90 senior platform engineer jobs found

Platform Engineer | Trading Firm Central London | 3 days on site Outside IR35 | Up to £650 per day A trading firm in central London has rolled out a business wide data platform and now needs a senior Platform Engineer to take full control of the platform layer. Kubernetes is the heart of this environment and they need someone who can run it with confidence, precision and zero drama. What they need you to bring Serious Kubernetes depth covering cluster design, workload orchestration, autoscaling strategies, multi cluster operations, network policy, resource tuning and deep debugging across pods, nodes and the control plane Deep Linux fluency with the ability to harden, tune and own production environments from top to bottom Strong SQL engineering skills covering schema design, performance tuning and high throughput optimisation Solid C# background with clean, maintainable service patterns Ability to design, build and refine CI/CD...

Senior Infrastructure Engineer - Farnborough - Highest Security Clearance Required - £550 - £650 Outside IR35 A growing technology organisation operating within highly secure environments is looking to hire both Mid-Level and Senior Infrastructure Engineers to support and evolve critical infrastructure platforms across complex programmes. These opportunities suit engineers who enjoy working in security-conscious environments where resilience, availability and compliance are central to day-to-day operations. Senior Infrastructure Engineer The senior role is suited to experienced infrastructure engineers capable of leading technical delivery, mentoring others and owning critical infrastructure services. You'll ideally have: Experience designing and delivering secure infrastructure solutions Strong ownership across infrastructure lifecycle management Ability to lead technical problem solving and platform improvement initiatives Experience working within highly secure or...

Fully Remote | Outside IR35 | Immediate Start I am working with an award winning UK business operating at a significant scale with a large turnover, stable leadership and exciting project pipeline. They pride themselves on being honest, hard working and have high standards. This company really value fast paced people who quite simply - get things done. They are looking for a genuinely strong Data Engineer to come in and finish a Microsoft Fabric implementation properly. Not manage it. Not sit in meetings all day. Not produce PowerPoints. We need someone who can roll their sleeves up and do the work. This role has immediate visibility with senior leadership and, for the right person, could start tomorrow. They have a platform built that has ingested their ERP data source and in reality it is 90% there. The product is functional but they want it take to the next level. They want an experienced engineer who can come in, assess the product quickly, fix it and move it...

We're looking for an experienced Data Modeller to join a high-impact data engineering team working on a modern Lakehouse platform built on Databricks. The Role You'll be responsible for designing and implementing robust data models within a Medallion architecture (Bronze / Silver / Gold), ensuring data flows efficiently and reliably across the platform. This is a hands-on role requiring both deep technical expertise and the ability to work closely with engineering and business stakeholders. What You'll Be Doing Designing and owning data models across the Medallion architecture layers Working with Delta Lake, Delta Live Tables, and Unity Catalog to build scalable, well-governed data assets Collaborating with data engineers and analysts to ensure models meet downstream reporting and analytics needs Applying best practices in data modelling - dimensional, data vault, or relational - within a cloud-native Lakehouse environment Contributing to data governance,...

Senior Infrastructure Engineer - Farnborough - Highest Security Clearance Required - £550 - £650 Outside IR35 A growing technology organisation operating within highly secure environments is looking to hire both Mid-Level and Senior Infrastructure Engineers to support and evolve critical infrastructure platforms across complex programmes. These opportunities suit engineers who enjoy working in security-conscious environments where resilience, availability and compliance are central to day-to-day operations. Senior Infrastructure Engineer The senior role is suited to experienced infrastructure engineers capable of leading technical delivery, mentoring others and owning critical infrastructure services. You'll ideally have: Experience designing and delivering secure infrastructure solutions Strong ownership across infrastructure lifecycle management Ability to lead technical problem solving and platform improvement initiatives Experience working within highly secure or...

SENIOR APPLICATION SECURITY ENGINEER AGENTIC AI SECURITY PLATFORM £800 - 900 per Day (Dependent on Experience) Our Client is a major Financial Services Organisation undertaking a major Security Architecture Programme. They are now entering the Production Build Phase of an Agentic Application Security Agent that will fundamentally change how their Application Security is Delivered within the SDLC click apply for full job details

Senior z/Linux Engineer (RHEL/IBM Z) DURATION: Initial 6 months (likely extension) LOCATION: Leeds OR Edinburgh OR Manchester OR Halifax ONSITE REQUIREMENTS: Hybrid - 2 days onsite per week (local office) ENGAGEMENT TYPE: Outside IR35 DAY RATE: Market rates (Competitive) LEGAL RIGHT TO WORK: Candidates must have the legal right to work in the UK. Unfortunately, sponsorship is not available for this role. ATRIUM GLOBAL SUMMARY Atrium Global is supporting a client in the financial services sector in hiring a Senior z/Linux Engineer to join their Core Infrastructure Platform team within Mainframe Services. JOB OVERVIEW This role is focused on the support, stability and continuous improvement of enterprise Linux environments running on IBM Z. You will work across a highly regulated, mission-critical platform, primarily supporting RHEL-based z/Linux systems under z/VM. This is a Linux-first role, requiring strong hands-on system administration experience within enterprise...

