1 to 25 of 33 Permanent Java Engineer Jobs in London

Senior Software Engineer: Java page is loaded Senior Software Engineer: Java Apply locations Cannon Street, London time type Full time posted on Posted 3 Days Ago job requisition id R_14987 Job Title Senior Software Engineer: Java Job Description So, who are we? Hello, we're IG Group. We are a publicly-traded FTSE250 … IG's hedging providers (banks, liquidity providers, brokers) to allow IG to hedge and IG's clients to trade. Your role in the Team's Success As a Senior Engineer joining our Direct Market Access (DMA) team, you'll be part of a collaborative and dynamic group that values technical excellence, continuous improvement and growth. You'll bring in … large and complex system Maintain the pieces of infrastructure required to build and verify our software What you'll need for this role Key Qualification Requirements: Demonstrable understanding of Java, Spring/Spring Boot, Maven and SQL Familiarity with distributed messaging and communications technologies for ensuring reliable and efficient data exchange Practised user of Linux command line and scripting More ❯

Java Software Engineer - Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, MongoDB, Docker/Kubernetes, Real-time, TDD/BDD, Payments A Java Engineer with a background in finance/payments and experience working on distributed real-time systems is sought after by a global Fintech based in South West London. This organisation specialises in … providing high performance technology solutions to global financial institutions (including several Investment Banks), primarily to augment their payments capabilities. As a Senior Engineer, you will join the core engineering team working on the development of their real-time payments processing platform, using a primary tech stack of Java 17, Spring Boot and Akka. You will contribute from both … with a heavy focus on Pair Programming and TDD, so are looking for people from similar environments. To be successful, you will demonstrate: A strong background in hands-on Java engineering, currently working with Java 11+ Indepth knowledge of microservices architecture and usage of Spring/Spring Boot Experience developing distributed, real-time applications with Kafka and the More ❯

Java Engineer Application Deadline: 31 July 2025 Department: Software Engineering Employment Type: Permanent Location: London (Hybrid) Compensation: £40,000 - £85,000/year Description Please note: For this role it is essential that you hold an active, or recently active SC clearance, and are willing and eligible to obtain a DV clearance. This role requires 3 days per … sector, we focus our efforts on improving the working lives of organisations doing social good across the UK. Who are we hiring? We are currently looking for an experienced Java Engineer with an active, or recently active SC security clearance to join one of our delivery teams working with customers based in central London. Your role at Gemba … systems, using a variety of modern technologies and best practices to help produce reliable, secure, and scalable solutions. Your skills and experience Applicants should have experience of the following: Java with Springboot Kubernetes Any experience of the following is desirable: Elastic/Opensearch Helm React AWS Go Why join Gemba? Gemba is built upon four core values that we More ❯

Java Full Stack Software Engineer page is loaded Java Full Stack Software Engineer Apply locations United Kingdom (Remote or Hybrid) time type Full time posted on Posted 3 Days Ago job requisition id JR101227 It's fun to work in a company where people truly BELIEVE in what they're doing! We're committed to bringing … Weather Obsess over Customer Success Work the Problem Be Curious Own the Outcome Respect Each Other YOUR IMPACT We are seeking a highly skilled and passionate Full Stack Software Engineer with a strong focus on Java to join our growing engineering team. In this role, you will be instrumental in designing, developing, and maintaining robust and scalable full … to deployment, collaborating closely with product managers, designers, and other engineers to deliver high-quality, impactful solutions. Design, develop, and implement highly performant and scalable full-stack applications using Java and related technologies. Build and maintain robust back-end services, APIs, and microservices. Develop responsive and intuitive front-end user interfaces. Collaborate with product management to understand requirements and More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your opportunity … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your opportunity … secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Senior Java Engineer - Low-Level Systems | High-Performance Architecture | Hybrid London I'm working with a leading financial technology organisation building ultra-low latency systems at scale, and we're looking for a Senior Java Engineer with a strong grounding in low-level systems programming . This is an opportunity to join a high-calibre team … operate in the microsecond range and demand deep OS, networking, and concurrency knowledge . What You'll Be Working On: Designing and developing low-latency, high-throughput microservices in Java Building and refining core components of a proprietary event-driven framework Working closely with architects, FPGA and infrastructure engineers to optimise performance across the stack Developing systems with a … focus on resilience, fault-tolerance, and scalability Driving performance improvements with hardware-aware optimisations and kernel-bypass techniques What We're Looking For: Deep understanding of systems-level programming (Java and/or Rust, C, C++) Experience with manual memory management , concurrency , and multithreading Familiarity with Linux internals , system calls, and networking Bonus points for experience with: Kernel bypass More ❯

