Location
London

Hours
Full Time

Salary
Competitive salary with excellent benefits including pension, private healthcare, and a share scheme (3.5% + 3.5% matching)

About the Role
At CGI, you'll help deliver secure, high-impact solutions that enable government agencies to tackle some of their most complex and mission-critical challenges. As a Python Software Engineer, you will work with modern technologies to build secure, scalable, and reliable systems that drive real-world outcomes. You will collaborate with talented colleagues, contribute innovative ideas, and take ownership of technical solutions in an environment that values continuous learning, creativity, and professional growth.

This role involves developing secure, scalable Python applications supporting mission-critical programmes within CGI's Space, Defence and Intelligence business. You will design, build, test, and enhance software solutions using modern development practices, while mentoring colleagues and contributing to continuous improvement of engineering standards. Due to the secure nature of the programme, UK Security Clearance is required or eligibility to obtain it. This role is based on a secure site.

Key responsibilities include developing and delivering secure Python software, designing and documenting technical solutions, building and maintaining data processing pipelines, testing through unit and integration tests, collaborating within Agile teams, optimising development processes with DevOps and CI/CD, innovating to solve complex challenges, and supporting cloud-based and virtualised environments.

Experience
- At least five years' experience developing software using Python, including object-oriented and functional programming
- Strong experience working within cross-functional software development teams
- Proven ability to mentor and support junior engineers
- Experience with unit, integration, and end-to-end testing with a quality-first mindset
- Experience producing technical designs and documentation
- Experience developing or maintaining data processing pipelines
- Working knowledge of DevOps practices and cloud or virtualisation platforms
- Strong interpersonal and stakeholder communication skills

About you
Passionate about developing high-quality software and solving challenging technical problems. Comfortable working within collaborative delivery teams with strong communication skills. Enthusiastic about continuously learning new technologies and driving innovation.

Qualifications
Essential:
- Proven software engineering skills with Python
- Experience with modern software engineering, testing, and cloud-based environments

Desirable:
- Experience with AWS
- Experience using Elasticsearch and Kibana
- Containerisation experience with Docker, Kubernetes, and/or OpenShift
- Knowledge of security technologies and protocols, including PKI and TLS