156,430+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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C# Developer : Deltix by EPAM : Algo Trading

We have an exciting opportunity for an experienced C# Developer to join an international Commodities Trading house! The ideal candidate will have a strong background in C# development within an established codebase and preferably within a trading environment. Location: London Employment Typ ...

Digital Assets Product Developer (Senior Vice President)

Overview By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Team/Role Overview Our team is at the forefront of digital ass ...

Hybrid Power BI Developer — Dashboards & Data Models

Nigel Frank is looking for a Power BI Developer to join their London team in a hybrid role. You will translate business needs into high-quality reporting solutions, enhancing Power BI data models and managing deliveries effectively. The ideal candidate has strong experience with Power BI, advanced SQL ...

Python Developer Intern — Finance Risk (Pandas/Numpy)

Stars Arena is seeking a Python Developer for a Risk-based project in London. The role requires extensive experience with Python, Pandas, and NumPy. You will be working with one of our Financial Services clients. The position is an internship and focuses on financial technology projects. Candidates sho ...

Senior Salesforce Developer Public Sector, Flexible Work

IBM is seeking a Senior Salesforce Developer for their UK Consulting team. This role involves designing, developing, and delivering secure solutions on the Salesforce platform. Your expertise in Salesforce, particularly with Apex and Visualforce, is critical to meet diverse business needs. Other respon ...

React Developer Real Time Data Visualization (Hybrid)

Hunter Bond is seeking a React Developer for a leading systematic trading firm based in London, offering hybrid working. You will design and develop advanced data applications that transform complex datasets into actionable insights. This role offers market-leading compensation up to £175,000 base, bon ...

Senior .NET MVC Developer – Remote – Fintech/iGaming

A leading recruitment agency is seeking a talented .Net Developer to enhance innovative projects in the iGaming and Fintech sectors. The successful candidate will work closely with diverse teams, contributing to the development of applications while enjoying the flexibility of remote work. Key requirements inclu ...

Software Developer Enterprise Technology [Node JS / Typescript]

Software Developer - Enterprise Technology (Node JS / Typescript) London, GB Full-Time Information Technology About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to ...

.NET Developer for CI/CD & Kubernetes Innovator

A leading technology firm in the UK is seeking a skilled .NET Developer to enhance their digital infrastructure. In this role, you will design and implement scalable solutions that optimize CI/CD pipelines and leverage Kubernetes for maximum efficiency. You will work closely with cross-functional teams to tackle ...

Game Engine Developer Intern – Build Scalable Tools

IMAGE FRAME INVESTMENT (UK) LIMITED is looking for a Game Engine Developer to join their R&D department. You will create foundational systems that support our global network of studios, focusing on scalable tools and modular engine extensions. The ideal candidate has a strong background in C++, game gr ...

C# Developer — Greenfield FinTech Tools | London (Flexible)

A leading trading firm in London is seeking a C# Developer to join their cutting-edge team. This role involves building high-performance tools for various greenfield projects utilizing the latest technology. The ideal candidate will have strong knowledge of C# and a STEM degree. The firm offers a flexible work e ...

Senior IDMC Developer: Cloud Data Integrations & Mappings

LTM is seeking a skilled Senior IDMC Developer to enhance their data engineering team. The successful candidate will design, develop, and implement data integration solutions using Informatica IDMC services. This role will involve collaborating with cross-functional teams and requires strong expertise in clou ...

C# .NET Developer – Azure, Agile & Full Lifecycle

Expleo Group is hiring for a software development position based in Greater London, UK. The role involves building high-quality systems while following Agile methodologies and working closely with clients to deliver software solutions. The ideal candidate will hold a degree in a related field and have experience ...

Remote SAS Developer — Risk Modeling Specialist (London)

A leading consulting company is looking for an experienced SAS Developer for a 6-month contract in London with remote working options. Candidates should have over 5 years of expertise in SAS Programming, SAS Macro, and experience with Linux OS, SQL, and XML. As a SAS Developer, you will support the Risk Modellin ...

Hybrid Mainframe Developer — CICS / z/OS Expert

N Consulting Limited is seeking a Mainframe Developer with experience in IBM Mainframe technologies, including CICS, z/OS, and COBOL, to work on critical banking applications. The role involves development, maintenance, and optimization of legacy systems, with a focus on performance tuning and production support ...

Hybrid SQL Server Developer — ETL, SSIS & BI

A financial services company in London is seeking a Senior SQL Server Developer to work on data-intensive applications within Group Corporate Treasury. The role involves developing and supporting ETL routines using SQL Server and SSIS, contributing to agile projects, and maintaining high performance in data solu ...

SFMC Marketing Cloud Developer: Journeys & API Integrations

A recruitment agency in London is seeking a Salesforce Marketing Cloud Developer to collaborate with a cross-functional team in building personalized consumer journeys and templates. The desired candidate should have expertise in Salesforce Marketing Cloud, strong knowledge of SQL, and animpressive capability in ...

