Java Software Engineer Core Java Jobs in UK

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Java Identity Engineer IAM & API Security

Mindera is looking for an experienced Java Identity Engineer in London to design and develop secure authentication solutions. The ideal candidate should have extensive Java backend engineering experience and knowledge of IAM, OAuth2, OIDC, and API security. You will collaborate closely with various teams to impl ...

Senior DV Cleared Java Backend Engineer

Addition, a specialist consultancy, is seeking a Java Developer in Cheltenham, London, or Manchester. You will be responsible for developing and maintaining secure, high-performance Java backend services for mission-critical systems, designing scalable microservices, and integrating services with data platforms. ...

Remote Principal Java Engineer & Tech Leader

Solirius Reply is seeking a Principal Engineer specializing in Java to drive innovation and lead technical teams. The ideal candidate will have strong experience in software architecture and a passion for problem-solving. Responsibilities include managing the full software lifecycle, liaising with stakeholders a ...

Backend Engineer — Java/Kotlin, Cloud & Microservices

A leading financial services firm in Greater London is seeking a Back-End Software Engineer to deliver innovative solutions in a collaborative environment. You will design and implement cloud-native applications using Java/Kotlin, focusing on providing an outstanding banking experience. The ideal candidate will ...

Senior Reliability Engineer: Java & Distributed Systems

A financial services technology firm in London seeks a skilled Java Developer with strong expertise in JVM internals and performance tuning. The role emphasizes improving system reliability and requires good communication skills. You will work collaboratively to enhance system performance in high-throughput envi ...

Java Engineer Microservices, AWS & Kubernetes (Hybrid)

A leading tech company in Greater London is seeking an experienced Java Engineer for a 6-month hybrid contract. This role involves designing scalable backend systems and working with modern tools like AWS and Kubernetes. The ideal candidate has strong Java and Spring Boot experience, along with a passion for TDD ...

Senior Java Engineer: Microservices, Cloud & Kafka

JPMorgan Chase & Co. is looking for a Product Engineer in Greater London. You will collaborate with the Product team to develop and deliver software features using Java/Springboot and other technologies. Responsibilities include taking ownership of tasks, ensuring high-quality code, and participating in code rev ...

Remote Senior Java/Kotlin Engineer — Microservices

Intelligent Steps is seeking a Senior Java Developer with experience in Kotlin. This role entails designing robust Microservices Architecture in an automated, data-driven environment. The ideal candidate is passionate about clean code and scalable solutions. This position offers an initial 6-month cont ...

Lead Full Stack Engineer (Java / Vue.js)

Lead Full Stack Engineer (Java / Vue.js) Our client based in Manchester City Centre is currently looking for an experienced Java engineer to join our growing team as a Lead Full Stack Engineer, helping to shape and deliver high-quality, end-to-end solutions across their platform. This is ...

Lead Cloud Platform Engineer — Java & Python

JPMorgan Chase & Co. is hiring a Lead Software Engineer in Public Cloud Engineering based in London. You will set architectural direction, guide system design, and drive engineering excellence using core languages like Java, Go, and Python. The role emphasizes cloud-native experience, proactive engagement with A ...

Lead Cloud Platform Engineer — Java & Python

JPMorgan Chase & Co. is seeking a Lead Software Engineer for its Cloud Engineering Acceleration team in Greater London. This role involves designing platform services, maintaining production code, and fostering team culture. The ideal candidate should have proficiency in core programming languages, hands-on expe ...

eDV Cleared Java Engineer: Microservices & Cloud

A leading recruitment agency is seeking an eDV-cleared Java Developer to join a skilled engineering team in the UK. The role involves hands-on development of complex software systems utilizing modern DevOps practices. Ideal candidates are experienced in Java, Spring, and CI/CD pipelines, and have a passion for w ...

