Leeds (Hybrid)
Permanent
£70,000 £75,000 (DOE)

Java Developer needed for a permanent career opportunity based in Leeds (Hybrid). Start ideally Feb/March 2026.

Hybrid Working 2 days/week remote (WFH), and 3 days/week working on-site from the Leeds office.

A chance to work with a leading global IT transformation business specialising in delivering large-scale Government digital modernisation projects.

Key skills, experience + duties to include:

• Java Developer needed with strong front/back-end development skills + experience of AWS Cloud environments.
• Designing, developing + implementation robust + secure Java software solutions using Core Java and Spring Boot.
• AWS Cloud Services including: S3, Lambda, Step Functions, Athena, Glue, DynamoDB, OpenSearch, CloudFormation, API Gateway, ECS, CloudWatch.
• Advantageous skills: understanding of DevOps/DevSecOps concepts, Docker, Containerisation + AWS Associate Developer accreditation.
• Technical Environment: Core Java, Spring Boot, AWS Cloud Services, Kotlin, AngularJS, Jenkins, NodeJS, SQL/NoSQL databases, DynamoDB, GitHub, Backend, Frontend, CI/CD, DevOps, (url removed).
• Benefits: Salary to £70k-75k (DOE) + Hybrid + 10% Bonus + Pension + 22 days holiday + BHs (rising to 25 days) + Death in Service + Health Care Plan + More.

Lead Java Engineer (Hands-On) 80% Coding | Technical Leadership | Modern Platform Remote First (office visit once a month) - You must live within 1 hr 30 of South Manchester £70,000 - £85,000 + Bonus + Excellent Benefits \*\*My client is not able to provide Visa sponsorship We're working with a long-established tech company who are building modern platforms within a complex and meaningful domain. They've embedded Agile and XP practices across engineering, and they're now hiring a hands-on Principal Java Engineer to help lead delivery, raise standards, and support the growth of their teams. This is not an 'architect who doesn't code' role. The expectation is that you'll be around 80% hands-on, building software alongside the team. The Opportunity You'll work as part of a Scrum team delivering real product outcomes, while also contributing to the broader engineering direction. The hands-off element of the role includes: \*\*helping lead Scrum ceremonies and delivery \*\*mentoring and coaching engineers \*\*collaborating with other Principals and the Development Manager \*\*contributing to architectural decisions and technical direction It's a role for someone who still loves coding, but also enjoys influencing how teams work and how systems evolve. Tech Stack & Practices \*\*Java, Spring Boot \*\*TDD, pairing, strong automated testing culture \*\*CI/CD, continuous delivery mindset \*\*AWS (with a mix of approaches including serverless) \*\*Docker, Kubernetes \*\*Terraform / DevOps tooling AWS and DevOps exposure is very beneficial at Principal level - but they're not looking for a pure DevOps engineer. The core of the role is still Java engineering. What They're Looking For \*\*Deep, hands-on Java experience with strong engineering judgement \*\*Proven ability to influence standards and mentor engineers \*\*Comfortable balancing delivery with technical leadership \*\*Strong understanding of building maintainable, scalable systems \*\*Experience working in Agile teams with modern practices \*\*Bonus points for AWS, containerisation, IaC, etc. What's In It For You? \*\*Remote-first working with minimal office travel \*\*Clear scope: still hands-on, but with meaningful technical influence \*\*Strong salary, bonus and excellent benefits \*\*A collaborative, mature engineering culture \*\*Complex systems, long-term platform work, and real impact Interested? Apply now or get in touch for a confidential conversation. Even if you're not actively looking, it's a great time to explore what they're building. Cathcart Technology is acting as an Employment Agency in relation to this vacancy.

Java Developer - Up to 60K + Bonus

We’re working with a global technology consultancy delivering secure, large-scale digital transformation programmes across multiple industries.

Theyre looking for a Java Developer to join a growing engineering team building modern, cloud-based microservices platforms.

This role is ideal for a developer who wants to level up technically, work alongside senior engineers and architects, and gain exposure to enterprise-scale systems.

What Youll Be Doing:

• Developing backend services using Java (JDK 11+) & Spring Boot
• Building scalable microservices & REST APIs
• Working in Agile Scrum teams
• Supporting cloud deployments (AWS environments)
• Contributing to CI/CD and automated testing practices
• Collaborating with technical leads, testers and DevOps engineers

What Theyre Looking For:

• 5+ years commercial Java development experience
• Strong Spring Boot knowledge
• Experience working in Agile environments
• Understanding of microservices architecture
• Passion for clean code and modern engineering practices

Nice to Have:

• AWS or cloud exposure
• Docker / containers
• CI/CD tools (Jenkins, GitLab, SonarQube)
• TDD / automated testing exposure

Security Clearance Requirement:

Due to client project work, candidates must be eligible for UK Security Clearance (SC)

Why Apply?

