1 to 25 of 142 Java Developer Jobs

Vacaturebeschrijving You ensure that our back-end systems are a bit better every day! How do I become a Medior Java Developer Coolblue Energy at Coolblue? Coolblue energy is an energy company for anybody who wants to save energy. Besides providing our customers with green energy, we also give them insight into how to reduce energy usage. As … a Java developer you'll work together with other development teams to make our back-end systems work optimally and give our customers the best insight and advice to reduce their energy consumption. In this way you contribute to the green energy transition. Would you also like to become a Java developer at Coolblue Energy? Read … below if the job suits you. You enjoy doing this Writing excellent Java code. Coaching and mentoring your medior/junior colleagues. Working with the Customer Journey Specialist to make our customers even happier. Helping colleagues and yourself by reviewing pull requests and programming in pairs. Working in a team that takes full ownership for their systems. Besides improving More ❯

Java Developer - Remote Working Lynx are currently working with a large IT consultancy to help them source a Senior Java Developer . Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Engaging in the entire software development lifecycle, from gathering requirements and designing … Advocating for and contributing to best practices in software engineering across teams and projects Key skills and experience: Must be either SC cleared or eligible Experience working as a Java Developer Java development experience Experience working within cloud environments If this role sounds of interest, then please apply with your updated CV. More ❯

Java Developer/Backend Software Engineer (Java AWS) London/WFH to £100k Opportunity to progress your career in a senior, hands-on Java Developer role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. W hat's in it for you: Salary to … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer you will join a fairly new team working on a new crypto offering to design, develop and implement high performance cloud-native backend services including owning DevOps … processes to ensure systems are robust, secure and observable. You'll be working with a modern tech stack using Java, Spring Boot, CI/CD, Kubernetes, AWS, EKS and Grafana/Splunk. About you: You have advanced backend software engineering experience with Java, Spring Boot, REST, Postgres, Redis You have experience of running production workloads on Kubernetes (Amazon More ❯

Java Developer/Team Lead Manchester/WFH to £80k Are you a hands-on technical leader with strong Java skills? You could be working on complex and interesting systems using the latest technology within a diverse, supportive environment whilst enjoying a range of perks and continual learning opportunities at a global games software house. As a … Java Developer/Team Lead you will play a key role in guiding and inspiring a small, high-performing development team, working on real-time in sports betting applications. This is an excellent opportunity for a hands-on leader who enjoys balancing technical delivery with team development and collaboration, with approximately a 50/50 split between hands … You'll promote engineering excellence, encouraging best practices and contributing to continuous improvement across both team and wider organisation. A central part of this role will be creating a developer-friendly environment that allows individuals to focus, innovate and perform at their best. Location/WFH: You'll join the team in Central Manchester three days a week with More ❯

Senior Java Developer - Remote Working Lynx are currently working with a large IT consultancy to help them source a Senior Java Developer . Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Engaging in the entire software development lifecycle, from gathering requirements and … Advocating for and contributing to best practices in software engineering across teams and projects Key skills and experience: Must be either SC cleared or eligible Experience working as a Java Developer Java development experience Experience working within cloud environments If this role sounds of interest, then please apply with your updated CV. More ❯

Senior Java Developer - Remote Working Lynx are currently working with a large IT consultancy to help them source a Senior Java Developer . Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Engaging in the entire software development lifecycle, from gathering requirements and … projects Key skills and experience: Previous experience working within a consulting organisation or the public sector is essentail Must be either SC cleared or eligible Experience working as a Java Developer Java development experience Experience working within cloud environments If this role sounds of interest, then please apply with your updated CV. More ❯

Java Developer Hybrid (Belfast) | 6-Month Contract | Inside IR35 Our client, a leading organisation within the financial services sector, is seeking an experienced Java Developer to join their Belfast-based technology team on an initial 6-month contract (Inside IR35). This is an excellent opportunity to work on high-performance, data-driven applications within a … fast-paced enterprise environment. The successful candidate will play a key role in developing and optimising complex batch processing and integration systems using Java 17, Spring Batch, Spring Integration, and GridGain Database. Key Responsibilities Design, develop, and maintain scalable Java 17 applications for enterprise data processing. Build and optimise batch processing solutions using Spring Batch. Design and implement … deployment and operational tasks in Unix/Linux environments. Collaborate with cross-functional technical and business teams to deliver high-quality, reliable solutions. Skills & Experience Required Strong proficiency in Java 17, including modern Java features and best practices. Proven experience with Spring Batch and Spring Integration. Solid understanding of Unix/Linux scripting and SQL. Hands-on experience More ❯

