1 to 25 of 86 Permanent Java Jobs in Central London

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This … unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement, and own features ...

Experience: 12+ years in software engineering, with at least 3–5 years in a leadership role. Strong proficiency in [insert relevant tech stack: e.g., Java, .NET, Python, Node.js, React, etc.]. Expertise in system architecture, design patterns, and cloud platforms (AWS, Azure, GCP). Hands-on experience with CI/ ...

this post: 7+ years experience in software engineering and a solid understanding of the software development lifecycle (SDLC). Technical experience with OOAD, SOA, Java, J2EE, Spring, React.js, Node JS, Hibernate, SOAP/REST web services, Spring security, SpringBoot, and AMQP/RabbitMQ. Experience with application servers (Jboss/WebSphere ...

e.g., React, Vue, Angular) and strong JavaScript/TypeScript skills. Solid backend experience with one or more languages/frameworks (e.g., Node.js, Python, Go, Java, Ruby). Experience designing and implementing RESTful APIs or GraphQL services. Strong understanding of databases (SQL and/or NoSQL) and data modeling. Comfortable working ...

policies and participate in audits and vulnerability remediation. Maintain accurate documentation, including topology diagrams, runbooks, and configuration baselines. Support proprietary messaging APIs using C++, Java, Python, and C# programming languages. Provide support for proprietary cache and gateways that integrate applications with the messaging service. Required Skills & Qualifications: 3+ years ...

Senior Java Developer/Software Engineer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing the legacy infrastructure used … custody system, designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Java Developer you will take ownership of building a brand new Futures Trading platform for the UK, primarily using Java with a focus on backend development ...

into user flows Contribute to overall system design: service boundaries, data ownership, scaling, and observability Essential Qualifications: Built modern full-stack applications (Python/Java/Go + React) Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object) Experience with async and bi-directional communication protocols ...

Java Software Engineer/Developer (Java AWS Spring Boot) London/WFH to £90k Are you a backend focussed Java technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets with … designed for today's complex global markets. The company is experiencing great success in the US and is expanding into the UK. As a Java Software Engineer you will join a small team responsible for building a brand new Futures Trading platform for the UK, primarily using Java with ...

Senior Full-Stack Engineer (Java & Python) We are seeking a high-impact Senior Full-Stack Engineer to join a growing technology team for a leading investment house supporting market data services within a regulated, enterprise environment. This role sits at the intersection of data engineering, full-stack development, and business … MUST have 5+ years experience in data or software engineering within financial services or a similar regulated industry. Strong full-stack experience with Python , Java (Spring Boot) , React , SQL, and relational databases. Hands-on experience with modern data engineering tools (e.g. Airflow, Spark, Kafka, dbt, Snowflake or similar). Experience ...

Data Structures, Deign Patterns, Algorithms You have commercial Golang development experience (likely to have a background with other OO languages such as Python, Java, C++ but you must be happy to use Golang going forward) You have a strong knowledge of AWS - they're using AWS SNS & SQS, Amazon ...

organization. Mandatory Skills & Experience • Experience: 8+ years in cloud and AI architecture design, 5+ years in software development. • Technologies: Proficiency in Python, Java (and/or Golang), and Spring; expertise in AWS, Azure, Google Cloud; Kubernetes and containerization. • AI Expertise: Advanced machine learning algorithms, GenAI models (e.g., GPT, BERT, DALL ...

/or multi-cloud set up is essential. Demonstrable basic development or scripting experience in one or more of the following languages: Bash, Python, Java, C#, Rust, Excel VBA Good Linux/network stack knowledge, as well as optimization/tuning Nice to have: Containerization (Docker/Kubernetes ...

validation to responsible, ethics-driven AI practices What we’re looking for: Proven client-facing experience with strong stakeholder management Proficiency across Python or Java, ML frameworks (TensorFlow, PyTorch, scikit-learn), and cloud AI services Knowledge of agentic tools such as LangChain Agents, AutoGPT, and CrewAI, plus familiarity with GenAI ...

