Test Engineer - Cyber Security

hackajob is collaborating with CoreTech Security to connect them with exceptional professionals for this role.

Our Capability Development team develops bespoke software for our clients in the Cyber Security domain. We may be building assured software that prioritises engineering rigour and reliability, rapid cyber solutions that stitch together tooling for high-impact results, or blended operational systems that address real-world challenges in the field. Common to all is commitment to technically led decisions, to meaningful technical challenge, and to engaging career paths where your work makes it off the shelf and into the hands of our customers. All of our roles demand strong technical expertise, meticulous attention to detail, and a commitment to delivering robust, dependable solutions that our clients can rely on when it matters most.

To support this mission, we are seeking a Test Engineer dedicated to ensuring that every solution we deliver is robust, dependable, and meets the highest standards of quality. You will play a critical role in our commitment to delivering reliable software that our clients can trust in high-stakes environments.

We are ideally looking for a candidate who holds an active Security Clearance to join our team.

What You'll Do

• Developing and implementing comprehensive test strategies and plans for both new "clean-slate" products and existing core components.
• Collaborating deeply with Software Engineers throughout the entire development lifecycle, from initial requirements capture to final deployment.
• Designing, building, and maintaining automated testing frameworks to increase delivery velocity while ensuring system correctness.
• Performing rigorous manual and automated testing (including unit, integration, and system-level tests) to validate technical approaches.
• Identifying, documenting, and tracking defects, working closely with the engineering team to drive rapid resolution and prevent regressions.
• Helping to evolve our engineering processes by integrating quality assurance checkpoints into our continuous integration pipelines.
  
  

You will play a key role in ensuring the long-term sustainability of our solutions by championing high standards for technical documentation and architectural clarity. You will work to bridge the gap between complex operational needs and precise engineering specifications, ensuring that even our most rapid cyber solutions are built on a foundation of clear design that supports continuous improvement and seamless client handovers.

Desirable Skills

• Strong command of common testing methodologies (e.g., Black-box, White-box, Regression, and Exploratory testing).
• Proven experience with automated testing tools and frameworks relevant to modern operating systems, such as Android or iOS.
• Experience working within a CI/CD environment and an understanding of how to integrate automated quality gates into the build process.
• A "shift-left" mindset, with a demonstrated ability to engage in design reviews and requirement analysis to catch issues early.
• Familiarity with security-focused testing practices or vulnerability assessment.
• Strong analytical skills and a meticulous attention to detail.
  
  

This vacancy is for experienced test engineers and will require skills and experience in several of the areas listed.

Work Benefits

• Promotions are based on technical excellence and reviewed regularly.

Discover our full range of relocation jobs with comprehensive support packages to help you relocate and settle in your new location.

• 25 days holiday per year (with bank holidays on top), option to buy up to 5 days per year.
• Level up with an extra day of holiday per year, up to an extra 5 days, starting from 2 years' service.
• We offer financial support to cover HMRC allowable costs of relocating if you’re moving to the area.
• Training and development opportunities to support your career aspirations
• O'Reilly books subscription which provides access to huge range of technical books
• Regular events including internal technical conferences, company socials and pizza-fuelled lunchtime seminars.
• Free seasonal fruit, tea, coffee, milk, squash and hot chocolate.
  
  

Health Benefits - Private medical including access to

• Private online GP, and a helpline to speak with various healthcare professionals.
• Physiotherapists, osteopaths or chiropractors for muscle, bone, and joint pain.

Interested in relocating to United Kingdom? Check out our comprehensive Relocation Jobs in United Kingdom page with detailed relocation packages and benefits.

• Mental health - counselling, and specialist consultations and treatment with psychologists and cognitive behavioural therapists.  
• Annual Health assessment.
  
  

Financial Benefits

• A company bonus scheme so that everybody is rewarded for company success. This is an annual award that is based on the company hitting its targeted forecast. We have achieved this every year to date.
• 8% company contribution to pension with no minimum requirement for employee contribution.
• Death in Service cover of 4x base salary.  
  
  

Lifestyle Benefits

• Enhanced maternity/paternity/adoption leave: 12 weeks maternity leave at full pay as soon as you join, further enhanced to 20 weeks full pay from 2 years’ service. 2 weeks paternity leave at full pay as soon as you join, further enhanced to 4 weeks full pay from 2 years’ service.
• Enhanced cycle-to-work scheme including the ability to purchase a bike over £1,000 (e-bikes, specialist cycles and trikes allowed).