172,134+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Senior Data Engineer Palantir Platform

A technology solutions provider in Greater London is seeking a Senior Palantir Engineer to design and develop data processing software for Big Data technologies. The role involves collaborating with various teams to ensure code quality and operational readiness. Strong experience in Java, Scala, or Python and fa ...

Senior Software Engineer Security Cleared, Secure Cloud Native

A leading digital products company in the UK is looking for Senior and Principal Engineers to design secure, scalable software in agile teams. Applicants must hold active or recently active SC or DV clearance and possess strong experience in delivering production systems. Proficiency in modern programming langua ...

Senior Software Engineer, Unified Platform Global Markets

A diversified trading firm in Greater London is seeking a Senior Software Engineer to join their Unified Platform team. The role involves developing software solutions for data acquisition and visualization while collaborating closely with internal users. Candidates should have strong experience in Java or Pytho ...

Senior Software Engineer — FinTech Payments & Banking Integrations

A leading fintech company in Greater London is looking for a Software Engineer to drive the development of payment technologies. In this role, you'll integrate new bank APIs and work on a variety of challenges in crypto and fintech. Ideal candidates should have a strong knowledge of Java and enterprise software, ...

Senior Software Engineer — AI Driven, High Impact IC

A forward-thinking fintech firm based in London is seeking an individual contributor in engineering. You will develop clean, maintainable code to support an ethical finance platform while collaborating closely with product teams. Ideal candidates will have strong experience in JavaScript/TypeScript and Java/Kotl ...

Senior Data Platform Engineer — ELT & Pipelines

RVU is seeking a Senior Software Engineer in Greater London to design and maintain data pipelines that support analytics and business teams. You will help build a cloud-based ELT platform and monitor data performance metrics while collaborating with various teams. The ideal candidate should have strong ...

Senior Software Engineer, Unified Trade Platform

DRW Holdings, LLC. is seeking a Senior Software Engineer for their Unified Platform in London. The role involves building robust systems with an emphasis on testing and scalability, designing and programming in languages such as Java, Python, and Clojure. The ideal candidate has experience with micro-s ...

Senior Software Engineer, Fintech Platform: Scale & Impact

Hamilton Barnes Associates Limited is seeking a product-minded engineer to join their global trading and investment firm based in Greater London. This role involves building with JavaScript/TypeScript and Node.js, owning technical problems end-to-end, and improving large-scale systems. The ideal candid ...

Senior Software Engineer — Enterprise SaaS, Product Ownership

A growing SaaS company in Greater London is seeking a Senior Engineer to enhance product features in a dynamic environment. Ideal candidates should have strong experience in Java and Angular, along with a solid understanding of REST APIs and a proactive approach to delivery. This role offers real product ownersh ...

Senior Android Engineer Kotlin, Scale & Impact

A leading food delivery service in Greater London is seeking a Software Engineer to enhance their technology infrastructure. The role involves improving code structure and architecture, as well as leading projects in a collaborative environment. Ideal candidates will have over 3 years of experience in Android de ...

Senior Software Engineer, Scale — Fintech Platform

Airwallex, a global payments platform, seeks an experienced Software Engineer to join our team in Greater London. You'll design and maintain our embedded finance infrastructure, collaborate across departments, and impact how businesses use our services. We're looking for someone with 5+ years in Java/Spring Boot ...

Senior Marketing Platform Engineer – Data Driven Growth

A global technology company is seeking a Senior Software Engineer for their Marketing Platform team in London. The candidate will manage and evolve the marketing platform and comparison scraping for international customers. Ideal applicants have over five years' experience in Java or Kotlin, strong expertise in ...

Senior Android Engineer Digital Identity & Fintech

A leading financial services firm is seeking a Software Engineer III - Android to focus on creating customer-centric products. You will be responsible for developing and delivering product features, collaborating with cross-functional teams, and ensuring high-quality code. The ideal candidate will have advanced ...

Senior GenAI Platform Engineer

RELX INC is seeking a Senior Software Engineer I in Greater London, focused on building generative AI services. You will design and develop scalable backend systems using Python and Java, collaborate with cross-functional teams, and mentor junior developers. This role promotes a healthy work-life balan ...

Senior Software Engineer I — Generative AI Platforms

RELX is seeking a Senior Software Engineer I to implement robust systems delivering reusable AI services. You will collaborate closely with cross-functional teams to tackle meaningful challenges and mentor fellow engineers within a flexible working environment. Ideal candidates will have 5+ years of ex ...

Streaming Architect: Kafka, Confluent & Cloud Platforms

A technology consulting firm is seeking a Confluent Solution Architect based in Canary Wharf, London. The role involves designing and architecting enterprise-grade streaming solutions using Apache Kafka and the Confluent Platform. Candidates should possess over 8 years of experience in Kafka, strong skills in Ja ...

Senior Software Engineer, Unified Platform Global Markets

A leading trading firm in the UK is seeking a Senior Software Engineer to join their Unified Platform organization. This role involves developing tools for data acquisition, storage, and visualization, while collaborating closely with analysts and traders. The ideal candidate will have 2-3 years of software deve ...