Senior Java Engineer fastest growing tech company £75k - £90k Java, Python, Gradle, Grafana, Gitland, CI/CD, Spring, Openshift, Junit Want to work for the fastest growing tech company with a staggering growth of 182% across 3 years? Want to be part of a group that has landed multi-million-pound contract with the government agencies? Perhaps … a team that's all about pushing the boundaries and innovating. Not just code, but how they work, think and deliver into their world-renowned clients. As a Senior Java Developer, you'll be building modern, scalable systems that support everything from payment services to customer-facing digital products. You'll be working within a team that's passionate … about improving how software gets built and delivered. From tightening up data integrity to enhancing automated testing in both Java and Python, new joiners will be involved in projects that truly elevate product quality. You'll also be exposed to the DevOps side because the developers actively help to maintain smooth CI/CD processes using gitlab while keeping More ❯

Senior Java Engineer | #1 fastest growing tech company | £75k - £90kJava, Python, Gradle, Grafana, Gitland, CI/CD, Spring, Openshift, JunitWant to work for the #1 fastest growing tech company with a staggering growth of 182% across 3 years Want to be part of a group that has landed multi-million-pound contract with the government agencies Perhaps, you … with a team that’s all about pushing the boundaries and innovating. Not just code, but how they work, think and deliver into their world-renowned clients.As a Senior Java Developer, you’ll be building modern, scalable systems that support everything from payment services to customer-facing digital products.You’ll be working within a team that’s passionate about … improving how software gets built and delivered. From tightening up data integrity to enhancing automated testing in both Java and Python, new joiners will be involved in projects that truly elevate product quality.You’ll also be exposed to the DevOps side because the developers actively help to maintain smooth CI/CD processes using gitlab while keeping systems healthy More ❯

At Mindera, we craft software with people we love. We're looking for a Staff Java Engineer to join our growing company - you'll play a key technical leadership role, working closely with architects, product managers, and cross-functional teams to design and implement scalable, reliable, and secure backend systems. Please note: This position requires you to work … involve? Lead technical deep dives and knowledge sharing in the teams, anticipating challenges and proposing solutions Start influencing product and business decisions Hands-on Software Development: Write high-quality Java code using frameworks such as Spring Boot or Micronaut. Build robust services that support secure, high-volume payment transactions. Develop integrations with acquiring banks, payment gateways, and fraud detection … Continuous Improvement: Continuously improve platform reliability, performance, and cost-efficiency. Stay up-to-date with technology trends and proactively identify innovation opportunities. Proven experience as a Staff or Lead Engineer in backend-heavy environments in teams having multiple levels of engineering. Strong experience in Java 17+, ideally with experience in using Spring Boot or Micronaut. Hands-on knowledge More ❯

Java Engineer - Equity Volatility The successful candidate will join a global team that designs and develops Equities Volatility Risk, PnL, and Market data systems. The candidate will work hands-on with other developers, QA, and production support teams. The team interacts with key stakeholders such as Portfolio Managers, Middle Office, and Risk Managers. Must be a very strong … time equities pricing and risk systems Potentially code in and learn UI technologies Write documentation Test code using approved frameworks Qualifications/Skills Minimum of 5 years' experience with Java backend development Deep understanding of concurrent, multi-threaded application environments Expertise in Object-Oriented design, Design Patterns, Unit & Integration testing Experience with distributed caching and replication technologies Experience with More ❯

