Cirrus Selection

Senior Software Engineer (Ada, Simulation / C2 Systems) Based onsite in Stevenage Salary up to £64,000 + Bonus Overtime Pension This isn't a feature factory role. You'll be working on simulation software that underpins command-and-control systems, where stability, determinism, and performance actually matter. A big part of the job is understanding why things break, not just fixing symptoms. You'll be digging into legacy code, unpicking technical debt, and making changes that stick. Expect to spend time on: Root cause analysis of complex system behaviour Improving reliability and determinism in simulation environments Refactoring legacy Ada code where needed, without breaking everything around it Supporting and improving CI/CD pipelines and automated test coverage Getting a deep understanding of system architecture, not just your component Tech-wise, this is a fairly specific stack: Ada is core; you'll need to be comfortable working with it day to day CI/CD pipelines and automated testing are part of the workflow Agile environment, but this isn't Jira ticket churn, it's problem solving This will suit someone who: Enjoys debugging systems at a deeper level Is comfortable working in existing, complex codebases Cares about software quality, not just delivery speed Wants to understand how the whole system behaves, not just their bit Package includes: Salary up to £64,000 Bonus Pension up to 14% Paid overtime Up to 15 days flexi leave Excellent on site facilities You'll need to be eligible for UK security clearance (British citizen or dual national with British citizenship). If you're the kind of engineer who gets pulled into the "hard problems" when no one else can fix them, you'll probably enjoy this.

Location Bristol (UK-based with international travel opportunities) Term Permanent (37 hours per week) Package Up to £50,000 p/a Overtime Flexi Bonus Pension Want to work on cutting-edge defence systems and see your work tested in real-world scenarios? This is your chance to join a growing Integration & Systems Validation team supporting a major international programme. This is a hands on, high impact role combining system integration, trials, and validation activities across complex systems. You will be working directly with real equipment, delivering trials and demonstrations across the UK, Poland and the USA. Expect variety, responsibility and the chance to work closely with customers and stakeholders at every level. What You'll Be Doing Planning and delivering integration & system validation trials Supporting lab, system of systems, acceptance and live firing trials Investigating faults and driving resolution of complex issues Analysing system behaviour across multiple interfaces Collaborating with engineering teams, partners and customers Ensuring safe, controlled and successful trial delivery Why This Role Stands Out If you're looking for a role where you can get hands on with advanced systems, travel internationally, and play a key part in delivering mission critical capability, this is it. What We're Looking For Strong experience in systems integration, V&V or trials Confident communicator across technical and non technical teams Experience working across multi site, multi discipline environments Knowledge of requirements, configuration & defect management Desirable: Networking / protocols / Wireshark DOORS or similar requirements tools Fault finding at subsystem level Customer facing experience What's in It for You Bonus up to £2,500, Pension up to 14% total contribution, Flexible & hybrid working, Up to 15 additional flexi leave days, Paid overtime opportunities, Enhanced parental leave (up to 26 weeks), Healthcare cash plan, Excellent on site facilities (including subsidised meals & free parking) Apply now through Cirrus Selection and take your next step into a high impact role working on products and systems that really matter, and play a key part in keeping the UK safe, and critical to national security, you know what to do. You will need to be a British citizen, and eligible for UK security clearance. Cirrus Selection Specialist recruiters to the engineering and technology sectors, offers the services of an Employment Agency for permanent recruitment and the services of an Employment Business for contract recruitment.

A technology solutions company in Stevenage is seeking a Senior Software Engineer with expertise in Ada and a passion for tackling complex problems. You will focus on simulation software for command-and-control systems, engaging in tasks such as root-cause analysis, refactoring legacy code, and enhancing CI/CD pipelines. The package includes a salary up to £64,000, bonus, pension, and flexible leave. Applicants should be eligible for UK security clearance.

A specialist recruiter is seeking a qualified professional for a permanent role in Bristol, UK. This position involves working on cutting-edge defense systems with responsibilities in systems integration, trials, and validation. Candidates should have strong experience in system integration and excellent communication skills. Benefits include a competitive salary, bonus opportunities, flexible working arrangements, and additional leave days. British citizenship and eligibility for UK security clearance are required.

Location: Stevenage, Bristol or Bolton Salary: Up to £60,000 P/A + benefits (plus Overtime, Flexi and Bonus) Hours: 37 hours per week Do you want to join a business, who value inclusivity, a three time gold investor in people award winner, an advocate of supporting women in engineering and developing their people to be the best they can be? An exciting opportunity has arisen to join a Security Engineering team, as a Project Security Manager and be responsible for all aspects of Project Security on a specific Programme and help to shape the future of this type of role as a distinct domain within the Security Engineering Department. Due to growth within the current model, there is now a need to recruit a Project Security Manager to own and manage the activities, act as a centralised point of contact, harmonise practice across Design Projects and provide coherency and consistency in the domain. Initially there will be a single role deployed onto a specific Product Line; however, the longer term strategy is to develop a small departmental team formed from a number of these roles working together. Responsibilities include (More information available). Owner of the Project Security Grading Guide(s) Project Release Approvals Manager Support to export approval paperwork Project Security Equipment Management Formally act as the Project Security Representative as defined by Company Process Cross project Responsibilities Benefits of working here: State of the art technology & innovation External learning and development encouraged Light and airy university type campus Friendly environment Restaurant, On site Medical Centre, Parking / Easy Access to train station, Coffee Shops & Onsite Shop, Sports & Social Club and More Skills Required: Able to listen to, evaluate and resolve technical and process driven issues in a manner that upholds the business reputation with the Customer Highly organised and able to distil complicated information or processes into coherent, manageable steps Strong people and engineering skills where a background in Systems Engineering is useful Knowledge of Product or Systems Security is desirable, but not essential You will need to obtain UK Security Clearance for this role. This will require you to be a full UK Citizen only. Some restrictions may apply.