12 senior platform engineer jobs found in London

Senior ML Platform Engineer London 5 Days a Week In Office £550- £700 Per Day, Outside IR35 Immediate Start The Company They are a technically ambitious organisation building advanced machine learning systems tightly integrated with real-world systems. Their platform supports the full lifecycle from data collection through to large-scale training and deployment. Engineering quality, reliability, and thoughtful system design are core to how they operate. The Role and Deliverables Own and evolve the operator-facing platform, including web UIs, backend services, and CLI tooling used for live data collection and dataset workflows. Design and maintain robust recording and orchestration systems that scale across robots, sensors, and lab environments. Collaborate with the ML team on dataset builders, ingestion pipelines, and infrastructure supporting large-scale distributed training. Partner with robotics engineers on ROS2 integration,...

Senior Java Developer / AI Engineer - Design & Build Payment Product / Fintech / Banking. Spring Boot, Claude/Codex also essential. ANY PAYMENT PRODUCT CONSIDERD from Current Account OR SAVINGS OR ISA's OR Fixed Term Deposits, Lending etc. £600-£650/DAY OUTSIDE IR35 PAY. Our Fintech Challenger Bank client based in Central London seeks a dynamic, eager to learn and technically astute Java Software Engineer who has extensive experience in Designing & Building a Payment Product *NOT PAYMENT PLATFORM* so the ideal candidate will come from for e.g. a Challenger Bank or Fintech Payment Product Company. STRONG skills in Java, Spring Boot, AI (Claude or Codex), working in a Fintech Payment domain. YOU WILL NOT BE CONSIDERED IF YOU DO NOT HAVE FINTECH & DESIGN & BUILD PAYMENT PRODUCT EXPERIENCE WITH JAVA, SPRING & STRONG AI! Our client is hiring a hands-on SENIOR Software Engineer / Java Developer to support delivery and development of Savings products...

Senior Data Engineer - Contract (outside IR35) - up to £550 per day We’re hiring a Senior Data Engineer to join a leading global organisation, helping to build and enhance a modern data platform within the insurance sector. NB London Market Insurance experience is essential. If you do not have this experience, you will not be eligible for this role. The role You’ll design and develop data pipelines using ETL/ELT, ensuring strong standards in testing, reconciliation, and documentation. You’ll contribute to data modelling, support data delivery, and build APIs/services for stakeholders. You’ll also collaborate across teams, promote best practices, and mentor junior colleagues in an Agile environment. Key requirements London Market Insurance experience (must-have) Advanced T-SQL, SSIS, Azure Data Factory Power BI/SSRS, MDX/DAX Strong data modelling Experience with Azure & on-prem SQL Azure DevOps, data APIs, solid documentation/testing practices...

Principal/Lead Engineer Python/Cloud/Terraform/IAM/DevOps/infrastructure-as-a-code IaC Rate: Circa £600 - £700 PD (Outside IR35), 6 months Location: London/Hybrid x2 days We are seeking an experienced Principal/Lead Engineer to join a highly ambitious organisation building a large-scale, mission-critical data and technology platform. This is a unique opportunity to join at the earliest stages of a major programme and play a key role in shaping its technical foundations. Working closely with the CTO and a small team of senior engineers, you will lead the design and implementation of core infrastructure, establish engineering standards and practices, and make architectural decisions that will have long-term strategic impact. If you enjoy solving complex technical challenges, influencing technology strategy, and creating robust engineering foundations, this role offers an exceptional opportunity to make a lasting impact. Role & Responsibilities Technical Leadership...

Principal / Lead Engineer Python / Cloud / Terraform / IAM / DevOps / infrastructure-as-a-code IaC Rate: Circa £600 - £700 PD (Outside IR35), 6 Months Location: London / Hybrid x2 days We are seeking an experienced Principal / Lead Engineer to join a highly ambitious organisation building a large-scale, mission-critical data and technology platform. This is a unique opportunity to join at the earliest stages of a major programme and play a key role in shaping its technical foundations. Working closely with the CTO and a small team of senior engineers, you will lead the design and implementation of core infrastructure, establish engineering standards and practices, and make architectural decisions that will have long-term strategic impact. If you enjoy solving complex technical challenges, influencing technology strategy, and creating robust engineering foundations, this role offers an exceptional opportunity to make a lasting impact. Role &...

Data Engineer £550-600/day outside IR35 6-month contract Remote working Working with a FTSE 100 client who have a requirement for a hands-on Senior Data Engineer. The role will be involved in designing and delivering data models, integrations, orchestration pipelines, rule engines and contributing to the platform/infrastructure - MUST have Terraform experience. Data Engineer, key skills: MUST have experience using Terraform to build and manage IAC Proven experience with AWS (eg S3, Lambda, Glue etc) Background in building data pipelines, integrations and transformation layers Strong hands-on SQL experience Data modelling Data quality rules and validation frameworks Snowflake is massively desirable Data Engineer, AWS, Terraform, Snowflake Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and...