Senior .NET Developer — Azure Cloud & E‑commerce

The Walt Disney Company is looking for Senior .NET Developers to join the Hammersmith team in London. You will be instrumental in modernizing their e-commerce platform and marketing microsites, transitioning from an ASP.NET MVC foundation to a cloud-hosted architecture. The role requires strong skills in C#, ASP ...

Senior C# / React Developer Energy Trading London

Working for a major energy trader (Oil, Power, Gas, Renewables) we are recruiting a Senior C# / React Developer with a background in financial services / trading systems / trading tools. The Role As a member of a skilled global team of software engineers, you will play a role in dev ...

Senior Software Developer for Healthtech (Fast Iteration)

Overview Dyad is hiring a senior software developer to work in an up-and-coming healthtech startup with a strong emphasis on quality and collaboration. We are easy on Elixir-specific experience and care more for familiarity with language-agnostic technical practices that allow fast iteration whil ...

Junior Quant Developer: Front Office Trading (Python)

A leading FinTech firm in London is seeking a Junior Quantitative Developer/Researcher. This role offers a competitive salary up to £120k and a significant bonus. Ideal candidates will have strong Python skills and a background in Quant Development or Software Engineering, preferably in a front office environmen ...

Hybrid SQL Developer Insurance Data & ETL Specialist

Arthur is seeking a skilled SQL Developer on a contract basis. The successful candidate will have the opportunity to design, develop, and maintain SQL databases that support crucial business applications. Essential skills include experience in the Lloyds insurance sector, strong knowledge of Microsoft ...

Quant Developer Analytics Platform & High Performance Trading

Barclays Bank PLC is seeking a Quant Developer for its Analytics Platform team at the Canary Wharf, London office. The ideal candidate will design and develop trading platforms, utilizing strong Python and C++ skills while collaborating with stakeholders to enhance performance and reliability. This rol ...

Front Office Derivatives Developer Trading Desk Tools

A global financial services platform in London seeks a Front Office Developer to enhance trading applications. The role requires strong Python skills and the ability to work closely with quants and trading teams to improve risk management and trading efficiency. Candidates should have 2-5 years of experience, a ...

BPM Developer (Metastorm) – Hybrid London Contract (6mo)

Adecco is seeking a BPM Developer for a 6-month contract in Greater London. In this hybrid role, you will design applications using Opentext MBPM, collaborate with database admins, and provide support for systems. Successful candidates will have a solid understanding of BPM technology and C# development skills. ...

SQL Server Developer | Hybrid Role & Data Excellence

WR Engineering is looking for a SQL Server Database Developer in Dartford to join their dynamic IT Development team. This hybrid role involves designing, building, and optimising database solutions that drive critical business systems within a thriving global logistics firm recognized in the Sunday Times Top ...

RTW Product Developer: Concept to Production London

Victoria Beckham in London is seeking a Product Developer for RTW to support the Senior Product Development Manager in managing the lifecycle of categories including Soft Separates and Fully Factored Jersey. This role involves overseeing the development process from design to production, ensuring stron ...

Menswear Product Developer: From Concept to Delivery

dSb Recruitment Consultancy Ltd. is seeking a Product Developer to join their team in Central London. This role focuses on menswear, aiding the product development process from concept to delivery across multiple seasons. The ideal candidate will manage developments, liaise with overseas factories, and ...

Product Developer, Soho Home 12 Month FTC

The Role As a Product Developer within our Upholstery team, you will be responsible for bringing commercially viable, design‑led furniture to life—from initial concept through to production. Working closely with Design, Product Development, and Sourcing, you will ensure all products are developed ...

Junior Quant Researcher, Analyst, Trader or Developer

Full‑Time Junior Quant Roles | Early‑Career Opportunities Looking to transform a strong academic background into a high‑impact, long‑term career in industry? We're hiring early‑career quants into full‑time roles at high‑performing, research‑led firms where quantitative thinking isn't a su ...

Software Developer Equity Market Making Trading Platform

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across ...

Front Office Developer(Full Stack Investment Systems))

TQUSI0719_5632 - Front Office Developer (Full Stack Investment Systems) Job Type: Contract Work Mode: Onsite (Client) Design, build and maintain internal applications and services that support clients' investment processes from research workflows through to d ...

Senior C# Developer — Low Latency Trading Tools

Mondrian Alpha is seeking a talented C# Developer to join their front-office technology team in Greater London. This role involves designing and building high-performance trading tools and APIs using modern C# and .NET technologies. Candidates should have an in-depth understanding of C# and experience in develop ...

Junior .NET Developer Gaming Studio (Remote UK)

A leading computer gaming company is seeking a Graduate / Junior .NET Developer to join their dynamic London team. This role offers a fantastic opportunity for new graduates to gain exposure to cutting-edge technologies such as .NET 10.0 and Azure, while working in a stylish office environment. The ideal candida ...

