30 senior systems engineer jobs found

AI Application/Big Data Engineer 6-Month contract - Inside IR35 - market rate London based - hybrid working - up to 3 days a week onsite Finance sector - must have previous experience Role Overview Senior AI / Data Engineer responsible for designing, building, and optimizing AI-driven data pipelines and integrations to enable a QAS-powered response suggestion capability embedded in Salesforce Service Cloud. The role focuses on scalable data processing, LLM integration, and continuous model improvement using production telemetry. Responsibilities Design and implement Salesforce ↔ QAS integration architecture Build and optimize data pipelines supporting AI inference and feedback loops Develop backend services / APIs enabling response suggestion workflows Integrate LLM capabilities (Amazon Bedrock) for response generation and embeddings Enable continuous model tuning via: telemetry data quality scoring usage analytics Work with structured and unstructured data sources:...

Contract Ruby Tech Lead (Startup) Location: Remote / London Hybrid (optional) Contract Length: 3–6 months (with potential extension) 🌱 About the Role We’re partnering with a fast-growing startup on a mission to build a high-impact product used by thousands of customers. They’re now looking for a hands-on Ruby Tech Lead to step in on a contract basis and drive technical direction, delivery, and team alignment during a key growth phase. This is a high-ownership role where you’ll influence architecture, mentor engineers, and help scale both the platform and engineering practices. 🛠 What You’ll Be Doing Lead the design and delivery of scalable, high-performance systems using Ruby (Ruby on Rails) Provide technical leadership to a small but growing engineering team Own architecture decisions and help evolve the platform as it scales Collaborate closely with Product, Design, and Leadership stakeholders Drive best practices around code quality, testing, and deployment Contribute...

Job title: Senior Backend Engineer with Content delivery experience Location: Remote Duration: 06 months contract About the Position We're looking for a Senior Engineer with experience in automated CDN configuration management and/or a background in Content Delivery to join our CDN team. In this role, you will contribute to the development and optimization of the foundational infrastructure that powers our Media Delivery and play capabilities. Our team owns content delivery management and the internal platform offering, operating a multi-vendor setup behind the scenes to offer engineers a unified interface to manage their CDN configuration. You will collaborate within an agile, cross-functional team to design, build, and develop scalable infrastructure services and tools. What You'll Do Improve the core infrastructure systems that serve as the foundation for the rest of our backend. Build, support, and operate important central services and systems, keeping reliability,...

AI Engineer - LLM & Agentic Systems * London - Hybrid. * Circa £500 – £675 per day (and negotiable DOE) * Contract (Outside IR35) * Mid-level, Senior & Lead. * Agentic AI / Machine Learning. Company: Our client is a globally established B2B information and professional services business, operating across multiple high-value industry sectors. They have established data science and machine learning engineering teams already delivering in production, and are now expanding their AI capability significantly across the global organisation. This is a role for people who ship. If you've built LLM-powered systems and agentic workflows that are live in production - not demos, not prototypes - and you want to do that at genuine scale, this is worth applying for. What you'll be working on as an AI Engineer - LLM & Agentic Systems: * Designing and building AI agents and agentic workflows - combining LLMs, RAG, reasoning, memory and tool orchestration to solve...

Technical Manager High Performance Computing An exciting opportunity is available for an experienced Technical Manager - High Performance Computing to support the development and delivery of next-generation BEV and PHEV electrical/electronic architectures. This senior technical leadership role will focus on the delivery and integration of HCP4 systems, ensuring projects are delivered to timing, quality, and cost targets. The successful candidate will work cross-functionally across Engineering, Manufacturing, Quality, Suppliers, and wider Group stakeholders to support future vehicle technologies and electrical architectures. Key Responsibilities Technical ownership of HCP4 systems and related vehicle functions Delivery of software, hardware, and system integration activities Management of project timing, KPIs, budgets, and technical deliverables Cross-functional collaboration and supplier management Support technical roadmap development and future concept activities Lead issue...

