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Contractor 35
Information Technology senior engineer

35 senior engineer jobs found

CL
May 23, 2026  
Senior Software Engineer
Looking for a Senior Java Developer that has worked with Kotlin. The ideal candidate should be passionate about clean code and scalable solutions. This opportunity will allow you to design robust Microservices Architecture, within an automated data-heavy environment. * This will be an initial 6 month contract with possible extensions (OUTSIDE IR35) * Remote with occacional trips to London (1 day per month) Required Skills * Java, Spring, Spring Boot * Experience working with DevOps methodologies and scalable CI/CD pipelines * Microservices Architecture * Exposure to Big Data technologies such as: Kafka, Spark, Hadoop etc * Strong understanding of clean code principles * Experience working with AWS Cloud * Kotlin experience (preferred)
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
May 22, 2026  
Senior Full Stack Engineer
Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job Title: Senior Full Stack Engineer Location: London 4-5 days in office Contract: 12 months contract Rate: £100 per hours inside umbrella As a senior full stack engineer you will be instrumental in designing and developing web font-ends and back-end services for a new platform built to automate the management of the full lifecycle of complex private assets. Your expertise is expected to be pivotal in ensuring usability, scalability, performance and resilience of this high-profile platform. Job Responsibilities: * Collaborate closely with cross-functional team, including...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 20, 2026  
Senior Golang Engineer
Senior Software Engineer - Golang Information Security £650 per day - Inside IR35 3 days per week on-site, 2 days WFH 3 Month rolling contract up to 2 years Job Summary The Information Security team is responsible for developing services to find and mitigate security risks faced. We are seeking an extraordinary Software Engineer who is passionate about security and can thrive in a fast-paced environment where both individual drive and team collaboration are the keys to success. As part of the Information Security team, you'll be at the forefront of developing cutting-edge services to identify and mitigate security risks. This is a technical hands-on role that is focused on security across all of the organisation. You'll be working to identify problems, establish a vision for how to address those problems, and unite the relevant owners within the business on achieving that vision. Description In this role you will architect and develop distributed and scalable services...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
May 17, 2026  
Senior Data Engineer
Job title: Senior Data Engineer Location: London - Hybrid 2/3 days on site Duration: 6-12 months initially This is for a Senior, Experienced Data Engineer role to support Strategic Platform build, as part of Integrated Financial Crime Programme This role will be producing design and support for POC build this year. Strong knowledge of data governance, metadata management, data quality, and data mesh concepts, with the ability to influence enterprise-wide adoption. Ability to communicate complex technical concepts clearly to senior leadership, influencing architectural and investment decisions. Deep expertise in cloud data architecture and distributed computing paradigms, with strong hands‑on background in AWS data platforms, including Glue, Lambda, S3, Redshift, Athena, and Databricks. Modern Data Stack: Understanding of data Lakehouse architectures (Delta Lake, Iceberg) & experience with containerization using Docker. Including architecture design, data modelling,...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 17, 2026  
Senior Automation Engineer (DevOps)
Senior Automation Tools Engineer (Contract) Inside IR35 - £550-£570 per day Cambridge Hybrid 2-3 days per week We’re seeking an experienced Senior Automation Tools Engineer to join a high-impact Automation Tools team on a contract basis. This is an opportunity to play a key role in building and scaling automation frameworks that drive reliability, performance, and efficiency across a complex hybrid infrastructure. You’ll work closely with Engineering, DevOps, IT, and Operations teams to streamline deployment and configuration processes, enabling robust system management across large-scale environments. What you’ll be doing: Design, build, and maintain automation frameworks across a hybrid estate and compute clusters Develop Infrastructure as Code (IaC) solutions using tools like Ansible, Puppet, Terraform, and GitLab Integrate automation into CI/CD pipelines to accelerate and improve deployment processes Troubleshoot infrastructure challenges and implement automated fixes to...
IR35 Status:
Inside IR35

CV-Library Cambridgeshire, UK Contractor
CL
May 17, 2026  
Senior Information Technology Engineer
Senior Information Technology Engineer £250 PD to £300 PD | Inside IR35 | 2-month rolling contract with scope to move into permenant Our trusted client is looking for a hands-on Senior IT Support Engineer to join an internal IT team, supporting users and systems across a varied environment to provide 2nd to 3rd line support within a Microsoft environment. The Role Reporting to the IT Manager, you’ll deliver 2nd line support across desktops, servers, mobile devices, applications, and cloud infrastructure (Azure). You’ll manage helpdesk tickets, support site setups, maintain Active Directory, and ensure IT services run smoothly across head office and construction sites. This role is 5 days onsite in Maidstone, Kent with scope to potentially move into a permanent position. Key Responsibilities Provide 1st & 2nd line IT support and escalate to 3rd line where required Support MS 365, Exchange, Mimecast, Azure, and core IT systems Assist with site setups, networks, mobile...
IR35 Status:
Inside IR35

