Senior Full Stack Engineer

We are seeking a Senior Full Stack Engineer who is passionate about building high quality software and designing robust systems. You will work on complex, large scale solutions across multiple technology stacks, collaborating closely with clients and internal stakeholders. While you will help guide other engineers, this role is engineering led rather than people management focused.

About Our Team

Our Full stack engineering team brings together experienced engineers, diverse perspectives, and a flat team structure that enables visibility and impact from day one. With 40-50 professionals across the practice, we deliver some of the most exciting projects in the market - from next generation fintech payment platforms to global insurance systems deployed across multiple countries.

AI is an important part of our work, but this role is grounded in strong software engineering fundamentals. We are looking for senior engineers who enjoy architecture, system design, and end to end delivery, with a genuine interest in modern technologies, including AI.

The role requires Security Clearance or ability to get SC in short timescales.

Technology

This is a true full stack role, offering exposure to a broad range of technologies and architectures. You will continuously upskill while working alongside highly talented engineers, selecting the most appropriate tools and languages for each challenge.

Contribute to diverse and meaningful projects

From automating government client systems and delivering large scale platform migrations, to applying AI to enhance our products - including next generation fintech payment platforms and global insurance systems deployed across multiple countries.

Culture

Our culture is built by people who genuinely love technology. We value curiosity, collaboration, and continuous learning, and we actively support innovation and knowledge sharing.

As a Senior Full Stack Engineer, You Will

• Design, build, and deploy scalable, high quality systems
• Translate business and client requirements into technical solutions
• Work directly with clients, moving quickly from concept to production
• Lead by example through hands on development
• Contribute to architectural decisions across multiple teams
• Support and mentor engineers while remaining deeply involved in delivery

What You Bring

• A proven track record in full stack development
• Experience designing systems and solutions independently
• Experience providing technical leadership while staying actively involved in hands on development is highly valued.

Experience Required

• Solid understanding of maintainable code, systems design and software architecture
• Experience working across multiple technology stacks
• Strong experience with library appropriate, strongly typed languages such as C++, Java, C#, Go or Rust, along with relevant front end frameworks
• High adaptability and the ability to learn new technologies quickly
• Interest in modern technologies such as new languages, AI, cloud platforms
• Strong communication skills and confidence working with clients and distributed teams

Your Benefits, Your Way

• 25 days annual leave, with the option to purchase additional days
• Private Healthcare
• Life Assurance
• Income Protection
• Pension contribution matched up to 10%
• Flexible benefits, allowing you to tailor your package around wellbeing, family support, and more

Diversity, Equity & Inclusion

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all. As a Disability Confident employer, we encourage applications from all applicants, especially, differently abled applicants. We aim to ensure that those who meet the minimum criteria for this position will be offered an interview. We are committed and willing to making reasonable adjustments to the application and assessment process to accommodate your needs.

We are also a care leaver friendly employer. If you require additional support with your application, please contact our recruiter or send an email to our dedicated mailbox UK-Recruitment .