s relevant policies.