Ada/SPARK Software Engineer Bath Circa 65,000 Hybrid Working (2-3 Days Onsite) Most software engineers spend their careers moving quickly. This role is for someone who understands that some software only gets one chance to be right. A specialist engineering organisation at the forefront of safety-critical software engineering is looking for an Ada/SPARK Software Engineer to join a team developing high-integrity software for some of the world's most demanding applications. Their work spans a broad range of industries, from satellites and sub-modular reactors to aerospace, automotive, medical devices and life sciences. Regardless of the application, the challenge remains the same: build software that performs exactly as intended, every time. You'll be involved throughout the software development lifecycle, contributing to requirements, design, development, integration, verification and validation activities alongside software, systems and test engineers. The environment is structured, technical and engineering-led. Quality, traceability and compliance are fundamental to success. What they're looking for Commercial experience developing software using Ada and SPARK . Strong understanding of the safety-critical software development lifecycle. Experience across requirements, development and/or test. Exposure to safety-critical or highly regulated environments. Knowledge of standards such as IEC 61508, EN 50128, ISO 26262, DEF STAN 00-55 or DO-178. A methodical approach to problem-solving and software quality. UK working rights and the ability to obtain BPSS security clearance. Why apply? For the right engineer, this is an opportunity to work on software where correctness, reliability and safety genuinely matter. You'll join experienced engineering teams solving technically challenging problems in an environment that values engineering rigour over shortcuts. Please note that visa sponsorship is not available for this position. Yoh Solutions Ltd , a Day & Zimmermann Company, are specialist recruiters supporting advanced engineering teams across embedded software, wireless communications and electronics.
Aug 22, 2026
Full time
Ada/SPARK Software Engineer Bath Circa 65,000 Hybrid Working (2-3 Days Onsite) Most software engineers spend their careers moving quickly. This role is for someone who understands that some software only gets one chance to be right. A specialist engineering organisation at the forefront of safety-critical software engineering is looking for an Ada/SPARK Software Engineer to join a team developing high-integrity software for some of the world's most demanding applications. Their work spans a broad range of industries, from satellites and sub-modular reactors to aerospace, automotive, medical devices and life sciences. Regardless of the application, the challenge remains the same: build software that performs exactly as intended, every time. You'll be involved throughout the software development lifecycle, contributing to requirements, design, development, integration, verification and validation activities alongside software, systems and test engineers. The environment is structured, technical and engineering-led. Quality, traceability and compliance are fundamental to success. What they're looking for Commercial experience developing software using Ada and SPARK . Strong understanding of the safety-critical software development lifecycle. Experience across requirements, development and/or test. Exposure to safety-critical or highly regulated environments. Knowledge of standards such as IEC 61508, EN 50128, ISO 26262, DEF STAN 00-55 or DO-178. A methodical approach to problem-solving and software quality. UK working rights and the ability to obtain BPSS security clearance. Why apply? For the right engineer, this is an opportunity to work on software where correctness, reliability and safety genuinely matter. You'll join experienced engineering teams solving technically challenging problems in an environment that values engineering rigour over shortcuts. Please note that visa sponsorship is not available for this position. Yoh Solutions Ltd , a Day & Zimmermann Company, are specialist recruiters supporting advanced engineering teams across embedded software, wireless communications and electronics.
Software Engineer (Rust) South West London Circa 65,000 Office Based Most software engineers spend their careers building features. This role is for someone who'd rather build confidence. A specialist engineering organisation at the forefront of safety-critical software engineering is looking for a Software Engineer with commercial Rust experience to join a team developing high-integrity software for some of the world's most demanding applications. Their work spans a broad range of industries, from satellites and sub-modular reactors to aerospace, automotive, medical devices and life sciences. Regardless of the application, the challenge remains the same: build software that performs exactly as intended, every time. You'll be involved throughout the software development lifecycle, contributing to requirements, development, integration, verification and validation activities alongside software, systems and test engineers. The environment is structured, technical and engineering-led. Quality, traceability and compliance are fundamental to success. What they're looking for Commercial experience developing software using Rust. Around five years' software engineering experience. Experience across requirements, development and/or test. Exposure to safety-critical or highly regulated environments. Knowledge of standards such as IEC 61508, EN 50128, ISO 26262, DEF STAN 00-55 or DO-178. A methodical approach to problem-solving and software quality. UK working rights and the ability to obtain BPSS security clearance. Why apply? For the right engineer, this is an opportunity to work on software where correctness, reliability and safety genuinely matter. You'll join experienced engineering teams solving technically challenging problems in an environment that values engineering rigour over shortcuts. Please note that visa sponsorship is not available for this position. Yoh Solutions Ltd , a Day & Zimmermann Company, are specialist recruiters supporting advanced engineering teams across embedded software, wireless communications and electronics.