Senior Java Engineer – Pipeline Observability (AWS)

Matillion is seeking a Senior Software Engineer in Manchester to join the Pipeline Observability team. This high-impact role involves building and enhancing production services and APIs to ensure pipeline health and efficiency. Candidates should be proficient in Java and Spring Boot, experienced in the full soft ...

Senior Java Engineer FiTP (Hybrid Belfast)

Citibank (Switzerland) AG in Belfast is looking for a Java Developer (AVP) to engineer solutions for global finance. This role involves working within the Global Fixed Income Trade Processing Team, focusing on designing and developing complex distributed systems. Candidates should possess strong knowle ...

Trading Connectivity Backend Engineer (Go/Java)

Talos in Greater London is seeking a Software Engineer for their Trading Connectivity team. You will design, develop, and maintain high-performance backend systems that integrate with a vast provider network, ensuring security and scalability. The role demands 1-3 years of experience in software engine ...

Lead Cloud Platform Engineer — Java & Python

JPMorgan Chase & Co. is seeking a Lead Software Engineer for its Cloud Engineering Acceleration team in Greater London. This role involves designing platform services, maintaining production code, and fostering team culture. The ideal candidate should have proficiency in core programming languages, hands-on expe ...

Mobile QA Engineer (Espresso/Java/XCUITest)

Our client are a global consulting company, working on a project in the Payments space, they are on the lookout for a Mobile QA Engineer to come in on a contract basis. Key Skills/Requirements: Testing on Android experience (Kotlin - Espresso) Testing on iOS experience (iOS - Swift ...

Senior Java Engineer – Electronic Trading Tech

Bank of America is looking for a Software Engineer III (Vice President) to join the Bromley office. The role involves working with the Electronic Trading Technology team, enhancing trading platforms, engaging with quantitative traders, and managing all aspects of the development lifecycle. Ideal candidates shoul ...

Java Test Automation & Full‑Stack Engineer

NatWest Group is seeking a Software Engineer, specializing in Development and Automation, located in Edinburgh, United Kingdom. The ideal candidate will excel in designing and implementing robust test automation frameworks while leveraging expertise in Java full-stack development. The position focuses on ensurin ...

Lead Cloud Platform Engineer — Java & Python

JPMorgan Chase & Co. is hiring a Lead Software Engineer in Public Cloud Engineering based in London. You will set architectural direction, guide system design, and drive engineering excellence using core languages like Java, Go, and Python. The role emphasizes cloud-native experience, proactive engagement with A ...

Site Reliability Engineer III Java / Python

Job Description As a Site Reliability Engineer III at JPMorgan Chase within the External Collaboration team, you will lead development and integration of collaboration platforms such as VDRs, Microsoft 365 B2B, Client Portals, and Google Workspace. Site Reliability Engineering at JPMorgan Chase is ...

Sustaining Engineer: Java SME & Production Debugger

Aera Technology, based in Greater London, is seeking a talented Sustaining Engineer to identify and resolve critical production issues. This hands-on role focuses on developing expertise and debugging Enterprise Java applications. Qualified candidates will have a Bachelor’s/Master’s in Computer Science ...

Senior Java Engineer Trading Systems & Execution

Isamcapitalmarkets is seeking a talented Java Developer to join the Helix Technology team in Greater London. The role involves managing the ISAM Helix Trading System, focusing on trade execution and collaboration with brokers to refine algorithmic execution. The ideal candidate will have a degree in a ...

Java Low Latency Systems Engineer (London)

WorksHub is seeking a Java Low-Level/Low Latency Engineer in London, United Kingdom. The ideal applicant will possess a deep understanding of systems-level programming with proficiency in Java, Rust, C, or C++. Experience with manual memory management, concurrency, and multithreading is essential. This full-time ...

Hybrid Java Engineer Monolith Upgrades & Payments

Yorkshire Building Society in Leeds is seeking a Software Development Engineer – Java. This hybrid role involves supporting, maintaining, and developing changes for customer-facing websites using Java/Spring MVC. Responsibilities include designing software, conducting peer reviews, and delivering full stack chan ...