Market Data Developer Global Crypto Trading (C++)

A trading firm in Greater London is seeking a Software Engineer, Market Data to develop full-stack software systems supporting global trading operations. The ideal candidate will have significant expertise in C++ and Python, with experience designing high-performance applications. Responsibilities include workin ...

Oracle PL/SQL Developer | Liquibase | Public Sector

Location: Bristol, London or flexible UK locations Duration: Initial 6 months with strong extension potential Clearance: BPSS required We are supporting a growing SME consultancy delivering services into a major public sector programme and have an urgent requ ...

Crypto Quantitative Developer: Low Latency Trading Systems

Citadel Securities is expanding its digital assets team and seeking a Crypto Quantitative Developer in London. The role includes developing high-performance trading systems for crypto markets using modern C++. Key responsibilities encompass designing and maintaining low-latency systems, collaborating w ...

Physics Content Developer for AI Enhanced Learning

A leading education technology company in London is seeking an Instructional Content Developer (Physics) to create engaging educational content for A-Level and GCSE courses. The ideal candidate will have strong physics knowledge, excellent communication skills, and a passion for education. This role offers a com ...

Front Office Quant Developer/Researcher (Python/C++)

I am hiring on behalf of a growing mid-frequency trading firm that employs applied research methods to test investment hypotheses and design quantitative computer-driven trading models across various investment horizons and global liquid asset classes. They are actively hiring for highly motivated and skil ...

Informatica MDM Developer | Cloud Master Data & Governance

A technology solutions firm in Greater London is seeking an Informatica-MDM Developer on a contract basis. The role involves designing and implementing Informatica MDM solutions, leading project implementations, and ensuring data quality governance. Successful candidates will troubleshoot complex issues while co ...

Finishing Foreman – Residential Developer – North/Central London

Finishing Foreman – Residential Developer – North/Central London Salary: £45,000Location: Central LondonRegion: London Finishing Foreman – Residential Developer – North/Central London – up to £45,000 plus package My client is a top UK residential ...

Product Marketing Manager — Developer‑First GTM Leader

Ably is searching for a Product Marketing Manager who will play a key role in the go-to-market engine that powers growth. You will translate complex technical infrastructure into engaging narratives and tools for the Sales and Customer Success teams. The ideal candidate has significant experience in a ...

AI Startup SDR: Prospecting for Developer Tools

Cognition.AI is searching for a Sales Development Representative (SDR) to engage with prospects and drive revenue growth. Ideal candidates will possess a strong understanding of our AI technology and have a track record of success in sales roles. You will work closely with our go-to-market team to acce ...

Senior C++ Developer & VP, Low Latency Trading

LGBT Great is seeking a Senior C++ Developer to join their Vice President in the Latency Sensitive Electronic Trading (LSET) department. This role involves developing C/C++ components for low-latency trading services alongside a high-performing team in a hybrid work environment. Candidates must have proven C/C++ ...

Python Quant Developer — Cross Asset Risk & PnL

A leading global investment bank in London is seeking a mid-senior level Python Developer to join their cross-asset strategy group. This role involves working hands-on with trading teams and developing Python-based tools to enhance market risk and PnL analysis. Successful candidates are passionate about programm ...

Trading Tools Developer — Hybrid/Remote, Global Impact

SmartestEnergy is looking for skilled Trading Developers to create high-performance trading tools crucial for multiple markets. You will play a key role in developing secure solutions that enhance front-office trading activities. With a commitment to work-life balance, the role offers hybrid working: t ...

Dynamics 365 CRM Omnichannel Technical Consultant / Developer

Job Description Microsoft Dynamics 365 CRM Technical Consultant (omni channel / contact centre / Customer service) | Outside IR35 | £450-475 per day | Fully Remote | 6 Months initial contractA large new Microsoft Dynamics 365 CRM project at a Microsoft Gold Partner requires a D3 ...

Senior C# Developer C#.Net Sports Trading

Senior C# Developer / Backend Software Engineer (C# .Net) London onsite to £150kAre you an experienced backend focussed C# Developer?You could be progressing your career in a senior, hands-on role at a global Sports Trading business, earning substantial bonuses.As a Senior C# Devel ...

HFT C++ Developer (Fully Remote from anywhere)

SummaryMy client is a one-of-a-kind quantitative trading company operating on the cutting edge of technology. The company has risen to prominence in the HFT space in recent years, by leveraging not only the expertise of their talented people, but also state-of-the-art research infrastructure. Tr ...

Salesforce Developer Build Scalable CRM for Music

A fast-evolving music industry business in London seeks a Salesforce Developer to join their technology team. You will design and maintain Salesforce solutions to enhance automation and data quality in a collaborative Agile environment. Key responsibilities include developing integrations with external systems a ...

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