259 information technology jobs found in London

CONTRACT: Monthly Rolling START DATE: ASAP / Immediate PAYMENT: Day Rate LOCATION: Hybrid - 1 Days Remote, 4 Days In Office   WEBSITE: https://growthcurve.co   This role is open to Citizens / Permanent Residents of the United Kingdom ONLY.   We're the world's leading growth marketing agency. We work with some of the most ambitious companies globally across fintech, consumer apps, ecommerce, gaming and B2B, delivering full-funnel growth through strategy, media and creative under one roof.   Our clients increasingly need full product design work alongside growth marketing: responsive websites, landing page systems, onboarding flows, mobile app interfaces and the end-to-end product experiences that convert. We're looking for a freelance UI Designer to join us on a monthly rolling contract to own that work.   THE ENGAGEMENT You're a hands-on UI designer working across web and mobile, producing...

CONTRACT: Monthly Rolling START DATE: ASAP / Immediate PAYMENT: Day Rate LOCATION: Hybrid - 1 Days Remote, 4 Days In Office   WEBSITE: https://growthcurve.co   This role is open to Citizens / Permanent Residents of the United Kingdom ONLY.   We're the world's leading growth marketing agency. We work with some of the most ambitious companies globally across fintech, consumer apps, ecommerce, gaming and B2B, delivering full-funnel growth through strategy, media and creative under one roof.   We're building the main marketing site for an app product and we need a Senior Full Stack Developer to own it end-to-end. You'll architect, build, deploy and establish the build pipeline for a site that will be the primary commercial front door for the product.   THE ROLE You're the technical lead on this build. You'll take the project from initial architecture through to launch and hand-off, working closely with...

Senior Full Stack Developer - Outside IR35 - Contract - SC ideal   We are looking for a senior full-stack developer to join our team, working collaboratively in a fast-paced environment with some ambiguity. This is a senior dev role with a focus on supporting more junior members of the team and sharing that with the existing tech lead. The product is a note-taking and summarisation tool for use in local government, for which the remaining technical work mainly comprises infrastructure, evals, technical improvements, and UCD-driven product features.   Must have:   Experience mentoring junior developers Previously given responsibility for a chunk of delivery Comfortable working in Python and Typescript + React Full-stack developer   Nice to have: previous experience with AWS, Terraform, any UK government projects Slightly nice to have but lower priority: LLM/AI experience and Next.JS   £600 per day...

Senior AI Engineer - Inside IR35 - Contract   We're looking for a Senior AI Engineer to join an insurance client project to work on a 4-week-long discovery, which will lead to 5+ months of additional work.   The selected consultant will have the ability to use AI tools like Clude Code fot development, have experience migrating legacy code to new cloud technology stack, and it'd be great if you had experience working with Oracle forms and migrating it to Azure cloud.   Tech Experience: Azure, .Net, React, SQL   £610 per day inside IR35 2-3 days per week in London office   Start date: 05/05/2026 End date: 06/06/2026 (Likely extension to November 2026)   About Softwire   Softwire is a leading UK technology and strategy consultancy. From enterprise to government, we help visionary organisations turn strategic ambitions into results at scale. Our practices cover AI transformation, data...

As a  Data Architect , your main responsibilities will be: Responsible for governance and management of data and information, working closely with IT Security and Assurance colleagues to ensure HS2 Information if managed safely, securely, and legally. To be accountable for planning, directing and coordinating activities with IPTs, Joint Ventures and Tier 1 contractors to ensure deliverables meet HS2 contractual requirements. Be accountable for developing HS2's enterprise data model, ensures strategic alignment, and enabling integration with wider business and technology architectures. Be responsible for networking and communicating with senior stakeholders across HS2, proactively seeking out opportunities for digital transformation. Be responsible for assuring the quality of data, working with Information Asset Owners to agreed processes and standards.   Essential: Relational Data Modelling experience SQL experience is a must....

Role An opportunity exists for a technically oriented individual to join the Equity technology team in London. The role will focus on developing & maintaining our Equity Swaps platform – supporting front and middle office users in multiple time zones. The successful candidate will collaborate with business partners, analysts and stakeholders across the organisation to deliver the strategic book of work alongside supporting the day-to-day operations. Key Responsibilities Provide leadership as required to ensure successful delivery of a project. Owning specific projects or issues from start to finish. Documenting. Working with global colleagues, stakeholders and management to ensure appropriate prioritisation. Write high quality code, unit testing, working with QA, and overseeing the production release cycle. Trade support queries (2nd line)   Person Specification The following skills and experience are required...

