40 senior platform engineer jobs found in London

WE ARE: At Adaptive, we are a technology provider firm that partners with capital, commodity, and digital market participants to build custom front-office technology, messaging systems, and trading infrastructure. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach, with offices in London, New York, Barcelona, Montreal, and Manila, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication. We're looking for a Senior Java / Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron....

WE ARE: At Adaptive, we are a technology provider firm that partners with capital, commodity, and digital market participants to build custom front-office technology, messaging systems, and trading infrastructure. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach, with offices in London, New York, Barcelona, Montreal, and Manila, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication. We're looking for a Senior Java / Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron....

Location: Fully remote, UK Duration: 6-12 months, with possible extension Rate: £650 per day Engagement: Outside IR35 Start: ASAP We are looking for an experienced Senior Web Engineer to build out from scratch an enterprise-level ecommerce platform mechanism, focusing on platform integration, analytics, consent management and digital optimisation. You will work independently with product, engineering, data and privacy stakeholders to deliver high-quality frontend solutions and improve how customer data, tracking and consent are managed across the digital estate. What you'll do Build and integrate frontend functionality using React and modern JavaScript Lead integrations across enterprise ecommerce platforms, third-party tools, APIs and marketing technologies Implement robust data-governance practices across analytics and tracking solutions Support GDPR and PECR compliance, including consent management, cookie governance and privacy-conscious measurement Build and...

Senior Full Stack Engineer (Python & Typescript) Location: Predominantly Remote Start Date: November 2026 Duration: Until March/April 2027 Rate: £500 - £525 per day IR35: Outside IR35 The Opportunity We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme This is an opportunity to join a fast-paced engineering team focused on delivering high-quality software solutions where hands-on development, AI-assisted engineering, and structured delivery practices are central to success. What We're Looking For Successful candidates will have experience working within heavily regulated or enterprise environments and be comfortable operating within formal governance frameworks, change controls, ticketing processes, and established development life cycles. You'll bring: Proven experience delivering software solutions in regulated environments Strong...

Senior Front End Engineer (React & Typescript) Location: Predominantly Remote Start Date: November 2026 Duration: Until March/April 2027 Rate: £500 - £525 per day IR35: Outside IR35 The Opportunity We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme This is an opportunity to join a fast-paced engineering team focused on delivering high-quality software solutions where hands-on development, AI-assisted engineering, and structured delivery practices are central to success. What We're Looking For Successful candidates will have experience working within heavily regulated or enterprise environments and be comfortable operating within formal governance frameworks, change controls, ticketing processes, and established development life cycles. You'll bring: Proven experience delivering software solutions in regulated environments Strong...

Location: Fully remote, UK Duration: 6-12 months, with possible extension Rate: £650 per day Engagement: Outside IR35 Start: ASAP We are looking for an experienced Senior Web Engineer to build out from scratch an enterprise-level E-commerce platform mechanism, focusing on platform integration, analytics, consent management and digital optimisation. You will work independently with product, engineering, data and privacy stakeholders to deliver high-quality Front End solutions and improve how customer data, tracking and consent are managed across the digital estate. What you'll do Build and integrate Front End functionality using React and modern JavaScript Lead integrations across enterprise E-commerce platforms, third-party tools, APIs and marketing technologies Implement robust data-governance practices across analytics and tracking solutions Support GDPR and PECR compliance, including consent management, cookie governance and privacy-conscious measurement...

Senior Data Engineer London | Flexible, hybrid working pattern | Outside IR35 | 12-month engagement We're looking for a Senior Data Engineer to shape modern data platforms, solve complex engineering challenges, and deliver data solutions that create business value. You'll join an organisation investing heavily in its data capabilities, working alongside architects, analysts, data scientists, and engineering teams to build production-grade data platforms supporting analytics, AI, and operational decision-making. Why Join? Work on large-scale data and cloud transformation initiatives Influence architecture, engineering standards, and platform strategy Deliver solutions with measurable business impact Join a collaborative team of experienced data professionals Responsibilities Design, build, and maintain scalable data products and pipelines Own solutions from requirements gathering through to deployment and monitoring Develop cloud-native data platforms using...

Azure Platform Engineer | Contract | Outside IR35 Outside IR35 | London Market Insurance We are working with a leading London Market insurer looking for an experienced Azure Platform Engineer to deliver a new cloud sandbox platform. This is a hands on engineering assignment focused on building a secure, automated Azure environment that allows development and technology teams to provision temporary infrastructure for testing, experimentation and proof of concept activities. The platform architecture and strategy have already been defined. The successful contractor will take ownership of the technical implementation, automation and delivery through to operational handover. Key Responsibilities Build and configure Azure infrastructure to support secure, isolated sandbox environments. Develop reusable Terraform modules and Ansible playbooks to automate infrastructure provisioning. Implement automated deployment workflows using GitHub Enterprise and GitHub Actions....

