CGI?s Space, Defence and Intelligence business unit focuses on delivering contemporary and innovative technical solutions to government agencies tackling some of the most complex challenges. We design, build, and operate bespoke, mission-critical systems that help keep the UK safe and secure. We are looking for experienced Python Developers to join our cross-functional teams. Working closely with our clients, you will help design, build, and deliver secure, scalable solutions in a highly rewarding and impactful environment. CGI places strong emphasis on learning and development, ensuring your skills evolve alongside the latest technologies. Our culture promotes innovation, collaboration, and ownership?ideal for motivated self-starters. Due to the secure nature of the work, these roles require UK Security Clearance and sole UK nationality. Candidates should either already hold DV clearance or be willing and eligible to obtain it. Candidate profile: As a Python Developer, you will contribute to the delivery of cloud-based, data-intensive systems. Your responsibilities will include: Designing, developing, and maintaining robust Python applications Building scalable APIs and backend services Working with large datasets and data processing pipelines Contributing to system architecture and technical design decisions Automating workflows and improving deployment pipelines Maintaining and enhancing cloud-based environments (primarily AWS) Supporting live systems and implementing enhancements when required Collaborating with cross-functional teams in agile environments We?re looking for individuals with a strong problem-solving mindset who can adapt quickly to evolving client needs. Required qualifications to be successful in this role We are particularly interested in candidates with strong Python development experience, alongside exposure to some of the following: Core Skills: Python (primary language) Experience with frameworks such as FastAPI, Flask, or Django Strong understanding of RESTful APIs and microservices architecture Cloud & DevOps: AWS (e.g. Lambda, EC2, S3, RDS) CI/CD tools such as Jenkins or GitLab CI/CD Infrastructure as Code (e.g. Terraform) Data & Integration: Working with large datasets and data pipelines Tools such as Apache NiFi or similar integration frameworks Scripting & Automation: Bash, Ansible Monitoring & Logging: ELK Stack (Elasticsearch, Logstash, Kibana), Grafana Testing & Quality: Automated testing frameworks (e.g. PyTest, Cucumber) Code quality tools such as SonarQube Experience across multiple areas is beneficial, but not essential. A willingness to learn and contribute across the stack is key. Candidates must hold, or be eligible to obtain, Developed Vetting (DV) clearance.
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- £48k - £62k per annumEstimatedPython Developer (DV Security Clearance) Position Description CGI’s Space, Defence and Intelligence business unit focuses on delivering contemporary and innovative technical solutions to government agencies tackling some of the most complex challenges. We design, build...Security clearance
- £63k - £80k per annumEstimatedPlatform Engineer (DV Security Clearance) Position Description At CGI, we build and operate mission-critical systems that help protect the... ...that deliver real-world impact, while being supported in developing your skills and advancing your career. CGI was recognised...Security clearance
- £53k - £68k per annumEstimatedInfrastructure & Automation Engineer (DV Security Clearance) Position Description At CGI, we help protect the UK’s most critical national... ...professionals to take ownership, bring forward new ideas and develop their careers while making a tangible impact on some of the UK...Security clearance
- £62k - £79k per annumEstimatedSoftware Engineer (Backend / Platform) (DV Security Clearance) Position Description At CGI, we deliver cutting-edge software solutions that... ...make a meaningful impact, influence technical outcomes, and develop your expertise alongside highly skilled professionals tackling...Security clearance
- £49k - £63k per annumEstimatedSite Reliability Engineer (DV Security Clearance) Position Description At CGI, we deliver mission-critical technology solutions that help... ..., and drive continuous improvement while being supported in developing your skills and career. Your work will directly contribute...Security clearanceLong-term contract
- £52k - £69k per annumEstimatedInfrastructure Engineers (DV Security Clearance) Position Description At CGI, we deliver the secure, mission-critical systems that power the... ...• GitOps tooling such as Argo CD • Scripting (Python, Shell) • Container orchestration tools (e.g., Docker Swarm,...Security clearanceHybrid working
- £53k - £68k per annumEstimatedSoftware Engineers (DV Security Clearance) Position Description Elevate your potential with CGI, a global technology service provider and premier... ..., Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build and operate bespoke,...Security clearance
- £47k - £59k per annumEstimatedDevOps Engineer (DV Security Clearance) Position Description At CGI, we deliver mission-critical systems that protect and secure the UK,... ...critical national systems. You will collaborate closely with developers and testers to troubleshoot, optimise, and automate delivery...Security clearance
- £76k - £99k per annumEstimatedSite Reliability Engineers (DV Security Clearance) Position Description CGI was recognised in the Sunday Times Best Places to Work List 20... ...technology stack, including: Languages & Scripting: Java, Python, Go, JavaScript (TypeScript), Bash Frontend: Vue CI/CD...Security clearanceHybrid working
- £44k - £56k per annumEstimatedScrum Master (DV Security Clearance) Position Description At CGI, we deliver mission-critical solutions that shape the future of secure digital... ...To succeed, you will bring proven experience leading Agile IT development projects within secure or complex environments, combined...Security clearance
- £42k - £54k per annumEstimatedOperations Support Manager - Secure Cloud Services (DV Security Clearance) Position Description At CGI, you will play a key role in ensuring the stability... ...Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke,...Security clearance5 days/week