Senior QA Automation / SDET Engineer (SC + NPPV3 Cleared) Birmingham 6 Month Contract £400-£450/day (Outside IR35) Hands on Senior QA Automation Engineer / SDET (Software Development Engineer in Test) engineer needed with both SC and NPPV3 Security Clearance, plus strong hands-on experience with JUnit, Cucumber, and Selenium WebDriver. 6 Month Rolling Contract based in Birmingham. Start ASAP in May/June 2026. Hybrid Working – 3 days/week remote (WFH) + 2 days/week working from the office in Birmingham with occasional travel to Croydon. A chance to work with a leading global IT transformation business specialising in large-scale Government projects: Key skills, experience + duties to include: Extensive hands-on experience with JUnit, Cucumber, and Selenium WebDriver within complex enterprise environments. Strong understanding of Spring applications, microservices, and distributed architectures. Good understanding in PostgreSQL, including query optimisation, performance...

Job Title: Software and Systems Test Coordination Engineer Location: Gaydon, Warwickshire Rate: £33.88ph via an Umbrella Company (Inside IR35) or £25.26ph on a PAYE basis Employment Type: Contract (Currently financed until March 2027) Hours: Standard 40 Hours Per Week Reference: J(phone number removed) Position Description: Duties: This role (Software and systems test coordination engineer) is responsible for overseeing the overall testing status of the EVA25 programs. While the role demands a high level of technical understanding, it is not hands-on testing role. The successful candidate will ensure consistent adherence to established processes, effective utilisation of issue management tools and clear and transparent reporting to senior stakeholders. Key aspects of this role involves the ability to drive and prioritise actions and process changes based on clear KPIs around testing management with stakeholders across the company. Strong skills in developing metrics,...

Senior Software Engineer (FTC up to 12 months) £50,000 - £60,000 per annum IT Function 37.5 hours per week Hybrid (UK-based) Fixed Term Contract (up to 12 months) Take Ownership in a High-Impact Fintech Environment Looking for your next move where you can lead on complex engineering challenges, influence technical direction, and deliver real impact? We're looking for a Senior Software Engineer to join a growing fintech environment, working on secure, scalable systems that support real-world financial services. Operating within a modern, Agile product environment, you'll play a key role in delivering high-performance platforms handling large-scale transactions, while mentoring others and driving technical excellence across the team. This is a fantastic opportunity to step into a senior role with genuine ownership and influence. What You'll Be Doing Delivering High-Quality Engineering Solutions Design, develop, and deliver robust, scalable software solutions Translate...

Job Title: Senior Backend Engineer Job DescriptionJoin our dynamic team as a Senior Backend Engineer in the Banking domain, where you will play a crucial role in delivering innovative solutions. Collaborate with product owners and business stakeholders to transform written requirements into robust, well-engineered solutions. Your responsibilities will include maintaining and enhancing code quality, automated testing, and comprehensive documentation. Responsibilities Collaborate with product owners and business members to translate requirements into effective solutions. Maintain and improve existing code quality, ensuring robustness and efficiency. Implement automated testing processes and comprehensive documentation. Work with event-driven systems, such as Kafka, to ensure seamless operations. Operate services within Kubernetes environments, ensuring optimal performance. Utilise CI/CD pipelines for efficient deployment and infrastructure management. Leverage cloud platforms, with...

Data Engineer Lead - Tier 1 Bank - London - 6 months Role - Data Engineer Lead Rate - £700 per day (Inside IR35) Duration - 6 months with very likely extension Location - Hybrid / Liverpool Street - 3 days per week in an office in Liverpool Street (London) Role The Data Engineer Lead is responsible for designing, building, and supporting modern data platform, with a particular focus on Databricks, cloud-based data engineering, and leading the migration of legacy Oracle systems into scalable, cloud-native environments. The role supports the organisation's data strategy especially on Finance and Regulatory domain by ensuring high-quality, reliable pipelines and data models that enable analytics, regulatory reporting, and data-driven decision-making. The post holder plays a key leadership role within the Data Engineering function, shaping architectural direction, ensuring engineering excellence, and partnering with Technology, Architecture, and Business teams across the...

