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Spacecraft Systems Test Engineer

SWISSto12 Renens, Vaud, Switzerland

onsitefull-time
Posted Feb 25, 2026Apply by Mar 27, 2026

Role & seniority: Spacecraft Systems Engineer (experienced), lead/independent contributor for HummingSat GEO product line; senior level with technical leadership responsibilities.

Stack/tools: Systems engineering discipline (architecture, requirements definition, flow-down, test planning); interface management across subsystems; test philosophy, requirements documents, test procedures/scripts; MBSE/requirements tracing; documentation and cross-cultural collaboration.

Top 3 responsibilities

  • Perform system engineering across the satellite lifecycle (proposal, design, integration, test, operations).

  • Define system test philosophy and architecture to verify/validate requirements; lead creation and management of the test requirements document.

  • Lead systems/subsystems engineers in detailing test requirements and designing/authoring test procedures; support broader systems engineering activities.

Must-have skills

  • 7+ years of relevant SATCOM/satellite systems experience; Bachelor’s or Master’s in Aerospace, Electrical, Mechanical, Systems Engineering, Physics, or equivalent.

  • Deep knowledge of system architecture, requirements flow-down, interfaces, and lifecycle processes (design, manufacture, integration, test, operation).

  • Proven problem-solving, ability to work self-initiated and in a team, strong technical writing and communication; fluent English; ability to work across cultures.

Nice-to-haves

  • Advanced familiarity with electrical or mechani

Full Description

SWISSto12 is one of the world’s fastest-growing aerospace companies, evolving from its pioneering use of 3D printing technologies for high-performance Radio Frequency (RF) products and applications to manufacturing entire geostationary telecommunication satellites, called HummingSat, that define a new category in space and of which 4 have already been sold to international leading telecom operators: Intelsat and ViaSat (acqu. Inmarsat).

HummingSat is the world’s first commercial telecom GEO SmallSat developed in collaboration with the European Space Agency (ESA). Its uniquely compact size combined with highly capable telecom payloads allows telecommunications operators to deploy a cost-efficient, compact and agile asset without sacrificing performance or security.

SWISSto12 is also a leading provider of Radio-Frequency (RF) products and sub-systems. The company’s patented 3D printing technologies and associated product designs are unique to deliver lightweight, compact, highly performing, and competitive RF products. This position is a unique opportunity to lead the development of a new class of telecommunication satellites.

We are looking for an experienced Spacecraft Systems Engineer to join team for our HummingSat GEO satellite product line. If you are looking for position where you can play an active role in contributing to innovative and growing company, this role is for you.

Job Requirements

Demonstrate technical expertise and application of engineering principles, concepts, theory, and practice, as well as technical leadership skills Real-world experience with system architecture, requirements definition, flow down, tracking and performing system-level analyses in support of trade studies Advanced knowledge of one or two spacecraft subsystems and intermediate knowledge of several other subsystems with an ability to draw parallels and manage interfaces between them Understanding of principles for spacecraft design, manufacture, assembly, integration, test, and operation Proven ability to resolve complex technical problems and complex management of technical activities Able to work on a self-initiated basis, while being part of a team Proven ability to “think outside of the box” and thrive in an often-ambiguous trade-space Demonstrated ability to write clear technical documentation of high quality Excellent written and verbal communication skills and ease at working across different cultures and different levels of an organization Bachelors or Masters degree in Aerospace, Electrical, Mechanical, Systems Engineering, Physics, or equivalent and at least 7 years of relevant experience working with incrementally complex satellite systems

Language: Fluent English is a prerequisite

Job Responsibilities

As a spacecraft systems test engineer, you will be specifically responsible for the following functions

Perform systems engineering tasks through the entire lifetime of a satellite including proposal, design, integration, test, and operations Define a system test philosophy consistent with contract requirements and industry standards to ensure the system is verified and validated across different levels of assembly Develop an architecture for managing test requirements and how they flow down from performance requirements to deliver a test requirements document Lead systems and subsystems engineers in populating the details of the test requirements document Lead test design efforts to develop test procedures and scripts This position requires experience with spacecraft assembly, integration, and testing with expertise in electrical or mechanical operations, experience with both is a plus Support other systems engineering activities based on program needs Occasionally, you will be asked to participate in overall tasks and services inherent to a dynamic fast-growing company

Job Benefits To be chatted during your exchange with our recruitment team.

More about SWISSto12

  • SWISSto12 has successfully established contracts with ViaSat (acqu. Inmarsat), Intelsat and ESA for HummingSat as well as contracts for its RF product line in Europe and the USA with prominent partners and customers such as Thales, Lockheed Martin, Northrop Grumman and ESA. SWISSto12 is a spin off from the Swiss Federal Institute of Technology in Lausanne (EPFL), is privately owned and backed by prominent Swiss and European Investors. SWISSto12 is headquartered in Renens (close to Lausanne, Switzerland), and operates subsidiaries in Foster City California USA, Virginia USA, and Madrid Spain. The company is well funded for its developments and backed by a solid customer revenue stream with near term profitability.
Systems EngineeringSystem ArchitectureRequirements DefinitionSystem-Level AnalysesSpacecraft DesignAssemblyIntegrationTestOperationProblem ResolutionTechnical DocumentationCommunicationRF ProductsGEO SmallSatTest PhilosophyTest Proceduresmulti-locationreview:company

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