Senior Digital Twin Engineer - Real-Time Simulation

ReOrbit; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Lunch vouchers

Events & parties

Occupational health care

Relocation support

Health insurance

Job summary

ReOrbit in Helsinki is seeking a Senior Digital Twin Software Engineer to advance simulation and real-time control for UKKO, SILTA and future missions. You will co-design networked digital twin systems, build telemetry and messaging layers, and help shape architecture.

We value strong C++ expertise, experience with high-fidelity simulations, and hardware-in-the-loop integration. Join a fast-growing space-tech startup focused on secure, software-first satellite platforms.

Qualifications

• BS/MS in Physics, CS, or Software Engineering required.
• 4+ years in simulation software development with architecture, code review, CI/CD, testing and V&V.
• Strong object-oriented C++ for simulators.
• Experience integrating hardware and software in the loop.
• Experience developing high-fidelity, high-frequency real-time software.
• Self-motivated with ability to drive independent projects.

Responsibilities

• Co-design and implement networked digital twin software systems.
• Build telemetry, messaging, and networking layers.
• Develop simulation and system-control components.
• Implement distributed and real-time system components.
• Co-own technical architecture and platform direction.
• Rapidly prototype, iterate, and ship features.
• Write clean, production-oriented code.

Skills

C++ for simulators

Simulation software development

CI/CD pipelines

System architecture

Real-time software

Hardware-in-the-loop

Education

Bachelor's or Master's degree in Physics, CS, Software Engineering

Job description

ReOrbit in Helsinki is seeking a Senior Digital Twin Software Engineer to advance simulation and real-time control for UKKO, SILTA and future missions. You will co-design networked digital twin systems, build telemetry and messaging layers, and help shape architecture.

We value strong C++ expertise, experience with high-fidelity simulations, and hardware-in-the-loop integration. Join a fast-growing space-tech startup focused on secure, software-first satellite platforms.