Senior Shopify UI Designer wanted to join our dynamic Customer Experience team. The opportunity: We are looking for a highly experienced Senior UI Designer with strong Shopify expertise to support a fast-paced eCommerce replatform project. This role is focused on delivering high-quality, production-ready UI that aligns to Shopify capabilities, accelerates delivery, and ensures a seamless transition from the existing platform. You will play a key role in translating approved UX and business requirements into scalable, conversion-focused UI, working across Shopify's modular architecture while maintaining a high bar for design quality. This is a hands- on role requiring both speed and precision, with a strong understanding of how design decisions impact build, performance, and commercial outcomes. Please bear in mind that this is a 4 week remote contract. What you'll be doing: Lead the UI design workstream for a Shopify replatform, translating UX outputs...

Senior Full Stack Engineer ( Finance Experience Required )   London | Contract | Outside IR35 | Conquer AI   We’re hiring a Senior Full Stack Engineer at Conquer AI.   This is a hands-on engineering role for someone who can work across the stack, but with real strength in backend systems, data, and platform architecture. You’ll be joining us to help deliver a high-impact project in a complex, commercially critical environment.   This is not a pure frontend role. This is not a role for someone who wants to stay at the architecture-diagram level. We’re looking for someone who can take messy business processes, turn them into clear technical systems, and ship production-grade software.   What you’ll do Build and evolve workflow platforms that support intake, approvals, pipeline management, and execution handoffs Design and deliver APIs, services, and integrations across internal...

ABOUT THE COMPANY Onmo believes that everyone has the right to access, understand and manage their money with confidence. Our ambition is to improve lives by providing better clarity, intelligence and technology to empower every individual in making the smartest financial decisions. We may be young but we have an incredible team in place and big ambitions for the years ahead. We design our products to help demystify money matters wherever possible, providing customers with more financial control and flexibility in their lives. This helps them get more from what they have, or with smart decisions, make more of the same. It also means people spend less time with the negative aspects of money and more on the positive - enjoying what the world has to offer. ABOUT THE ROLE Tech Stack Backend : AWS Serverless Service, including Lambda, API Gateway, DynamoDB, S3, SNS, SQS, EventBridge, Kinesis, Node.js, YAML Frontend : React / Next.js, React Native Programming...

About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Role Overview We are seeking an experienced Senior KDB+ Developer to design, develop, and optimize high performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale, and close collaboration with business stakeholders—particularly within Risk functions—to deliver robust, efficient, and maintainable solutions. This role also includes technical responsibilities, mentoring junior developers and promoting best practices across the team. Job Location: London (Hybrid - 3 days in the office) Key Responsibilities Design, develop, and maintain kdb+ tick systems, with a strong understanding of data...

📣 Qim info – Who are we?   Founded in 2004, Qim info is an Swiss IT engineering and digital services company. We regularly collaborate with international clients and are looking for skilled contractors to support project-based engagements.   📄 Your responsibilities:   The objective of this role is to design, build, and govern an API integration layer connecting multiple internal and external systems within a complex energy trading environment.   💼 Required technical skills:   API & Integration Architecture: Strong expertise in API integration, REST API design and exposure, interface-driven architectures, integration-heavy environments, abstraction layers, system decoupling Backend Development: .NET Core, C#, API services, integration services Architeture & Platforms: Design of scalable and reusable integration layers, interoperability with multiple systems...

SAP FICO - Data Migration Consultant London, Hybrid Onsite/Remote Start Date: Immediately - ASAP. End date: 31/12/26 with view to extend to end 2027. Outside IR35 Contract.   Invenio are seeking to hire a senior SAP FICO/Data migration consultant to join a existing client engagement In London ASAP, as part of a integration of new business entity into existing SAP landscape.   Core Duties:   Execute Data migration strategy for all data objects (master and transaction data) for migration of all SAP Finance modules including approach for data cleansing and rationalisation. Lead end‑to‑end data migration for SAP Finance, (AP, AR, FA, and GL) covering GL balances, open items, assets, vendor/customer master data, and cost objects. execute data mapping rules aligned with global finance processes and IFRS/local GAAP requirements and business process integration Partner with finance SMEs to validate migrated data, ensuring 100%...

