33 software engineer jobs found in Bristol

Software Engineer | Bazel 📍 Bristol 🏠 Hybrid work model -3 days in the office, 2 days wfh 💶 Up to £600/day - Outside IR35 📄 6 months contract with possible extensions 5V Tech are working with a fast-growing deep tech company building a completely new class of AI accelerator hardware and software from first principles. They’re now looking for an engineer to take ownership of Bazel at scale and build the tooling infrastructure that powers the entire engineering organisation. This is a genuinely high-impact role in a greenfield environment, where you’ll help shape the build systems, developer workflows, and CI infrastructure from the ground up. What you’ll be working on: • Designing and owning Bazel rules and extensions • Scaling a large monorepo across Python, C++, Rust, SystemVerilog, and ML workloads • Building reproducible, multi-language build pipelines • Optimising CI performance across large compute clusters • Improving the developer...

Software Engineer (PHP, Playwright, k6) - Mobile RASP & API Security Gateway Pay Rate: £500- £550 (Outside IR35) Duration: 6 months ' Working arrangement: Once a month - Bristol We are currently working with an established financial services organisation operating in the investment and wealth management sector. The organisation is strengthening its mobile and API security capabilities and is seeking an experienced Contract Engineer to help deliver and operationalise a Mobile RASP and API Security Gateway solution. This role is delivery-focused and hands-on, working across backend engineering, testing, security, and operational readiness in a regulated environment. Responsibilities Design, develop, and maintain secure PHP-based backend services and APIs Build and maintain automated end-to-end and functional test suites using Playwright or similar tools Execute and analyse performance and load tests using k6) to identify reliability,...

Software Engineer (PHP, Playwright, k6) - Mobile RASP & API Security Gateway Pay Rate: £500-£550 (Outside IR35) Duration: 6 months' Working arrangement: Once a month - Bristol We are currently working with an established financial services organisation operating in the investment and wealth management sector. The organisation is strengthening its mobile and API security capabilities and is seeking an click apply for full job details

Software Engineer (PHP, Playwright, k6) - Mobile RASP & API Security Gateway Pay Rate: £500-£550 (Outside IR35) Duration: 6 months' Working arrangement: Once a month - Bristol We are currently working with an established financial services organisation operating in the investment and wealth management sector. The organisation is strengthening its mobile and API security capabilities and is seeking an click apply for full job details

Software Engineer - Simulation Location: Yeovil, 2 days a week on site Duration: 12 Months + Rate: Up to £60 p/h Ltd Outside IR35 SC Clearance required. Support development of synthetic environments for both crewed and un-crewed rotary wing platforms within the LH Engineering function click apply for full job details

Project Software Engineer SCADA 12 month contract generous day rate Outside IR35 Towcester, Hybrid MC Technical Recruitment is currently looking to recruit a Project Software Engineer to join a UK Renewable Energy Business working with wind & solar technologies click apply for full job details

A company that specialise in electro-mechanical systems for electric vehicles is seeking to recruit an Embedded Software Engineer to work on a contract that is initially scheduled for 6 months (outside IR35) from their site in Surrey (4 days per week onsite, 1 day from home). The Role This position will involve Embedded C related software Engineering for low level driver development click apply for full job details

I’m currently working on multiple Outside IR35 Java opportunities supporting a major public sector biometric programme. Roles: • Java Developer • Lead Java Developer Location: Hybrid – 2 days/week in Solihull with occasional Croydon travel. Rate : £450/day Outside IR35 Key skills: Java 17+, Spring Boot, Microservices, AWS, PostgreSQL, Docker, ActiveMQ, REST/SOAP, Jenkins, TDD, Agile. Requirements: • Public sector experience • SC Cleared or SC Eligible • Strong Spring-based Java background • Available for face-to-face interview next week Nice to have: NPPV3, AWS/Azure certs, Spring Integration/Batch, Angular/NodeJS.

DevOps Engineer; Security Clearance, Ci/CD, Terraform, Kubernetes, vulnerability, Andover or Bristol (primary): 2 days per week mandatory at the client site Security clearance is a must have, rate £450 per day outside IR35 Essential: Proven experience administering CI/CD platforms such as GitLab, Jenkins, GitHub Actions, or Nexus. Strong understanding of DevOps and infrastructure automation principles (eg Ansible, Terraform, Scripting). Experience managing secure, containerised environments (Kubernetes, Red Hat OpenShift). Working knowledge of monitoring, logging, and vulnerability scanning tools (eg Prometheus, Grafana, SonarQube, ELK Stack). Experience establishing and maturing technical environments or development platforms from inception. Strong system administration background with knowledge of networking, access management, and system security. Demonstrated ability to manage multiple priorities and lead small-scale innovation or capability development...

