Senior Full Stack Developer

VX Fiber is looking for Senior Full Stack Developers to build our SaaS platform for fibre network operations. This is not a role for someone who wants to sit at the end of a requirements pipeline and turn tickets into code. We are looking for developers who want to understand the problem, shape the solution, and use both traditional engineering and agentic coding tools to take ideas all the way into production. What you will do Own problems from unclear requirement to production. Help define the use case, work out what should be built, propose the technical approach, implement it, verify that it works, and follow it in production. Our product teams are split between OSS and BSS+, with the work regularly crossing service and team boundaries. The problems are specific, but the rules and dependencies around them can get complicated. An edge-site outage may require us to work out which ISPs are affected from network topology, while accounting for subscribers on redundant paths. An ISP expanding into a new city may sell subscriptions before the handover exists, then need those subscriptions to activate automatically once the network is ready. You will: Clarify requirements with Product and Design, working directly with engineers and domain experts. Design services and data models. Propose architectural changes for Staff Engineers and Architects to review. Build mainly backend software, while being comfortable enough in the frontend to own a feature across the stack. Design tests around failure modes. Cover retries, bad data and unavailable dependencies. Treat operability and developer experience as part of feature development. Use logs, metrics and traces to understand production behaviour, and work with the Platform team to improve deployment, local development and feedback loops. Work hands-on with agents and harnesses, including context orchestration and agentic pipelines. Improve the team through reviews, mentoring and technical discussion. Our backend is mostly Go,