1 to 25 of 26 Permanent Java Jobs in the City of London

across the business to deliver value-driven solutions What were looking for: London/Lloyd's Market experience is essential Strong programming skills in Python and SQL; knowledge of Java or Scala is a plus Solid experience with relational databases and data modelling (Data Vault, Dimensional) Proficiency with ETL tools and cloud platforms (AWS, Azure or GCP) Experience working in More ❯

Foundry expertise or transferable, client facing data engineering experience with large-scale data platforms such as: Snowflake, Databricks, AWS Glue/Redshift, Google BigQuery Software engineering skills in Python, Java, or TypeScript/React. Strong data modelling, pipeline development, and API design experience. Excellent problem-solving and communication skills. Why This Role Stands Out Impactful work at the intersection of More ❯

in a collaborative, team-driven environment. Clear communication and a positive, empathetic approach set you apart. What Youll Bring 5+ years of software development with strongly typed languages (Go, Java, etc.), including 2+ years of commercial Golang experience Strong experience writing well-tested code Proven ability to take a User Story from refinement through to delivery within a sprint Solid More ❯

use cases Collaborate with product teams to identify opportunities for AI integration that improve user experience and operational efficiency. Develop clean, modular, and scalable codebases using languages like Python, Java, or C#. Architect and deploy microservices that expose AI capabilities via RESTful APIs or cloud-native platforms (e.g., Azure, AWS). Ensure high availability and fault tolerance of AI services More ❯

Company Overview: A leading financial services firm operating at the intersection of traditional finance and digital assets. It offers institutional-grade trading, asset management, and infrastructure solutions, while also investing in blockchain technology and AI-powered data centers. Known for More ❯

Java Engineer London – Hybrid (4 days a week onsite) Up to £65,000 + benefits Check out the role overview below If you are confident you have got the right skills and experience, apply today. We’re working with a market-leading trading business that has redefined how technology powers access to alternative assets. With a global presence and an … award-winning platform, they combine deep domain expertise with cutting-edge software to deliver a best-in-class service to their clients. They are looking for a Java Engineer to join their growing engineering team and help build the next generation of their trading platform. This is a unique opportunity to work in a fast-moving, product-focused environment where … technology is central to the company’s continued growth and market leadership. Responsibilities as a Java Engineer: Build and enhance core backend services in Java and Spring Boot Contribute to the architecture and development of a new trading platform Deploy and scale applications in a cloud environment (Azure, or other cloud platforms) Work across the stack when needed, including supporting More ❯

salaries, our client offers an excellent working environment. Previous experience within the sports trading industry would be beneficial. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science (big data, deep learning More ❯

implementing AWS Well Architected Security pillar. Breadth of knowledge of cloud-based IAM/PAM and authentication concepts. Strong proficiency in coding/scripting/development languages – Python, Terraform, Java ideally Experience building and fine-tuning security tooling to be deployed in cloud environments. More ❯

Software Engineer/Developer (Java AWS React) London/WFH to £110k Are you a technologist looking for an opportunity to be part of something big from the start? You could be progressing your career in an impactful role at a newly established Fintech start-up, set up by a small team of finance and technology entrepreneurs with a hugely … time, meeting up with colleagues in London; as the company grows there will likely be some in office requirements but with lots of flexibility. About you: You have strong Java, AWS and Kubernetes skills and also have a good appreciation of user interface/front end development using React or Tailwind CSS You have a strong knowledge of modern software … with great communication skills Ideally you will have a good understanding of Financial Services/Open Banking What's in it for you: As a Software Engineer/Developer (Java AWS React) you will receive: Up to £110k Significant stock options Apply now to find out more about this Software Engineer/Developer (Java AWS React) opportunity. At Client Server More ❯

maintainability Driving Agile delivery and mentoring junior engineers Sharing insights and innovations across the wider tech community Tech You'll Work With: AWS (SDK, CDK, Lambda, Step Functions) Node.js Java (Spring Boot) Terraform/CloudFormation SQL, GraphQL Postgres, DynamoDB (nice to have) Kubernetes, GitHub Actions, Quarkus (nice to have) What You'll Bring: Proven experience building distributed systems and serverless More ❯