CV-Library Maidstone, UK Contractor
CL
May 17, 2026  
Senior Software Test Engineer
Senior Software Test Engineer– Leamington Spa | Contract- Competitive Rates Hexwired has partnered with a company who are a leading company in the Electronics Manufacturing. They are looking for a Senior Software Test Engineer who will be working on mobile apps and embedded software effectively. Although you will be working in a team you should be able to work under your own steam. Key skills required for this role: * Experience in Manual testing on mobile apps such as feature, regression and stress testing * Strong problem-solving abilities with excellent analytical and technical troubleshooting skills * Solid knowledge and hands-on experience in developing comprehensive test plans and regression test suites * Proven experience executing tests covering functionality, usability, performance, and REST APIs * ISTQB or equivalent testing certification * Bachelor’s degree in Computer Science or a related discipline The rate for this Senior Software Test Engineer...
IR35 Status:
Unknown Status

CV-Library Royal Leamington Spa, Warwickshire Contractor
CL
May 17, 2026  
Senior ITSM Engineer
Senior ITSM Engineer Must have an Active DV Clearance 4 Day weeks are available Senior ITSM Engineer Opportunity An opportunity exists for an experienced Senior ITSM Engineer to join a specialist ITSM Tooling team delivering enterprise service management solutions within secure Defence environments. The Senior ITSM Engineer will support the development, implementation and optimisation of ITSM tooling across multiple programmes and customer environments. The Senior ITSM Engineer will work as part of an Agile delivery team producing build documentation, configuration standards and implementation plans for complex ITSM platforms. This role suits a technically strong Senior ITSM Engineer who enjoys working with both traditional and modern service management tooling while delivering secure and resilient solutions. Senior ITSM Engineer Responsibilities Design, configure and deploy ITSM tooling solutions across secure environments. Produce build documentation, implementation plans...
IR35 Status:
Unknown Status

CV-Library Basingstoke, Hampshire Contractor
CL
Apr 08, 2026  
Senior Data Engineer
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...
IR35 Status:
Unknown Status

CV-Library Central London, London WC2N 5DU, UK Contractor
CL
May 23, 2026  
Backend Engineer
Senior Backend Engineer (Security Compliance) - 100% Remote The Role Join a high-autonomy team as a senior contractor architecting the next generation of our security compliance platform. You will own technical decisions end-to-end, building systems that ensure every production code change meets regulatory standards across thousands of repositories What You'll Do Architect & Build: Develop Java-based backend services (Spring Boot, Apollo) to enforce compliance controls within a GitHub Enterprise environment. Must have Skillset: Java, Springboot, GCP, GKE Who You Are Expert Developer: Java experience (Spring Boot, Bazel, Maven) with a focus on distributed services and Kubernetes (GKE). System Designer: Strong skills in API design (gRPC, GraphQL, REST) and relational databases like PostgreSQL. Cloud Proficient: Hands-on experience with GCP services, including BigQuery and Cloud SQL. Security Minded: Experience with (or strong interest in) security compliance engineering...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 22, 2026  
Data Engineer (Spark/ Kubernetes) (Financial Services)
Your new company Working for a renowned financial services organisation Your new role We are seeking a Data Engineer to support the replacement of a legacy ETL tool with a modern Apache Spark based data platform. This is a hands‑on engineering role focused on building and supporting Spark jobs, with an emphasis on performance, reliability, and scalability. The role is focused on building nonperformance Apache Spark jobs, with a strong emphasis on performance optimisation. Working in containerised environments using Kubernetes is a key element also as well as experience across Python/ Scala and Java. The role sits within a small Agile delivery team of four engineers (two onshore and two in Shenzhen), working closely with a Senior Data Engineer. You will be responsible for development work, sprint delivery, demos, documentation, and stakeholder engagement. This position suits a mid to senior level engineer with strong Spark development experience rather than design,...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 21, 2026  
Building and Construction Project Lead
Building and Construction Project Lead 12 month contract Based in Newport Offering £40ph Inside IR35 Are you an experienced Project Lead/Manager with construction experience? Do you have experience within Facilities Management? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Building and Construction Project Lead, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Develop, update/manage, and monitor a project delivery plan Identify and manage risks and opportunities Manage CAPEX business cases from preparation through approval to delivery and project close Develop detailed design briefs for Building Services design for a range of projects including...
IR35 Status:
Inside IR35

CV-Library Newport PO30, UK Contractor
CL
May 20, 2026  
Systems Engineer/Architect - SC Cleared
Systems Engineer/Architect - SC Cleared (Systems / Software / Infrastructure) End-to-End Technical Leadership Role Key Details Location: 2-3 days per week onsite, MOD Corsham Contract: 6 months Day Rate: £480 - £520 per day (Inside IR35) Clearance: Active SC Clearance requiredWe are seeking a Systems Engineer/Architect to take ownership of the end-to-end technical integrity, coherence, and long-term sustainability of a major digital service or programme. This is a pivotal leadership role at the centre of complex, multi-layered delivery. You will act as the senior technical conscience of the programme - ensuring engineering decisions are robust, joined-up, and capable of standing up in live operation, not just delivery. You will balance delivery pressure with engineering quality, ensuring the solution is secure, resilient, maintainable, and fit for long-term operational use. About the Role As the Senior Technical Authority, you will define and own the technical architecture...
IR35 Status:
Inside IR35