Senior C++ Engineer Based out of Cheltenham 4-5 Days per week £600 to £650 Outside IR35 Immediate Start (Ideally within the next two weeks) I am working on behalf of a National Security client based out of Cheltenham who are looking for a Senior C++ Engineers to join them on a Contract basis for 6 months initially. We're looking for a C++ Engineer who has led end-end projects and enjoys solving complex technical problems in areas like software defined radio. The role would suit someone open to some pythons for tooling, automation, or testing alongside core C++ development. If you are currently working in Security, Defence or Financial Services this would be a big bonus for the client. Again, this role will be based out of Cheltenham 4-5 Days per week and you must be SC Cleared to be considered. If you're interested, please do respond with your updated CV as I will be calling through applicants in order of receipt - m.simmonds @ioassociates.co.uk (no spaces) Senior...

Senior C++ Engineer Based out of Cheltenham 4-5 Days per week £600 to £650 Outside IR35 Immediate Start (Ideally within the next two weeks) I am working on behalf of a National Security client based out of Cheltenham who are looking for a Senior C++ Engineers to join them on a Contract basis for 6 months initially. We're looking for a C++ Engineer who has led end-end projects and enjoys solving complex technical problems in areas like software defined radio. The role would suit someone open to some pythons for tooling, automation, or testing alongside core C++ development. If you are currently working in Security, Defence or Financial Services this would be a big bonus for the client. Again, this role will be based out of Cheltenham 4-5 Days per week and you must be SC Cleared to be considered. If you're interested, please do respond with your updated CV as I will be calling through applicants in order of receipt Senior C++ Engineer Based out of Cheltenham 4-5 Days...

Senior Electronic Systems Engineer Outside IR35 | Up to £750/day | 6 months + extensions (2–3 year programme) 1‑stage interview | Long-term project for an Senior Electronic Systems Engineer to take end‑to‑end ownership of airborne electronic hardware for Hydrogen Fuel Cell Management Systems on a landmark clean‑aviation programme. This is a hands‑on, system‑level role where you’ll define architecture, drive integration, and lead verification and qualification of high‑reliability airborne hardware — shaping technology that will power the future of zero‑emission flight. You’ll work with a world‑class engineering team on a long‑term programme, while retaining the flexibility and autonomy of an outside‑IR35 contract . What you’ll do: Own the architecture, integration, verification, and qualification of airborne electronic hardware Define system and derived requirements to meet safety and regulatory objectives Architect and integrate...

AWS DevOps Engineer | Outside IR35 The Role We are looking for an experienced DevOps Engineer to join a fast-moving digital delivery environment on a contract basis. This position is centred around building and shaping cloud infrastructure for a variety of modern software projects, working closely with engineering and delivery teams throughout the full life cycle. You'll be expected to contribute to technical discussions, collaborate with stakeholders across delivery functions and support production-grade systems in a client-driven environment. Key Responsibilities . Designing scalable cloud infrastructure solutions within AWS . Building and maintaining infrastructure using Terraform and IaC principles . Developing reliable CI/CD pipelines and deployment workflows . Supporting automation and release processes across multiple environments . Working with GitHub Actions and other delivery tooling . Contributing to infrastructure strategy and technical decision-making ....

MERITUS are recruiting for a Technical Architect to join our client supporting major Central Government programmes, delivering secure, high-quality architecture solutions across complex IT environments. TECHNICAL ARCHITECT - OUTSIDE IR35 - £800 PER DAY - 12 MONTHS - ANDOVER (2 DAYS ONSITE PER WEEK) - TWO STAGE INTERVIEW PROCESS - SECTOR: CENTRAL GOVERNMENT / DEFENCE (SC CLEARANCE REQUIRED) As a Technical Architect, you will play a key role in designing and delivering best-in-class solutions that meet both business and technical requirements. You will ensure architectural integrity, alignment to strategy, and adherence to security and regulatory standards across the full project lifecycle. You will collaborate with multidisciplinary teams, providing technical leadership and governance while driving innovation and continuous improvement across large-scale, complex systems. Key Responsibilities: Lead the design and delivery of large-scale or...