Location: Fully remote, UK Duration: 6-12 months, with possible extension Rate: £650 per day Engagement: Outside IR35 Start: ASAP We are looking for an experienced Senior Web Engineer to build out from scratch an enterprise-level ecommerce platform mechanism, focusing on platform integration, analytics, consent management and digital optimisation. You will work independently with product, engineering, data and privacy stakeholders to deliver high-quality frontend solutions and improve how customer data, tracking and consent are managed across the digital estate. What you 'll do Build and integrate frontend functionality using React and modern JavaScript Lead integrations across enterprise ecommerce platforms, third-party tools, APIs and marketing technologies Implement robust data-governance practices across analytics and tracking solutions Support GDPR and PECR compliance, including consent management, cookie governance and...

Senior & Principal AI Delivery Consultants - Capital Markets Outside IR35 and Hybrid Working Location: London Start date: ASAP Contract requirement: 2-4 consultants, with the strongest two candidates prioritised for initial presentation. We are supporting a Tier-1 global financial institution looking to bring in experienced AI consultants who have successfully delivered commercial AI solutions into live production environments. The bank has several AI initiatives underway but needs additional engineering capacity to move projects beyond experimentation and into production. Previous permanent hiring efforts have not filled the requirement, so the priority is to identify high-quality consultants who can start quickly and deliver from day one. These are hands-on delivery roles, not research, advisory or proof-of-concept positions. Consultants will be responsible for designing and building AI solutions, integrating them into the bank's existing technology...

Security Engineer, AWS, DevSecOps Day rate: £650 per day (Outside IR35) Location: London 1 per day week Role: Security Engineer Length: 6 months + Likely extensions We're supporting a major transformation programme and are looking for a Security Engineer to help deliver and maintain security controls across multiple technology workstreams. Working closely with senior security specialists, you'll play a key role in securing cloud platforms, improving DevSecOps processes, managing vulnerabilities, and ensuring security is embedded throughout delivery. Key Responsibilities: Implement and optimise CI/CD security tooling. Manage vulnerabilities and support remediation activities. Review infrastructure, code and configuration changes for security risks. Support threat modelling and security assurance activities. Maintain secrets management, certificates and access controls. Develop reusable security controls and best practices. Produce security...

Job Title: Lead Data Engineer Location: London / Hybrid Position Type: 6 Month Contract - Outside IR35 About We're working with a major financial services organisation undergoing a large-scale data transformation programme. They are looking for a hands-on Lead Data Engineer to help build and scale an enterprise data platform, working closely with senior architects and engineering teams to deliver modern data capabilities across a complex environment. Key Responsibilities Lead the design and build of scalable data engineering solutions using Snowflake and dbt. * Develop data ingestion frameworks supporting batch, incremental and CDC patterns. * Build and optimise data pipelines across multiple source systems and platforms. * Design and implement data models for analytics, reporting and operational use cases. * Own CI/CD, automation and engineering best practice within the data platform. * Implement data governance, quality controls, monitoring and operational...

Job Title: Lead Data Engineer Location: London/Hybrid Position Type: 6 Month Contract - Outside IR35 About We're working with a major financial services organisation undergoing a large-scale data transformation programme. They are looking for a hands-on Lead Data Engineer to help build and scale an enterprise data platform, working closely with senior architects and engineering teams to deliver modern data capabilities across a complex environment. Key Responsibilities Lead the design and build of scalable data engineering solutions using Snowflake and dbt. . Develop data ingestion frameworks supporting batch, incremental and CDC patterns. . Build and optimise data pipelines across multiple source systems and platforms. . Design and implement data models for analytics, reporting and operational use cases. . Own CI/CD, automation and engineering best practice within the data platform. . Implement data governance, quality controls, monitoring and operational...

Senior GCP Network Engineer | Shared VPC | Cloud Interconnect | HA VPN | Cloud Router | Terraform | GKE | £450 Per Day Outside IR35 | London/Remote We're working with a US-based technology consultancy that is building a specialist Google Cloud delivery team for a large financial services programme. They're looking for a hands-on Senior GCP Network Engineer to design, automate and support secure cloud networking across a regulated enterprise environment. This isn't a traditional network engineering position. You'll need strong Google Cloud infrastructure and automation experience, with the ability to build and manage networking services through Terraform while contributing to the wider DevOps delivery programme. You'll be responsible for areas including: Shared VPC and hub-and-spoke network architecture Network Connectivity Center Cloud Interconnect and HA VPN Cloud Router and BGP Private Service Connect and Private Google Access Cloud...