• Work on large-scale real-world systems
• Strong career development & mentoring
• Hybrid working model
• Modern tech stack & engineering culture
• Excellent benefits package including private medical & additional volunteering leave

Ok I’m In What’s Next?
Please apply with your latest CV

Senior Java Engineer Modern Stack | TDD & CI/CD | Complex Systems Remote First (office visit once a month) - you must live within 1hr 30 of South Manchester £60,000 - £70,000 + Bonus + Excellent Benefits \*\*my client is not able to provide sponsorship We're working with a long-established tech company who are continuing to modernise a complex platform within a highly regulated domain. They've built a strong engineering culture around Agile and XP practices, and they're now looking for a Senior Java Engineer to join one of their Scrum teams. This is a role for someone who is genuinely hands-on, enjoys solving tricky problems, and cares about building software the right way - clean code, testing, collaboration, and continuous improvement. The Opportunity You'll join a cross-functional team working on large-scale systems that have real-world impact. Engineering standards are taken seriously here, but it's not dogmatic - it's practical, delivery-focused, and built around doing things sustainably. The Senior role is almost entirely hands-on, but they're looking for someone with the experience and maturity to: \*\*mentor other engineers \*\*lead by example \*\*contribute to good engineering practices \*\*help the team deliver reliably Tech Stack & Practices The core platform is Java-based, supported by a modern mix of tooling: \*\*Java, Spring Boot \*\*TDD / automated testing \*\*CI/CD and modern delivery pipelines \*\*AWS (including serverless approaches in places) \*\*Docker, Kubernetes \*\*Infrastructure as Code (Terraform, etc.) You don't need to tick every box - strong Java + good engineering habits are the priority. Exposure to AWS and DevOps tooling is a nice bonus. What They're Looking For \*\*Strong experience building backend systems with Java & Spring Boot \*\*Comfortable working with TDD and modern engineering practices \*\*Experience delivering production software in Agile teams \*\*Someone who enjoys mentoring and helping others grow \*\*Collaborative mindset - pairing, code reviews, shared ownership \*\*Bonus points for AWS, Docker/Kubernetes, Terraform, etc. What's In It For You? \*\*Remote-first working with minimal office travel \*\*Strong salary, bonus and excellent benefits \*\*A genuinely good engineering culture (not just "Agile" on paper) \*\*Meaningful work, complex systems, and long-term platform thinking \*\*Plenty of room to learn and grow Interested? Apply now or get in touch for more info - even if you don't have a CV ready, we're happy to chat. Cathcart Technology is acting as an Employment Agency in relation to this vacancy

Senior Java Engineer Modern Stack | TDD & CI/CD | Complex Systems Remote First (office visit once a month) - you must live within 1hr 30 of South Manchester £60,000 - £70,000 + Bonus + Excellent Benefits \*my client is not able to provide sponsorship We're working with a long-established tech company who are continuing to modernise a complex platform within a highly regulated domain. They've built a strong engineering culture around Agile and XP practices, and they're now looking for a Senior Java Engineer to join one of their Scrum teams. This is a role for someone who is genuinely hands-on, enjoys solving tricky problems, and cares about building software the right way - clean code, testing, collaboration, and continuous improvement. The Opportunity You'll join a cross-functional team working on large-scale systems that have real-world impact. Engineering standards are taken seriously here, but it's not dogmatic - it's practical, delivery-focused, and built around doing things sustainably. The Senior role is almost entirely hands-on, but they're looking for someone with the experience and maturity to: \*mentor other engineers \*lead by example \*contribute to good engineering practices \*help the team deliver reliably Tech Stack & Practices The core platform is Java-based, supported by a modern mix of tooling: \*Java, Spring Boot \*TDD/automated testing \*CI/CD and modern delivery pipelines \*AWS (including serverless approaches in places) \*Docker, Kubernetes \*Infrastructure as Code (Terraform, etc.) You don't need to tick every box - strong Java + good engineering habits are the priority. Exposure to AWS and DevOps tooling is a nice bonus. What They're Looking For \*Strong experience building Back End systems with Java & Spring Boot \*Comfortable working with TDD and modern engineering practices \*Experience delivering production software in Agile teams \*Someone who enjoys mentoring and helping others grow \*Collaborative mindset - pairing, code reviews, shared ownership \*Bonus points for AWS, Docker/Kubernetes, Terraform, etc. What's In It For You? \*Remote-first working with minimal office travel \*Strong salary, bonus and excellent benefits \*A genuinely good engineering culture (not just "Agile" on paper) \*Meaningful work, complex systems, and long-term platform thinking \*Plenty of room to learn and grow Interested? Apply now or get in touch for more info - even if you don't have a CV ready, we're happy to chat. Cathcart Technology is acting as an Employment Agency in relation to this vacancy.