Java/Kotlin Team Lead - London - 6 months - Circa £650pd - 3 days pw We are partnered with a tech client who are looking for a Lead Backend Engineer with strong experience in Java and/or Kotlin to take a key technical leadership role within a backend-focused engineering team … proactively propose scalable, secure solutions Influence product and platform decisions through strong technical insight Hands-on Software Development Develop high-quality backend services using Java (17+) and frameworks such as Spring Boot or Micronaut Build resilient, high-throughput services supporting secure transaction processing Design and implement integrations with external systems ...

Java Developer/Software Engineer (AWS React Full Stack) London/WFH to £80k Are you a technologist Java Developer 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 … small team of finance and technology entrepreneurs with a hugely successful track record. As a Java Developer you will join a small team to build systems from the ground up, working across the full technology stack with a focus on designing, developing and deploying cloud-native microservices that form ...

Containerisation/Orchestration with Kubernetes Extensive CI/CD work (ideally with Jenkins, or equivalents) Scripting/coding experience with Python, Bash, Shell or Java Strong knowledge across Automation, Networking, Linux and Security These positions range in salary offering £80-120K, dependant on experience and Seniority, and operates ...

analytics and evaluate applicability to the firm's operations. IT Applications Manager/Applications Manager Knowledge, Sills and Experience: * Proficient in SQL, C#, Python, Java, HTML/CSS, and related development frameworks. * Understanding of API integration, data modelling, and application performance tuning. * Strong project management skills are essential for implementing ...

years in technology advisory in Data Science/AI roles. Hands‐on experience with advanced AI and end‐to‐end solutions. Strong Python/Java skills and familiarity with TensorFlow/PyTorch. Proficient in ML/DL models, databases, ETL, and data pipelines. Experience with cloud (AWS/Azure/ ...

translate theoretical strategies into production-grade code. What You'll Have Polyglot Mastery: Exceptional command of at least one major systems language ( C++ , Rust , Java ) for low-latency components, or Python for data and ML workflows. Distributed Systems Expertise: Deep experience building high-throughput, fault-tolerant systems using modern messaging ...

risk management and its role in organisational resilience. Hands‐on technical experience with APIs, SQL, XML, containers, and programming languages such as Java, Python, Kotlin, or C#. Familiarity with CI/CD pipelines and modern development practices. Rewards & Benefits TCS is consistently voted a Top Employer ...

Lead Software Engineer (Java) – London/Hybrid Are you a Lead Backend Engineer with a strong background in Java and modern backend architecture? In this senior technical leadership role, you will set the technical vision, influence system design, and guide teams in delivering secure, scalable, and high-performing services. While … discipline across teams. Lead design sessions, code reviews, and collaborative technical discussions. Skills & Experience Proven experience as a senior or lead backend engineer with Java (11+) and Spring Boot. Expertise in designing and leading backend architectures for complex systems. Strong understanding of AWS, Kubernetes, and modern microservice-based systems. Experience ...

Title: Java Developer (Electronic Trading Platform - FIC) Contract Type: Outside IR35 Location: London Day Rate: Up to £950 per day Flexible Hybrid working: 1-2 days a week in London City offices Client: Prestigious Investment Bank Industry: Investment Banking Duration: 12 months +. Also open to contract to permanent conversions … Overview: We are seeking an experienced Java Developer to join a high-profile investment banking client in London on a contract basis. The successful candidate will work on an Electronic Trading Platform for the FIC business . This is an exciting opportunity to contribute to the development and integration ...

responsiveness Confident working directly with front-office stakeholders Bachelor's degree in Computer Science, Engineering, or related discipline Desirable Backend experience in Java or C# Experience working in electronic FX, market making, or algo trading Familiarity with AI-assisted development tools while maintaining engineering standards Strong attention to detail ...

orchestration, consumption) Cloud platform experience (AWS, Azure or GCP) Strategic architecture capability including roadmaps, trade-offs, and risk management Strong programming skills in Python, Java or Scala Demonstrated experience managing and developing technical teams Desirable Data governance, lineage, provenance, and master data management Technology evaluation and product selection Event-driven ...

goals Provide regular reporting to the Head of Technology on application performance, risk status, and strategic progress. Skills Required Proficient in SQL, C#, Python, Java, HTML/CSS, and related development frameworks. Understanding of API integration, data modelling, and application performance tuning. Strong project management skills are essential for implementing ...