144,599+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Unit4 ERP Technical Developer

Unit4 ERP Technical Developer Location: London (on-site) Salary: £70,000-75,000 About the Role This role is responsible for managing, designing, developing, and delivering a wide range of technical solutions, including reports, integrations, extensions, and innovat ...

Senior Quant Software Developer

Project description We are hiring in the Middle East. There are many projects and opportunities in the region. Our team consists of frontend and backend developers, data analysts and data scientists, architects, analysts and project managers. Responsibilities Develop and m ...

FO e Trading Developer

Location: London (Hybrid – 3 days per week in the office)Sector: Financial Services – Investment BankingArea: Front Office / E-Trading / FXTeam: London Trading Desk with Global Interaction Role Overview We are seeking a highly capable Jnr/Mid-lev ...

Boomi Technical Consultant (Developer) – ...

Boomi Technical Consultant (Developer) - Contract - MUST beSC Cleared Role Title: Boomi Technical Consultant Contract Type: Contractor / Outside IR35 (if applicable) Location: UK-based / Hybrid or Remote Sector: Public Sector Dura ...

Senior AI Software Developer

WorldQuant develops and deploys systematic financial strategies across a broad range of asset classes and global markets. We seek to produce high-quality predictive signals (alphas) through our proprietary research platform to employ financial strategies focused on market inefficiencies. Our teams work col ...

Mid Level Python Developer

Overview OB have partnered with a FinTech company, who are looking to bring on 2 x Mid-Level Python Developers to their highly skilled engineering team. You’ll have the opportunity to work closely with the CTO & Head of Engineering to have an impact from day one, and develop their systems. ...

Finance Systems BI Developer

Finance Systems BI Developer - (12-Month FTC) Saffery is undergoing a significant digital transformation in how we deliver business intelligence. As part of this, we are strengthening our Finance reporting capability with an additional BI resource focused on accelerating the delivery of financial ...

Frontend Developer (SFIA 3)

Zaizi is looking for a Front End Developer with solid technology skills, who are also passionate about improving outcomes and the user experience. You will be confident in your own skills with a proven track record of delivering high quality software in demanding environments. You will be passionate about ...

Trading Developer x 2

Yearly salary 60,000.00 GBP - 75,000.00 GBP We are seeking skilled Trading Developers to design and deliver high-performance trading tools and automated processes that enable profitable trading across multiple markets and commodities. You will play a key role in building robust, scalable, and secur ...

Medical Systems Integration developer

We are seeking an experienced Principal Integration Engineer to lead the design, implementation, and optimisation of healthcare system integrations across clinical and diagnostic environments. This is a senior, hands‑on role requiring deep expertise in HL7 messaging, DICOM workflows, and healthcare interop ...

Remote Blockchain Developer UniAPT

Develop and optimize UNIAPT’s proprietary Blockchain toolset, including wallet analyzers, gas fee reducers, and NFT collection generators. Implement multi-layer encryption, such as lattice-based and post-quantum secure, across our ecosystem. Collaborate on smart contract integration for in-en ...

Senior Software Developer (Python)

Join to apply for the Senior Software Developer (Python) role at Olive Jar Digital FTC or Permanent, UK-wide, Remote About the Role Olive Jar Digital is seeking a Senior Software Developer to help build, refine, and enhance high‑fidelity AI prototypes and supportin ...

Ruby on Rails Developer

London, South East England, United Kingdom. Company: JR UK. Client/Employer: Sorcer. Responsibilities Develop, maintain, and scale backend applications using Ruby on Rails and associated technologies. Partner closely with product and frontend teams to deliv ...

Senior Front End Developer

I’m hoping you’ll REACT positively to this advert…. Are you a front-end wizard who loves turning designs into sleek, interactive user experiences? Ready to work on a platform that’s going to transform how tech education happens? You’ll be building a cutting-edge SaaS tool designed to revolutionize ...

Quantitative Developer/Software Engineer

Role Overview We are seeking a Senior Python Software Engineer/Quantitative Developer to take a leading role in the design, development, and evolution of the client’s core analytics and trading platforms. The role is explicitly Python‑centric, with a strong focus on software architecture, code qua ...