Senior Java Engineer Modern Stack | TDD & CI/CD | Complex Systems Remote First (office visit once a month) - you must live within 1hr 30 of South Manchester £60,000 - £70,000 + Bonus + Excellent Benefits \*\*my client is not able to provide sponsorship We're working with a long-established tech company who are continuing to modernise a complex platform within a highly regulated domain. They've built a strong engineering culture around Agile and XP practices, and they're now looking for a Senior Java Engineer to join one of their Scrum teams. This is a role for someone who is genuinely hands-on, enjoys solving tricky problems, and cares about building software the right way - clean code, testing, collaboration, and continuous improvement. The Opportunity You'll join a cross-functional team working on large-scale systems that have real-world impact. Engineering standards are taken seriously here, but it's not dogmatic - it's practical, delivery-focused, and built around doing things sustainably. The Senior role is almost entirely hands-on, but they're looking for someone with the experience and maturity to: \*\*mentor other engineers \*\*lead by example \*\*contribute to good engineering practices \*\*help the team deliver reliably Tech Stack & Practices The core platform is Java-based, supported by a modern mix of tooling: \*\*Java, Spring Boot \*\*TDD / automated testing \*\*CI/CD and modern delivery pipelines \*\*AWS (including serverless approaches in places) \*\*Docker, Kubernetes \*\*Infrastructure as Code (Terraform, etc.) You don't need to tick every box - strong Java + good engineering habits are the priority. Exposure to AWS and DevOps tooling is a nice bonus. What They're Looking For \*\*Strong experience building backend systems with Java & Spring Boot \*\*Comfortable working with TDD and modern engineering practices \*\*Experience delivering production software in Agile teams \*\*Someone who enjoys mentoring and helping others grow \*\*Collaborative mindset - pairing, code reviews, shared ownership \*\*Bonus points for AWS, Docker/Kubernetes, Terraform, etc. What's In It For You? \*\*Remote-first working with minimal office travel \*\*Strong salary, bonus and excellent benefits \*\*A genuinely good engineering culture (not just "Agile" on paper) \*\*Meaningful work, complex systems, and long-term platform thinking \*\*Plenty of room to learn and grow Interested? Apply now or get in touch for more info - even if you don't have a CV ready, we're happy to chat. Cathcart Technology is acting as an Employment Agency in relation to this vacancy.

?? Senior Software Developer (Java)
?? Cardiff
?? Up to £65,000 DOE

What You’ll Do:

You’ll join a collaborative, cross-functional team where you’ll play a key role in building and enhancing robust software solutions used by organisations around the world. Day to day, you’ll be hands-on with designing, developing and maintaining scalable applications, while contributing to technical decisions and continuously improving how the team works.

You’ll work closely with Product Owners, QA and DevOps colleagues to translate requirements into high-quality solutions, support production releases, and help resolve complex technical issues. There’s also a strong opportunity to mentor others and progress towards a lead developer position, shaping both the technology and the team’s future direction.

What You’ll Bring:

• Strong commercial experience with Java 8+ and modern development practices
• Solid knowledge of frameworks such as Spring Boot, Spring Cloud and Hibernate
• Experience building microservices and RESTful APIs
• A good understanding of modern software architectures including microservices and event-driven design
• Hands-on experience with AWS, Docker and cloud-native development
• Confidence writing and maintaining unit tests using tools such as JUnit and Mockito
• Experience working with relational databases such as SQL or MySQL
• Familiarity with Git-based version control and Agile delivery environments
• Strong problem-solving skills, clear communication and a genuine desire to keep learning

Why You Should Apply:

This is a chance to work on meaningful software that supports workplaces globally. You’ll benefit from a hybrid working model, strong support for personal development, and a culture that values collaboration, learning and inclusion.

Alongside an attractive benefits package including enhanced parental leave, generous annual leave, healthcare support and a pension scheme, you’ll have access to learning platforms and clear opportunities to grow your career in a supportive, forward-thinking environment.

Ready to Apply?

Contact Jack Winder to find out more.

Please apply with a CV and a cover letter outlining why you’re perfect for the role.
Know someone great for the job? We offer a referral scheme-just get in touch!
Note: We do our best to respond to every application, but due to volume, we can’t always guarantee it. If you haven’t heard back within 7 days, unfortunately, you haven’t been successful this time. Keep an eye on our site for new opportunities!

Principal Software Engineer – AI & Innovation

Recruiting a Principal Software Engineer with a proven track record of delivering innovative, AI driven solutions and the curiosity to explore beyond traditional technology boundaries.

Within the newly createdAI & Innovation team, you will shape the future of the organisation’s products through cutting-edge technology, experimentation and creative thinking.

A truly exciting opportunity to influence and create something new.

