Freelancer UK
  • All Jobs
  • Outside IR35
  • Agencies
  • Post a Job
  • Pricing
  • Guides
  • Sign in
  • Sign up
  • All Jobs
  • Outside IR35
  • Agencies
  • Post a Job
  • Pricing
  • Guides

Email me jobs like this

Email me jobs like this
Refine Search
Search within
50 miles
10 miles 20 miles 50 miles 100 miles 200 miles
Refine by IR35 Status
Unknown Status 9 Inside IR35 5 Outside IR35 1
Refine by Categories
Engineering 38 Construction 14 Admin-Clerical 2 Management 2 Other 2 Automotive 1
Media-Journalism 1 Pharmaceutical 1 Science 1
More
Refine by Job Type
Contractor 15
Information Technology Reading senior systems engineer

15 senior systems engineer jobs found in Reading

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
Jun 14, 2026  
AI Engineer - LLM & Agentic Systems
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...
IR35 Status:
Outside IR35

CV-Library SW1V, Victoria, Greater London Contractor
CL
Jun 20, 2026  
Senior AI Enabled Software/DevOps Engineer
What You'll Be Doing - Design, build, and operate AI‑enabled software and platform solutions - Develop and maintain API‑driven services and integrations that allow systems to work effectively with AI capabilities - Contribute to the evolution of existing applications towards modern, service‑based and cloud‑native architectures - Implement and operate integration mechanisms between software systems and AI platforms, including emerging patterns where appropriate - Apply AI tools to support engineering productivity, while retaining full accountability for quality, safety, and correctness - Review, validate, and guide AI‑generated code or output to ensure it meets engineering and operational standards - Build, deploy, and operate services using TypeScript and Python, supported by modern DevOps practices - Package and operate workloads using Kubernetes tooling (e.g. Helm) and infrastructure‑as‑code (e.g. Terraform) - Work closely with engineers, platform teams, and AI...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 20, 2026  
Lead AI Enabled Software/DevOps Engineer
What You'll Be Doing - Provide technical leadership across AI-enabled software and DevOps engineering teams - Set architectural direction for API-first design, system integration, and platform enablement for AI - Lead the evolution of legacy or existing applications towards modern, service-based and API-driven architectures - Define and guide integration patterns between applications, platforms, and AI services - Make informed decisions on when and how emerging integration approaches (e.g. protocols such as MCP) should be applied as part of broader system design - Work closely with architects, product teams, data scientists, and platform engineers to deliver end-to-end solutions - Ensure solutions meet appropriate standards for security, resilience, performance, and operability - Anticipate and manage architectural and operational risks associated with AI-enabled systems - Champion strong engineering practices across software development, DevOps, and platform engineering...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 18, 2026  
AI Application/Big Data Engineer
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:...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 18, 2026  
Contract Ruby Tech Lead - Start up
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...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 16, 2026  
Senior Backend Engineer with Content delivery experience
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,...
IR35 Status:
Unknown Status

CV-Library London, UK 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
Jun 20, 2026  
Technical Architect
MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. TECHNICAL ARCHITECT - 12 MONTH CONTRACT - UP TO £800 PER DAY - INSIDE IR35 - READING (2 DAYS ON-SITE) - SECTOR: DEFENCE / GOVERNMENT As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. Lead technical design of large-scale, complex systems Define and govern solution architecture and technical designs Ensure alignment with security, performance, scalability, and compliance standards Work closely with engineering, delivery, and business stakeholders Provide technical governance, assurance, and risk evaluation Design...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 20, 2026  
Software Engineer
Software Engineer (Full Stack) Rate: £675 per day (Inside IR35) Contract Length: 6 Months (with potential extension) Location: London (Hybrid - typically 2 days per week onsite) Clearance: Active or transferable SC Clearance preferred. Overview We are seeking an experienced Software Engineer to join a growing multidisciplinary team delivering innovative AI-enabled products within a government-focused environment. This is a hands-on engineering role suited to candidates with strong full-stack development experience who are comfortable working across the entire software lifecycle, from product development through to infrastructure and deployment. The successful candidate will work within a collaborative team of engineers, AI specialists, product professionals and user-centred design experts, helping to build and scale a modern platform that leverages large language models (LLMs) and advanced AI capabilities. Key Responsibilities * Build, enhance and maintain a full-stack...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 19, 2026  
Embedded Software Engineer
Embedded Software Engineer Location: 3 days/week in London Contract Length: 12 Months Day Rate: £50-65 per hour Security Clearance: SC Eligible or Active SC Preferred Start Date: ASAP Overview I am seeking an experienced Embedded Software Engineer to support the development of advanced defence radar and surveillance systems for a high-profile programme within the defence sector. This contract role will focus on real-time embedded software development for radar processing platforms, sensor interfaces, and mission-critical electronic systems. The successful engineer will work closely with systems, FPGA, DSP, and electronics teams to deliver software for complex embedded hardware environments. Key Responsibilities Design and develop embedded software in C/C++ for radar and sensor systems Develop low-level drivers and hardware abstraction layers for custom embedded platforms Work on real-time software running on ARM-based and DSP-enabled systems Interface with FPGA teams...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 19, 2026  
AWS DevOps Engineer
AWS DevOps Engineer +6 months + +Inside IR35 +£575 - £610 a day +SC cleared role - sole British nationals only due to nature of the project +Fully remote working CBSbutler are supporting a large organisation delivering a critical UK public sector programme and are looking for an experienced DevOps Engineer / DevOps SME to strengthen platform delivery, automation and secure release capability. What you'll be doing Designing and improving CI/CD pipelines to enable reliable, repeatable deployments Implementing and maintaining Infrastructure as Code (IaC) for automated environment provisioning Supporting containerised platforms and orchestration to improve scalability and resilience Embedding security and compliance controls into engineering workflows (DevSecOps) Driving observability improvements across monitoring, logging and alerting Advising engineering teams on DevOps best practice and helping remove delivery bottlenecks Essential experience Typically 5-10+ years in...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 14, 2026  
Cloud Platform Engineer - Energy / Oil and Gas, Azure, AWS
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...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 31, 2026  
Data Engineering Lead
Data Engineering Lead Certain Advantage are hiring for a Data Engineering Lead based in London. This role is on an initial contract till the end of the year and is required to be onsite 3 days a week. The successful candidate will lead the data acquisition function by defining ingestion strategy and building Azure-based data pipelines. You will translate end-user requirements into scalable engineering solutions, act as the domain’s primary Data Manager for data governance, lineage, quality, and master data management, and lead a team of data engineers in delivering reliable, compliant, and high-value data solutions to Trading, Risk, Finance, and Operations. Your responsibilities: Own ingestion strategy and define scalable batch/streaming data patterns Design and deliver Azure-based data pipelines and platform solutions Standardize connectors, schemas, controls, CI/CD, IaC, and automated testing Lead onboarding of enterprise and market data sources with SLAs and...
IR35 Status:
Unknown Status

CV-Library Lambeth, London, 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
  • Follow us on:
  • Facebook
  • Twitter
  • Instagram
  • LinkedIn
  • Home
  • Contact
  • About Us
  • Terms & Conditions
  • Employer
  • Post a Job
  • Search Resumes
  • Sign in
  • Job Seeker
  • Find Jobs
  • Outside IR35
  • Create Resume
  • Sign in
© 2008-2026 Powered by SmartJobBoard Job Board Software