Build the future of cyber defence, before threats even exist. The Opportunity What if the code you wrote did not just power applications, but actively protected critical infrastructure across the world? This is an opportunity to work on a platform where performance, resilience, and security are not optional. They are essential. The Role We are looking for a Mid-Level Golang Backend Developer to join a team building a next-generation cyber security platform designed to safeguard industrial control systems. This role is ideal for someone who enjoys solving complex problems, cares deeply about secure software development, and wants their work to have real-world impact. What You Will Be Doing In this position, you will take ownership of developing and maintaining backend services written in Go. You will be working within a modern microservices architecture, designing systems that are scalable, reliable, and secure by design. Collaboration is key. You will work closely with engineers across disciplines to shape the platform's architecture and ensure everything integrates seamlessly. Security at the Core Security is at the core of everything you will do. You will embed DevSecOps principles into the development lifecycle, ensuring that security is not an afterthought but a built-in feature. From implementing automated checks in CI/CD pipelines to identifying vulnerabilities through testing and analysis, your work will directly contribute to strengthening the platform. You will apply secure coding practices, enforce access controls, and ensure data is protected both at rest and in transit, all while aligning with recognised industry standards. Quality and Reliability Beyond development, you will play an active role in maintaining quality and reliability. Writing tests, debugging issues, and working alongside QA teams will be part of your day-to-day work. You will also contribute to documentation, helping ensure that both technical and security requirements are clearly defined and understood. What You Bring This role suits someone with solid experience in Golang and a strong understanding of backend development within a microservices environment. You should be comfortable working with Docker, familiar with both relational and NoSQL databases, and confident tackling challenges in distributed systems. Just as important is your mindset. You should be curious, collaborative, and always thinking about how to build systems more securely and efficiently. Nice to Have Experience in cyber security or DevSecOps would be a strong advantage, as would contributions to open-source projects or familiarity with frameworks such as OWASP, CIS Benchmarks, or ISO standards. However, what matters most is your willingness to learn and your drive to build secure, high-quality software. What You Get In return, you will be part of a team working on genuinely cutting-edge technology, in an environment that values innovation, collaboration, and continuous improvement. The role offers a competitive salary of £55,000 to £70,000, along with performance-based bonuses and opportunities for professional growth. Location and Requirements The position is based in South West London on site 5 days per week, non negotiable, and you will need to be able to commute or relocate before starting. Applicants must also have the right to work in the UK and be able to share examples of previous work, such as a GitHub portfolio. Why Apply If you are looking for a role where your work has real impact, where security and engineering meet, and where you can continue to grow as a developer, this is an opportunity worth exploring.