At a Glance
- Tasks: Design and develop scalable Java backend services for data processing and analytics.
- Company: Join Xantura, a mission-driven tech company tackling society's big challenges.
- Benefits: Competitive salary, 25 days leave, private medical insurance, and training opportunities.
- Other info: Hybrid role with excellent career growth and support for mental wellbeing.
- Why this job: Make a real impact while solving complex technical problems in a collaborative environment.
- Qualifications: Strong Java experience, problem-solving skills, and a degree in Computer Science or related field.
The predicted salary is between 56700 - 69300 £ per year.
We are looking for an experienced Senior Java Developer to join the engineering team at Xantura, helping to design, build, and evolve our cloud-based data and analytics platform used by local authorities and public sector organisations across the UK. This is a hands-on senior engineering role focused on developing scalable backend systems, improving platform reliability and performance, and contributing to the ongoing evolution of our architecture, engineering standards, and development practices. The role would suit someone who enjoys solving complex technical problems, working with large-scale data processing systems, and contributing to both technical delivery and engineering improvement initiatives.
Key Responsibilities
- Design, develop, maintain and support Java-based backend services for data acquisition, processing, matching, analytics and integration, built to scale and perform under load.
- Build and maintain applications that use Java RMI for communication between services (hands‑on RMI experience is essential).
- Show real depth of understanding in your solutions: explain and justify your design decisions, and judge when to use an existing library and when a custom implementation is the better choice.
- Write clean, maintainable, well‑tested code to agreed engineering standards, and collaborate with QA to meet the Definition of Done.
- Investigate and resolve complex production issues and performance bottlenecks, and improve resilience, monitoring and operational reliability.
- Contribute to architecture discussions, design and peer reviews, and mentor junior and mid‑level developers.
What are we looking for?
- A degree in Computer Science, Software Engineering or a related technical discipline, or equivalent practical experience.
- Strong commercial experience developing enterprise applications in Java, with excellent knowledge of Java 17+, Maven, and JUnit and automated testing approaches.
- Proven skill in performance optimisation and troubleshooting.
- Experience with CI/CD pipelines, source control workflows and Azure DevOps or similar lifecycle tooling.
- Strong grasp of software engineering principles, clean code and maintainable design, backed by sharp analytical and problem‑solving skills.
- Clear communicator who collaborates well in multi-disciplinary teams, with a proactive mindset, strong ownership and a commitment to continuous improvement.
Location – This is a hybrid role based in our office in London (Borough). You would be expected to be able to work from the office at least 1-2 days per week. Some travel is also required for on‑site client engagements as needed.
What can we offer you?
- Competitive salary reviewed annually.
- Work for a passionate, mission‑driven company solving society’s big problems.
- Training and development opportunities.
- 25 days annual leave (plus bank holidays).
- Company pension.
- Private medical insurance.
- Generous enhanced parental leave policies.
- Cycle to work scheme.
- Flu Vaccinations, Eye Test and contribution towards Glasses for VDU use.
- Employee Assistance Programme.
- Mental health and wellbeing support.
- Remote GP access.
- Counselling/therapy.
- Physiotherapy.
- Medical second opinions.
Senior Java Developer employer: Xantura Limited
Xantura Limited is an exceptional employer located in the vibrant Greater London area, offering a dynamic work culture that fosters innovation and collaboration. Employees benefit from comprehensive professional development opportunities, enabling them to grow their skills in data engineering and analytics while working on impactful projects with direct client engagement. With a focus on cutting-edge technology and a supportive team environment, Xantura provides a rewarding workplace for those looking to make a meaningful contribution in the field of data and analytics.
StudySmarter Expert Advice🤫
We think this is how you could land Senior 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 Xantura Limited 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 Xantura Limited.
✨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 Xantura Limited.
✨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 Xantura Limited 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 Senior 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 Xantura Limited.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Xantura Limited 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 Xantura Limited
✨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 Xantura Limited 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.