Senior AI Engineer Up to £900/day (Outside IR35) 6 months contract UK - Fully Remote We are working with a UK-based prop-tech business building a production-grade autonomous AI agent platform used by professionals in a high-transaction environment. They are looking for a Senior AI Engineer to take a hands-on role in the design and delivery of agentic AI systems, focused on workflow automation, intelligent decision support, and deep integration with an existing commercial platform. This is a delivery-focused contract role with genuine architectural responsibility. Role Overview You will design and implement autonomous and semi-autonomous AI agents that operate across customer workflows, ingest transactional data, and generate actionable insights. The work is firmly production-oriented, this is not a research or experimentation role. Key Responsibilities Agentic AI & Automation Design and implement AI agent architectures for autonomous...

Senior Software Engineer (Platform focused) | Contract | £500 per day Initial 3 month engagement | Outside IR35 | 3 days per week onsite central London Seed-stage AI-native company taking on a major UK regulated services market. Backed by top-tier European VCs, founders include the team behind one of the UK's best-known modern consumer brands. Public launch later this year. Working MVP exists. The job is to take it from prototype to the platform that supports launch and scale. You will: Design and own the architecture of the platform - the state machine, workflow engine, API layer and data model that orchestrate every transaction Own infrastructure, deployments and CI/CD - ensure the platform is reliable, scalable and fast as they grow from launch to thousands of concurrent transactions Build and maintain security practices appropriate for a regulated firm - data encryption, access controls, audit logging, penetration testing You'll need: 5+ years...

Contract | Senior Full Stack Developer Outside IR35 | £500–£600/day 6 months+ (3-5 year project) Greater Belfast Some contracts pay well. Some are interesting. This one is both. ViVA Tech Talent are working with a well-established technology company on a contract that's a little different. You won't be working from home, you won't be siloed into one layer, and you won't be wondering if anyone actually uses what you build. You'll be embedded in a specialist development workshop, working across a live, multi-tier visualisation platform — from high-level operational dashboards to real-time engineer-grade views. The data is live. The environment is real. The work matters. The stack React · TypeScript · Tailwind · Azure · Azure Data Explorer · KQL What they need Strong React/TypeScript — hooks, composition, async data fetching Production Azure experience KQL or strong SQL, willing to pick it up fast Daily hands-on use of AI coding agents — this...

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

Senior DevSecOps Engineer (Contract) Rate : Up to £350/day Outside IR35 Location : Fully Remote Contract Length : 3 months I'm looking for a hands-on Senior DevSecOps Engineer to support the modernisation of an application delivery platform, with a key focus on migrating workloads from Docker Compose to Kubernetes. This is a delivery-focused contract role requiring someone who can contribute immediately with minimal ramp-up. Key Responsibilities Migrate containerised applications from Docker Compose to Kubernetes Build and maintain secure CI/CD pipelines using Azure DevOps and GitLab CI/CD or Jenkins Implement DevSecOps and software supply chain security controls, including SAST, dependency scanning, container scanning, secrets detection, and image signing Improve deployment automation, release reliability, rollback, and traceability Troubleshoot CI/CD and Kubernetes deployment issues Collaborate with engineering, infrastructure, and security teams Required Skills...

MLOps Engineer, Palantir Platform Fully Remote 6 Month Contract Outside IR35 £550 to £650 per day The Company They are a large, data driven organisation operating at scale, with a strong focus on using advanced analytics and machine learning to inform decision making. The business invests heavily in its data platforms and engineering capability, creating an environment where robust MLOps practices are essential. Teams are collaborative, delivery focused and used to working with senior technical stakeholders. The Role and Deliverables Design, build and maintain MLOps pipelines on the Palantir Foundry platform. Enable reliable deployment, monitoring and retraining of machine learning models in production. Partner with data scientists and engineers to operationalise models efficiently. Implement best practices around CI/CD, model versioning and data quality. Support platform optimisation, scalability and reliability across...

Senior Data Engineer (Contract) Remote (UK) 10 months £600 - £650 per day OUTSIDE IR35 A leading data consultancy is partnering with a large enterprise organisation to deliver a major cloud data platform programme. As part of this transformation, we are looking to bring in an experienced Snowflake Technical Lead to take full ownership of a key delivery workstream. This is a genuinely hands-on leadership role. It is best suited to an engineer who enjoys designing and building production-grade data solutions, rather than someone who wants to operate purely in architecture review or governance discussions. You will be trusted with real autonomy over implementation decisions while remaining clearly accountable for delivery outcomes Project Context This is a decommissioning and migration project. The organisation is retiring a legacy data setup and rebuilding its pipelines on Snowflake. The work spans the full picture, with a meaningful element of data modelling...