Key Responsibilities

Build innovative MVPs to validate ideas and accelerate learning

Lead the design and implementation of scalable, high-performance software systems

Collaborate closely with Product, Design, QA, and Engineering teams

Evaluate, experiment and recommend new technologies, frameworks and tools

Mentor and coach engineers to create a culture of innovation and continuous improvement

Oversee code reviews and ensure delivery of high-quality maintainable software

Troubleshoot and resolve complex technical challenges

Contribute to strategic planning and align technology decisions with business goals

Essential Skills

Significant experience in a senior software engineering position

Proven experience delivering innovative AI solutions

Practical knowledge of AI, including building and training LLMs

Strong understanding of Microservices and modern web architectures

Deep expertise in programming languages and frameworks such as Java and Spring Boot

Extensive experience designing large-scale systems

Strong knowledge of AWS cloud architecture and services

Excellent problem-solving skills and a results-driven mindset

Experience mentoring and guiding technical teams to deliver

Desirable Experience

DevOps practices and CI/CD pipelines

Secure-by-design development and security best practices

Contributions to open-source projects

TPBN1_UKTJ

Java Tech Lead / Architect with 10+ years experience is needed for an initial 6-month contract with further extensions up to 18 months paying £300 a day inside IR35 to drive the design and execution of high-scale, event-driven systems. This role is a hybrid of strategic architectural planning and hands-on engineering leadership. You will be responsible for defining technical roadmaps, mentoring a high-performing engineering team, and ensuring the delivery of robust microservices within a complex, long-term program.

Key Responsibilities

• Architectural Leadership: Design and oversee the implementation of scalable microservices and event-based architectures using Java, Spring Boot, and Kafka.
• Team Steering: Act as the technical point of contact for the team; facilitate decision-making, sprint planning, and resource allocation.
• Quality Governance: Conduct rigorous code reviews, approve pull requests, and establish best practices for CI/CD and automated testing.
• Hands-on Delivery: Lead by example by contributing to mission-critical code and solving complex technical bottlenecks that require “Architect-level” troubleshooting.
• Stakeholder Management: Translate business requirements into technical blueprints and communicate progress/risks to program leadership.

Technical Requirements

10+ years of professional software development experience

Expert-level proficiency in Java (current versions) and Spring Boot.

Deep expertise in Kafka for event-driven architecture and streaming.

Proven track record in Microservices design patterns, API Gateway management, and Cloud-native development.

Previous experience leading engineering teams through the full SDLC in an Agile environment.

Preferred Attributes

Experience with Cloud platforms (AWS/Azure/GCP) and containerization (Docker/Kubernetes).

Strong understanding of Database design (SQL and NoSQL).

Excellent communication skills, capable of bridging the gap between technical teams and non-technical stakeholders.

Working Conditions

Hybrid Model: Candidates must be able to commute to West Sussex 3 days per week.

Stability: While the initial contract is 6 months, this is a multi-year program offering significant long-term potential.

This is the future of HL - and the future of investing. We're building the next generation of platform for one of the UK's largest financial services companies, trusted by over 1.8 million clients and managing £130+ billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. All development within Core Wealth Services is greenfield. That means a clean slate - the chance to design, architect and build from the ground up using modern technologies and best practices. No legacy constraints. Just the freedom to architect scalable, robust, and future-proof solutions. Core Wealth Services forms the backbone of our investment platform, managing the essential business logic and processes that power wealth management operations. This domain handles critical financial workflows and regulatory compliance, ensuring secure and seamless experiences for millions of users. Our purpose is clear: to give people financial freedom. By joining us, you'll help deliver innovative, secure, and scalable solutions that make investing easier and more accessible for everyone. This is the future of HL. This is the future of investing. And you can be part of it. What You'll Be Doing Building and deploying scalable, fault-tolerant micro-services at pace, owning them end to end. Integrating with cloud applications, operating in a zero-trust, security-first environment. Delivering value iteratively, always focused on customer outcomes and short feedback loops. Creating and visualising application metrics to help understand usage patterns and anomalies. Reviewing code with peers, with an eye for both quality and velocity. Collaborating with other members in the team to solve problems, not just ship features. Innovating, bringing new ideas to the table for adoption throughout HL Digital. Contributing to technical decisions and shaping how we build our services. About You Experience building and deploying services with Java and Spring Boot. Comfort working in a cloud-native environment - Kubernetes (EKS), containers, scaling etc. An understanding of observability, using tools like Prometheus and Grafana to keep services healthy and understand usage patterns. Familiarity with some AWS services and how to integrate them into modern applications. A keen focus on quality and security, baking testing and scanning into CI/CD pipelines. Capable of writing clean, maintainable and well-tested code. Happy to review, share knowledge and learn from senior engineers within the team. Adaptable, thriving in a fast-moving environment where we ship things quickly and always look to evolve. Your Technical Toolkit Java (21) and Spring Boot AWS and cloud-native architecture RDBMS / NoSQL databases Event-driven and microservices architectures Containers (e.g., Docker, Kubernetes) CI/CD pipelines and DevOps principles TDD / BDD testing frameworks Salary & Package We offer a competitive, depending on experience, alongside a generous performance-based bonus scheme . Your total reward package includes: ?? Up to 19% pension contribution - helping you plan confidently for the future ?? A wide range of excellent benefits , from lifestyle perks to wellbeing support, designed to help you thrive both in and out of work We believe in recognising and rewarding the impact you make - and ensuring you feel valued every step of the way. Interview Process 3 Stage interview: Stage 1 - Discussion with our Hiring Manager (30mins): A chance to talk with our Hiring Manager in more detail about the role, our tech stack and some of the problems we solve every day. Here, we'll dig a bit more into some of your experiences, understand the processes you're familiar with and the technologies you've used to deliver end user value. Stage 2 - Technical (70mins): For the technical part, we'd like you to sit down with some of your potential peers to work through a coding solution. We'll be looking together at where a sample piece of code has issues and how we might address them. Stage 3 - Culture Fit (30mins): In our Cultural Fit section, we'll be looking to learn more about your past experiences, what keeps you motivated, where we may be able to help you improve further, key decisions you've helped to make and issues you've resolved. Working Schedule We're based in the stunning Paddington Central offices at 4 Kingdom Street , a modern workspace designed to energise your day and elevate collaboration. What Makes It Special? ?? Landscaped rooftop gardens - perfect for a breath of fresh air or informal catch-ups. ?? London's highest rooftop basketball court - yes, really! ? On-site café and bar with sweeping views across West London. ????? Wellness amenities including showers, lockers, hairdryers, and fresh towels. ?? Cyclist-friendly with secure bike storage and drying rooms. ??? Stylish lounge areas, booths, and breakout spaces for focused work or relaxed chats. ?? Canalside location near Little Venice, with floating restaurants, coffee shops, and a seasonal pop-up garden bar. ?? Unbeatable transport links - just steps from Paddington Station and the Elizabeth Line, with Heathrow only 30 minutes away. We embrace a hybrid working model that gives you the best of both worlds: 2-3 days a week in the office to connect, collaborate, and enjoy everything the space has to offer. Remote flexibility for deep focus, work-life balance, and personal productivity. This is a full-time role , working 37.5 hours per week , Monday to Friday. TPBN1\_UKTJ

