58 lead technical developer jobs found in London

London, UK Apply CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at  www.coreweave.com .   We're proud to be a Living Wage accredited Employer.   What You’ll Do: The Monolith AI Platform Engineering Team at CoreWeave  is responsible for transitioning existing client environments to Monolith AI’s next-generation platform, maintaining the high velocity needed to support a rapidly growing customer base. This team works...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

World Wide Technology (WWT) is a global technology integrator and supply chain solutions provider. Through our culture of innovation, we inspire, build, and deliver business results, from idea to outcome.   World Wide Technology (WWT) is looking for an experienced FullStack Developer with strong expertise in Java, Agile delivery, software architecture, and AI-assisted development.   The ideal candidate combines hands-on engineering, technical leadership, solution design, and modernization of legacy applications while driving automation and innovation across development teams.   This is a contract Role & Inside IR35   FullStack Developer   Contract Duration: 6 months contract   Location: London, United Kingdom (Hybrid with 2- 3 days a week)   Key Responsibilities Drive product strategy, technical roadmap, and solution design using modern technologies and best practices. Lead...

Job Description: EXL (NASDAQ: EXLS) is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world’s leading corporations in industries including insurance, healthcare, banking and financial services, media and retail, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have more than 60,000 employees spanning six continents. For more information, visit www.exlservice.com . Role:  Lead Data Modeller BU/Segment:  Banking / Analytics Location:  London, United Kingdom (Hybrid working with 3 days a week in the office and travel to Halifax twice a month) Employment Type:  Umbrella Contract (Inside IR35) to...

Freelance Senior Product Designer (Outside of IR35) Duration: 9 months Start Date: End of August or ASAP Day Rate: Please specify in your application Contract: (Outside of IR35) Join Our Team as a Freelance Senior Product Designer (Outside of IR35) at Beyond Sports! Are you passionate about complex product systems, pixel-perfect UI, and leading the design of next-generation digital experiences that capture global audiences? At Beyond Sports, we don’t just visualize sports, we reinvent how fans experience them. Together with partners like NFL, NHL, FIFA, and Disney, we push the boundaries of real-time sports data, 3D graphics, and AI-driven storytelling across web and native mobile platforms. If you're an experienced Senior Product Designer with an exceptional visual craft, deep UX strategy expertise, and a track record of driving complex design initiatives alongside fast-moving engineering squads, this 9-month contract is an exciting opportunity to...

About the Role The Dynamics 365 Developer reports into the Complex Case Management Team DevOps Lead. The role will have a close working connection with IT teams, Partners/3rd parties, Operational Teams and Service Management. Responsibilities · Agile Practices: Integrate and support with agile based product development ceremonies such as sprint planning, standups, retrospectives and backlog grooming. · Solution Design and Development: Lead the design and development of custom solutions within Dynamics 365 and Power Platform, ensuring they meet business needs and align with best practices. · System Integration: Integrate Dynamics 365 with other systems and applications, ensuring seamless data flow and process automation. · Customization and Configuration: Customise and configure Dynamics 365 and Power Platform applications to meet specific business requirements. · Technical Leadership: Provide technical...

World Wide Technology (WWT) is a global technology integrator and supply chain solutions provider. Through our culture of innovation, we inspire, build, and deliver business results, from idea to outcome.   World Wide Technology (WWT) is looking for an experienced FullStack Developer with strong expertise in Java, Agile delivery, software architecture, and AI-assisted development.   The ideal candidate combines hands-on engineering, technical leadership, solution design, and modernization of legacy applications while driving automation and innovation across development teams.   This is a contract Role & Inside IR35   FullStack Developer   Contract Duration: 6 months contract   Location: London, United Kingdom (Hybrid with 2- 3 days a week)   Key Responsibilities Drive product strategy, technical roadmap, and solution design using modern technologies and best practices. Lead...

Company Description Join the world’s largest kdb+ Consultancy where every query matters, every millisecond counts and every system you build shapes the future of data-driven finance. At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers and collaborators who believe in pushing boundaries, not egos. If you're a proficient kdb+ developer ready to lead, innovate and make an impact, we want to hear from you. Job Description As a Senior kdb+ Engineer at [DI] you’ll be at the forefront of delivering high-performance, scalable solutions for some of the world’s most data-intensive financial institutions. You’ll: Lead technical delivery on client projects, setting the standard for quality and performance. Design and implement robust kdb+ architectures that handle billions of rows of time-series data. Collaborate with quants, traders, and analysts to...

Java and Azure Developer : Contract Role London, England, United Kingdom WPP is the trusted growth partner for the world’s leading brands.  We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth.    We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise.   Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow.    For more information,...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Job Introduction Handelsbanken combines a long-established relationship banking model with secure, resilient, and customer-focused technology. Our technology teams enable the Bank’s decentralised way of working, delivering systems built for stability, trust, and long-term value. We are on a multi-year technology and digital transformation journey to enhance customer experience and improve how colleagues work together. By modernising platforms, simplifying processes, and better connecting data and systems, we help relationship teams focus on customers and less on complexity. Our decentralised culture extends to technology. Teams are trusted to take ownership, make informed decisions, and deliver sustainable, high-quality solutions. We value engineering excellence, pragmatic problem-solving, and strong collaboration across technology, business, and risk. We offer technologists the opportunity to build lasting careers, deepen their expertise, and contribute to meaningful...

