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Senior FS Engineer

Senior FE Engineer

London, UK 🇬🇧

Our client is one of the key cybersecurity companies in UK. Here are some details from their team:

We are a leading platform helping managed service providers (MSPs) and IT service organizations automate their cybersecurity assurance, compliance, and governance. We bridge the gap between technical controls and business accountability, providing automated evidence collection, security control mapping, and compliance workflows that make assurance continuous, not just periodic. Our mission is to help MSPs and IT providers prove, improve, and scale their cybersecurity maturity with clarity, automation, and confidence.

Role Overview

We are seeking a Fullstack Developer to design, build, and maintain secure, performant, and scalable web applications. The role spans both frontend and backend development, contributing to our SaaS platform’s core modules, integrations, and internal tooling. You’ll play a key role in shaping the future of cybersecurity assurance platform, turning compliance, governance, and automation challenges into elegant engineering solutions that scale.

Responsibilities

  • Build and ship impactful features across the stack using NestJS, React, and TypeScript.
  • Design and optimize APIs using Prisma ORM, ensuring secure, reliable, and high-performance backend services.
  • Implement scalable job queues and real-time workflows using BullMQ and Redis.
  • Develop integrations with third-party systems and internal APIs to expand platform capabilities.
  • Automate and enhance security controls, embedding accountability and compliance within the product.
  • Collaborate cross-functionally with product, security, and operations teams to deliver measurable, high-quality outcomes.
  • Contribute to CI/CD pipelines, testing automation, and code reviews to uphold engineering excellence.
  • Rapidly prototype and iterate based on real user feedback and usage data.
  • Instrument applications with Sentry for error tracking, performance monitoring, and proactive alerting.
  • Leverage AI coding assistants to increase delivery velocity while upholding security, maintainability, and code quality.
  • Leverage Model Context Protocol (MCP) servers to securely connect internal tools and context into AI-assisted developer workflows.

Core Tech Stack

  • Frontend: React, TypeScript, Tailwind CSS, Vite
  • Backend: NestJS, Node.js, Prisma ORM, PostgreSQL
  • Infrastructure: Azure (Container Apps, Keyvault, Azure Frontdoor), Terraform.
  • Async Processing: BullMQ, Redis
  • Testing & QA: Jest, Playwright
  • Monitoring & Observability: Sentry
  • CI/CD: GitHub Actions, automated test and deployment pipelines
  • Developer Tooling: GitHub Copilot, Claude Code, OpenAI Codex

Skills & Experience

  • Strong proficiency in React and NestJS development.
  • Experience with API integration and authentication standards (OAuth, WorkOS).
  • Understanding of security-first engineering principles (RBAC, secrets management, data integrity).
  • Experience with BullMQ and Redis for background processing and distributed task management.
  • Familiarity with modern DevOps practices: testing, code coverage, CI/CD, and Git workflows.
  • Excellent collaboration and documentation skills.
  • Comfortable with AI-assisted development using GitHub Copilot, Claude Code, and OpenAI Codex to accelerate implementation while maintaining code quality.

Behavioral Expectations

  • Writes code that is secure, observable, and testable by design.
  • Balances velocity with maintainability and regulatory alignment.
  • Owns delivery end-to-end, from architecture to release.
  • Embodies principles of transparency, accountability, and continuous improvement.
  • Seeks continuous user feedback and iterates quickly to improve usability and outcomes.

Summary

Join us in shaping the future of cybersecurity assurance. You’ll work at the intersection of DevSecOps and product innovation, building tools that help organizations prove their security posture with confidence.

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