Salesforce Marketing Cloud developer

As the Salesforce Marketing Cloud Developer you will be collaborating with a cross functional team to build engaging consumer journeys, personalized presentation templates, and dynamic consumer audiences to help foster a meaningful relationship with consumers. Reporting to the Director of Digital M ...

Software Developer Enterprise Technology

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 ...

Associate Software Developer (C++)

City Of London, England, United Kingdom Associate Software Developer (C++) - FlexTrade FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy‑and‑sell side financial institutions. Through deep client partnerships with some of the ...

Senior AI Software Developer

WorldQuant develops and deploys systematic financial strategies across a broad range of asset classes and global markets. We seek to produce high-quality predictive signals (alphas) through our proprietary research platform to employ financial strategies focused on market inefficiencies. Our teams work col ...

Software Developer Energy Operations

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 a ...

Netsuite Developer with Salesforce

NetSuite Developers with Salesforce Our Client is looking to recruit a Netsuite Developer with Salesforce experience. Key Responsibilities Understand the Client's business and processes to provide inputs for improved use of technology, including Salesforce. Propose system ...

FO e Trading Developer

Location: London (Hybrid – 3 days per week in the office) Sector: Financial Services – Investment Banking Area: Front Office / E-Trading / FX Team: London Trading Desk with Global Interaction Role Overview We are seeking a highly cap ...

Senior Python Developer (Networking)

Senior Python Developer (Networking) | Tech-Led Systematic Hedge Fund A leading, technology-driven systematic hedge fund is seeking a Senior Python or Go Developer to work within their Networking division. This is a highly technical role focused on building the automation, tooling, and guard ...

Python Developer Insurance Analytics

Overview Python Developer - Insurance Analytics – London with hybrid working as per departmental requirements (2 days per week in the office). In this role you will work on production-grade analytical and AI systems that shape real commercial decisions. You’ll work with some of the world’s ...

Unit4 ERP Technical Developer

This role is responsible for managing, designing, developing, and delivering a wide range of technical solutions, including reports, integrations, extensions, and innovative new capabilities. The successful candidate will work closely with clients to gather requirements, evaluate solution options, a ...

C# Developer Risk Technology

Maven is a market-leading proprietary trading firm deploying its own capital across discretionary, systematic, and market‑making strategies. Backed by deep expertise in trading, technology, and research, we are relentlessly focused on improving liquidity across global listed derivatives. Through advanced e ...

Senior Front end Developer

Senior Front-end Developer (Experimentation) What is the job? We are seeking a talented and motivated Senior Front-End Developer to join our dynamic team, so if you are passionate about building high-performance digital platforms, then this could be the next role for you. You will work ...

Senior Software Developer (Go)

Join the Future of Technology with ZILO™ At ZILO™, we're redefining what’s possible in technology.ZILO™ is the UK-based FinTech specialising in global asset and wealth management software,designed to scale and transform businesses of all types using our own developed AI Technology. Our mission is ...

C++ Quant Developer Options

About Wintermute Wintermute is one of the largest crypto-native algorithmic trading companies in digital assets. We provide liquidity algorithmically across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain proje ...

C++ Quant Developer Options

About Wintermute About Wintermute Wintermute is one of the largest crypto-native algorithmic trading companies in digital assets. We provide liquidity algorithmically across most cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high ...

Python Software Developer Algos

Founded in 1999 and premium listed on the Main Market of the London Stock Exchange, Playtech is a technology leader in the gambling industry with over 7,000 employees across 20 countries. Playtech is the gambling industry's leading technology company delivering business intelligence-driven gambling ...

Python Developer Insurance analytics

Python Developer - Insurance analytics Location - London with hybrid working as per departmental requirements (currently a MINIMUM of 40% (2 days per week)). LCP is an award‑winning actuarial and analytics consultancy providing market‑leading capabilities and advice across pensions and fi ...

Mid Level Database Developer

Location: Central London (Hybrid 2-3 days in office)Salary: £45,000 – £50,000 Overview We’re working with a specialist financial data organisation that processes large-scale, highly structured datasets for regulated reporting across major banking and lending clients. ...