- £43k - £56k per annumEstimatedIT Service Manager - Secure Cloud Services (DV Security Clearance) Position Description At CGI, you will play a key role in shaping and delivering high-quality IT services that support mission-critical systems across the Space, Defence and Intelligence sector. As an...Security clearance5 days/week
- £50k - £65k per annumEstimatedService Delivery Manager - Secure Cloud Services (DV Security Clearance) Position Description At CGI, you will lead the delivery of secure, high-impact... ...Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke,...Security clearance5 days/week
- £62k - £80k per annumEstimatedProject Manager - Secure Cloud Services (DV Security Clearance) Position Description At CGI, you will lead the successful delivery of complex, mission-... ...Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke,...Security clearanceHybrid working5 days/week
- £65k - £86k per annumEstimatedData Architect (DV Security Clearance) Position Description At CGI, we deliver secure, mission-critical systems that help safeguard the UK... ...& Optimise: Anticipate risks, costs, and opportunities, and develop strategies to address them. • Assure & Scale: Ensure solutions...Security clearanceLong-term contractHybrid workingImmediate start
- £55k - £72k per annumEstimatedInfrastructure Project Manager - Secure Infrastructure (DV Clearance) Position Description At CGI, our Space, Defence and Intelligence business unit... ...should have proven experience delivering infrastructure or IT transformation projects, with a strong understanding of enterprise...Security clearance5 days/week
- £48k - £62k per annumEstimated...critical systems that protect and secure the UK, combining deep... ...will need to hold UK Security Clearance or be eligible to go through this... ...will collaborate closely with developers and testers to troubleshoot, optimise... ..., Go, or scripting languages (Python, Bash) Proven ability to...Security clearanceFull-time
- £55k - £71k per annumEstimated...critical systems are custom-built to ensure security, reliability, and innovation, helping our... ...only available if you hold a UK Security Clearance and are a sole UK National due to the... ...opportunity to both hone existing expertise, and develop new skills and experience. Key Tasks:...Security clearanceFull-time
£54.2k - £64.8k per annum
...supportive, multidisciplinary team developing AI/ML systems to solve critical National Security challenges. As a Machine Learning... ...eligible for UK Developed Vetting (DV), details of which can be found on... ...in programming languages such as Python, producing clean, reproducible, well...Security clearanceLong-term contractOn-site- £57k - £74k per annumEstimated...critical systems are custom-built to ensure security, reliability, and innovation, helping our... ...who hold or are eligible for High-Level Clearance (HLC). While there is some flexibility... ...opportunity to both hone existing expertise, and develop new skills and experience. Key Tasks:...Security clearanceFull-timeHybrid workingRemote
- £43k - £56k per annumEstimatedAt CGI, we design, build, and operate secure, mission-critical systems that help protect the UK while enabling clients to innovate with... ...secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a hybrid...Security clearanceFull-timeHybrid working
£75k per annum
...Infrastructure Engineer – DV Cleared Salary: Up to £75,000 Location... ...and delivering critical IT infrastructure? I’m currently supporting... .... This role operates in a high‑security environment and candidates must already hold active DV (Developed Vetting) clearance . It’s a...Permanent- £72k - £94k per annumEstimatedMLOps Engineer (SC Clearance) Position Description At CGI, you will... ...support critical national security outcomes. Working within our Space... ...unit in CGI is a true IT Systems Integrator. We work, build... ...environments. You will take ownership of developing the infrastructure and...Security clearance5 days/week
- £58k - £79k per annumEstimatedProject Managers (DV Security Clearance) Position Description CGI’s Space, Defence, and Intelligence business unit is dedicated to delivering... ...will be opportunity to both hone existing expertise, and develop new skills and experience. Key Tasks: • Client/Supplier...Security clearance
- £52k - £70k per annumEstimatedBusiness Analyst (DV Security Clearance) Position Description CGI’s Space, Defence, and Intelligence business unit is dedicated to delivering... ...will be opportunity to both hone existing expertise, and develop new skills and experience. Key Tasks: • Product Owner support...Security clearanceHybrid workingRemote
- £71k - £91k per annumEstimatedAI Engineer / Developer Position Description At CGI, you will help... ...unit in CGI is a true IT Systems Integrator. We work, build... ...clients keep us all safe and secure. We bring innovation to our clients... ...will need to hold UK Security Clearance or be eligible to go through...Security clearance5 days/week
- £25k - £34k per annumEstimatedTechnical Author Infrastructure (DV Security Clearance) Position Description At CGI, we empower our members to shape the future of secure... ...In this role, you will be responsible for developing, maintaining, and improving high-quality technical documentation...Security clearance
- £59k - £76k per annumEstimatedOpenshift Infrastructure Engineer - Secure Platforms Engineering / Kubernetes - (SC Clearance) Position Description At... ...Proficiency in scripting (e.g., Bash, Python) • Experience supporting CI/CD... ...Your work creates value. You’ll develop innovative solutions and build...Security clearance5 days/week
- £35k - £48k per annumEstimatedAutomation Tester (DV Security Clearance) Position Description CGI was recognised in the Sunday Times Best Places to Work List 2025 and... ...and highly rewarding environment. We are heavily committed to developing our members and provide excellent learning and development...Security clearanceOn-siteWork from home
- £39k - £50k per annumEstimated...high-impact projects that enable secure, scalable platforms, while... ...hold Higher level UK Security Clearance, Required on site in Gloucester... ...using Infrastructure as Code > Develop and reuse playbooks, roles and... ...skills with Bash and Python, including Pytest > Experience...Security clearanceFull-time5 days/week
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