Our client is a forward thinking, ambitious infrastructure and managed services provider in London. We are looking for a Senior Full Stack Engineer to own end-to-end delivery of critical features, and lead the team to new heights.
Our client is an infrastructure communications technology company providing end-to-end fibre solutions and now Cloud solutions, Wi-Fi, Firewalls/Security, SD WAN, Managed LAN and UC services for businesses and wholesale/carrier/channel organisations across London.
What you will do:
We are looking for a Senior Full Stack Engineer to own end-to-end delivery of critical features, drive architectural excellence, and establish best practices. You’ll work hands-on across React, Node.js, and Python services, own our CI/CD and DevOps processes, integrate with network-centric systems, and mentor the wider engineering team as we grow.
Key responsibilities:
- Architect, build & implement scalable features in our React frontend and Node.js / Python backend (FastAPI, Celery)
- Design integrations with network devices, IPAM, monitoring platforms, Wi-Fi authentication
- systems, CRMs and partnered PropTech tools
- Continually hone and perfect our homegrown DevOps and CI/CD processes by further developing GitHub Actions pipelines, Terraform definitions and observability integrations.
- Ensure quality & reliability: establish testing best practices (unit, integration, end-to-end), conduct code reviews and demand high quality standards
- Shape and refine our cloud-native platform to optimise performance, security and scalability
- Mentor & lead intermediate developers, imparting knowledge and fostering a culture of clean code, peer review and shared ownership.
- Collaborate cross-functionally with product, operations and customer success to translate requirements into robust technical solutions.
A good fit candidate will have:
- 5+ years hands-on as a full stack engineer in a SaaS environment
- Expert in React (hooks, state management, performance)
- Strong backend skills in Node.js (Express) and Python (FastAPI, Celery)
- Deep familiarity with Microsoft Azure (App Services, Functions, networking)
- Proven experience working with network-focused systems (SNMP, IPAM, CLI automation)
- Solid understanding of Auth0 (or similar OAuth/OIDC) and secure authentication flows.
- Skilled with GitHub and GitHub Actions for automated CI/CD.
- Experience with infrastructure as code (ARM templates, Terraform, Bicep).
- Comfortable writing and maintaining tests (unit, integration, e2e).
- Excellent communication, problem-solving skills and ability to thrive in a fast-paced startup.
Desirable Experience:
- Background in network engineering or close collaboration with network operations teams.
- Experience building platform integrations and/or asynchronous automation systems.
- Open-source contributions in related domains.
- You’ve worked at an early-stage startup before and understand what “hands-on” really means.