Infrastructure Engineer - Farnborough - Highest Security Clearance Required - £550 - £650 Outside IR35 Mid-Level Infrastructure Engineer Senior Infrastructure Engineer A growing technology organisation operating within highly secure environments is looking to hire both Mid-Level and Senior Infrastructure Engineers to support and evolve critical infrastructure platforms across complex programmes. These opportunities suit engineers who enjoy working in security-conscious environments where resilience, availability and compliance are central to day-to-day operations. Infrastructure Engineer The mid-level role is suited to engineers looking to deepen their experience within complex, high-security environments while working alongside senior technical teams. You'll ideally have: Experience supporting enterprise infrastructure environments Strong troubleshooting and operational support capability Exposure to virtualisation, networking and secure systems...

Senior Integration Engineer — Critical Infrastructure & OT Location:  Based in either London or Lisburn. Project-based travel between the two — typically a few days at a time, not long-term relocation. UK-wide and occasional European travel on live projects. Engagement : 12-month initial contract, renewable. B2B, weekly GBP, outside IR35. Day rate : £700 – £750 per day, benchmarked deliberately above market. Travel, accommodation and subsistence covered on site-based work. About OKTO: OKTO Integrated Services has spent 33 years delivering complex multi-system integration on projects where the technology has to be invisible and the user experience uncompromising — luxury hospitality (Hilton Waldorf Astoria at Admiralty Arch, The Peninsula London), superprime residential (Mayfair Park Residences, 80 Holland Park, Forbes House) and high-profile corporate clients (Manchester United, Allstate). We are now extending this...

Senior Data Engineer (Contract) Remote (UK) 10 months £600 - £650 per day OUTSIDE IR35 A leading data consultancy is partnering with a large enterprise organisation to deliver a major cloud data platform programme. As part of this transformation, we are looking to bring in an experienced Snowflake Technical Lead to take full ownership of a key delivery workstream. This is a genuinely hands-on leadership role. It is best suited to an engineer who enjoys designing and building production-grade data solutions, rather than someone who wants to operate purely in architecture review or governance discussions. You will be trusted with real autonomy over implementation decisions while remaining clearly accountable for delivery outcomes Project Context This is a decommissioning and migration project. The organisation is retiring a Legacy data setup and rebuilding its pipelines on Snowflake. The work spans the full picture, with a meaningful element of data modelling and design...

UK | Fully Remote (UK-based) Staff/Principal Backend Engineer (Contract) 6 months | £900/day (Outside IR35) High-growth Product Engineering Team Please read the requirements carefully before applying. Build and evolve a core CRM product used across the business. We're supporting a product-led organisation that is rebuilding and modernising key areas of an existing CRM platform. This role suits an experienced contractor who enjoys working in brownfield environments, partnering closely with the business, and shaping how a product evolves rather than just delivering tickets. You'll operate as a senior, hands-on engineer within a growing engineering group, working closely with senior leadership to take the product from where it is today to where it needs to be next. The role This is a product-focused Back End engineering role , not a pure delivery position. You'll be responsible for rebuilding and enhancing existing CRM capabilities within a live...

?? Alteryx Lead ?? Flexible | ? 3-Month Contract | ?? Outside IR35 We're looking for a seasoned Alteryx expert to lead a high-impact transformation project-moving a complex, one-off book profitability model into a scalable, BAU-ready solution. ?? A leading consulting firm has built a sophisticated Python-based profitability cube. Now we need you to operationalise it-leveraging Alteryx (with Python where needed) to create a robust, automated, and auditable solution for Finance. ?? What you'll be doing Turn manual into magic: Build production-grade Alteryx workflows that replace spreadsheets with reliable, auditable automation across reconciliations, close, and forecasting Own the platform: Manage Alteryx Server (scheduling, permissions, monitoring) and ensure secure, SOX-ready governance (SSO/IAM, audit trails) Engineer accuracy: Design strong data pipelines using advanced SQL (joins, CTEs, window functions), reconciliation checks, and incremental loads Keep...

SC-Cleared Full-Stack Engineer Outside IR35 Remote | Initial 2 months, extension expected We are recruiting an SC-cleared Full-Stack Engineer to support a major digital delivery programme within a regulated environment, focused on building and enhancing a modern platform using React/Next.js, .NET microservices and Azure. This role requires more than someone who can sit purely Front End or back-end. You will need to take ownership across the full stack, build new features and data models, support integration activity, and work at pace towards a key release milestone. Working closely with engineering, delivery and product stakeholders, you will support greenfield development across new pages, services, integrations and platform functionality. The role is fully remote and UK-based, with no ongoing onsite requirement, although a laptop will need to be collected near Gatwick Airport on the start date. Responsibilities Build and maintain full-stack applications using...