Software Engineer

Yoh, A Day & Zimmermann Company; Bath; On-site; GBP 55,000 - 75,000; Full time

Job summary

Yoh is seeking a Software Engineer with commercial ADA and SPARK experience to join a team delivering high-integrity software. You will contribute across requirements, development, integration, verification and validation within safety-critical, highly regulated industries.

Ideally you have worked in defence, aerospace, transport, rail or automotive settings with traceability to recognised safety standards and able to gain BPSS clearance. Visa sponsorship is not available.

Qualifications

• 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.

Responsibilities

• Involved throughout the software lifecycle, contributing to requirements, development, integration, verification and validation activities.
• Work with experienced software, systems and test engineers to deliver safe software solutions.
• Operate within defence, aerospace, transport, rail or automotive environments that follow recognised safety and engineering standards.

Skills

Ada

SPARK

Safety standards knowledge

Job description

Most software engineers spend their careers trying to move faster.

This role is for someone who understands when slowing down matters.

A specialist engineering organisation developing safety-critical systems is looking for a Software Engineer with commercial ADA and SPARK experience to join a team working on high-integrity software within highly regulated industries.

The environment is structured, technical and engineering-led. Every requirement, every line of code and every test has a purpose. The focus is on producing software that is predictable, reliable and demonstrably safe.

You’ll be involved throughout the software lifecycle, contributing to requirements, development, integration, verification and validation activities while working alongside experienced software, systems and test engineers.

The role would suit someone who has experience working within defence, aerospace, transport, rail or automotive environments, where software is developed against recognised safety and engineering standards.

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 gain BPSS security clearance.

Why apply?

For the right engineer, this is an opportunity to work on software where traceability, reliability and correctness are fundamental to success. You’ll be surrounded by experienced engineers, solving technically challenging problems in an environment that values engineering rigour, quality and long‑term thinking.

Please note that visa sponsorship is not available for this position.