CCTV Operator - High Wycombe - England, HP11 2JZ

CCTV Operator – High Wycombe (HP11 2JZ)

Pay: £15.50 per hour
Shifts: 4 days / 4 off / 4 nights (42 hours per week)

We are recruiting an experienced and proactive CCTV Operator to support a 24/7 University Control Room. You will act as the central point for campus security, coordinating incidents, supporting the Security Team, and ensuring the safety of students, staff, visitors, and property.

Benefits

• Cycle-to-work scheme, pension, life assurance
• Referral bonus, training & development
• ReWard perks : gym discounts, retailer & travel savings, restaurant and supermarket vouchers, cinema tickets
• 24/7 Employee Assistance Programme

Role Responsibilities

• Deliver and supervise in-house security services across campus
• Coordinate Security staff and ensure adequate resource cover
• Gather and share intelligence affecting University safety
• Support preparation for Martyn’s Law (launch Spring 2027)
• Oversee physical and electronic patrols to deter crime and anti-social behaviour
• Deploy resources effectively and maintain task/event schedules
• Respond quickly to alarms, incidents, and safety concerns
• Operate all control room systems (CCTV, radios, access control, databases)
• Lead incident management from minor issues to critical situations
• Produce accurate incident reports and identify or escalate risks
• Liaise with Police and external agencies when required
• Ensure 24/7 contact and response coverage across all areas
• Monitor contractors and ensure compliance
• Adjust working hours when necessary and complete required training
• Follow all legislation, policies, and instructions from Security Management
• Carry out additional duties as required by the department

Requirements

• Valid SIA Frontline & CCTV Licence (essential)
• At least 1 year experience as a Security Officer or CCTV Operator
• Excellent communication, customer service, and team motivation skills
• Strong personal presentation and professional attitude
• IT literate; able to operate security/emergency systems
• Experience with Microsoft Word, Excel, PowerPoint
• Quick thinker with good problem-solving ability
• Proactive, reliable, and confident dealing with people
• 5-year checkable work history

Principal Software Engineer - AI & Innovation

Recruiting a Principal Software Engineer with a proven track record of delivering innovative, AI driven solutions and the curiosity to explore beyond traditional technology boundaries.

Within the newly createdAI & Innovation team, you will shape the future of the organisation’s products through cutting-edge technology, experimentation and creative thinking.

A truly exciting opportunity to influence and create something new.

Key Responsibilities

• Build innovative MVPs to validate ideas and accelerate learning
• Lead the design and implementation of scalable, high-performance software systems
• Collaborate closely with Product, Design, QA, and Engineering teams
• Evaluate, experiment and recommend new technologies, frameworks and tools
• Mentor and coach engineers to create a culture of innovation and continuous improvement
• Oversee code reviews and ensure delivery of high-quality maintainable software
• Troubleshoot and resolve complex technical challenges
• Contribute to strategic planning and align technology decisions with business goals

Essential Skills

• Significant experience in a senior software engineering position
• Proven experience delivering innovative AI solutions
• Practical knowledge of AI, including building and training LLMs
• Strong understanding of Microservices and modern web architectures
• Deep expertise in programming languages and frameworks such as Java and Spring Boot
• Extensive experience designing large-scale systems
• Strong knowledge of AWS cloud architecture and services
• Excellent problem-solving skills and a results-driven mindset
• Experience mentoring and guiding technical teams to deliver

Desirable Experience

• DevOps practices and CI/CD pipelines
• Secure-by-design development and security best practices
• Contributions to open-source projects

Java Engineer | Glasgow based | Must have Azure experience! | £550-£700 (Inside IR35) | 6 months initially (likely extension)

We’re looking for a Java Engineer, that has previous experience working with Azure, specifically Azure app services for a range of exciting projects. If you don’t hold strong experience in this cloud, it will not be right for you.