Expleo is seeking a Software & Systems Test Coordination Engineer to support a major engineering programme. This is an exciting opportunity to play a key role in coordinating and overseeing testing activities, ensuring alignment, transparency, and high-quality delivery across multiple stakeholders. This role requires a strong technical understanding of software and systems testing; however, it is not a hands-on testing position. The focus is on coordination, governance, and driving performance through data, reporting, and stakeholder engagement. 📅 Contract: 12 Months 📍 Warwickshire (Hybrid/Onsite as required) 💷 Rate: £33.88 per hour (Inside IR35) Key Responsibilities Oversee and report on the overall testing status of programmes Ensure adherence to established testing processes, standards, and governance frameworks Drive issue management activities, including tracking, prioritisation, and resolution Maintain and update issue registers and tracking systems with accuracy...

Expleo is seeking a Software & Systems Defect Coordination Engineer to support a key customer based in Warwickshire. This is an excellent opportunity for an individual with strong technical insight and stakeholder management skills to play a pivotal role in ensuring the effective management of defects across complex systems. Location: Warwickshire Contract: 12 Months (Umbrella Rate: £33.88 per hour) Role Purpose You will be responsible for overseeing the end-to-end lifecycle of software and system defects, ensuring timely identification, tracking, prioritisation, and resolution. While this role requires a solid technical foundation, it is primarily coordination and process-driven rather than hands-on development. Key Responsibilities Coordinate and manage the identification, tracking, and resolution of defects across complex systems Ensure adherence to defined defect management processes and governance frameworks Drive defect resolution through effective collaboration...

Senior Data Engineer Location: Bristol Contract: Outside IR35 Rate: £68 per hour Security Clearance: DV Cleared Working Pattern: 5 Days On Site Nationality Requirement: Sole British Nationals Only THE ROLE We are recruiting on behalf of a highly secure engineering and technology programme seeking an experienced Senior Data Engineer to support the design, development and delivery of secure, scalable and high-performance data solutions within a regulated environment. This role will focus heavily on the Elastic Stack and Apache NiFi, supporting enterprise-scale data ingestion, transformation and analytics capabilities across complex secure systems. The successful candidate will play a key role in architecting resilient data platforms, optimising real-time and batch processing pipelines, and ensuring compliance with strict governance and security standards. KEY RESPONSIBILITIES Data Architecture & Engineering - Design and implement scalable, resilient data pipeline...

Senior Software Engineer in Test  Certain Advantage are recruiting on behalf of our globally renowned brand for a Senior Software Engineer in Test. This is a temporary contract inside IR35 initially until March 2027 working a couple of days onsite per month in Manchester for meet ups. We’re seeking Engineers who can offer demonstrable experience in developing and testing bespoke cloud-native applications; programming with Java, Python (or another OO language) utilising quality tools like SonarQube, with proven experience of automated software testing. If you embrace quality-first coding and want to work on real projects alongside experienced engineers with iterative and agile processes, please apply! Key Responsibilities Define and implement testing for cloud systems (platform and APIs) in an agile manner Implement testing frameworks; utilising automation tools where possible. Support the investigate and resolution of issues. Work closely with the SRE team to develop...

Senior Data Engineer – (Tick data, Time-Series; kdb+ / Q ) 3-6 months initially. London 3 days onsite   Are you a Data Engineer with a background in systematic trading who has worked with granular tick market data? Have you built pipelines to allow tick data to be ingested into a time series tech stack utilising kdb+ and Q? If so keep reading!   Certain Advantage are recruiting on behalf of our London based trading client for a Data Engineer to focus on building a scalable data platform for algorithmic trading.   You’ll Identify and implement solutions for Quants and Traders, providing data that will be used to improve strategies performance and produce clients TCA, pre- and post- trade analytics.   Your Project Work: Identify and implement solutions to provide data that will be used to improve strategies performance and produce clients TCA, pre- and post- trade analytics. Work with business Stakeholders to build new and maintain existing real-time and historical data services and...

