Senior Java Engineer (Remote)

The Investigo Group; United Kingdom; Remote; GBP 60,000 - 90,000; Full time

Job summary

Join a leading technology group in the UK as a Senior Java Engineer. You'll be an integral part of an innovative team, responsible for developing high-performance data analytics platforms and leading technical initiatives. This role offers the chance to work with emerging technologies in a collaborative environment focused on making a positive impact.

Benefits

Private Medical

Generous holiday allowance

Learning and development opportunities

Pension scheme contributions

Flexible working models

Discounts on a wide range of products and services

EV Car Scheme

Bonus potential based on performance

Qualifications

• Experienced in backend engineering with expertise in Java.
• Proficient in building microservices and event-driven systems.
• Comfortable with RESTful API design and implementation.

Responsibilities

• Build and maintain scalable backend systems using Java.
• Contribute to architectural decision-making.
• Mentor junior engineers and champion testing and code quality.

Skills

Java

Microservices

Messaging Systems

Clean Code

Education

7+ years of hands-on backend engineering experience

Tools

Spring Boot

Quarkus

Docker

Kubernetes

Job description

Role: Senior Java Engineer

Location: Remote (UK)

Job Type: Full-time, Permanent

Salary: Competitive, based on experience + benefits + bonus potential

About Us

Come and be a part of The Investigo Group (TIG), a dynamic coalition of cutting-edge tech firms specialising in Platform, Software, Data, AI and other bleeding-edge technology solutions. Our innovative prowess spans the globe while proudly hailing from the United Kingdom.

The group is multi-functional with a large portfolio of B2B products and services.

Our ecosystem is made up of:

IIS, Providing secure internet access in both the public and private sectors. Its mission? To deliver world-class secure internet capabilities enhancing productivity across diverse skillsets and organisations.

Vestigo Consulting is our training and consultancy company, tailored around specialist sector-specific knowledge, and provides regular courses and CPD for our community. The Consultancy side concentrates on expert support of our customers as well as specifically assigned individual deployments.

Collaboraite is a bleeding-edge company that provides our Data and AI capability. A collaborative partner for designing user-centred secure data solutions to overcome operational hurdles, delivered through design thinking and agile coaching.

Diversity, Equity, and Inclusion (DEI) are at the heart of The Investigo Group (TIG). We're dedicated to creating a workplace where people from all backgrounds are not only welcome but empowered to excel. We actively seek diverse talent, promote fairness, and foster an inclusive environment where every voice matters, driving innovation and progress in our dynamic tech community.

The group provides bespoke, secure, user-centric products fuelled by deep technical knowledge advanced data and analytical skills.

We proudly stand as a global leader in this space, partnering with esteemed entities that require these advanced forward-thinking capabilities. These partnerships have been forged from our understanding of customer challenges, as well as our expertise in developing world-leading enterprise product sets.

Join us at TIG, where innovation knows no bounds, and together, we'll shape the future of technology solutions for a safer, more efficient world.

About You:

You’re an experienced backend engineer who thrives in collaborative environments and enjoys solving complex technical problems. You’re confident in your skills with Java and bring solid experience with microservices, messaging systems, and scalable architecture. You’ve likely worked in fast-paced environments and know how to strike the balance between delivery speed and long-term maintainability.

You’re someone who:

• Thinks deeply about software design and architecture.
• Can clearly articulate your thinking to both engineers and non-engineers.
• Enjoys mentoring, supporting teammates, and fostering a strong engineering culture.
• Has a curiosity for emerging technologies and is eager to learn (and teach).
• Feels comfortable working independently, taking initiative, and owning solutions end-to-end.
• Believes in writing clean, testable code and values continuous improvement.

This is a great opportunity if you're passionate about impactful work, value autonomy and collaboration, and want to help build systems that matter.

About The Team:

You’ll be joining a small but mighty cross-functional engineering team within Collaboraite, focused on developing a collaborative data and analytics platform. The work involves cutting-edge challenges; real-time event handling, secure data ingestion, working with LLMs and Computer Vision models, and crafting high-performance indexing and search pipelines.

It’s a great environment for engineers who want to work across a diverse stack, apply modern thinking, and help shape the direction of a fast-growing product and team.

About The Role:

We’re hiring a Senior Java Engineer to join our Collaboraite team, building the next generation of secure, high-performance, and scalable data analytics platforms. This is a hands-on engineering role with real scope for technical leadership. You’ll help design, build, and deliver features and services that power AI-enabled products used by some of the most respected organisations in the UK.