Rate: £550-£700 (Inside IR35)
Length: 6-month initial contract, strong likelihood of extension
Location: Scotland (fully on site)

Key Skills & Experience:

• Strong core Java development background
• Experience with Spring Boot
• Exposure to Azure App Services
• Proficiency with CI/CD pipelines (Jenkins preferred)
• Terraform experience desirable
• Must have valid Right to Work in the UK (no sponsorship available)

You’ll be joining a well established organisation, working on a range of internal systems and services.

If this sounds like you, apply now for more details!

Java Engineer | Glasgow based | Must have Azure experience! | £550-£700 (Inside IR35) | 6 months initially (likely extension)

Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy.

To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

Java Software Engineer - Government Project

Active SC Clearance Required

Day Rate:£420 per day inside IR35
Duration:6 months
Location:Telford - 2 days on-site per month (mostly remote)

Job Description:

We are seeking an experienced software engineer to join a dynamic team that plays a crucial role in supporting key services. This role involves contributing to various project and live delivery tasks, ensuring that the systems are well-supported and efficiently managed.

Key Responsibilities:

• Contribute to both project work and live service delivery.
• Develop, implement, and maintain high-quality software solutions.
• Collaborate with cross-functional teams to ensure successful and timely delivery of services.

Key Skills:

• Proficiency in Java
• Experience with Spring Boot
• Knowledge of PL/SQL

Security Clearance:

• Active SC clearance required

If this role aligns with your skills and experience, and you’re looking to contribute to meaningful public sector data programmes, we’d love to hear from you. Apply today to be considered.

?? Senior Software Developer (Java) ?? Cardiff ?? Up to £65,000 DOE What You'll Do: You'll join a collaborative, cross-functional team where you'll play a key role in building and enhancing robust software solutions used by organisations around the world. Day to day, you'll be hands-on with designing, developing and maintaining scalable applications, while contributing to technical decisions and continuously improving how the team works. You'll work closely with Product Owners, QA and DevOps colleagues to translate requirements into high-quality solutions, support production releases, and help resolve complex technical issues. There's also a strong opportunity to mentor others and progress towards a lead developer position, shaping both the technology and the team's future direction. What You'll Bring: Strong commercial experience with Java 8+ and modern development practices Solid knowledge of frameworks such as Spring Boot, Spring Cloud and Hibernate Experience building microservices and RESTful APIs A good understanding of modern software architectures including microservices and event-driven design Hands-on experience with AWS , Docker and cloud-native development Confidence writing and maintaining unit tests using tools such as JUnit and Mockito Experience working with relational databases such as SQL or MySQL Familiarity with Git-based version control and Agile delivery environments Strong problem-solving skills, clear communication and a genuine desire to keep learning Why You Should Apply: This is a chance to work on meaningful software that supports workplaces globally. You'll benefit from a hybrid working model, strong support for personal development, and a culture that values collaboration, learning and inclusion. Alongside an attractive benefits package including enhanced parental leave, generous annual leave, healthcare support and a pension scheme, you'll have access to learning platforms and clear opportunities to grow your career in a supportive, forward-thinking environment. Ready to Apply? Contact Jack Winder to find out more. Please apply with a CV and a cover letter outlining why you're perfect for the role. Know someone great for the job? We offer a referral scheme-just get in touch! Note: We do our best to respond to every application, but due to volume, we can't always guarantee it. If you haven't heard back within 7 days, unfortunately, you haven't been successful this time. Keep an eye on our site for new opportunities! TPBN1\_UKTJ

Software Engineer (Java)SC Clearance RequiredCertain Advantage are hiring for a Software Engineer based in Portsmouth.This role is on an initial 12-month contract and is required to be onsite 3 days a week. Your responsibilities:

• Contribute across the full software development lifecycle, including design, development, testing, and deployment.
• Design software solutions using UML/SysML and contribute to technical architecture within a microservices environment.
• Develop high-quality Java applications using Spring Boot, Spring Framework and related technologies.
• Implement and maintain RESTful web services over HTTPS within distributed systems.
• Write and maintain automated tests, ensuring quality and reliability are built into the solution from the outset.
• Participate in Agile ceremonies including sprint planning, estimation, reviews and retrospectives.
• Collaborate closely with team members and wider stakeholders to design, implement and test new product features.
• Contribute to CI/CD pipelines, source control (Git) and issue tracking tools such as Jira.
• Ensure compliance awareness and act with integrity, supporting standards, reputation and sustainable growth.