Aug 22, 2026
Full time
Software Engineer (Rust) South West London Circa 65,000 Office Based Most software engineers spend their careers building features. This role is for someone who'd rather build confidence. A specialist engineering organisation at the forefront of safety-critical software engineering is looking for a Software Engineer with commercial Rust experience to join a team developing high-integrity software for some of the world's most demanding applications. Their work spans a broad range of industries, from satellites and sub-modular reactors to aerospace, automotive, medical devices and life sciences. Regardless of the application, the challenge remains the same: build software that performs exactly as intended, every time. You'll be involved throughout the software development lifecycle, contributing to requirements, development, integration, verification and validation activities alongside software, systems and test engineers. The environment is structured, technical and engineering-led. Quality, traceability and compliance are fundamental to success. What they're looking for Commercial experience developing software using Rust. Around five years' software engineering experience. Experience across requirements, development and/or test. Exposure to safety-critical or highly regulated environments. Knowledge of standards such as IEC 61508, EN 50128, ISO 26262, DEF STAN 00-55 or DO-178. A methodical approach to problem-solving and software quality. UK working rights and the ability to obtain BPSS security clearance. Why apply? For the right engineer, this is an opportunity to work on software where correctness, reliability and safety genuinely matter. You'll join experienced engineering teams solving technically challenging problems in an environment that values engineering rigour over shortcuts. Please note that visa sponsorship is not available for this position. Yoh Solutions Ltd , a Day & Zimmermann Company, are specialist recruiters supporting advanced engineering teams across embedded software, wireless communications and electronics.
Principal System Test Engineer Southampton Hybrid Working Competitive Salary + Bonus + Benefits Not all test roles are created equal. Some involve executing test plans that somebody else has written. This isn't one of them. We're working with a company developing advanced 5G and satellite communications technology. They're looking for a Principal System Test Engineer who can bridge the gap between specification, system architecture and real-world performance. You'll be the person asking: "How should this system behave?" not simply: "Did it pass the test?" Working closely with development, architecture and product teams, you'll define test strategies, develop automated test capability and help ensure complex wireless systems perform as expected in real-world environments. The Opportunity Define and implement system-level test strategies for advanced wireless communications products. Develop Python-based automated test frameworks and test capability. Work with RF equipment and wireless systems to investigate performance, diagnose issues and validate behaviour. Collaborate with engineers, architects and customers to translate requirements into meaningful test coverage. What We're Looking For Strong understanding of wireless communications systems, ideally within 4G, 5G, NTN or related technologies. Experience interpreting specifications and translating requirements into practical test methodologies. Python development skills and experience building automated test solutions. Confidence working with RF test equipment and analysing system performance. You'll Likely Enjoy This Role If You like understanding how systems work, not just whether they work. You enjoy solving technical problems using data, measurements and analysis. You're comfortable working across software, hardware and RF domains. You prefer being involved in defining the test approach rather than simply executing it. Experience with 3GPP technologies, RF system testing, satellite communications, CI/CD, hardware-in-the-loop environments or wireless infrastructure products would be advantageous. This role would suit someone who enjoys combining systems thinking, wireless communications and software engineering to solve difficult technical problems. About Yoh Yoh are a global talent and outsourcing specialist, partnering with businesses ranging from innovative start-ups through to some of the world's largest technology organisations.
Aug 22, 2026
Full time
Principal System Test Engineer Southampton Hybrid Working Competitive Salary + Bonus + Benefits Not all test roles are created equal. Some involve executing test plans that somebody else has written. This isn't one of them. We're working with a company developing advanced 5G and satellite communications technology. They're looking for a Principal System Test Engineer who can bridge the gap between specification, system architecture and real-world performance. You'll be the person asking: "How should this system behave?" not simply: "Did it pass the test?" Working closely with development, architecture and product teams, you'll define test strategies, develop automated test capability and help ensure complex wireless systems perform as expected in real-world environments. The Opportunity Define and implement system-level test strategies for advanced wireless communications products. Develop Python-based automated test frameworks and test capability. Work with RF equipment and wireless systems to investigate performance, diagnose issues and validate behaviour. Collaborate with engineers, architects and customers to translate requirements into meaningful test coverage. What We're Looking For Strong understanding of wireless communications systems, ideally within 4G, 5G, NTN or related technologies. Experience interpreting specifications and translating requirements into practical test methodologies. Python development skills and experience building automated test solutions. Confidence working with RF test equipment and analysing system performance. You'll Likely Enjoy This Role If You like understanding how systems work, not just whether they work. You enjoy solving technical problems using data, measurements and analysis. You're comfortable working across software, hardware and RF domains. You prefer being involved in defining the test approach rather than simply executing it. Experience with 3GPP technologies, RF system testing, satellite communications, CI/CD, hardware-in-the-loop environments or wireless infrastructure products would be advantageous. This role would suit someone who enjoys combining systems thinking, wireless communications and software engineering to solve difficult technical problems. About Yoh Yoh are a global talent and outsourcing specialist, partnering with businesses ranging from innovative start-ups through to some of the world's largest technology organisations.