Software Engineering Manager Certain Advantage is hiring for a Software Engineering Manager based in the Farnborough area. This role is on a contract basis and is site-based. The Company We’re working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver industry-leading commercial aircraft, and a separate Space and Defence division. Does this sound like your next career move? If you’re ambitious to grow, this may be your next role? The Role: This role is for a Software Engineering Manager—someone ambitious and ready to make an impact. You’ll be results-oriented and driven to succeed. You’ll be working in a small, experienced, and collaborative team, and be responsible for: Lead the day-to-day activities of the software team Plan, design, develop, verify, and integrate the software for the high-altitude, long-endurance Zephyr aircraft. Acting as the technical authority for software, ensuring compliance with safety, performance,...

Data Migration Architect 4 months - initially Bath - onsite 2/3 days per week £545 inside IR35 - umbrella only Active SC clearance required Technical Leadership Own the architecture and design of ETL frameworks for clinical data migrations Define migration patterns, tooling strategy, and deployment approach (batch, real-time, hybrid) Provide technical governance across all migration workstreams Lead architecture reviews, design assurance, and technical decision-making Mentor and guide Data Engineers, Architects, and SMEs across the programmeData Strategy & Planning Define end-to-end data migration strategy, including: Data extraction from legacy clinical systems Transformation rules and mapping specifications Data validation, reconciliation, and quality control frameworks Establish data standards, models, and governance principles aligned to healthcare regulations Develop migration roadmaps, including phasing, cutover strategy, and rollback planning Clinical Data...

Software Architect - SC Cleared Rate: £70/hr Duration: Initially 12 Months Location: Newcastle Working Pattern: three days a week on site Clearance: SC Clearance required You will join a global defence consultancy, delivering digital transformation to a public sector agency. Responsibilities Work with System Architects to translate business goals and high-level requirements into robust software architectures, balancing performance, security, reliability, and compliance Design scalable, flexible, and maintainable architectures for complex geospatial systems using the latest modern cloud based technologies and tools Identify technical risks early and define pragmatic mitigation strategies Work in an AGILE scrum team, collaborating closely with software engineers, testers and the Product Owner, providing clear guidance and hands-on architectural support Collaborate with development teams to select appropriate technologies, frameworks, and patterns Ensure delivered solutions...

Cloud Platform Engineer - Energy / Oil and Gas, Azure, AWS Up to £700 per day UK (Remote) 6 - 12 months My client is a high profile Consultancy who urgently require a Cloud Platform Engineer with proven Energy / Oil & Gas industry experience, along with strong Azure (and ideally AWS too) expertise and proven experience with FinOps, Infrastructure as Code (IaC), Configuration Management, and modern CI/CD platforms and workflows. Key Requirements: Proven experience as a Cloud Platform Engineer with proven Energy / Oil & Gas industry experience Expertise in Azure (hands-on Cloud Engineering) Proven experience with FinOps, Infrastructure as Code (IaC), Configuration Management, and modern CI/CD platforms and workflows Excellence in operational infrastructure support and maintenance (including cloud data centres) in the Energy / Oil & gas sector, covering systems such Server, Storage, Back-up & Recovery, SaaS, PaaS, IaaS and Security services Ability to help to...

Job Title: Technical Manager - Cockpit Architect Location: Crewe (Hybrid - 2 days onsite per week) Contract: Until 02/10/2026 Rate: £36.49 per hour PAYE Are you ready to take the wheel in shaping the future of vehicle design at Bentley Motors, an industry-leading organisation in the automotive sector. Join our dynamic team as a Technical Manager - Cockpit Architect, where your expertise will drive innovative solutions in the Cockpit & Seating Zone! Main Goals and Objectives: As a Concept Engineer, you will lead the specification and integration of complex design and technical requirements within our Vehicle Architecture team. Reporting to the Zone Leader, you will play a pivotal role in crafting cutting-edge vehicle concepts tailored to meet our customers' needs. We're committed to delivering exceptional solutions throughout the development process, ensuring adherence to timelines and quality standards. Key Responsibilities: 1. Lead Concept Design Development: -...