The individual:

• Java Core (version 8+)
• Spring Boot, Spring Framework - Good knowledge of Developing in Spring with Hibernate
• Good Knowledge of developing REST within HTTPS
• Experience of developing within a microservice architecture
• Distributed systems
• Knowledge and use of software design patterns
• Agile Development Processes
• CI/CD delivery techniques
• Source code management (we use GIT)
• Use of Issue tracking systems (such as Jira)
• UML/SysML using Enterprise Architect or similar
• Ability to self-motivate and to work well within a team environment.
• Ability to promote innovation in self and others
• Ability to interact with internal & external stakeholders in a confident and professional manner

Does this sound like your next career move? Apply today.Working with Certain AdvantageWe go the extra mile to find the best people for the job. If you’re hunting for a role where you can make an impact and grow your career, we’ll work with you to find it.We work with businesses across the UK to find the best people in Finance, Marketing, IT and Engineering. If this job isn’t for you, head to certainadvantage.co.uk and register for job alerts and career guidance tips.

On behalf of our client, we are seeking to recruit a Java Software Developer on an initial 12-month contract. As the Java Software Developer, you shall contribute to all stages of the software development lifecycle and thus have solid experience in design (particularly using UML), development (particularly using Java technologies) and test. The developer should have experience of working with microservices. Automated testing is a critical part of the project so any experience of this would be highly beneficial

Role: Java Software Developer
Pay: 55 per hour Via Umbrella
Location: Portsmouth
Contract: Monday - Friday 37 hours per week, 12 months contract
IR35 Status: Inside
Security Clearance: Security Clearance required on submission

Responsibilities

• Development of code within an agile environment (scrum).
• Working with the team to design, implement and test features for a new product development.
• Task estimation in accordance with sprint planning.

Essential Skills:

• Java Core (version 8+)
• Spring Boot, Spring Framework - Good knowledge of Developing in Spring with Hibernate
• Good Knowledge of developing REST within HTTPS
• Experience of developing within a microservice architecture
• Web Services using RESTful APIs
• Distributed systems
• Knowledge and use of software design patterns
• Agile Development Processes
• CI/CD delivery techniques
• Source code management (we use GIT)
• Use of Issue tracking systems (such as Jira)
• UML/SysML using Enterprise Architect or similar
• Ability to self-motivate and to work well within a team environment.
• Ability to promote innovation in self and others
• Ability to interact with internal & external stakeholders in a confident and professional manner

If you are interested in applying for this position and you meet the requirements, please send your updated CV to: Natalie Dalkin at Line Up Aviation

Line Up Aviation has carved its own place in the recruitment of Aviation and Aerospace personnel all over the world for more than 30 years. We work with some of the industry’s best known companies who demand the highest standard of applicants.

" on Twitter for all of our latest vacancies, news and pictures from our busy UK Head Office. Interact with us using the tag at anytime! Thank you for your follow!"

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Lead Java Engineer (Hands-On) 80% Coding | Technical Leadership | Modern Platform Remote First (office visit once a month) - You must live within 1 hr 30 of South Manchester £70,000 - £85,000 + Bonus + Excellent Benefits \*My client is not able to provide Visa sponsorship We're working with a long-established tech company who are building modern platforms within a complex and meaningful domain. They've Embedded Agile and XP practices across engineering, and they're now hiring a hands-on Principal Java Engineer to help lead delivery, raise standards, and support the growth of their teams. This is not an "architect who doesn't code" role. The expectation is that you'll be around 80% hands-on, building software alongside the team. The Opportunity You'll work as part of a Scrum team delivering real product outcomes, while also contributing to the broader engineering direction. The hands-off element of the role includes: \*helping lead Scrum ceremonies and delivery \*mentoring and coaching engineers \*collaborating with other Principals and the Development Manager \*contributing to architectural decisions and technical direction It's a role for someone who still loves coding, but also enjoys influencing how teams work and how systems evolve. Tech Stack & Practices \*Java, Spring Boot \*TDD, pairing, strong automated testing culture \*CI/CD, continuous delivery mindset \*AWS (with a mix of approaches including serverless) \*Docker, Kubernetes \*Terraform/DevOps tooling AWS and DevOps exposure is very beneficial at Principal level - but they're not looking for a pure DevOps engineer. The core of the role is still Java engineering. What They're Looking For \*Deep, hands-on Java experience with strong engineering judgement \*Proven ability to influence standards and mentor engineers \*Comfortable balancing delivery with technical leadership \*Strong understanding of building maintainable, scalable systems \*Experience working in Agile teams with modern practices \*Bonus points for AWS, containerisation, IaC, etc. What's In It For You? \*Remote-first working with minimal office travel \*Clear scope: still hands-on, but with meaningful technical influence \*Strong salary, bonus and excellent benefits \*A collaborative, mature engineering culture \*Complex systems, long-term platform work, and real impact Interested? Apply now or get in touch for a confidential conversation. Even if you're not actively looking, it's a great time to explore what they're building. Cathcart Technology is acting as an Employment Agency in relation to this vacancy.

