At a Glance
- Tasks: Design and develop secure full stack applications using Java, Spring Boot, React, and TypeScript.
- Company: Join a leading tech team delivering modern digital capabilities in Defence.
- Benefits: Competitive pay of £500-£540 per day, with opportunities for professional growth.
- Other info: Work onsite in London four days a week, with a focus on secure software development.
- Why this job: Make a real impact in Defence while working with cutting-edge technologies.
- Qualifications: Proven full stack development experience and strong skills in Java, Spring Boot, and React.
The predicted salary is between 63000 - 77000 £ per year.
Requirements
- Proven full stack development experience within MOD, Defence, National Security or similarly secure environments.
- Strong Java development experience.
- Strong Spring Boot experience.
- Strong React and Type Script development experience.
- Experience designing and developing RESTful APIs.
- Experience with SQL and/or No SQL databases.
- Experience building responsive, accessible and maintainable user interfaces.
- Experience with Git and modern software development practices.
- Experience with Docker, Kubernetes or other container technologies.
- Familiarity with CI/CD pipelines and Dev Sec Ops practices.
- Experience working within agile, multidisciplinary delivery teams.
- Strong understanding of secure software development and scalable application architecture.
- Current DV Security Clearance.
- Ability to work onsite at an MOD location in London four days per week.
- Previous experience delivering within MOD, Defence, Defence Intelligence, Strategic Command or wider National Security organisations.
- Comfortable working with OFFICIAL-SENSITIVE and classified material where authorised.
Responsibilities
- Design, develop and maintain secure full stack applications using Java, Spring Boot, React and Type Script.
- Develop scalable backend services and secure RESTful APIs.
- Build intuitive, accessible and responsive frontend applications.
- Develop reusable frontend components aligned with established design system principles.
- Integrate frontend applications with backend APIs, workflow services and identity/access mechanisms.
- Design and implement data persistence using SQL and No SQL technologies.
- Develop integrations with enterprise data sources and existing Defence systems.
- Contribute to cloud-native deployment, containerisation and CI/CD pipelines.
- Implement secure coding practices, logging, monitoring and audit capabilities.
- Write automated tests across frontend and backend components.
- Participate in technical design workshops, code reviews and agile ceremonies.
- Work closely with UX Designers, Product, Engineering and Defence stakeholders.
- Support continuous improvement of application performance, usability, reliability and security.
- Technologies
- Backend
- CI/CD
- Cloud
- Dev Sec Ops
- Docker
- Frontend
- Git
- Support
- Java
- Kubernetes
- No SQL
- React
- SQL
- Security
- Spring
- Spring Boot
- Type Script
- UX UI Design
- AWS
- Open Search
- BPMN
- Camunda
- Elastic Search
- Figma
- Istio
- Mongo DB
- Fullstack
- More
We are delivering secure, modern digital capabilities within a Defence environment.
Our programme is building a next-generation Defence Intelligence capability designed to improve visibility of operational information, streamline workflows, reduce administrative burden and support faster, more informed decision-making.
You will work on a secure, cloud-native development environment using modern frontend technologies, secure backend services and integration with existing Defence systems.
This role is based in London at an MOD site, with four days per week onsite, and is offered outside IR35 at £500-£540 per day.
- last updated 36 week of 2026
- #J-18808-Ljbffr
Full Stack Developer in City of Westminster employer: CBSbutler Holdings Limited trading as CBSbutler
As a Compliance Team Leader in Newcastle, you will join a dynamic and supportive work environment that prioritises employee development and teamwork. The company fosters a culture of collaboration and inclusivity, offering opportunities for personal growth and career advancement while ensuring a customer-oriented approach. With competitive pay and the potential for a permanent position, this role is perfect for those looking to make a meaningful impact in the financial services sector.
Contact Details:
CBSbutler Holdings Limited trading as CBSbutler Recruitment Team
StudySmarter Expert Advice🤫
We think this is how you could land Full Stack Developer in City of Westminster
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at CBSbutler Holdings Limited trading as CBSbutler or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to CBSbutler Holdings Limited trading as CBSbutler.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like CBSbutler Holdings Limited trading as CBSbutler.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like CBSbutler Holdings Limited trading as CBSbutler that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Full Stack Developer in City of Westminster
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at CBSbutler Holdings Limited trading as CBSbutler.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at CBSbutler Holdings Limited trading as CBSbutler and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at CBSbutler Holdings Limited trading as CBSbutler
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If CBSbutler Holdings Limited trading as CBSbutler uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