Location: Worcester (Site based) Duration: 6 month initial contract Rate: £82ph LTD (Outside IR35) Role details: Our client, a leader in the Defence & Security sector, is currently seeking a DV Cleared Software / DevOps Engineer for an initial 6-month contract, based on-site in Worcester. Key Responsibilities: Collaborating with coworkers to conceptualise, develop, and release software. Conducting quality assurance to ensure that the software meets prescribed guidelines. Rolling out fixes and upgrades to software, as needed. Securing software to prevent security breaches and other vulnerabilities. Collecting and reviewing customer feedback to enhance user experience. Suggesting alterations to workflow in order to improve efficiency and success. Pitching ideas for projects based on gaps in the market and technological advancements. Job Requirements: Active MOD DV Clearance. Strong proficiency with CI/CD tools such as Gitlab CI, Terraform,...

Job Title: HPC Linux Systems Engineer - Enterprise Linux & Cluster Infrastructure Location: Hybrid to Remote - Swansea (mostly remote & expenses for all site travel) Day Rate: £465 per day - payable to Limited Company/Outside IR35 Duration: 4 months initially Pay Frequency: Weekly Start Date: ASAP Overview We are seeking an experienced HPC Linux Systems Engineer to deploy, configure, optimise and support high-performance computing (HPC) environments. This includes large-scale Linux clusters, GPU-accelerated systems, and associated storage, networking, and authentication infrastructure. Although this role is hybrid, it's expected to be largely remote/WFH. Responsibilities Deploy, configure, optimise and support enterprise Linux across HPC clusters Automate provisioning and manage configuration at scale (PXE, Kickstart, Ansible/Puppet) Install, configure, and optimise HPC schedulers (eg Slurm) and MPI environments Deploy and manage GPU...

Job Title: HPC Linux Systems Engineer - Enterprise Linux & Cluster Infrastructure Location: Hybrid to Remote - Swansea (mostly remote & expenses for all site travel) Day Rate: £465 per day - payable to Limited Company/Outside IR35 Duration: 4 months initially Pay Frequency: Weekly Start Date: ASAP Overview We are seeking an experienced HPC Linux Systems Engineer to deploy, configure, optimise and support high-performance computing (HPC) environments. This includes large-scale Linux clusters, GPU-accelerated systems, and associated storage, networking, and authentication infrastructure. Although this role is hybrid, it's expected to be largely remote/WFH. Responsibilities Deploy, configure, optimise and support enterprise Linux across HPC clusters Automate provisioning and manage configuration at scale (PXE, Kickstart, Ansible/Puppet) Install, configure, and optimise HPC schedulers (eg Slurm) and MPI environments Deploy and manage GPU...

Location: Maidenhead (fully onsite) Duration: 6 month contract Outside IR35 Role details: Our client is looking for a Full-Lifecycle Systems Engineer to support their teams on advanced cryptographic and key‑management solutions that enable the secure exchange of critical information for customers operating at both tactical and strategic levels. You will work closely with multi‑disciplinary teams, often acting as the single point of Systems Engineering accountability on a project, applying a practical approach aligned to project size, risk, and maturity. The role requires confidence in making independent technical judgements, shaping the approach rather than simply following established frameworks. The ideal candidate will have a background in smaller organisations or SME-style project teams. Key Responsibilities: Own and deliver full lifecycle Systems Engineering activities on smaller to medium projects, from bid support through development, test,...

Location: Maidenhead (fully onsite) Duration: 6 month contract Outside IR35 Role details: Our client is looking for a Full-Lifecycle Systems Engineer to support their teams on advanced cryptographic and key‑management solutions that enable the secure exchange of critical information for customers operating at both tactical and strategic levels. You will work closely with multi‑disciplinary teams, often acting as the single point of Systems Engineering accountability on a project, applying a practical approach aligned to project size, risk, and maturity. The role requires confidence in making independent technical judgements, shaping the approach rather than simply following established frameworks. The ideal candidate will have a background in smaller organisations or SME-style project teams. Key Responsibilities: Own and deliver full lifecycle Systems Engineering activities on smaller to medium projects, from bid support through development, test,...

Job Title: EPOS & SCO Platform Engineer Contract Length: 6 months Hybrid: 2 Days On Site IR35: Outside IR35 Project Support, maintain, and enhance EPOS and self-checkout platforms across a large retail estate. The role focuses on delivering secure, resilient, and scalable checkout infrastructure while improving automation, monitoring, and operational stability across tills, kiosks, peripherals, and Back End systems. Tech Stack EPOS & SCO Platforms Windows 10 Windows 11 Linux (Ubuntu/Debian) VBScript PowerShell Till Hardware & Peripherals Monitoring & DR Tools Key Responsibilities Design, build, and maintain EPOS and SCO infrastructure (tills, self-checkouts, peripherals, and controllers) across Windows 10, Windows 11, and Linux environments Own the full life cycle from initial design and requirement capture through to deployment, configuration, and ongoing 3rd line support Create and manage non-production environments to...