CV-Library Corsham, Wiltshire Contractor
CL
May 20, 2026  
Data Engineer - SC Cleared
Data Engineer (Hybrid | MOD Corsham) 💼 Role: Data Engineer 💰 Rate: £450-£500 per day Inside IR35 📍 Location: Hybrid - MOD Corsham 📅 Duration: 6-month contract 🔐 Clearance: Active SC Clearance required We're looking for an experienced Data Engineer to take on a senior technical authority role within a high-profile programme based at MOD Corsham. This position is ideal for someone who can lead end-to-end technical integrity while ensuring scalable, secure, and resilient data solutions. The Role: You'll act as the senior technical authority, accountable for the overall engineering direction and architecture across the full lifecycle. From concept through to live operations, you'll ensure alignment between systems, software, infrastructure, and integration-balancing delivery pressures with strong architectural and engineering standards. Key Responsibilities: Own the end-to-end technical architecture and engineering direction Ensure coherence across systems, software,...
IR35 Status:
Inside IR35

CV-Library Corsham, Wiltshire Contractor
CL
May 19, 2026  
SC Cleared Service Now Engineer
Senior ServiceNow Engineer (Contract) - Farnborough Our client, a reputable organisation, is hiring for a skilled Senior ServiceNow Engineer to join their team on a contract basis. This is an exciting opportunity to deliver impactful ServiceNow solutions that enhance platform maturity and support critical business initiatives. What you'll be doing: * Design and implement ServiceNow solutions, focusing on CSM and ITIL workflows, aligned with project milestones. * Lead integrations with enterprise platforms (CRM, ERP, third-party tools) using REST APIs and industry-standard patterns. * Develop technical designs, configurations, and build artefacts that are supportable and compliant with internal standards. * Configure and optimise workflows, business rules, notifications, UI policies, and forms to streamline IT and business processes. * Implement and refine Incident, Problem, and Change Management processes based on ITIL best practices. * Contribute to the evolution of the...
IR35 Status:
Unknown Status

CV-Library Farnborough, Hampshire Contractor
CL
Apr 08, 2026  
Software Engineering Manager
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,...
IR35 Status:
Unknown Status

CV-Library Farnborough, UK Contractor
CL
Feb 15, 2026  
Senior Test Data & Analytics Specialist
Senior Test Data & Analytics Specialist Gaydon, Warwickshire (Hybrid) 12 month contract  Rate: Negotiable (DOE)  We’re supporting a major UK-based engineering organisation with the search for a Senior Data Analytics Specialist to support software and systems testing programmes across multiple engineering domains. This role sits at the intersection of engineering, testing and development, with a strong focus on ensuring the integrity, consistency and usability of testing data created within JIRA and visualised through Tableau. You’ll play a key role in transforming complex datasets into meaningful insight, supporting senior stakeholders with clear reporting and enabling data-driven decision making. Key Responsibilities Analyse software and systems testing data across multiple engineering domains Ensure data integrity, consistency and traceability within JIRA tooling Identify trends, patterns, anomalies and risks within testing datasets Prepare high-quality datasets for...
IR35 Status:
Unknown Status

CV-Library Warwickshire, UK Contractor
CL
May 23, 2026  
Software Engineer
Software Engineer (C# .NET) Location: Luton (4 days on-site, 1 day remote) Contract: 12 months Security Clearance: Full UK SC required Rate: £57.72 p/h PAYE (£66.11p/h inc. holiday rate) OR £78.70 p/h Umbrella Inside IR35 About the Role Our client is looking for C# .net developers who can work with the minimum of supervision to deliver current and future programs. Working within the Integrate Mission Solutions sector of the Electronic Warfare Line of Business this role provides an opportunity to work on the latest defence technology within a mature development environment. What You’ll Do · Develop robust applications using C# .NET within a Windows environment. · Take ownership of complex tasks across the full software lifecycle—from requirements to integration, testing and delivery. · Apply object-oriented design principles and verification/validation techniques. · Collaborate with a skilled team while maintaining independence in your work. What...
IR35 Status:
Inside IR35

CV-Library Luton, UK Contractor
CL
May 23, 2026  
FPGA Design Engineer
For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (Image\Radio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role involves working at all phases of the FPGA design and verification cycle hence, the candidate would be responsible some of the following key activities: • Generating complex FPGA architectures and design implementations (VHDL, Simulink etc), targeting Xilinx, Intel, Microsemi devices. • Verifying complex FPGA implementations using VHDL and System Verilog\UVM test-bench methodologies. • Using FPGA design toolsets and Mentor verification tools (QuestaSim & ModelSim). • Generating low-level software (C) to facilitate FPGA test and integration with the wider embedded system. • Configuring and...
IR35 Status:
Unknown Status

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
FPGA Design Engineer
World Class Defence Organisation is currently looking to recruit 3x FPGA Design Engineer Subcontractors on an initial 12 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bristol depending on your preference Hybrid / Remote working: Hybrid working of 3 days per week onsite Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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