Data Engineer £550-600/day outside IR35 6-month contract Remote working Working with a FTSE 100 client who have a requirement for a hands-on Senior Data Engineer. The role will be involved in designing and delivering data models, integrations, orchestration pipelines, rule engines and contributing to the platform/infrastructure - MUST have Terraform experience. Data Engineer, key skills: MUST have experience using Terraform to build and manage IAC Proven experience with AWS (E.g S3, Lambda, Glue etc) Background in building data pipelines, integrations and transformation layers Strong hands-on SQL experience Data modelling Data quality rules and validation frameworks Snowflake is massively desirable Data Engineer, AWS, Terraform, Snowflake Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have...

AI Engineer | Hybrid | London | Outside IR35 | 6+ Months   Cititec are working with a global financial markets organisation on a large scale data and platform transformation.   They are looking for a Senior AI Engineer to help accelerate the migration of a complex data estate from Oracle to a Microsoft centric architecture across Azure, Cosmos DB, Microsoft Fabric and Azure Data Factory.   The role will focus on applying AI and GenAI to improve developer productivity and engineering throughput, particularly across data migration, code generation and developer tooling. This includes deploying AI agents and AI assisted development tools within the Azure ecosystem.   This is a high impact role operating across a large engineering environment, helping scale modern engineering practices and AI enabled development across a significant developer base.   Job ID  1

Mobile Engineer (iOS/Android) - Contract Location: London (2/3 days per week onsite) Contract Length: 6 months initial (likely extension through to year-end) Rate: Up to £600 per day IR35: Outside IR35 We're supporting a leading technology organisation that is looking for a Mobile Engineer to provide technical leadership across a portfolio of mobile initiatives. This is a unique opportunity for someone who sits between architecture, engineering, and delivery. The role is not focused on writing code day-to-day, but it does require someone with sufficient technical depth to challenge engineering decisions, assess delivery quality, and guide teams towards the right technical outcomes. You'll be joining an environment with significant mobile project demand and multiple delivery workstreams already underway. The challenge isn't a lack of engineering capacity - it's ensuring delivery teams are building the right solutions, following appropriate architectural patterns, and...

Principal Product Designer (Interaction Design UX & Design Systems) £550 - £650 per day (Outside IR35) London (Hybrid) x2 days onsite 6 month contract Overview We are looking for an exceptional Principal Product Designer to join an exciting organisation building a large-scale digital platform from the ground up. This is a rare opportunity to define the visual and interaction design language of a greenfield product ecosystem. Working closely with senior product, engineering, and leadership teams, you will shape how users experience the platform, establish design standards, and create the foundations of a scalable design system. The ideal candidate combines outstanding visual craft with strong interaction design expertise and thrives in environments where they can influence both product direction and design culture. Role & Responsibilities Own and evolve the visual and interaction design language across a suite of digital products...

Principal Product Designer (Interaction Design UX & Design Systems) £600 - £650 per day (Outside IR35) London (Hybrid) x2 days onsite Overview We are looking for an exceptional Principal Product Designer to join an exciting organisation building a large-scale digital platform from the ground up. This is a rare opportunity to define the visual and interaction design language of a greenfield product ecosystem. Working closely with senior product, engineering, and leadership teams, you will shape how users experience the platform, establish design standards, and create the foundations of a scalable design system. The ideal candidate combines outstanding visual craft with strong interaction design expertise and thrives in environments where they can influence both product direction and design culture. Role & Responsibilities Own and evolve the visual and interaction design language across a suite of digital products Create high-fidelity designs,...

AWS DevOps Engineer | £600 - £635 We're working with a leading specialist technical consultancy delivering high-impact digital transformation for the UK's most critical public sector projects on this exciting opportunity. We are seeking a heavyweight AWS DevOps Engineer to take full ownership of cloud infrastructure and testing lifecycles within a secure government environment. This is a high-autonomy role where you will leverage Kubernetes, Terraform, and advanced CI/CD patterns to build resilient, scalable public sector services from the ground up. The Role Lead the design and implementation of highly secure AWS cloud architecture spanning compute, storage, and networking. Deliver robust Infrastructure as Code (IaC) using Terraform, CloudFormation, or Ansible to ensure repeatable, audited environments. Build and orchestrate containerised workloads using Docker and Kubernetes to drive service efficiency. Architect and maintain sophisticated CI/CD pipelines across...