Post Trade Java Engineer: Microservices & Settlements

A global financial services provider in Greater London is seeking a Java Engineer to design and maintain Java applications supporting confirmations and settlements. Responsibilities include developing scalable applications, managing data storage, and integrating data streaming. The role offers a variety of emplo ...

Backend Engineer: Java & .NET, Cloud & Kafka

Sky UK Limited is seeking a Software Engineer based in Greater London to work in a collaborative delivery team. This role involves building and supporting cloud-based services that enhance Sky’s Group Content Platform. Ideal candidates should have experience with Java (Spring) and .NET (C#), along with SQL and N ...

Java Electronic Trading Engineer – Front office

Java Electronic Trading Engineer – Front office London – Hybrid Java, Low Latency, FIX, SBE, Aeron, Linux, Docker, Kubernetes, AWS The company This is an unmissable opportunity for an experienced Java Electronic Trading Engineer to join one of the leading institutional d ...

Senior Java Engineer: Microservices, Cloud & Kafka

JPMorgan Chase & Co. is looking for a Product Engineer in Greater London. You will collaborate with the Product team to develop and deliver software features using Java/Springboot and other technologies. Responsibilities include taking ownership of tasks, ensuring high-quality code, and participating in code rev ...

Senior Java Engineer – FinTech Microservices & Cloud

A leading global financial services firm is seeking an Engineer to join their team in Greater London. The role involves collaborating with the Product team to develop and enhance investment applications using a Java/Springboot stack. The ideal candidate will have experience in delivering high-quality software an ...

FX eTrading Java Engineer VP Level

A leading global bank in Greater London seeks a qualified individual for FX trading systems implementation. The role involves collaborating with trading and quant teams to design system architecture, alongside hands-on technical implementation. Key skills required include a strong understanding of FX, low-latenc ...

Senior Java Engineer Platform Team (London)

ITRS is seeking a Senior Java Software Developer to join their London team. This full time position involves reporting to the Engineering Manager and working within the Platform Team as part of a global Engineering organization. The company, located in Greater London, provides risk mitigation solutions to major ...

Java Engineer: Algorithmic & High Performance Systems

Millennium is seeking a Java Developer to join our high-performing Algorithmic Development team in London. The ideal candidate must possess strong hands-on Java skills with an understanding of concurrent and multi-threaded application environments. This is a full-time role that presents an excellent opportunity ...

Senior Java Search Platform Engineer (Kubernetes)

Elsevier is seeking a Senior Software Engineer I to join their Search Platform team in Greater London. This role focuses on backend search service design and building reliable, cloud-native systems. Ideal candidates have strong backend engineering experience, practical knowledge of search technologies like Elast ...

Staff Backend Java Engineer – Technical Lead

Mindera is looking for a Lead / Staff Backend Java Engineer in London to take on a key technical leadership role. The successful candidate will work closely with architects, product managers, and cross-functional teams to design and implement scalable solutions. This full-time position offers competitive compens ...

Java Release Engineer: Secure Builds & Deployments

Barclays is seeking a Java Software Release Engineer based in Knutsford or Manchester. The role involves managing build and release processes to ensure secure, high-quality changes to Java-based applications. Key responsibilities include collaborating with various teams, adhering to secure coding pract ...

Fintech QA Automation Engineer (Selenium, Java)

Java Script Works is seeking a QA Engineer to develop testing frameworks and collaborate closely with the development team. The ideal candidate will have strong skills in JavaScript, along with expertise in automation tools like Selenium and a solid understanding of Angular.JS. This role is crucial in ...

Senior Java SRE Engineer Cloud & Observability

Capital One (Europe) plc is seeking a Senior Software Development Engineer - SRE in Nottingham. This permanent role focuses on leading engineering initiatives in the Site Reliability Engineering team, optimizing systems, and enhancing monitoring practices. Ideal candidates will have experience in developing prod ...

