Senior Software Engineer FDE Security Check Clearance

Salary: £70,000 - 100,000 per year

Requirements

• Bachelors Degree in Computer Science or a related technical field and technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python, or equivalent experience.
• Experience partnering directly with customers or internal stakeholders to deliver solutions end to end.
• Masters Degree in Computer Science or a related technical field and technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python, or equivalent experience is preferred.
• Experience designing, deploying, and operating AI or LLM-based solutions, including prompt engineering, retrieval-augmented approaches, model tuning, evaluation, data quality, performance monitoring, and use of cloud AI platforms.
• Familiarity with deploying and operating AI systems in production environments.
• Understanding of model evaluation, data quality, and performance monitoring.
• Experience using cloud AI platforms such as Azure ML, OpenAI, or similar.
• Comfort with travel up to 25%.
• Must have or be able to obtain Security Check (SC) clearance and meet Microsoft, customer, and/or government security screening requirements.

Responsibilities

• Design, build, test, and operate production-grade software and services that are secure, reliable, and scalable.
• Partner with customers and internal stakeholders to clarify requirements, define success metrics, and translate business needs into technical designs.
• Drive engineering best practices including code reviews, automated testing, CI/CD, observability, and documentation.
• Apply a security-first mindset and follow Microsoft security and compliance requirements throughout design and delivery.
• Deliver customer outcomes end to end by prototyping quickly, iterating with feedback, and landing solutions that meet quality, performance, and maintainability goals.
• Build reusable components, reference implementations, and patterns that can be shared across teams and engagements.
• Learn and adapt in a fast-moving environment, using experimentation and data to guide decisions and continuous improvement.
• Collaborate effectively across disciplines including engineering, data science, product, design, and security, and contribute to an inclusive, respectful team culture.
• Lead technical workstreams by aligning stakeholders, breaking down ambiguous problems, and driving execution through to delivery.
• Embody our culture and values.

Technologies

• AI
• Azure
• C#
• CI/CD
• Cloud
• Java
• JavaScript
• LLM
• Python
• Security
• LESS

More

We are Microsoft, and this role sits within our Forward Deployed Engineering team supporting UK Defense and Intelligence from our London, United Kingdom location with a fully remote work site. We deliver real outcomes for complex organizations by embedding directly with customer teams and shipping production-ready solutions quickly. This role offers the chance to work with leading global organizations, apply AI and software engineering at scale, and contribute to a culture built on growth mindset, respect, integrity, accountability, and inclusion. We offer a competitive package with a wide range of benefits, and this position is a Senior Software Engineer IC4 role with a typical base pay range of 74,700.00 to 122,600.00 per year across the United Kingdom.

last updated 34 week of 2026