JAB Recruitment
Senior Software Engineer
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Senior Software Engineer
Senior Software Engineer – Permanent (3 Days On-Site in Oxford)
CRITICAL NOTES:
- Full-time (3 days/week) at our Oxford head office
- Mandatory Right-to-Work checks due to security clearance requirements
We are seeking a senior software engineer specialising in high-performance desktop and cloud applications, to lead technical direction while solving complex problems, shaping modern systems, and modernising legacy codebases. Reporting to the Team Lead, you will work closely with the Product Owner—writing daily code, participating in PR reviews, and driving sound architectural decisions underpinned by modern software engineering principles.
Key Responsibilities
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Software Design & Development
- Architect, implement, and maintain complex desktop/cloud applications using design patterns, SOLID principles, automated testing, and CI/CD.
- Lead migration from mature C/C++ codebases into modern languages, runtimes, and UI/UX frameworks—without sacrificing scientific accuracy or performance.
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AI-Assisted Modernization
- Proactively leverage AI-powered tools (e.g., Copilot, Git representational state transfer, and automated testing assistants) to improve delivery cycles and code quality.
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leadership & Collaboration
- Partner with Team Lead & Product Owner to translate requirements into scalable, maintainable solutions—empowering the team to iterate effectively.
- Mentor junior/mid-senior developers through code reviews, pair programming, and technical knowledge-sharing, while fostering a culture of engineering excellence.
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Communication & Risk
- Clearly articulate risks, trade-offs, and progress to technical and non-technical stakeholders while ensuring timelines and quality standards are met.
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Continuous Innovation
- Stay ahead of emerging technologies, testing and adopting language frameworks, cloud services, and AI/ML tools relevant to the product.
Required Qualifications
✅ 5+ years professional experience in building and shipping complex production applications (not just scripting or prototyping). ✅ Strong expertise in C#/.NET and C/C++, with a track record of working natively across both ecosystems within a single product environment.
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✅ Undergraduate degree (or higher) in Computer Science, Software Engineering, or related engineering discipline.
✅ Operational comfort with AI-assisted development — comfortable experimenting and integrating AI tools into daily deliverables. ✅ Hands-on experience with cloud architectures (AWS/Azure/Google Cloud).
✅ Core Software Engineering Fundamentals:
- OO & component-based design
- Design patterns
- Unit/integration testing
- Version control (Git) & PR workflows
- CI/CD systems (building, pipeline configuring, or maintaining automated deployment workflows)
✅ Experience modernising legacy systems including language/framework migrations and UI/UX improvements. ✅ A highly collaborative yet self-motivated individual who drives solutions without micromanagement—excelling in problem-solving, communication and independent initiative.
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