We are recruiting for a Full Stack Java Engineer for a 6 month fixed term contract. Mostly remote with ad hoc travel to London. Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We've been helping organisations build better digital products and stronger digital … fulfil our mission to close the world's digital skills gap. What you'll bring to the table: Solid development experience working in a commercial environment, agreat understanding of Java and Spring Boot, and wider experience in different tools and frameworks and across the stack. AWS experience (SNS, SQS, S3, DocumentDB, etc) Kubernetes experience is desirable An enthusiasm for … working with agile methodologies. Experience dealing with challenges from stakeholders on technical issues and influencing technical decisions in the team. Understanding and ownership of best practice as a Senior Engineer (eg. TDD, SOLID, XP) Experience of guiding and supporting junior and mid-level engineers. Working knowledge of CI/CD practices and deployments. Experience of writing effective documentation and More ❯

per annum + Bonus and Benefits Contact email: Job ref: LLJ/27 Low Latency Java Engineer - Cross Asset A global hedge fund is looking to hire Low Latency Java engineers to join a high-impact team driving the next generation of low latency trading platforms. You'll be part of a major multi-year effort to More ❯

Backend Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Backend Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve … social care for all by using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Backend Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot … liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Backend Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Backend Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve … social care for all by using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Backend Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot … liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … social care for all by using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Staff Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot … liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

About The Role Job Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves mentoring junior engineers, collaborating with cross-functional teams, and driving … to non-technical stakeholders. About You Professional knowledge and experience Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Significant hands on experience with Java, Spring Boot and Microservices. Strong understanding of Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency in one or more programming languages (e.g., Python … Java, JavaScript) and experience with software architecture patterns. Experience with cloud platforms (e.g., AWS, Azure, GCP) and infrastructure as code. Familiarity with CI/CD pipelines, automated testing, and modern software development practices. Knowledge of technologies such as microservices, containerisation (Docker, Kubernetes), or serverless architecture. Awareness of principles like well architected and secure by design Desirable Previous experience in More ❯

Job Role : Java Fullstack Engineer Job Type : Permanent Location : London, UK Work Mode : Hybrid Job Description You will be joining the innovative Information Security Cybertech Engineering team as a full stack software engineer in a global team responsible for developing web applications (Java/Angular), data engineering (Python) and solutions with third party products. You will … Experience writing complex SQL queries (Sybase advantageous). Proficient with UNIX/LINUX operating systems/commands. Understanding of API Services (SOAP, REST, Graph). Programming Language: Proficient in Java EE o with OpenJDK o with Spring 4.0+ Framework o with Spring Boot/Wildfly web servers (or similar) o with Angular 14+ More ❯

Senior Backend Engineer - Front Office Brevan Howard Asset Management is one of the leading absolute return/hedge fund managers, overseeing assets on behalf of institutional investors from around the world, including pension funds, endowments, insurance companies, government agencies, private banks, and fund of funds. Brevan Howard was founded in 2002 and launched its flagship global macro strategy in … management, operational robustness, and investment performance. The firm's main hubs are in London, Jersey, Geneva, New York, Austin, Hong Kong, Singapore, and Abu Dhabi. As a Senior Backend Engineer - Front Office , you will be responsible for building out the next generation of systems using the latest languages and quantitative techniques. The successful applicant will join the Merlin team … ROLES AND RESPONSIBILITIES Real-time Derived Data and Analytics Work closely with portfolio managers and Quants to expand our derived data and analytics universe. Contribute to complex low latency Java codebase. Understand Quant library interface and work with Quants to validate deliverables. API Development for Analytics and Data: Work closely with portfolio managers and quant devs to develop and More ❯

