e. g. Python, Warsaw, Startup

Senior Frontend Team Lead

location-pointer-icon Warsaw
B2B
Front-end

We are looking for a Frontend Team Lead to join the team. Expert-level frontend engineering combined with technical leadership. Drive technical direction, mentor engineers, and deliver high-quality, performant, accessible interfaces for our confidential computing platform.

About:

Our client is on a mission to redefine secure cloud computing. They deliver a full-stack confidential cloud platform leveraging OpenStack and confidential computing technologies (such as Intel TDX/SGX, AMD SEV) to ensure that enterprise workloads remain protected—encrypted in transit, at rest, and in use. At Client’s company, security is non-negotiable: our architecture enables zero-trust, tamper-proof data integrity, robust attestation, and out-of-the-box compliance for regulated and privacy-sensitive industries.

Responsibilities:

  • Lead frontend squad (2–6 engineers); run planning, sprints, and technical decision-making;
  • Mentor developers, conduct code reviews, and create growth plans;
  • Partner with Product, Design, Backend, and DevOps to deliver robust UI solutions;
  • Set coding standards, testing strategies, and CI/CD quality gates;
  • State-of-the-Art Expectations:
  • Modern rendering: SSR/SSG/ISR, streaming, partial hydration, islands architecture;
  • Complex architectures: micro-frontends (Module Federation), modular monolith UIs, design systems;
  • Emerging tech: Edge functions, WebAssembly, PWA patterns, Signals/fine-grained reactivity.

Requirements:

  • Experience: 7–10+ years frontend development; 2–3+ years in senior/lead capacity;
  • Education: BS/MS in Computer Science or equivalent practical experience;
  • Technology Stack (2025/2026);
  • Languages: TypeScript (required), modern JavaScript (ES2024+);
  • Frameworks: React 19+ (RSC, Server Actions, React Compiler, Suspense); Next.js 14+, TanStack Start, or Remix. Vue/Svelte/Angular acceptable;
  • Build tools: Vite (preferred), Turbopack; Rust tooling (Rolldown, Oxc, SWC); Biome for linting;
  • Testing: Vitest/Jest, Playwright (with AI-assisted testing), Testing Library, MSW;
  • Styling: Tailwind CSS, shadcn/ui, modern CSS (Container Queries, View Transitions), Storybook 8+;
  • State & data: TanStack Query, Zustand/Jotai; REST, GraphQL, tRPC, WebSockets;
  • Architecture & Quality;
  • Patterns: Server/Client boundaries, streaming SSR, micro-frontends, code splitting, edge rendering;
  • Performance: Core Web Vitals (LCP, INP, CLS), bundle optimization, caching strategies;
  • Accessibility: WCAG 2.2 AA compliance, European Accessibility Act (EAA), EN 301 549;
  • Security: XSS, CSRF, CSP, secure authentication patterns;
  • AI-assisted development: GitHub Copilot/Cursor proficiency, AI-assisted testing workflows.

Would be a plus:

  • Security/confidential computing experience;
  • Enterprise/government sector projects;
  • Open-source contributions;
  • Monorepo tooling (Nx, Turborepo);
  • Backend familiarity (Node.js, Go);
  • Cloud platforms (OpenStack, K8s).

We offer:

Professional Development: Free English courses, free access to the corporate Udemy account, corporate digital library subscription, possibility to participate and share your knowledge as a speaker in our internal meetups.

Benefits: 100% paid vacation and sick leaves.

Yael Acceptic
Outstaff
10 - 50
Industry
Data Science, E-commerce, Fintech/Banking, IoT, Medtech/Healthcare
Founded
2009

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