Senior GenAI Platform Engineer

A global information provider is seeking a Senior Software Engineer II to drive architectural decisions and develop generative AI services. The ideal candidate should have over 5 years of software engineering experience, deep expertise in Python or Java, and strong experience with Kubernetes. Responsible for des ...

Crypto ML Scientist & LLM Engineer

Unchain Data is seeking a skilled Machine Learning Engineer to optimize ML systems and enhance AI capabilities. The role involves consulting on objectives, designing self-running systems, and analyzing data to improve predictive accuracy. Ideal candidates will possess a Bachelor's in a relevant field a ...

Senior Software Engineer, Unified Trade Platform & Orders

DRW in London is looking for a Senior Software Engineer for their Unified Platform, focusing on trade management and order processing. This role involves building reliable and scalable systems, engaging in both legacy and green-field development, and promoting new technologies. Candidates should have e ...

Senior ML Engineer Fraud & Identity Platforms

LexisNexis Risk Solutions in Greater London is seeking experienced software engineers to build and deploy ML-powered services for fraud and identity analytics. The role emphasizes developing APIs and microservices while ensuring strong security standards. Candidates should have 4+ years in software eng ...

Lead Solutions Architect – Connected Mobility & Data

Toyota Connected Europe in Greater London is seeking a Solution Architect to join their engineering team. The role involves delivering solutions across various initiatives in driver apps and data integration. Responsibilities include designing secure systems, collaborating with stakeholders, and documenting arch ...

Senior Software Engineer FX Trading Platforms

A global financial services provider is seeking a Senior Software Engineer to enhance electronic FX trading solutions. In this role, you will leverage your Java expertise and work in a collaborative environment to deliver robust systems that meet business needs. You will contribute to solution design, guide engi ...

Site Reliability Engineer – Cloud Native & Resilient Systems

A leading fintech company in London is seeking a Site Reliability Engineer to ensure the reliability and scalability of their production infrastructure. You will work closely with product engineering teams and have the opportunity to influence the global financial landscape while tackling complex challenges. The ...

Trading Connectivity Backend Engineer

A leading technology firm in the digital asset market is seeking a Software Engineer to join their Trading Connectivity team in London. In this role, you will design and maintain high-performance backend systems that connect with various liquidity providers. The ideal candidate has 1-3 years of experience in sof ...

Cloud Security Engineer Automation & Resilience

A leading technology firm in the UK is seeking a Cloud Security Engineer to manage and enhance security systems related to cloud technologies. The ideal candidate should have strong experience in Linux and Windows environments, AWS services, and high-level programming languages like Python and Java. Responsibili ...

Senior Software Engineer: CI/CD & IaC, Security by Design

Randstad Technologies Recruitment is looking for a Software Development Specialist to work in London, Cheltenham, Ipswich, or Manchester. The role involves building and securing technology platforms in a CI/CD environment, ensuring services are secure by design. The ideal candidate will have experience ...

Senior Software Engineer IAM Platform & Delivery

A global leader in information and analytics is seeking a Senior Software Engineer to design scalable and high-performance systems. This role involves complex technical challenges and mentoring junior team members within a dynamic IAM squad. The ideal candidate should possess over 4 years of software engineering ...

Senior Graph & AI Platform Engineer Flexible Hours

RELX INC is seeking a Senior Software Engineer I for their Search and AI Platform. You will design scalable, data-driven applications that enhance research capabilities and deliver business value. The position requires expertise in Java, Spring Boot, and distributed systems, working with cloud-native architec ...

Staff Data Quality & Governance Engineer

A leading online marketplace in Greater London is seeking a Staff Data Engineer to enhance the reliability, trust, and compliance of its data ecosystem. You will design frameworks and processes that strengthen data foundations and ensure accuracy and observability. The ideal candidate has substantial experience ...

Senior Software Engineer – AI Powered Search Platform

Elsevier is seeking a Senior Software Engineer I for their Search and AI Platform in London. You will design graph-based search services and develop applications leveraging Java, Spring Boot, and GraphQL, while collaborating with cross-functional teams. With over 4 years of experience in distributed sy ...

Hybrid Middleware Engineer | ITIL, APIs & Cloud

Queen Square Recruitment is seeking a Middleware Engineer for a hybrid role primarily in London, Reading or Leeds. You will support and maintain middleware platforms, ensuring system stability and performance in a fast-paced environment. The ideal candidate will have expertise in Java-based systems, AP ...

Senior Backend Engineer AI Powered Search Platform

Elsevier is seeking a Senior Software Engineer I to build and enhance their Search and AI Platform. This role involves designing graph-based search services and integrating with various cloud services. The ideal candidate has over 4 years of experience with strong expertise in Java and AWS. You will co ...

Senior Backend Engineer, Marketing Platform & Pipelines

Dangote Industries Limited in Greater London is seeking a Senior Backend Engineer to build and scale Wise’s price comparison platform. The role involves developing robust backends and APIs that ensure data quality and transparency, driving customer satisfaction and operational success. This position re ...

