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CACI Ltd

Senior Full Stack Developer

London
Posted about 17 hours ago
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Job Role: Senior Full Stack Developer

Job Type: Permanent

Base Office: London

Working Structure: Hybrid

About Us

We are a growing digital team working with a wide range of clients to build, scale, and maintain robust, high-quality web applications.

Our culture is collaborative, innovative, and focused on delivering solutions that make a real impact. We work together to solve complex technical challenges, continuously improve how we work, and build software that we can be proud of.

We are looking for a Senior Full Stack Developer to join our team and play a key role in designing, delivering, and maintaining modern, scalable, and maintainable web applications for a range of clients.

What You’ll Be Doing

In this role, you will:

  • Take a leading role in the design, development, and delivery of high-quality web applications for a range of clients.
  • Work closely with developers, testers, designers, project managers, and client stakeholders to deliver robust and effective technical solutions.
  • Provide technical leadership within project teams, helping to make sound technical decisions and ensuring solutions are scalable, secure, and maintainable.
  • Write clean, well-structured, and maintainable code, setting a strong example for development best practices and coding standards.
  • Contribute to application architecture and technical design, working with the wider team to make appropriate technology and implementation decisions.
  • Lead and contribute to code reviews, helping to maintain quality and supporting the development of other team members.
  • Mentor and support less experienced developers, helping them develop their technical skills, confidence, and problem-solving abilities.
  • Advocate for automated testing and work closely with QA and developers to improve and extend automated test coverage.
  • Investigate complex technical issues and take ownership of identifying and delivering effective solutions.
  • Provide technical input into project planning, including estimations, identifying risks and dependencies, and breaking down complex work into clear, actionable tasks.
  • Participate in client meetings, clearly communicating technical approaches, progress, risks, and potential blockers.
  • Help establish and continuously improve development standards, processes, and best practices across the team.
  • Use AI-assisted development tools to improve productivity and support activities such as coding, debugging, testing, documentation, and technical research.
  • Help establish good practices for the responsible use of AI-assisted development, ensuring AI-generated outputs are understood, reviewed, tested, and meet appropriate standards for security, quality, and maintainability.
  • Stay up to date with emerging technologies and approaches, including developments in AI-assisted software engineering, and identify opportunities where they could provide value.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

Start with a chat, not a search bar

Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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It searches the market for you

Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.

Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

See breakdown
Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

Only hits

No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

What We’re Looking For

Required Skills & Experience:

  • Take a leading role in the design, development, and delivery of high-quality web applications for a range of clients.
  • Work closely with developers, testers, designers, project managers, and client stakeholders to deliver robust and effective technical solutions.
  • Provide technical leadership within project teams, helping to make sound technical decisions and ensuring solutions are scalable, secure, and maintainable.
  • Write clean, well-structured, and maintainable code, setting a strong example for development best practices and coding standards.
  • Contribute to application architecture and technical design, working with the wider team to make appropriate technology and implementation decisions.
  • Lead and contribute to code reviews, helping to maintain quality and supporting the development of other team members.
  • Mentor and support less experienced developers, helping them develop their technical skills, confidence, and problem-solving abilities.
  • Advocate for automated testing and work closely with QA and developers to improve and extend automated test coverage.
  • Investigate complex technical issues and take ownership of identifying and delivering effective solutions.
  • Provide technical input into project planning, including estimations, identifying risks and dependencies, and breaking down complex work into clear, actionable tasks.
  • Participate in client meetings, clearly communicating technical approaches, progress, risks, and potential blockers.
  • Help establish and continuously improve development standards, processes, and best practices across the team.
  • Use AI-assisted development tools to improve productivity and support activities such as coding, debugging, testing, documentation, and technical research.
  • Help establish good practices for the responsible use of AI-assisted development, ensuring AI-generated outputs are understood, reviewed, tested, and meet appropriate standards for security, quality, and maintainability.
  • Stay up to date with emerging technologies and approaches, including developments in AI-assisted software engineering, and identify opportunities where they could provide value.

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Nice to Have:

  • Strong experience with Docker and containerised development environments.
  • Experience designing and working with cloud infrastructure on platforms such as AWS, Azure, or similar.
  • Experience designing and developing RESTful APIs and integrating with third-party services.
  • Experience with application performance optimisation, including database optimisation, caching, and improving application performance.
  • Experience contributing to or defining application architecture and technical standards.
  • Experience implementing or improving automated testing strategies.
  • Experience evaluating and introducing developer tools, including AI-assisted development tools, into engineering teams.
  • Experience with React Native or other mobile application development frameworks.

Equal Opportunities

CACI is proud to be an equal opportunities employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favourably due to ethnic origin, age, sex, gender identity, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent discrimination.

As a Disability Confident employer, we will;

  • Provide reasonable adjustments in the recruitment process where requested (contact a member of the recruitment team on 020 7602 6000 to discuss individual requirements further).
  • Offer people with health conditions and disabilities, meeting the minimum criteria for a role, an interview.

Our people are unique, and we encourage, and support them, to be confident in contributing to our inclusion journey.

Trusted by 25,000+ job seekers

“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”

Jessica, London

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Skills

Full Stack Development
Web Application Design
Technical Leadership
Code Reviews
Mentoring
Automated Testing
AI-assisted Development
Docker
Cloud Infrastructure
AWS
Azure
RESTful APIs
Application Performance Optimization
Database Optimization
React Native

Location

London, England, United Kingdom

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