System Test Engineer

stellar //; Bruges; Sur place; EUR 45 000 - 65 000; Plein temps

Avantages offerts par ce poste

Stock options

Competitive compensation

International team

Résumé du poste

Stellar seeks a System Test Engineer to join our QA team. You will design and execute test strategies across embedded hardware and software, validate GLOBBLE and STEER components, and collaborate with DevOps on releases.

Strong Python/Shell scripting and Linux networking knowledge are essential, with an emphasis on delivering robust test outcomes. Join an international, collaborative engineering team dedicated to high quality and continuous improvement, including field trials and performance

Qualifications

• 3+ years of hands-on software or systems testing.
• Strong Linux and networking knowledge (TCP/IP, VPN, logs) for debugging.
• Experience designing automated test suites in Python and Shell scripting.
• Ability to write clear bug reports with steps, root cause details, and logs.
• Familiar with CI/CD tools (Jira, GitLab CI).
• Experience writing formal test plans and customer-facing deliverables.
• Proficient English; French a plus.

Responsabilités

• Design and execute comprehensive test strategies to ensure quality and correct behavior of software and hardware modules.
• Test STEER EDGE and STEER Gateway software on GLOBBLE hardware platforms.
• Validate STEER Management releases at system level across dev, QA and production environments, with DevOps collaboration.
• Plan and execute field trials of GLOBBLE units across varied network conditions.
• Implement and maintain automated testing frameworks to streamline QA.
• Verify test environments meet resource/config specifications before validation campaigns.
• Structure and maintain automated test-reporting tooling and promote repeatable QA methodology.
• Identify, document, and track software defects with swift resolution with developers.
• Conduct full range of testing including field trials to validate stability and performance.
• Collaborate with cross-functional teams to uphold QA standards.
• Review requirements and design docs to ensure testability and quality.
• Produce formal test documentation and validation reports for internal or customer milestones.
• Drive continuous improvement of QA processes with Agile/DevOps.

Connaissances

Software testing

Linux

Python scripting

CI/CD

Bug reporting

Networking basics

Documentation

Outils

GitLab CI

Jira

Selenium

Robot Framework

Description du poste

About Stellar

Stellar brings together professionals and experts from a range of exciting domains and technologies: telecommunications (cellular 4G/5G terrestrial and non-terrestrial networks, Wi-Fi and satellites), mobility (trains, aircraft, drones and road vehicles), and software for efficient data transmission, orchestration, network management, data collection, processing and analysis, including growing AI/ML capabilities.

Our products and solutions - the STEER® Software Suite, M2M/IoT solutions and the all-in-one GLOBBLE® offering - are transforming how people and vehicles experience connectivity while on the move by enabling seamless, ubiquitous and reliable broadband services. More information is available at https://www.stellar.tc. Stellar is an ideal workplace for professionals who are eager to learn, challenge conventional approaches, explore practical innovations and take meaningful ownership in a supportive, collaborative, results-driven, international and professional environment.

Position Summary

Reporting to the Director of Software Development, the System Test Engineer focuses on Quality Assurance (QA) within the Stellar team, ensuring our software modules and architecture meet the highest standards of performance, quality, security, and reliability. Working closely with the STEER EDGE & Gateway, STEER Management, and DevOps stakeholders, you will carry out integration, system-level and performance testing across telecommunications and mobility use cases, spanning embedded devices, on-premises platforms and remote environments. Unit and functional testing is handled by the development teams; this role validates the complete, assembled system.

Key Responsibilities

• Design and execute comprehensive test strategies to ensure the quality and correct behaviour of software and hardware modules.
• Test STEER EDGE and STEER Gateway software on GLOBBLE® hardware platforms, including multipath networking, VPN, and firmware update scenarios.
• Validate STEER Management releases (Django/OpenWisp) at the system level across dev, QA, and production environments, in coordination with the DevOps and STEER Management teams.
• Plan and execute field trials of GLOBBLE® units across varied network conditions and deployment environments.
• Implement and maintain automated testing frameworks to streamline the QA process.
• Verify that test environments meet the resource and configuration specifications required for valid results before starting a validation campaign.
• Structure and maintain automated test-reporting tooling (e.g. the existing GitLab-based Python reporting scripts), and help other team members adopt a repeatable test methodology.
• Identify, document, and track software defects, collaborating with developers for swift resolution.
• Conduct a full range of testing, including field trials, to validate software stability and performance across real-world deployment conditions.
• Collaborate with cross-functional teams to define and uphold QA standards.
• Review and provide feedback on software requirements, design documents, operational procedures to ensure testability and quality.
• Produce formal test documentation and validation reports, either for internal purposes or to satisfy customers’ project milestones.
• Drive continuous improvement of QA processes, incorporating Agile and DevOps best practices.

Required Experience And Skills

• 3+ years of hands‑on experience in software or systems testing, ideally in embedded, networking, or telecommunications environments.
• Strong understanding of networking fundamentals (TCP/IP, VPN, routing, NFTables and similar tools) and Linux systems (ideally, Debian), including ability to analyze and interpret system/network logs (e.g., dmesg, journalctl, syslog, daemon/service logs, tcpdump traces) to isolate root causes and diagnose failure modes.
• Experience designing and maintaining automated test suites and frameworks, ideally in Python and Shell scripting. Comfortable working hands‑on with physical hardware for field trials and hardware‑in‑the‑loop testing.
• Proven ability to write clear, actionable bug reports with reliable, step‑by‑step reproduction steps, root‑cause details, logs, and system context.
• Familiarity with CI/CD tooling (e.g. Jira, GitLab CI).
• Experience writing formal test plans, results and documentation. This may include deliverables to customers.
• Rigorous, methodical approach to documentation and reporting.
• Professional proficiency in English (French a plus).

Preferred Experience

• Experience testing OpenWrt-based or embedded Linux devices.
• Hands‑on experience isolating network traffic or simulating multi‑node environments on single‑board targets using Linux network namespaces.
• Familiarity with Django/Python-based web platforms, Robot Framework and Selenium or similar browser‑automation tools
• Experience with multipath networking and VPN technologies.
• Experience in telecommunications, satellite, or mobility connectivity products.

What We Offer

• Strong ownership over the quality and reliability of Stellar's software and hardware stack.
• Hands‑on exposure to a wide range of technologies: embedded Linux, advanced networking, hardware integration, AI to support your activities, etc.
• Continuous learning in a supportive, expert‑driven engineering team.
• A collaborative, international and multicultural working environment.
• A competitive compensation package, including Stellar stock options.