1 to 25 of 64 Permanent Java Jobs in Central London

Java Technical Lead Location: London (Hybrid - 2 days on-site) Salary: Up to £110k + Benefits The Role We're looking for a Java Tech Lead to join a high-performing tech consultancy delivering complex, business-critical systems for enterprise and scale-up clients. You'll take technical ownership … hands-on leadership role combining architecture, engineering excellence, and people leadership in a modern, agile consultancy environment. Responsibilities Lead the design and development of Java-based systems across multiple client projects Set technical direction, standards, and best practices Act as a hands-on technical leader, contributing high-quality code Mentor ...

Tier Investment bank requires an experienced hands-on Java developer and technical architect with deep expertise in real-time third-party payments, high-throughput zero-downtime systems, and highly available, global-scale internet-facing APIs. This role is central to scaling the TFX technology platform for major retail clients … maintaining software solutions that support business needs. What You'll Do In The Role Act as a senior individual contributor who combines hands-on Java development with architectural leadership, remaining close to implementation and setting the technical standard through design, code-level guidance, and practical problem solving. Design, build ...

scripting. Ideally someone who has contributed to larger software projects or built maintainable platform/backend tooling in a language such as Python, Go, Java, TypeScript, or similar. Comfortable using modern AI-assisted engineering workflows, including agentic coding tools and LLM-based automation. Familiarity with concepts such as MCP servers ...

Java Developer – · Over 9-12+ years of experience in Java development, with a focus on microservices architecture. Responsibilities - · Lead the design, development, and deployment of microservices using Java and Spring Boot. · Develop and maintain scalable, high-performance microservices. · Integrate microservices with various databases, APIs, and third-party services. · Ensure … through unit testing, code reviews, and continuous integration. · Identify and resolve performance issues, bugs, and other technical challenges. · Create and maintain technical documentation for Java microservices architecture and design. Skill set · Java Proficiency: Proficiency and command of Java, including object-oriented programming, design patterns, and core APIs (collections, streams, concurrency ...

with Terraform, alongside CI/CD and Automation work Background in Software Engineering, comfortable coding with an OO language (ideally Python, Go or Java) Previous experience working in Finance or Regulated environments This position can offer £650-750 p/day, inside IR35, for an initial 6 month contract ...

8+ years of industry experience with a solid understanding of engineering, infrastructure and ML best practices. Strong coding skills with Go or JAVA Design and help develop systems that serve recommendations to over 300 million users Drive engineering roadmap creation and execution, specifically around feed ranking and recall oriented candidate ...

testing. Experience with automated testing tools, such as Tosca, UFT, Selenium, Appium, or similar technologies. Proficiency in programming languages, such as PL/SQL, Java, Python, or C#. Understanding of Wealth Management and Investment products and propositions. Desirable skills/knowledge/experience: Certification in software testing, such as ISTQB ...

Role: Backend Developer (Core Java) We are seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. The ideal candidate will have a solid foundation in system architecture and will collaborate closely with DevOps … continuously improve SDLC processes Support additional ad hoc technical tasks as required Technical Skills: 5+ years of experience in software engineering with strong Core Java expertise At least 2 years of experience working with SQL databases Strong experience in API development and automation Familiarity with cloud platforms such ...

complex, highly integrated systems in a regulated environ ment Requirem ents:10+ years’ experience in QA/Test Autom ationStrong hands-on experience with Java/JavaScript (Spring Boot environm ents)Expertise in automation tools (Selenium, RestAssured, etc.)Experience with BDD/TDD (Cucumber, JUnit, Te stNG)Proven background ...

/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 Solid Linux/network stack knowledge, as well as optimization/tuning Nice to haves Containerization (Docker/Kubernetes ...

team Key Requirements Strong commercial experience in Kotlin or JVM technologies for backend development Confidence working with Spring Boot or Kotlin or Java to build robust microservices A passion for creating API-first products Ability to write efficient, secure, well-documented, and clean code Familiar with Agile principles and best ...

skills in Python , Bash, or PowerShell Familiarity with observability tooling and SRE principles SQL and database knowledge (MySQL, Oracle, or similar) Experience supporting .NET, Java, or microservices applications It would be great if you had: ITIL v3/v4 certification or ServiceNow experience Knowledge of Swift payment flows or financial ...

/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 Strong Linux/network stack knowledge, as well as optimization/tuning Nice to haves Containerization (Docker/Kubernetes ...

Command-line/API experience is highly desirable as security automation is a strategic priority. • Some coding experience in something is always a plus - Java, HTML, JavaScript. You do not need to “be a developer” but you do need to understand the implications of security on engineering velocity. • Knowledge ...

team Qualifications Bachelor's degree in computer science, engineering, or related fields Over 5 years of experience with data, machine learning and python, typescript, Java, or Scala Previous experience at a product company building SaaS platforms is highly desirable Expert in designing data stores (relational, NoSQL, blob storage & vector) Experience ...

Excellence: Proven experience leading and supporting software engineering teams to achieve business goals. Technical Breadth: Excellent knowledge of RESTful API development in modern languages (Java, Python, or .Net) and experience with Cloud environments (AWS or Azure). AI Awareness: You aren't necessarily a researcher, but you have expectations ...

their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid role … offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput ...

background in data architecture and software engineering Experience across Azure, big data technologies, and modern data platforms Ability to work hands-on when needed (Java, Scala, Python) Expertise in data modelling, integration, and microservices architecture Strong stakeholder engagement and communication skills Why Apply? Work on high-profile, large-scale transformation ...

platforms Knowledge of big data and distributed systems Experience with microservices architecture Ability to be hands-on when required using technologies such as Python, Java, or Scala Strong understanding of both structured and unstructured data design Experience leading teams and engaging with senior stakeholders Excellent communication skills, both written ...

Push back on requirements, think about the customer, and understand the bigger picture Contribute to architecture decisions as the team and platform scale Stack: Java, GoLang, Python - React, TypeScript, Next.js - Terraform, GCP, GitHub Actions. AI? YES - They're shipping LLM-powered products 👉 Exact tech match less important than strong backend ...

Senior Java Developer Annual Salary: Competitive with performance-related bonus Location: City of London (Hybrid - 3 days a week onsite) Job Type: Full-Time, Permanent A new exciting opportunity has become available for an experienced Senior Java Developer to join a growing Technology department working specifically within Capital Markets … improvement of engineering standards. Collaborate with Client Services and Product Management to understand requirements and propose solutions. Manage and mentor a small team of Java developers, promoting a culture of quality, ownership, and continuous improvement. Required Skills & Qualifications: 7+ years' Java development experience in Financial Services. Strong understanding of capital ...

13+ billion. For more information on how we process your personal data, please refer to HCLTech’ s Candidate Data Privacy Notice. Must Have – Java, Low-latency, financial services background, and hands on coding skills "Our app relies heavily on async development, we use vertex. it takes significant time to switch … have significant intuition with that, and some modern messaging like Aeron or ZeroMQ." DETAILED RESPONSIBILITIES- - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and ensure ...

engineering teams to deliver end-to-end solutions Ensuring code quality through testing, reviews and engineering best practices What we’re looking for: Strong Java development experience Experience with greenfield architecture/platform builds Experience building event-driven/distributed systems (Kafka, Solace or similar) Proven track record working ...

unblock current bandwidth constraints, and ensure continued delivery momentum within a fixed multi-year funding envelope. • 5+ years of strong Python development experience (optional Java) with demonstrable experience of having designed and developed complex server-side components. • Experience working in Financial Services specifically within markets in front office derivatives risk ...

performance-driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges ⚡ Curiosity, drive, and the ability to thrive in fast ...