Market Data System Developer

Department- Information Systems Department Location- UK London onsite Contact- 6 to 1Yr. (Can be extended) Primary Responsibilities The role involves the development and management of the applications/services for which the MDS team has respons ...

Solution Developer, FP&A

AtBoard, we power financial and operational planning solutions for the world’s best brands. Thousands of enterprises use our technology to optimizeresources, drive growth, and ensure profitability. With advanced analytics and forecasting, plus AI-driven insights, customers transform complex, real-time data ...

Full Stack Blockchain Developer

Sprytech is a Blockchain development company. The company has developed several Blockchain applications and is highly involved in innovative projects such as Pharmachain, IOT Firmware upgrade and Hedera Hashgraph. To support our growth, we are currently looking to recruit full stack blockchain developer to jo ...

Developer APEX and Sybase

Overview We are seeking an experienced APEX Developer with strong Sybase DBA expertise to support a UK-based banking environment. The role focuses on onboarding Sybase databases into dbDoot (a compliance tool), developing dbDoot rules, building ETL integrations from Sybase to Oracle, and ensuring ...

Low Latency C++ Developer

Low-Latency C++ Developer We are working with a global-leading trading firm, urgently looking for an exceptional C++ Developer to work on performance-critical systems. You will join an elite and incredibly performant team in London, whilst having the opportunity to gain more exposure to the resea ...

Trading Developer x 2

We are seeking skilled Trading Developers to design and deliver high-performance trading tools and automated processes that enable profitable trading across multiple markets and commodities. You will play a key role in building robust, scalable, and secure solutions that support front-office trading activi ...

Director of Developer Relations

Overview At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating grea ...

Transcat Developer (Temenos T24)

Job Description Fancy working for a long established international bank with amazing benefits? Work right in the heart of the west end with lots to see and do? Work with the latest verions of T24? If so we could have the job for you... Role T 24 Developer AKA T24 Technical Consultant, T24 Technical specialist, T ...

Software Developer Risk Reliability

Position Overview:As a Reliability Software Engineer in the Risk team, you will play a critical role in ensuring the performance, stability and availability of the Risk software systems, as well as their day-to-day operations. Squarepoint's Risk platform is responsible for position managemen ...

NET Core / C# Developer

Join to apply for the NET Core / C# Developer role at TieTalent Join to apply for the NET Core / C# Developer role at TieTalent 6 Month ContractLondon (Hybrid)Rates: NegotiableWe’re partnering with a global tradi ...

Backend Software Developer (SFIA4)

Requirements Developing digital solutions delivered to the GDS standard ,Demonstrable experience working on Agile environments ,Demonstrable experience working on product development environments based on observation, experimentation and user research ,Demonstrable ...

Cost Manager Commercial Developer

Job DescriptionTurner & Townsend is a leading management consultancy provider in the Commercial Developer sector. Leveraging our skills, processes, and knowledge, we offer industry-leading services to our clients. Our extensive experience and databank enable us to deliver proactive, value-added ...

Full Stack Software Developer

Full Stack Software Engineer, £50-85k, 3 days per week in London - Ground-breaking Fitness tech! About Us MAGIC AI is an elegant in-home health coach that utilises computer vision, connected weights, and 3D cameras to provide personalised training sessions led by world-renowned at ...

Quantitative Developer, Index Rebalance.

Quantitative Developer, Index RebalanceMillennium is a top tier global hedge fund with a strong commitment to leveraging market innovations in technology and data to deliver high-quality returns.A collaborative, and entrepreneurial investment team is seeking an experienced developer to join in building ...

C++/FPGA Developer – London

Salary: £200k + bonusSummaryThe positive feel of a start-up with the benefits that come with a more established player, this leading quant firm is looking for exceptional C++/FPGA engineers. This role will be working on a very successful HFT desk within an elite global team ...

Python Developer (Low Code)

Overview Low Code Software Engineer - Python | n8n | AI £65,000–75,000 base salary + comprehensive benefits Central London, 2 days a week I’m working with a leading European professional services firm that’s investing heavily in AI and automation, bringing more ...

Kotlin Developer (SC cleared)

Kotlin Developer (SC Cleared)Outside IR35We are seeking experienced Kotlin Developers to join a high-profile national digital programme, building secure, scalable, and user-focuse ...

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