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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - **Company:** Leidos, Inc. - **Location:** Bristol, UK (Remote available) - **Experience:** Expert - **Salary:** £61,500.0 - £78,800.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Apple Mac Systems, Application Frameworks, Computing Platforms, System Configuration, Continuous Integration, Data Security, Software Debugging, Linux, Distributed Systems, Django Web Framework, Elasticsearch, Design of User Interfaces, Python (Programming Language), Enterprise Messaging Systems, MongoDB, RabbitMQ, Redis, Ansible, Secure Coding, Software Engineering, Software Systems, Systems Integration, Virtualization Technology, Web Applications, Web Application Frameworks, Data Processing, Flask (Web Framework), Software Security, Ios Frameworks, Electron (Programming Language), Gitlab, Git, Fastapi, Vue.js, Containerization, Gitlab-ci, Git Flow, Infrastructure Automation Frameworks, Information Technology, Terraform, Programming Languages - **Published:** October 6, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5913584931 ## About the Role * Extensive experience in software development for applications or tools. * Strong proficiency in Python and the ability to work across modern application frameworks and automation tooling. * Experience designing and delivering production quality applications. * Strong understanding of UI frameworks, APIs, data handling, system integration, and secure application design. * Confident working in Linux and/or MacOS development environments. * Ability to work flexibly across multiple programming languages and frameworks. * Proven ability to solve complex technical problems with creativity and rigour. * Ability to influence technical decisions and collaborate across teams. * Experience with testing frameworks, debugging tools, Git workflows, and CI/CD pipelines, ideally using GitLab. * Working knowledge of good industry practice for secure coding, application security, and security-conscious development lifecycles. * Experience with infrastructure as code, particularly Ansible and Terraform/Terragrunt. * Experience working with MongoDB, Elasticsearch, Redis, RabbitMQ, or similar data and messaging technologies. Desirable: * Experience in secure or defence related environments. * Knowledge of cryptography, secure data handling, or secure system design. * Experience with web or desktop frameworks, particularly Vue and Electron, alongside Python web frameworks such as Flask, FastAPI, or Django. * Familiarity with containerisation, virtualisation, secure deployment practices, and operational support in controlled environments. * Practical experience installing, configuring, or troubleshooting hardware where software delivery depends on physical infrastructure. * Experience with distributed systems or message-based architectures. Education and Experience * Degree in Computer Science, Software Engineering, or related field preferred. * Professional membership (BCS, IET) is a plus. ## Description We are looking for a senior application developer who can take ownership of technically challenging software delivery in a secure, mission-focused environment. This role suits an engineer who is comfortable making design decisions, solving complex problems, and working directly with users to turn operational requirements into reliable software solutions You will work primarily with Python, Vue, Electron, GitLab CI/CD, Ansible, Terraform/Terragrunt, and supporting platform technologies including MongoDB, Elasticsearch, Redis and RabbitMQ. Alongside application development, the role includes secure coding, infrastructure automation, deployment support, and occasional installation or configuration of hardware in controlled environments. What You'll Do * Lead the design and development of desktop, web, or service-based applications. * Architect and implement high quality Python code, application frameworks, APIs, and supporting automation. * Develop and maintain modern user interfaces and desktop/web applications using Vue and Electron. * Develop solutions that integrate data processing, UI/UX, automation, and system level components. * Create, maintain, and improve infrastructure as code using Ansible and Terraform/Terragrunt. * Lead testing, debugging, optimisation, and performance improvements. * Shape requirements, propose technical approaches, and influence project direction. * Support integration and deployment of software into secure operational environments. * Build and support CI/CD pipelines in GitLab to automate testing, packaging, deployment, and release activities. * Work with supporting platform components, including MongoDB, Elasticsearch, Redis, RabbitMQ and related integration services. * Occasionally support installation, configuration, and commissioning of hardware in secure environments. * Engage directly with users to understand operational challenges and deliver effective solutions. * Produce high quality documentation and maintain traceable, peer reviewed git practices, aligned with repository governance policies. * Mentor junior developers and contribute to team knowledge sharing.