Requirements: Minimum of 3 years of experience in Java 17 Proficiency in Spring/Spring Boot Experience with noSQL databases, particularly DocumentDB (MongoDB compatible) Familiarity with Gradle and design patterns Knowledge of standards Technologies: AWS Git Gradle Java MongoDB NoSQL REST Spring Spring Boot Cloud Terraform TypeScript Additional Information: As a Software Engineer in Transfers, your primary More ❯

We are looking for a Server-Side Java/AWS engineer to join a Full-Stack team in Data Engineering embracing new ways of working ( NWoW ) in the Global Investments Financial Systems (GIFS) division. We are rapidly expanding our European technology presence, so this is an exciting opportunity to join the team and help grow and influence team … direction, whilst learning about the Investment Management apparatus at Vanguard. The role involves working with Vanguard's funds data and using leading technologies with Cloud Native architecture - Java (Springboot), AWS services (IAM, S3, ECS, EMR, Lambda, Athena, DynamoDb, etc.) and Python. The team uses agile methodologies and operates a continuous delivery pipeline, deploying daily. Vanguard is one of the … s largest investment management companies, with around 380 funds and ETFs, operating in 19 locations worldwide with about 18,800 crew members. We seek a candidate with experience implementing Java micro-services for enterprise scale and a solid understanding of AWS core services. Experience with Python micro-services is preferable but not mandatory. Knowledge of the Buy-side and More ❯

dynamic culture - with a focus on internal promotion and developing our people. Scope of Role The Apps team in London is expanding and we are looking for a senior Java developer with interest and experience in system monitoring, time-series visualisation/analysis, or similar. We are looking for someone who can take an active and leading role in … work directly with the frontend developers and stakeholders to drive the product forward. You will work with the wider applications team, reporting into the Apps Engineering Manager. As an engineer you will be hybrid, with 2 days per week in the London office. As a Senior Software Engineer, you will: Evolve solutions based on feedback. Collaborate with the More ❯

involved right through to delivering the code to the customer A desire to build up and see others succeed, rather than wanting to be the Hero We believe every engineer should have a fundamental understanding of development, infrastructure, and testing and therefore you'll need at least some of these skills to help you pick the role up quickly. … provide a healthy self-development budget you can use to grow in the areas mentioned below, or any other of your choosing! The must haves: Fundamental coding experience in Java plus more than one widely used language type i.e. Python, C#, TypeScript etc Experience working at a Technical Lead level Plus at least one of these: Experience working within More ❯

and we care more about aptitude and attitude than specific experience or qualifications. We are very open about how we deliver software. For the most part we code in Java, but you need not be an expert when you join us! We believe in clean coding, simple solutions, automated testing and continuous deployment. If you care enough to find … The main part of our Tech Stack is listed below, we don't ask that you have experience in all of this, but if you do, that's great! Java, which makes up the majority of our backend codebase AWS & GCP - we're cloud-native Microservice based architecture Kubernetes (EKS) TeamCity for CI/CD (lots of team are More ❯

and we expect our leaders to flex where they work based on the needs of the company and their teams. The Role We are looking for a Senior Software Engineer to join us to help us build, enhance and scale our Protection Platform product. The Protection Platform lives within a modern tech ecosystem: Hosted entirely in the cloud (AWS … utilising products such as EKS, RDS, DynamoDB, EventBridge and S3. All our applications are JVM based with the majority running on Java 21. We're in the process of moving our backend services to Spring Boot. We've invested heavily in our DataDog integration to bring world class observability and monitoring to our systems. We've recently moved to … through code reviews, pairing, and knowledge sharing-helping to foster a culture of learning and ownership. What type of person fits the role You're a well-rounded software engineer who sees writing code as just one part of building great software. You care about solving real problems, not just shipping features, and you think critically about the trade More ❯