Pay: £70,000.00-£80,000.00 per year Job description: Senior Java Engineer London Salary: £70,000 - 80,000 Bonus: TBC This is a hybrid role that requires 3 days a week office attendance About the Company An exciting opportunity has arisen for a Senior Java Engineer to be part of a highly innovative forward thinking online challenger bank start-up … team building up the functionality of a bespoke best-of-breed banking technology, a single platform delivering loan issue, card issue and recovery. Were looking for an exceptional Senior Java Engineer who will work closely with the Java Team Lead & CTO as we scale up and modernise our business processes and tech stack. The role includes hands-on development, mentoring … well as working with the CTO to define the technical architecture and integration requirements for the solution. This is a great opportunity for a leading edge, innovative, high-class Java developer to enter the company at a time when you can make your mark on the development of the company and contribute to the quality work that has already been More ❯

and advanced analytics techniques to the Cybersecurity domain and its associated datasets Full Stack Engineering and custom security software development experience with proficiency in programming languages such as Python, Java, C#, or similar preferred. This role can be based in Sheffield or Birmingham or London More ❯

Lead Java Developer/Backend Software Engineer London to £135k Do you have advanced Java technical knowledge combined with team leadership skills? You could be progressing your career at the Investment Management arm of a global bank. As a Lead Java Developer you will head up a small, globally distributed team responsible for writing production quality Java code used for … Location/WFH: You'll be based in the London office and have flexibility to work from home once a week. About you: You have a deep knowledge of Java including multithreading You have team leadership experience, including technical project leadership, code reviews, 1-2-1s, developing others You have experience in a Capital Markets environment, FX preferred You … You have excellent communication and collaboration skills You are degree educated in Computer Science or similar technical or numerate discipline What's in it for you: As a Lead Java Developer/Backend Software Engineer you will receive a competitive Salary to £135k Bonus Pension One day work from home per week Continuous training and career progression opportunities Apply now More ❯

Senior Java Software Engineer/Team Lead (FX Trading) London to £135k Do you have advanced Java technical knowledge combined with team leadership skills and a strong knowledge of Capital Markets? You could be progressing your career at the Investment Management arm of a global bank. As a Senior Java Software Engineer/Team Lead you will head up a … small, globally distributed team responsible for writing production quality Java code used for pricing and hedging FX instruments and overseeing the algorithms' performance intraday. You'll spearhead a project to modernise the FX Risk and post-trade platform to a modern microservices environment, collaborating with the business and providing technical guidance, code reviews and 1-2-1s to develop … Location/WFH: You'll be based in the London office and have flexibility to work from home once a week. About you: You have a deep knowledge of Java including multithreading You have team leadership experience, including technical project leadership, code reviews, 1-2-1s, developing others You have experience in a Capital Markets environment, FX preferred You More ❯

post-placement follow-up Build and maintain strong client relationships, understanding their hiring needs and providing market insights Source and screen candidates for technical roles (SAP, ERP, CRM, DevOps, Java, Cloud, Digital, Blockchain, etc.) Negotiate offers and manage the end-to-end placement process Meet and exceed agreed KPIs and revenue targets Requirements Minimum 12 months 360 recruitment experience (tech More ❯

Fidessa Developer (Java Spring Boot API) London to £135k Do you have strong Java coding skills combined with experience of developing on the Fidessa order management system? You could be progressing your career at the Investment Management arm of a global bank, gaining an indepth knowledge of Capital Markets. As a Fidessa Developer you will design and develop new features … Location/WFH: You'll be based in the London office and have flexibility to work from home once a week. About you: You have a deep knowledge of Java including Spring Boot and APIs You have strong experience of developing on Fidessa You have an understanding of Capital Markets You have excellent communication and collaboration skills You are degree … educated in Computer Science or similar technical or numerate discipline What's in it for you: As a Fidessa Developer (Java Spring Boot API) you will receive a competitive Salary to £135k Bonus Pension One day work from home per week Continuous training and career progression opportunities Apply now to find out more about this Fidessa Developer (Java Spring Boot More ❯

currently going through a period of exponential growth and are enjoying record profits The business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency … alerting, and fault tolerance SKILL/EXPERIENCE REQUIRED: Expertise in market-making or algorithmic trading, including deep understanding of order book dynamics and pricing techniques Proven track record in Java programming, specifically in building fast, low-latency trading systems Strong familiarity with market data and order execution protocols (e.g. FIX, binary, or custom APIs) Hands-on experience with JVM tuning More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and delight customers by delivering inbound experiences that are relevant … helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created, and how it should be built. Within their setup those decisions are … roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is freedom and openness More ❯

