At a Glance
- Tasks: Design and develop secure Java-based backend services for mission-critical systems.
- Company: Specialist UK consultancy focused on national security and intelligence.
- Benefits: Competitive salary, benefits, and long-term career development opportunities.
- Other info: Collaborative teams in a mission-focused environment with a commitment to diversity.
- Why this job: Make a real-world impact while tackling complex backend engineering challenges.
- Qualifications: Strong Java experience, knowledge of microservices, and active DV security clearance.
The predicted salary is between 63000 - 77000 £ per year.
A specialist UK consultancy working at the heart of national security and intelligence programmes is seeking a Java Developer to build secure, high-performance backend systems. This role focuses on delivering mission-critical applications that support advanced data, analytics, and operational platforms in highly secure environments.
Role Overview
- Location: Gloucester, London or Manchester (up to 80% onsite)
- Package: Competitive salary + benefits
- Industry: National Security / Software Engineering
What You’ll Be Doing:
- Designing and developing secure Java-based backend services for mission-critical systems
- Building scalable microservices and RESTful APIs to support intelligence and data platforms
- Developing high-performance distributed applications capable of handling large, complex datasets
- Integrating backend systems with streaming, analytics, and AI/ML-enabled platforms
- Applying secure coding principles to meet strict performance, resilience, and security standards
- Contributing to architectural decisions, code reviews, and continuous improvement initiatives
- Implementing observability, logging, and monitoring to support production environments
- Collaborating with stakeholders to translate requirements into robust technical solutions
Main Skills Needed:
- Strong commercial experience with Java (11+) and frameworks such as Spring Boot
- Solid understanding of object-oriented programming and backend system design
- Experience building microservices and RESTful APIs in distributed environments
- Background in scalable, high-performance systems, ideally in data-intensive domains
- Familiarity with DevSecOps practices including Docker, Kubernetes, CI/CD pipelines and automated testing
- Understanding of system observability and production support tooling
- Ability to work closely with stakeholders to define and deliver technical solutions
- Active DV security clearance (essential)
What’s in It for You:
- Work on highly secure, nationally significant systems with real-world impact
- Exposure to complex, large-scale backend engineering challenges
- Opportunity to work with modern architectures including microservices and cloud-native tooling
- Strong emphasis on engineering quality, security, and continuous improvement
- Collaborative, technically strong teams operating in mission-focused environments
- Long-term career development within a highly specialised and growing sector
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Java Developer employer: Addition Solutions Ltd
As a TechOps Consultant at our organisation, you'll thrive in a dynamic and supportive environment that values innovation and professional growth. With flexible working options and a culture built on trust and collaboration, you will have the autonomy to make impactful decisions while working alongside passionate colleagues dedicated to excellence in enterprise AI management. Join us to shape the future of technology in a role that offers both challenge and reward.
StudySmarter Expert Advice🤫
We think this is how you could land Java Developer
✨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 Addition Solutions Ltd 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 Addition Solutions Ltd.
✨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 Addition Solutions Ltd.
✨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 Addition Solutions Ltd 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 Java Developer
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 Addition Solutions Ltd.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Addition Solutions Ltd 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 Addition Solutions Ltd
✨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 Addition Solutions Ltd 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.
