1 to 25 of 37 Java Jobs in the City of London

and execution of unimpactful deployments. Maintain and support Live systems. Optimise delivery patterns. Maintain COTS (Commercial off the shelf) products integrated within Live systems. Required Skills & Experience: C#/java, .NET Core Containerisation (Docker, Kubernetes, OpenShift) xUnit Agile working practices CI/CD tooling Scripting experience (Python, Perl, Bash, etc.) ELK (Elastic stack) JavaScript Cypress Linux experience Search engine technology More ❯

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 ❯

including Azure Functions, App Services, AKS, and Logic Apps Hands-on experience with Azure Cosmos DB including query optimisation and throughput management Proficiency with Cosmos DB SDKs (e.g., .NET, Java, Python, Node.js) Experience with SQL API and familiarity with other APIs Strong understanding of partitioning, indexing, and consistency levels Experience with Git, version control, and continuous integration tools Desirable: Advanced More ❯

and attribute-based access controls - Cryptographic protocols and secure key lifecycle management - Securing microservices, APIs, and DevSecOps best practices Skilled in penetration testing and hands-on coding with JavaScript, Java, or Python Strong understanding of vulnerability scanning, remediation, and vendor management Collaborative mindset with the ability to partner across engineering, security, and product teams Desirable Skills: Hands-on configuration, deployment More ❯

problem solving skills You're comfortable taking ownership of projects and mentoring more junior team members You have strong TypeScript skills, combined with any backend programming language (e.g. Python, Java, C++, C#) You're happy to work with the following tech stack (you don't need experience with all): Elixir, Ember, Elm, Phoenix, LiveView, Python, PostgreSQL, AWS, Docker You have 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 ❯

Exposure to financial services - Hands on experience with UiPath Test Suite - Automation strategies and automation test frameworks - CI/CD tooling, DevOps - Proficiency in one of the OO Languages - Java, .Net etc - Good stakeholder management, analysis skills and communication skills Responsibilities - The Role: You will be responsible for developing a Proof of Concept for UiPath.This role involves rapid prototyping, tool More ❯

Full Stack Developer/Software Engineer (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 … 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 … communication skills Ideally you will have a good understanding of Financial Services/Open Banking What's in it for you: As a Full Stack Developer/Software Engineer (Java AWS React) you will receive: Up to £110k Significant stock options Apply now to find out more about this Full Stack Developer/Software Engineer (Java AWS React) opportunity. At 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 ❯

and securely, improving response times and overall public safety. Required Skills Data Stage, RedShift, QuickSight, S3 data migration/ETL both batch and real time data warehouse development DevSecOps Java SQL relational databases GitHub/lab experience Nice to have: Data quality xml AWS Data Specialty certification All profiles will be reviewed against the required skills and experience. Due to More ❯

as part of a move from Calypso v17 to Calypso v18. What you'll need to succeed Recent Calypso experience (v16 onwards) Preferably experience working on upgrades Experienced in Java Devops experience (Ansible, Terraform, Git) What you'll get in return An exciting opportunity to join an international organisation working with a major financial services organisation. Furthermore, a competitive day More ❯

ACME, EJBCA etc as well as define CAB compliant x.509 certificate profiles ( from scratch ) for multiple frameworks ( i.e. WebTrust/ETSI/etc) Experience in software development, preferably in Java and Python desirable . In depth experience with key ceremonies Experience in system development lifecycle and system integration is desirable. Proficiency in cryptography programming, nShield HSM (Hardware Security Module) Proficient More ❯

Role: Backend Developer Contract: 6 months Location: Canary Wharf, London Working model: Hybrid - 3 days onsite We're looking for a talented Backend developer with strong Java and Node.js/TypeScript experience to join a dynamic development team within a leading financial services organisation. This role is ideal for someone who enjoys working across both backend development and infrastructure, collaborating … with centralised DevOps teams, and contributing to modern, large-scale financial services platforms. What You'll Do Maintain and enhance scalable back-end applications using Java, Node.js, and TypeScript. Lead the migration of existing Node.js systems into Java to align with bank-wide infrastructure strategy. Work closely with DevOps teams, utilising Docker and Kubernetes for containerisation and deployments. Build and … integration tests to ensure high code quality. Collaborate with cross-functional teams to define, design, and deliver new features. What We're Looking For 5+ years' experience as a Java & Node.js/TypeScript developer. Hands-on experience with Docker, Kubernetes, GitHub Actions (CI/CD). Strong knowledge of SQL databases. Proven track record writing unit & integration tests. Strong problem 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 ❯

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 ❯

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 ❯

Remote with rare travel to site in London My client, a government body are looking for a Senior SDET to join their fast-paced team with some experience in Java coding (OOP, SOLID), Building automation platforms and frameworks. This role will include but is not limited to: Working with the product team to define the acceptance criteria and testing DOD … ensure test best practice, continual improvements and appropriate standards are adhered to Must have excellent written and verbal communication skills, experience working in Agile delivery teams using TDD with Java and be able to work autonomously. Experience of PACT frameworks that enable Consumer Driven Contract testing is desirable Understanding of CI/CD pipelines and their importance in Automation Testing More ❯

will have good solid experience of having work on Genesys Clould projects. The Technical Architect will have experience in; - Genesys Cloud - Genesys Engage - AI/Ml - CRM - API Integration - Java/Pyton Experience Technical Architect - Genesys Cloud - 6 Months - Inside IR35 Randstad Technologies is acting as an Employment Business in relation to this vacancy. 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 ❯