About the Role The Dynamics 365 Developer reports into the Complex Case Management Team DevOps Lead. The role will have a close working connection with IT teams, Partners/3rd parties, Operational Teams and Service Management. Responsibilities · Agile Practices: Integrate and support with agile based product development ceremonies such as sprint planning, standups, retrospectives and backlog grooming. · Solution Design and Development: Lead the design and development of custom solutions within Dynamics 365 and Power Platform, ensuring they meet business needs and align with best practices. · System Integration: Integrate Dynamics 365 with other systems and applications, ensuring seamless data flow and process automation. · Customization and Configuration: Customise and configure Dynamics 365 and Power Platform applications to meet specific business requirements. · Technical Leadership: Provide technical...

Company Description Join the world’s largest kdb+ Consultancy where every query matters, every millisecond counts and every system you build shapes the future of data-driven finance. At Data Intellect , we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers and collaborators who believe in pushing boundaries, not egos. If you're a proficient kdb+ developer ready to lead, innovate and make an impact, we want to hear from you. Job Description As a Senior kdb+ Engineer at [DI] you’ll be at the forefront of delivering high-performance, scalable solutions for some of the world’s most data-intensive financial institutions. You’ll: Lead technical delivery on client projects, setting the standard for quality and performance. Design and implement robust kdb+ architectures that handle billions of rows of time-series data. Collaborate with quants, traders, and analysts to...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

We are looking for a Senior AI Engineer to lead the engineering and deployment of autonomous agentic workflows. In this role, you will bridge the gap between domain risk experts-who hold deep subject-matter knowledge but limited technical capability-and modern AI infrastructure. You will design, build, and deploy intelligent "AI Change Agents" that integrate directly into developer ecosystems (Git, Jira, Confluence) to perform automated risk assessments, evaluate policy compliance, triangulate text-heavy datasets, and stream live updates to central risk registers. Job Description Hands-on experience building multi-agent systems, complex RAG pipelines, tool-use mechanisms, and multi-step workflows using frameworks such as LangGraph, Pydantic AI, AutoGen, or similar. Production-grade Python skills with a strong emphasis on writing clean, modular, testable, and maintainable code. Deep experience integrating with enterprise collaboration and CI/CD ecosystems, specifically...

About the Role The Dynamics 365 Developer reports into the Complex Case Management Team DevOps Lead. The role will have a close working connection with IT teams, Partners/3rd parties, Operational Teams and Service Management. Responsibilities · Agile Practices: Integrate and support with agile based product development ceremonies such as sprint planning, standups, retrospectives and backlog grooming. · Solution Design and Development: Lead the design and development of custom solutions within Dynamics 365 and Power Platform, ensuring they meet business needs and align with best practices. · System Integration: Integrate Dynamics 365 with other systems and applications, ensuring seamless data flow and process automation. · Customization and Configuration: Customise and configure Dynamics 365 and Power Platform applications to meet specific business requirements. · Technical Leadership: Provide technical guidance...

Senior Consultant (Commerce) - Contract Who We Are WPP Enterprise Solutions designs, builds, and operates the growth systems that competitive businesses rely on. In a world where Al is reshaping how companies drive growth, we lead clients in business transformation and marketing modernization, connecting strategy directly to execution. Our 12,000 experts in engineering and platforms, commerce, consulting, content transformation, CRM, and CX work within a unified global operating unit across 40+ markets. WPP Enterprise Solutions works alongside best-in-class partners including Adobe, AWS, Braze, Google, Microsoft, Salesforce, and Shopify, as well as innovators in AI, to deliver growth solutions tailored to the needs of our clients’ businesses. VML, part of WPP, supports WPP Enterprise Solutions by helping brands activate transformation through creativity and experience.   Senior Consultant with experience in Commerce ecosystems and technologies...

Location Victoria, London (Hybrid – 3 days onsite) Contract 6 months initial – Inside IR35 Day Rate £450-£500 per day Role Overview We are seeking a hands-on Microsoft 365 technical lead to drive the organisation's AI enablement, Power Platform adoption and SharePoint transformation within a large enterprise environment. The role will focus on securely enabling Microsoft Copilot, Copilot Studio and AI-powered workflows, while maximizing the value of SharePoint Online, Power Platform and Microsoft 365 as the organisation's core collaboration, automation and information platform. The successful candidate will combine strong technical knowledge with the ability to define and implement AI, automation, content and collaboration strategies across the Microsoft ecosystem. This is a technical leadership role, but the expectation is that the successful candidate will remain hands-on, designing, configuring and implementing solutions across...

Axiologik are looking to bring in a Contract SC Architect with experience of working on AI projects. This is a high value piece of work so if you love seeing the impact of your work come to life, read below and apply.   £750 DR Inside IR35 12 month contract - extensions likely Remote with sporadic travel to London (client offices) MUST HAVE ACTIVE SC CLEARANCE   The role will predominantly be to own the technical architecture for a new AI product, develop machine learning models supporting stakeholders and operationalise that capability. The architect will own the end-to-end design across model training, inference and integration into the existing estate and to set and hold the target architecture through build and delivery. This role will also act as the technical authority for both supplier and internal engineering teams.   Architecture Proven technical/solution architect on AI-focussed technology projects within...

Network Rail is at the heart of revitalising Britain's railway. From Crossrail - Europe's largest civil engineering project - to investment in world-class stations and major programmes of electrification, we are involved in some of the most ambitious and diverse ventures that this country has ever seen. We at Network Rail are dedicated to becoming one of Britain 's best employers and believe this starts with placing the candidate at the heart of everything we do!   Job Purpose The purpose of the Automation Architecture Lead is to provide hands-on technical, architectural and solution engineering leadership for the GBRX industry automation function. The role is responsible for defining the automation architecture, leading the design of automation solutions, establishing technical standards, and ensuring secure, scalable and reusable automation products by design. Working closely with other technical leads and delivery pods, the postholder will ensure that solution...