Job Title: Lead Data Engineer Location: London / Hybrid Position Type: 6 Month Contract - Outside IR35 About We 're working with a major financial services organisation undergoing a large-scale data transformation programme. They are looking for a hands-on Lead Data Engineer to help build and scale an enterprise data platform, working closely with senior architects and engineering teams to deliver modern data capabilities across a complex environment. Key Responsibilities Lead the design and build of scalable data engineering solutions using Snowflake and dbt. * Develop data ingestion frameworks supporting batch, incremental and CDC patterns. * Build and optimise data pipelines across multiple source systems and platforms. * Design and implement data models for analytics, reporting and operational use cases. * Own CI/CD, automation and engineering best practice within the data platform. * Implement data governance, quality controls,...

Senior DevSecOps Engineer 6-Month Contract | Up to £680 per day | Outside IR35 | Hybrid We're looking for a Senior DevSecOps Engineer to support a major platform transformation programme, securing APIs, integrations, data flows and customer-facing digital journeys across a complex AWS and hybrid environment. Working closely with Engineering, Platform and Security teams, you'll help define and implement security standards across modern distributed applications, ensuring authentication, authorisation and integration security are built in from day one. Key Skills & Experience Strong background in DevSecOps, Application Security or Integration Security. Expertise in OAuth2, OIDC, JWT and API Security . Strong knowledge of OWASP Top 10 and OWASP API Security Top 10 . Experience securing AWS environments, including IAM, networking and hybrid integrations. Ability to review code across Java, Kotlin, TypeScript, .NET or Python. Experience embedding security testing...

Senior DevSecOps Engineer 6-Month Contract | Up to £680 per day | Outside IR35 | Hybrid We 're looking for a Senior DevSecOps Engineer to support a major platform transformation programme, securing APIs, integrations, data flows and customer-facing digital journeys across a complex AWS and hybrid environment. Working closely with Engineering, Platform and Security teams, you 'll help define and implement security standards across modern distributed applications, ensuring authentication, authorisation and integration security are built in from day one. Key Skills & Experience Strong background in DevSecOps, Application Security or Integration Security. Expertise in OAuth2, OIDC, JWT and API Security . Strong knowledge of OWASP Top 10 and OWASP API Security Top 10 . Experience securing AWS environments, including IAM, networking and hybrid integrations. Ability to review code across Java, Kotlin, TypeScript, .NET or Python....

Azure Platform Engineer | Contract | Outside IR35 Outside IR35 | London Market Insurance We are working with a leading London Market insurer looking for an experienced Azure Platform Engineer to deliver a new cloud sandbox platform. This is a hands on engineering assignment focused on building a secure, automated Azure environment that allows development and technology teams to provision temporary infrastructure for testing, experimentation and proof of concept activities. The platform architecture and strategy have already been defined. The successful contractor will take ownership of the technical implementation, automation and delivery through to operational handover. Key Responsibilities Build and configure Azure infrastructure to support secure, isolated sandbox environments. Develop reusable Terraform modules and Ansible playbooks to automate infrastructure provisioning. Implement automated deployment workflows using GitHub Enterprise and GitHub Actions....

Senior & Principal AI Delivery Consultants - Capital Markets Outside IR35 and Hybrid Working Location: London Start date: ASAP Contract requirement: 2-4 consultants, with the strongest two candidates prioritised for initial presentation. We are supporting a Tier-1 global financial institution looking to bring in experienced AI consultants who have successfully delivered commercial AI solutions into live production environments. The bank has several AI initiatives underway but needs additional engineering capacity to move projects beyond experimentation and into production. Previous permanent hiring efforts have not filled the requirement, so the priority is to identify high-quality consultants who can start quickly and deliver from day one. These are hands-on delivery roles, not research, advisory or proof-of-concept positions. Consultants will be responsible for designing and building AI solutions, integrating them into the bank's existing technology...

6 month contract, fully remote Full Stack Developer - .NET and React Up to £350 per day outside IR35 A retail company are hiring for a Senior Full Stack Engineer to join their order fulfilment team to help design, build and evolve the digital platform. This is a hands-on role where you'll work closely with product and engineering teams to solve real business problems and deliver impactful digital experiences. It is a modern engineering function that uses agentic AI tools throughout its development process. Responsibilities Design build and maintain scalable secure and high-performing E-commerce applications using React C# .NET and Azure Deliver end-to-end features across the stack from Front End experience through to Back End services Work in short iterative cycles alongside product and E-commerce teams Contribute to the design of cloud-native architectures on Microsoft Azure Build and maintain robust APIs and services using .NET Develop responsive...