Frontend engineer in cloud infrastructure

Virtuozzo builds the infrastructure behind the alternative cloud. Virtuozzo Infrastructure System (V/IS) runs compute, storage and networking on commodity hardware. Virtuozzo Platform is the multi-tenant control plane service providers use to sell cloud to their own customers. Our frontend team owns the admin and self-service portals for both. These are dense, data-heavy UIs on top of storage clusters, VMs, networks, S3, tenants and pricing.

• Ship features end to end, from spec to production, in two codebases: Virtuozzo Platform: React + TypeScript, an Nx monorepo, Vite, and Module Federation micro-frontends for tenant management, pricing, monitoring, S3 and settings. V/IS: a large Vue + TypeScript application.
• Work spec-first. A PRD becomes user stories, then a feature spec, then code, with traceable IDs linking requirements, design and implementation.
• You’ll write specs precise enough for an agent to implement, then review what comes back with a critical eye.
• Build and improve the agent harness: AGENTS.md and rules, skills and subagents, hooks that verify and guard changes, MCP servers, evals for skills, and a loop that turns repeated review comments into lint rules.
• Work contract-first with backend. Agree OpenAPI/TypeSpec contracts before implementation, generate typed clients and validation, and build permission-aware (RBAC) UI from those contracts.
• Own quality. That means Vitest, Storybook interaction tests and Playwright e2e running from pull requests.
• Every bug fix comes with a test, and agents help reproduce and re-verify bugs on real dev stands.
• Prototype fast. Build clickable prototypes with AI against our real UI kit to validate ideas with PM and UX before anyone commits to building them.
• Modernize the stack. Move V/IS toward micro-frontends and a shared design system, set per-remote bundle budgets, and track Core Web Vitals from real users.
• Work closely with the Backend, Storage, QA, Product and Design teams across Europe.

• 5+ years building production web applications, with strong TypeScript and deep React (rendering, state, routing, performance).
• You use AI coding agents (Claude Code, Cursor, Codex or similar) every day.
• You can say concretely where they fail and what you did about it: context, rules, tests, hooks.
• You’re comfortable writing specs and ADRs, and you think in contracts and interfaces rather than screens alone.
• Testing discipline: component tests and Playwright e2e.
• You’d rather fix a flaky test than retry it.
• Experience with complex UIs: large tables, wizards, long-running async tasks, realtime updates over websockets.
• Modern tooling: Vite, monorepos (Nx, pnpm), CI/CD pipelines, Module Federation.
• Security, accessibility and performance by default (OWASP, CSP, WCAG, Web Vitals).
• Будет плюсом: Vue experience. It’s a real plus, since V/IS is built on it; Infrastructure domain knowledge: virtualization, storage, networking, OpenStack, Kubernetes, S3; Multi-tenant SaaS, RBAC, billing or pricing systems; You’ve built MCP servers, agent skills or eval suites, or contributed to open source; Design systems and Storybook

• You’ll find out what agentic development really looks like in a mature product with 1,000+ components, not a greenfield demo.
• You’ll shape the tools and practices the whole team uses, not just follow them.
• The products are real infrastructure that service providers run their business on.
• Remote and flexible working hours for EMEA (Europe locations only)
• B2B contracting friendly
• Group private medical insurance or medical allowance
• Professional growth: training budget, certification support, mentorship, and career progression pathways
• Inclusive, multicultural team: work alongside talented engineers from across the globe on infrastructure-grade cloud products
• Employee perks: recognition programs, referral bonuses, and learning initiatives such as book clubs or tech talks
• Share Options – shares in our success with share options