Engineer - back End Developer

Role Overview We are looking for a Senior Backend Engineer to join our London-based engineering team. This is a hands-on, high-impact role where you will help design and build the core services, APIs, and integrations that power our security platform, working closely with a globally distributed team. Alongside building high-quality software, you will also play a key role in shaping how the team uses modern AI coding tools to improve speed and productivity without compromising on quality, security or maintainability. This role is hybrid in our office in Blackfriars London. SecurityHQ is a global cybersecurity company. And increase the value of cybersecurity investment within organizations. Free from limitations, and inclusive of all requirements, we focus on defending today, while mitigating the risks of tomorrow. SecurityHQ – We’re focused on engineering cybersecurity, by design. Backend Engineering & Service Ownership Design, build and operate production-grade Python microservices using FastAPI and Django where appropriate, applying clean architecture and modern design principles. Own services end-to-end, from design through to deployment and production support. Cloud & Platform Engineering Deploy and operate services on AWS using technologies such as EKS, PostgreSQL, messaging systems and object storage. Manage infrastructure through Terraform and contribute to a GitOps-based deployment model using GitHub Actions and FluxCD. Work closely with frontend engineers in an Angular microfrontend environment to design clean, well-versioned and user-friendly API contracts. Participate in architecture design, code reviews and technical discussions, contributing to overall engineering quality and standards. Quality, Testing & Observability Build and maintain comprehensive test suites including unit, integration, contract and end-to-end testing. Treat testing, monitoring and CI signals as essential components of delivery. Agile Delivery & Continuous Improvement Contribute to agile ceremonies including refinement, estimation and retrospectives. Support continuous improvement across engineering practices, ways of working and use of AI-assisted development tools. 5 or more years of backend engineering experience with Python as a primary language, delivering and operating services in production environments. ~ Strong experience with FastAPI or Django, including API design, async patterns, dependency management and authentication and authorisation. ~ Strong PostgreSQL experience, including schema design, indexing and performance optimisation. ~ Hands-on experience with AWS and containerised workloads, ideally using Kubernetes or EKS. ~ Strong foundations in testing, observability, security and technical documentation. ~