Cloud Native Backend Engineer (Kotlin/Java)

Whatsoninsheffield is seeking a Backend Software Engineer to design and build scalable cloud-native microservices and APIs. You will collaborate with developers, product owners, and stakeholders, ensuring a high level of service and quality. This hybrid role requires strong experience in Kotlin and/or ...

Senior Java Engineer FinTech Microservices (Hybrid)

Synechron in Sheffield is seeking a Senior Java Developer to design and develop scalable microservices, focusing on financial services. The role requires strong expertise in Core and Advanced Java, Spring Boot microservices, and event-driven systems. Responsibilities include designing high-throughput APIs and ma ...

Hybrid Cloud Backend Engineer — Java & .NET

Sky UK is seeking a Software Engineer to join the Content Platforms team in Osterley. This role focuses on building cloud-based services using Java, Spring, .NET, and AWS. The successful candidate will have experience in backend development and work in an agile environment, collaborating with a high-performing t ...

Full Stack Engineer: Java, React & Cloud

Java Script Works is seeking a Full Stack Engineer in Greater London. The ideal candidate should have substantial hands-on experience with Java (versions 7/8 to current), front-end frameworks like Angular or React, and expertise in cloud development. Key skills include knowledge of the Spring framework, selected ...

Front Office Java Engineer Algo Trading

Group Strategic Analytics (GSA) is part of Group Chief Operation Office (COO) which acts as the bridge between the Bank’s businesses and infrastructure functions to help deliver the efficiency, control, and transformation goals of the Bank. You will join the Quantitative Fixed Income Engineering team w ...

Senior PriceFX Engineer Groovy & Java Integrations

A leading software products firm is seeking a Senior Software Engineer focused on PriceFX implementation. The role involves leading technical implementations, scripting in Groovy, and integrating solutions with Java and Apache Camel. Ideal candidates will have strong problem-solving abilities and a solid backgro ...

Lead Java Engineer for Compliance Platforms

A leading financial services firm in Glasgow is seeking a Lead Software Engineer to oversee a team developing employee compliance applications. The ideal candidate will possess strong knowledge in software development processes, experience with Spring and RESTful APIs, and exceptional leadership skills. The role ...

Adoption Platform Engineer – Java, AWS & Security

A global financial services provider is seeking an Adoption Software Engineer based in Glasgow. You will innovate a Digital Platform capability by modernising their digital estate, focusing on customer experience. Responsibilities include the development of software solutions using Java, collaboration with multi ...

Mission Critical Java Engineer | Secure Microservices

A leading Engineering business in the UK is looking for a Java Software Engineer to design, develop, and maintain secure Java applications and microservices. The role requires strong experience with Java and Spring Boot, alongside a solid understanding of RESTful APIs. You will join a trusted engineering organiz ...

eDV Cleared Java Engineer: Microservices & Cloud

A leading recruitment agency is seeking an eDV-cleared Java Developer to join a skilled engineering team in the UK. The role involves hands-on development of complex software systems utilizing modern DevOps practices. Ideal candidates are experienced in Java, Spring, and CI/CD pipelines, and have a passion for w ...

Senior Java & Python Engineer — Scalable Systems

A leading global financial institution in Bournemouth is looking for an Experienced Software Engineer to join their Global Technology team. You will design and deliver innovative technology products, working within an agile environment. Key requirements include proficiency in Java or Python, experience with soft ...

Cloud Native Backend Engineer (Java/Kotlin)

A global finance leader is seeking a Back-End Engineer in Greater London to design cutting-edge cloud-native microservice architecture applications. Successful candidates will deliver robust technical solutions using Java and Kotlin while collaborating in a dynamic, agile team. Applicants should have experience ...

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    Java Software Engineer Core Java Jobs in United Kingdom Job Search Guide, Trends and Insights