Software Engineer III FinTech Cloud Native Impact

Fairygodboss is hiring a Software Engineer III in Greater London to work within the Accelerator business. The ideal candidate thrives in a collaborative environment, focusing on developing innovative solutions that meet customer needs. This role requires proficiency in JVM-based languages, namely Java ...

Software Engineer Hybrid & Distributed Calc Engine

Limelight Health is looking for a Software Engineer in Greater London to design, build, and maintain their calculation framework and analytics products. You'll collaborate with engineers and quants to create a scalable calculation engine for the analytics platform. The ideal candidate has proven softwa ...

Senior Software Engineer – Quant Trading Data Platform

G MASS Consulting is seeking an experienced Software Engineer to join a leading Investment Manager client. This role involves designing and enhancing data and infrastructure platforms crucial for systematic trading strategies. You will work in a data-driven environment, collaborating with investment teams. </ ...

Senior Software Engineer, Fintech Platform: Scale & Impact

Hamilton Barnes Associates Limited is seeking a product-minded engineer to join their global trading and investment firm based in Greater London. This role involves building with JavaScript/TypeScript and Node.js, owning technical problems end-to-end, and improving large-scale systems. The ideal candid ...

Senior AI Solutions Engineer – LLMs & CRM Platform

428 Salesforce UK Limited is seeking a Forward Deployed Engineer to deliver cutting-edge AI solutions. This role requires expertise in transforming client needs into scalable production systems on the Salesforce platform. The ideal candidate will have at least 5 years of experience in AI solutions deli ...

Ads Platform Solutions Engineer

TikTok is seeking a Software Engineer to join their Solutions Engineering team in Greater London. In this role, you will build and deliver high-quality software solutions, mainly focusing on supporting advertisers using TikTok's Ads platform. The ideal candidate will have a Bachelor's degree in Compute ...

Trading Systems Software Engineer (Hybrid, London)

PDT Partners is looking for skilled Software Engineers to develop and maintain their trading technology. This hybrid position requires working in London at least three days a week. Candidates should have strong programming experience in C++, Python, or Java, and a degree in Computer Science. With a sal ...

Construction HSE Lead – Safety, Compliance & Culture

JAVA Recruitment Ltd is seeking a Construction Health, Safety & Environmental (HSE) Manager for a 30-week project in Enfield. The role involves leading site safety and ensuring compliance with HSE regulations in a live construction environment. The ideal candidate should possess strong communication sk ...

VP Software Engineer Financial Systems & Data

Goldman Sachs Group, Inc. is looking for a Vice President Software Engineer in London. This role involves managing end-to-end systems development in an Agile environment, producing technical designs and collaborating with finance stakeholders. The ideal candidate should have over 6 years of software de ...

Data Analyst: Data Flows & Systems Insight (Remote)

A leading recruitment agency is seeking a Data Analyst in London. The role focuses on analyzing and documenting data flows in existing systems, primarily built using Java, Node JS, and React. Candidates should have a strong background in data quality management, experience in cloud environments like AWS or Azure ...

Global Impact FDSE: End to End Solutions Architect

A leading software company based in Greater London seeks a Forward Deployed Software Engineer to design and implement solutions addressing complex customer challenges. You will work on impactful projects, leveraging technologies to drive real outcomes. Candidates should have at least 1+ years of programming expe ...

Software Engineer 2 – Cloud Analytics & Identity (Remote)

Elenchus Technologies seeks a Software Engineer Level 2 with 14+ years of experience to join its PDA Team. The ideal candidate should possess a robust understanding of cloud and large-scale analytics and be a proactive team player. Responsibilities include developing foundational identity intelligence analyti ...

Senior Android SDK & SaaS Implementation Engineer

Mandarin Recruitment is looking for an Android Implementation Engineer to join a California based computer software company. The ideal candidate should have over 4 years of experience in building apps using Java/Kotlin, as well as strong problem-solving abilities. The candidate must be bilingual in Eng ...

Junior Frontend Engineer (React/Vue/Angular) — TDD Focus

Java Script Works is looking for a Junior Frontend Engineer to join their team in London. The role offers a salary range of £35,000 to £50,000. Candidates should be familiar with technologies such as React, TDD, Vue.js, and Angular. While the position is full-time, benefits and perks are not specified. This is a ...

Senior Backend Platform Engineer London (Hybrid)

A technology company is seeking a backend engineer to design and maintain production-grade services. The ideal candidate will have significant experience in backend engineering, particularly with Java, Go, or Python, and strong understanding of AWS. This role offers a hybrid work model based out of the London of ...

Senior Quant Risk Manager – Margin Models & Risk IT Lead

London Stock Exchange Group is seeking a Manager for their Quant Risk Management team. This role involves implementing market data and risk-related projects, developing front-end IT tools, and analyzing existing models to improve performance. Candidates should have a degree and over 5 years of experience in the ...

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