Role: Java Developer

Location: Solihull/Remote (2 days per week on-site)

Duration: 6 Months

Day rate: Negotiable Outside IR35

Clearance: Active SC clearance required & NPPV3 is desirable

About the Role:

We are seeking a highly skilled Lead Java Developer to join our team and work on a large-scale public sector program. This unique development opportunity involves creating and implementing solutions for our portfolio of biometric products, supporting live systems, and diagnosing incidents. You will be part of a collaborative team that prides itself on engineering the best possible Java code.

Key Responsibilities:

• Develop and implement solutions for biometric products.
• Support live systems and diagnose incidents.
• Collaborate with the team to ensure high-quality Java code.

Essential Skills and Experience:

• Proficiency in Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, Quartz, SQL Database (PostgreSQL), JPA (Hibernate), REST and SOAP Web Services, Messaging service (ActiveMQ), Maven, Junit, Jenkins, AWS Cloud hosting and its components, Postgres/Aurora, Bootstrap, Docker, TDD, Agile (Scrum)
• Public sector experience.
• 8-10 years of hands-on experience with large-scale Spring-based Java projects.
• Experience supporting live systems and diagnosing incidents.
• Experience in large-scale integration projects involving microservices, messaging, web services, and distributed systems.
• Experience with web services (SOAP and RESTful).
• Experience with containerization (Docker).
• Experience with testing frameworks like JUnit, Mockito, Powermock, JMock, DBUnit, TestContainers.
• Experience connecting processes across several systems with message brokers like ActiveMQ.
• Experience with Continuous Integration methodologies - Maven, GIT, Jenkins, SonarQube, and Stash Repository.
• Experience developing in a Linux development environment.
• Experience working with a suite of Atlassian products.
• Experience working with open-source database management systems like PostgreSQL.
• Experience working with AWS services (EC2, SQS, RDS, DynamoDB, S3, Route53, KMS, Cloudwatch).
• Monitoring using Grafana.
• Agile development methods - Scrum, Kanban, TDD, BDD.
• Strong analytical and decision-making abilities.

Desired Skills and Experience:

• Experience in Angular and Node JS.
• Experience in Jaspersoft reporting tool.
• DBA experience in performance tuning SQL queries and Postgres/Aurora DB config.
• Experience working with Spring Cloud, Spring Batch, and Spring Integration.
• Experience working with Activiti BPMN.
• Experience working with Postfix.
• Experience in AWS DevOps.
• Ability to create a cohesive working environment and build high-performing teams.
• Strong stakeholder management.
• Hands-on Java development experience working on digital or technology projects at a leading consultancy, agency, or government organization.
• AWS or Azure certification, or willingness to attain the certification.
• Self-starter, comfortable working in both process-driven and ambiguous environments.
• Experience and passion for working within Central Government and other sectors.
• Proven capability of working successfully with senior client stakeholders and end-users, quickly building successful relationships, and establishing credibility.
• Passion for digital and technology, with the drive and determination to continually learn new things and develop yourself and others.
• Strong written, presentation, and verbal communication skills, with a high degree of attention to detail.
• Strong organizational skills, with the ability to work independently in a highly collaborative, team-based environment.

What We Are Looking For:

• Ability to manage and build relationships with teams, relevant stakeholders, and third-party sub-contractors utilizing effective and appropriate governance mechanisms.
• Knowledge of CI/CD tools and agile methodologies, and hands-on delivery experience.
• Drive outcomes and business value, coordinate activities across teams to establish pace of delivery.

Job title: Senior Engineer - Identity
Contract: 6 months (extension possible)
Location: London (Hybrid - 1 day onsite, 4 days remote)

Overview
We are seeking a Senior Engineer to support and deliver across key Identity-related workstreams. This role requires a strong backend engineering foundation combined with hands-on delivery capability across distributed systems. The successful candidate will operate across multiple software components, contributing to both new delivery and continuous improvement initiatives.

You will be expected to take ownership, proactively drive progress, and work within a structured delivery framework while maintaining a clear focus on product impact and customer outcomes.

Core Technical Skills
Skills

• Java and/or Kotlin
• Micronaut or Spring Boot
• Experience building and supporting distributed systems
• React / Next.js
• AWS and/or Azure experience

Experience

• Identity & Access Management standards (OAuth 2.0, OIDC, SAML)
• Microsoft Azure services (application deployment, integration, identity management)
• Observability and monitoring practices (Dynatrace experience advantageous)

Key Responsibilities

• Contribute to delivery across Identity-focused engineering streams
• Work across multiple software components with a hands-on, problem-solving mindset
• Improve and remediate existing systems where required
• Operate effectively within a structured engineering delivery process
• Take ownership of deliverables and proactively drive work forward
• Align technical solutions with product objectives and customer impact