A leading global investment bank is seeking a Java Developer/eTrading Strategist to join its London Rates eTrading team . This front-office role focuses on designing, building, and optimising low-latency Java trading systems that power the bank's global Rates business. The Role You will engineer high-performance Java components for algorithmic execution, pricing, and market connectivity. … with traders, quants, and technologists, you'll deliver production-ready eTrading solutions with a focus on latency, scalability, and resilience . Key Responsibilities Design and implement low-latency, multithreaded Java applications for Rates eTrading. Develop and optimise execution algorithms, smart order routers, and pricing engines . Profile and tune Java applications for GC optimisation, lock contention, and throughput . Implement … real-time monitoring, logging, and alerting frameworks . Partner with quants to integrate pricing models into Java-based trading systems . Conduct rigorous code reviews, testing, and benchmarking . Candidate Profile Degree in Computer Science, Engineering, Mathematics , or related field. 10+ years' experience in Java development within low-latency trading systems . Deep knowledge of Java concurrency, GC tuning, memory More ❯

hands-on experience with High-Frequency Trading (HFT) platforms while contributing directly to the continued growth and success of the business. KEY RESPONSIBILITIES: Design, develop, and maintain high-performance Java applications and components, ensuring code quality, efficiency, and compliance with best practices. Build a thorough understanding of end-to-end risk data flows to support reliable and compliant system operations. … maintainability. REQUIRED - SKILLS/EXPERIENCE: Proven experience within traditional financial markets (e.g., spot FX, rates, or equities). Minimum of 5 years hands-on software development experience in Core Java (J2SE). Strong understanding of object-oriented programming principles, with expertise in applying design patterns to deliver scalable, performant, and secure solutions. Demonstrated ability to write clean, efficient, and maintainable More ❯

Software Engineer Hybrid Working - London High Street Banking Lorien's leading banking client is looking for an experienced Software Engineer with strong experience of working with Java, Kafka, ReactJS and AWS to join the existing team on an initial 6month contract. This role is based in London. This role will be Inside IR35 Via Umbrella Working in a Hybrid Model … on reuse, adding value to the business and aligning to bank standards, patterns and guardrails. Experience of working within Financial Services/High Street Banking Strong Skills working with: Java 17 Kafka AWS ReactJS Liaises with business stakeholders, principal Engineers, architects in the domain to shape and successfully deliver projects Strong understanding of software development principles, design patterns, and best More ❯

design solutions being pioneered within the Guidewire Cloud. This is a brand-new team with lots of scope for development and growth. You should have strong development skills in Java and GOSU as well as stakeholder skills to help the organisation navigate the migration and onboard Guidewire. Key Responsibilities: Leadership : Leading the development, design, architecture, integration, and customisation of Guidewire … and work closely with the Scrum and broader software teams. Requirements: ACE Certified in Guidewire Experience onboarding and integrating Guidewire for a specialty insurer Proficiency in coding with GOSU, Java, C#, or Python SQL and other relational database experience, along with supporting database applications CI/CD and DevOps experience for test automation and cloud deployment Why Join this business More ❯

Tech stack AWS (Core services - EC2, RDS, S3, IAM, etc.) Configuration Management Ansible Monitoring and Observability Grafana, Prometheus Kubernetes (building and managing production clusters) Terraform (IaC provisioning) Python or Java (scripting, automation) GitHub Actions (CI/CD pipelines) What They’re Looking For Experience in AWS cloud infrastructure (ideally in a regulated or high-traffic environment) Previous experience working with … specifically with EKS. Solid IaC experience with Terraform. Experience with containerisation (Docker, Helm) and CI/CD (GitHub Actions or similar) Solid scripting/Automation experience with Python or Java A good communicator who enjoys working collaboratively across product and engineering The client is willing to take someone that doesn't have all the skills and provide an environment to More ❯

pre-sales solutioning process, from discovery and scoping through to solution design, proposals, and client presentations. Design and present solutions for application modernisation (for example, moving from 3-tier Java architectures or Oracle platforms to modern cloud-native platforms). Build propositions around cloud solutions (Azure, AWS, GCP) and AI-enabled software engineering (AI in coding, automation, testing). Collaborate … differentiated. Influence senior client stakeholders, acting as a trusted advisor. Candidate Profile Proven experience as a Solution Architect in a consulting or pre-sales environment. Strong software development background (Java, Oracle, cloud-native). Hands-on experience in application modernisation and migrating clients from legacy estates to modern platforms. Broad cloud expertise across Azure, AWS, or GCP. Strong communication and More ❯

will get the chance to work along side some of the best SDETs and software engineers that the industry has to offer whilst aiding in the development of their Java platforms!! If you are a tech driven and enthusiastic individual this is the role for you!! Requirements: Strong experience in automation testing - building and implementing frameworks etc Strong experience working … with Java/C# Experience with JavaScript Experience working in capital markets finance Experience with performance testing If this sounds like you then please do not hesitate to reach out More ❯