Working alongside software engineers, ML specialists and product colleagues, you’ll contribute to architecture discussions, influence the technical roadmap, and support a culture of engineering excellence.

Key Responsibilities:

• Build and maintain scalable, secure, and high-performance backend systems using Java, with additional exposure to Go and Python.
• Contribute to architectural decision-making and ensure alignment with engineering best practices.
• Build APIs and services in a microservices ecosystem, often using Spring Boot, Quarkus, and modern messaging systems.
• Support CI/CD practices, including infrastructure as code, containerisation, and GitHub Actions or Jenkins.
• Collaborate cross-functionally with Product, ML Engineers, and Designers to define, plan, and deliver features.
• Mentor junior engineers and champion best practices in testing, documentation, and code quality.
• Troubleshoot performance and reliability issues across distributed systems.

Success in This Role Looks Like

• Delivering robust, scalable, and secure features that contribute directly to the platform’s growth and stability.
• Influencing technical direction by contributing to architectural decisions and raising the standard of engineering quality across the team.
• Proactively identifying improvements in system performance, developer experience, or technical debt—and driving them through to implementation.
• Mentoring and supporting team members, fostering a culture of collaboration, continuous learning, and engineering excellence.
• Communicating effectively with stakeholders across disciplines, translating complex technical ideas into clear, actionable insights.
• Taking ownership of projects and features from design through to deployment, monitoring, and refinement—delivering value quickly without compromising maintainability.

What We're Looking For:

• 7+ years of hands-on backend engineering experience, with deep expertise in Java and modern backend ecosystems.
• Proven experience building microservices and event-driven systems (e.g., with Kafka, RabbitMQ, or NATS).
• Strong relational database skills (PostgreSQL), including schema design and SQL optimisation.
• Experience with RESTful API design and implementation, ideally with Spring Boot or Quarkus.
• Familiarity with containerisation (Docker, Kubernetes, Helm) and DevOps practices.
• Comfortable working in Agile, cross-functional teams.
• SC clearance (or eligibility to obtain it) is a requirement for this role.

Soft Skills

• Clear communicator who can explain technical concepts to both technical and non-technical stakeholders.
• Natural mentor who shares knowledge and brings others along.
• A thoughtful engineer who balances speed with maintainability.
• A proactive mindset—always looking for ways to improve systems, codebases, or processes.
• Ability to break down complex problems and drive solutions through to delivery.

Security Clearance Requirements

Please note that holding current SC clearance is not essential at the point of application, but eligibility is required.

This role requires the successful candidate to be eligible for Security Check (SC) clearance. To meet this requirement, applicants must:

• Have the right to work in the UK
• Have lived in the UK continuously for the past 5 years
• Not have spent more than 6 months outside the UK in total during that period
• Be willing to undergo security vetting as part of the onboarding process

• Flexible Working: We offer both hybrid and remote working models.
• Private Medical
• Inclusive Culture: Enjoy an inclusive culture and environment.
• Holiday: Generous holiday allowance.
• Learning: Access to continuous learning and development opportunities.
• Bonus Potential: Bonus potential based on performance and business-related factors.
• Discounts: Discounts on a wide range of products and services.
• Pension: Pension scheme contributions with Government Top-Up
• EV Car Scheme
• More Benefits: Explore additional benefits on our career site.

Please note that the talent acquisition team is managing this vacancy directly and we do not require agency support.

Candidates who are successful will be required to undergo relevant security checks.

Our Process

Our talent acquisition team will be in touch if you're successful, and the team will arrange a short screening call (max 30 minutes) to learn more about you, what you’re looking for, and answer any questions you may have. If all goes well, the team will share your profile with the hiring manager for review. Our interview process is tailored to each role but typically the first half is run remotely with a final stage on-site.

For this position, you can expect a two-stage interview process:

1st Stage – An informal 30-minute video call with the hiring team to discuss your skills and relevant experience. This is an excellent opportunity to learn more about the role and ask any questions.

2nd Stage – A 60-90-minute formal interview where you can anticipate competency and technical questions. Depending on the role, there may also be a short take-home technical exercise or a virtual pair programming task to complete.

As an inclusive employer, please inform us if you require any reasonable adjustments.

Equal Opportunities

Here at TIG we are committed to equal opportunities and value diversity, equity and inclusion at our company. We do not discriminate based on race, religion, colour, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

As a Group, we seek to ensure that individuals with disabilities receive reasonable accommodation throughout the hiring process and ultimately within the job itself. Please contact us to request any accommodations.