Senior Software Engineer (Developer Experience)

Location: London, England, United Kingdom; hybrid, with at least two days per week in the office

Company

hirify.global is an online fashion retailer operating a platform used by millions of customers worldwide.

What you will do

• Lead the design and delivery of complex Developer Experience platform features across Backstage, golden path templates, engineering metrics, DORA instrumentation, and AI-assisted tooling.
• Own architecture and engineering quality for developer portal components, plugins, scaffolder templates, catalogue integrations, and service templates.
• Embed agentic AI capabilities into the developer portal and toolchain using GitHub Copilot, MCP servers, Claude workflows, and related technologies.
• Define evaluation frameworks, guardrails, and reliable patterns for AI-assisted engineering at scale.
• Set technical direction, make architecture decisions, mentor junior and mid-level engineers, and maintain high standards for testing, documentation, and code review.
• Collaborate with Release Engineering, Developer Infrastructure, Cyber Security, product engineering, OCTO, and engineering management to reduce developer friction.

Requirements

• Proven experience delivering production-grade software in a platform, developer experience, or internal developer platform team.
• Deep proficiency in TypeScript/JavaScript and/or C#/.NET, Node.js, or Go, with experience writing performant, production-ready code.
• Proven Git experience, including branching strategies, pull request workflows, and high-quality code reviews.
• Experience with Backstage or a comparable internal developer portal; catalogue modelling, plugin development, scaffolder templates, or TechDocs experience is advantageous.
• Solid understanding of CI/CD, modern software delivery, golden paths, and fast, consistent, safe developer onboarding.
• Confidence with Docker, GitHub Actions or Azure Pipelines, and Azure platform fundamentals.
• Experience with React and component-based frontend development.
• Hands-on experience using agentic AI tools such as GitHub Copilot, Claude Code, or equivalent, including evaluating tools, designing reliable system context and patterns, and identifying high-value agentic approaches.
• Track record of setting technical direction, making architecture decisions, delivering shared platforms for multiple product teams, collaborating across engineering and security functions, and mentoring engineers.

Nice to have

• Experience with MCP server integration, LLM tool-use patterns, and AI-assisted developer workflows beyond standard Copilot usage.
• Experience with DORA metrics, developer productivity instrumentation, or DevEx research methods.
• Familiarity with paved roads, fitness functions, and service ownership taxonomy.
• Experience with CLI tooling, documentation pipelines, or service catalogue governance.
• Knowledge of evaluation and guardrail design for AI features in engineering.

Culture & Benefits

• In-person collaboration is expected at least two days per week in the office.
• 25 days of paid annual leave plus an additional celebration day.
• Private medical care and a flexible benefits allowance that can be taken as cash or used for other benefits.
• Employee discount, access to employee sample sales, and opportunities to represent hirify.global at industry events.
• Inclusive workplace with support available for adjustments throughout the hiring process.