Java Developer/Technical Lead London/WFH to £115k Are you a hands-on Java Developer with technical leadership skills? You could be progressing your career in a hands-on leadership role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. What's in … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer/Technical Lead you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management … engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two More ❯

Java Developer/Technical Lead London/WFH to £115k Are you a hands-on Java Developer with technical leadership skills? You could be progressing your career in a hands-on leadership role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. What's in … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer/Technical Lead you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management … engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two More ❯

Java Developer/Technical Lead London/WFH to £115k Are you a hands-on Java Developer with technical leadership skills? You could be progressing your career in a hands-on leadership role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. W hat's … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer/Technical Lead you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management … engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two More ❯

Java Developer Location: Dublin, hybrid working model Term: 12 months, excellent day rate Java Developer wanted to help design and build high-throughput systems for a well-known name in Dublin’s tech scene. You’ll be part of a modern engineering environment offering excellent hybrid flexibility (with some on-site collaboration) and the freedom to … deliver clean, scalable services. This is a great opportunity for a Java developer seeking a long-term contracting role within an organisation that’s heavily investing in modern technologies and innovative approaches. What you’ll bring: 5+ years Java development experience, comfortable working across Spring/Spring Boot microservices etc. Decent hands on skills with Angular, at More ❯

We’re looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the … ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following – Java 21 (or later) Test Driven Development (TDD) and Behaviour Driven Development (BDD) Large microservice architectures Agile environments and pair programming Implementing APIs for internal and external use Building automated test suites in CI … have: Jackson, JAX-RS, Mockito ActiveMQ or Kafka MongoDB or other NoSQL/document databases Experience scaling high-traffic websites and handling large data sets Interested? Please apply below. Java Software Engineer, Java, Java 21, Microservices, TDD, BDD, Agile, APIs, CI/CD, Leeds, Government, Public Sector, Developer, Contract, Inside IR35 More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Senior Java Developer £65,000 (DOE) North Wales (hybrid) Hyperloop Recruitment are working with a fast-growth tech firm based in North Wales, looking to bring a Senior Java Developer into their team. Working in a team of specialists, the successful candidate will be responsible for creating new solutions to business problems, creating new products whilst … helping build and support our clients' core software and services. The role would suit a talented Java Developer with at least 5 years' commercial experience working with AWS and Java-based technologies, looking for an exciting new challenge. You will have broad fundamental knowledge across multiple domains and have the ability to adapt to new technologies if … required. Tech stack: Java 8+ Spring Boot AWS Database technologies (PostgreSQL, Redis, Elastic Search) RESTful APIs JavaScript Jira/Confluence Unit testing ability It would be a bonus if you've worked with any of the following: Kotlin Kafka Bash Groovy Linux The role is paying up to £65,000 (DOE) plus benefits and will be a hybrid working More ❯

Senior Java Developer | SC Clearance Required | Up to £650 per day (Inside IR35) | Remote with Monthly Visits to London | 6 Month Contract MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing … and testing solutions within the Java stack , collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. Main Responsibilities: Design, code, review, and unit test … applications using the Java stack. Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. Support and enhance legacy systems currently in maintenance mode. Contribute to automated testing (C#) and infrastructure improvements (Docker, Ansible, Python, Linux). Required Skills: Proven experience with Java, Spring, Maven, Git, JUnit, and Web APIs (REST/JSON, XML/SOAP). More ❯

Full Stack Java Developer - contractor Location: Dublin | Model: Hybrid Term: 12 months | Rate: Top-tier day rate Full Stack Java Developer required to help shape high-throughput systems for a household name within the Dublin tech scene. You’ll join a modern engineering setup with great working/hybrid flexibility (with some on-site collaboration) and … the autonomy to ship clean, scalable services. Really nice role for a Java developer looking for a long term contracting role working across a very modern tech stack with an organisation investing heavily in new technological ideas and approaches. What you’ll bring: Very strong Java experience, especially building across Spring/Spring Boot microservices etc. Decent More ❯