Senior AI Engineer - Inside IR35 - Contract   We're looking for a Senior AI Engineer to join an insurance client project to work on a 4-week-long discovery, which will lead to 5+ months of additional work.   The selected consultant will have the ability to use AI tools like Clude Code fot development, have experience migrating legacy code to new cloud technology stack, and it'd be great if you had experience working with Oracle forms and migrating it to Azure cloud.   Tech Experience: Azure, .Net, React, SQL   £610 per day inside IR35   Start date: 05/05/2026 End date: 06/06/2026 (Likely extension to November 2026)   About Softwire   Softwire is a leading UK technology and strategy consultancy. From enterprise to government, we help visionary organisations turn strategic ambitions into results at scale. Our practices cover AI transformation, data platforms, systems engineering advanced...

🚀 Contract Data Engineer | Outside IR35 | London (Hybrid, 3+ Days On-Site)   We’re seeking an experienced Data Engineer to join a high-profile team delivering large-scale tax projects . This is a contract role (Outside IR35) based in London, requiring on-site presence at least 3 days per week .   What you’ll do: Design, build, and optimise data pipelines and ETL processes for complex, high-volume data sets. Collaborate closely with Data Modellers, Analysts, and Tax Specialists to ensure data integrity and usability . Support large-scale tax initiatives , enabling accurate reporting and analysis. Implement best practices for data governance, quality, and security .   We’re looking for someone with: Proven experience as a Data Engineer working with relational and non-relational databases. Hands-on experience with ETL frameworks, data warehousing, and cloud platforms (SQL, Scala,...

About Dune Dune is on a mission to make crypto data accessible. We’re a collaborative multi-chain analytics platform used by thousands of developers, analysts, & investors to understand the on-chain world and the frontiers of finance. We’re a team of ~60 employees, working together across Europe and eastern US timezones 🌍️. We believe in our mission, and in building a powerful, open product that allows individuals and communities to do deep research into important ecosystems like Bitcoin, Ethereum, Solana, and many more.   We’re backed by some of the world's best investors. In February 2022, we announced our Series B funding round led by Coatue and Union Square Ventures, an important milestone that allowed us to double down on our mission. We’re using the funds to educate, reward and empower a new generation of onchain analysts aka Wizards 🧙 ♀️   If you want to have one of the highest impact jobs on the planet, come join our...

We currently have an urgent opening for a skilled DevOps Engineer to join us on a contract basis ASAP. This is a major Greenfield platform build for a UK bank. Joining a cross functional team of 14, in the Infrastructure / DevOps phase of building a brand new payments platform from scratch. Required skills: Terraform AWS (some Azure) Kubernetes Secure enterprise platform development experience Account and user policies CI/CD pipeline development 2 days in person working (Monday & Weds - Canary Wharf) START DATE MONDAY 30th MARCH   The role   We're looking for a Senior DevOps / Platform Engineer to join a specific project with a leading UK Bank. Red Badger delivers high quality digital products using a lean delivery process and multidisciplinary, cross-functional teams. The Senior DevOps / Platform Engineer has deep expertise in building and operating digital products,...

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...

About BMLL: BMLL is the leading independent provider of harmonised Level 3, 2 and 1 historical data and analytics across global equities, ETFs, futures and US equity options. We provide market participants with immediate access to granular T+1 order book data and advanced analytics, enabling them to accelerate research, optimise trading strategies, and better understand market behaviour. BMLL was acquired in 2025 by Nordic Capital, alongside minority shareholder Optiver, marking a joint commitment to accelerate the company’s next phase of growth. We offer an inclusive and collaborative culture, a hybrid working environment that includes regular days in our London office, weekly team lunches, and a variety of out-of-hours social activities. For more information, visit our website or follow us on X (@bmlltech) and LinkedIn @BMLL.   About the Role: BMLL transforms financial exchanges’ raw market data into an accessible and normalised...

Key Responsibilities: · Opportunity Identification & Mobilization o Partner with business and operational leaders to identify transformation opportunities across hospitality, operations, and technology. o Assess viability, alignment to business goals, and strategic impact of new ideas. o Facilitate discovery workshops and early business case development. · Project Planning & Commercial Approval o Rapidly develop initial project charters, timelines, and high-level delivery roadmaps. o Lead cost-benefit analysis and support commercial approvals in alignment with transformation governance. o Ensure risk, impact, and stakeholder assessments are in place for early decisions. · Team Mobilization & Delivery Kick-off o Build and align cross-functional teams to kick off approved initiatives. o Establish delivery governance, cadence, reporting structures, and KPIs. o Lead early-stage execution (typically 6–12...

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role   The Storage Engineering team manages hundreds of petabytes across VAST, PowerScale, ECS, Rubrik, Alletra, Pure and a custom Tier Zero platform. The current operational tooling is a patchwork of GitOps workflows and Jenkins pipelines. We're replacing it with a custom-built...