Job Description Job Title: Java Developer Location: London (Hybrid – 3 days in office per week) Salary: Up to £80,000 per annum About The Company Join a leading travel company renowned for delivering exceptional customer experiences and innovative digital solutions. As part of a forward-thinking technology team, you'll contribute to shaping the future of travel by … building scalable, high-performance applications used by millions of customers worldwide. The Role We are looking for a skilled Java Developer to join our London-based technology team. You will work on designing, developing, and maintaining enterprise-level applications that support our digital platforms and customer-facing services. Key Responsibilities Design, develop, and maintain high-quality Java … Ensure code quality through unit testing, code reviews, and adherence to best practices. Troubleshoot, debug, and optimize applications for performance and scalability. Stay up-to-date with the latest Java technologies and industry trends. Required Skills & Experience Strong experience in Java (Java 8+) development. Solid understanding of object-oriented programming and design patterns. Experience with Spring Framework More ❯

Sr Lead Java Developer - FX Options - Inside IR35 Central London - Hybrid - 3 days on site, 2 days remote 12 months Brief My client is looking for an experienced Lead Java Developer with hands-on experience integrating Quant libraries to join their FX Options technology team. In this contract, you'll take a hands-on leadership role … and delivering solutions for the front office. Key Responsibilities Lead the design and re-engineering of a core FX Options trading platform. Integrate Quant libraries (typically C++) into a Java-based system - focusing on integration, not C++ development. Deliver high-quality Java UI (Swing) components for front-office users. Work closely with Quants, Traders, and Risk teams to … Provide technical leadership , oversee solution design, and drive best coding practices. Be hands-on in development, debugging, and platform optimisation. Required Skills 5-10 year's experience as a Java Developer within front-office or trading environments. Strong Java Core and Swing Proven experience integrating Quant or pricing libraries . Solid business knowledge of FX Options and More ❯

Sr Lead Java Developer - FX Options - Inside IR35 Central London - Hybrid - 3 days on site, 2 days remote 12 months Brief My client is looking for an experienced Lead Java Developer with hands-on experience integrating Quant libraries to join their FX Options technology team. In this contract, you'll take a hands-on leadership role … and delivering solutions for the front office. Key Responsibilities Lead the design and re-engineering of a core FX Options trading platform. Integrate Quant libraries (typically C++) into a Java-based system - focusing on integration, not C++ development. Deliver high-quality Java UI (Swing) components for front-office users. Work closely with Quants, Traders, and Risk teams to … Provide technical leadership , oversee solution design, and drive best coding practices. Be hands-on in development, debugging, and platform optimisation. Required Skills 5-10 year's experience as a Java Developer within front-office or trading environments. Strong Java Core and Swing Proven experience integrating Quant or pricing libraries . Solid business knowledge of FX Options and More ❯

JR Core Java Developer with Firco New York City, NY (Need Onsite day 1, hybrid 3 days from office Duration: 12 months Position type: W2 contract Mandatory skills: Java, rest API, Firco (Sanction Tool, Microservices architecture,Azure Cloud,SQL database, Docker, kumbernates We are seeking a highly skilled Senior Core Java Developer with extensive experience … Azure Cloud. The ideal candidate will possess strong SQL database expertise and have hands-on experience with Firco (Sanction Tool Responsibilities: Design, develop, and maintain scalable and robust core Java applications. Build and optimize RestAPI services for seamless integration and communication across microservices. Architect and implement microservices using industry best practices. Deploy and manage applications in Azure cloud environment … reviews, provide technical guidance, and ensure adherence to standards. Troubleshoot, debug, and resolve production issues efficiently. Requirements: Overall 10+ years of IT experience is required Strong proficiency in Core Java (Java 8+ Hands-on experience developing and consuming RestAPIs. Extensive knowledge of Microservices architecture and design patterns. Experience deploying, managing, and scaling applications on Azure Cloud Services. Strong More ❯

NEW CONTRACT ROLE - Front Office Senior Java Developer - Rates Pricing London-Based Candidates Only | 6-Month Contract (with potential for extension or perm) | Up to £900/day Inside IR35| Hybrid (2-3 Days On-Site) THE OPPORTUNITY We are working on behalf of a banking client to find a highly experienced Front Office Senior Java Developer to join their Rates Pricing team on the trading floor. This is a niche, high-impact role for a strong Java engineer with low-latency trading systems experience and a deep understanding of front office environments, particularly in pricing, booking, and analytics for Rates, Credit, FX, and Equities. You will be working directly with the trading desk to … lifecycle management. Work on complex quantitative and analytics problems in real-time systems. Contribute to the design and architecture of scalable, resilient systems. TECHNICAL STACK/REQUIREMENTS Expert-level Java (core + multi-threading). Proven ability to work with or cross-train into C++/C# (dual-enabled is ideal). Strong exposure to front office environments - you More ❯