Vizzia - Staff Fullstack Software Engineer
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Requirements
• You have 5+ years of experience, including meaningful time in a fast-paced SaaS or scale-up environment — and you've built (or significantly structured) a product from scratch • You are an expert in modern React and its ecosystem: Zustand, TanStack Query, React Hook Form, advanced hooks, performance patterns — your state management choices are justified, not defaulted to • You've shipped a scalable frontend architecture before: design system, component library, reusability patterns — and it was still being used 18 months later • You have solid Node.js / TypeScript fundamentals — enough to own the full stack when needed, not just the client side • You actively use AI coding tools (Cursor, Claude Code, Copilot) to move faster without compromising quality • You don't wait for perfect specs. You challenge the PM and designer when something doesn't make sense — with arguments, not ego. You're the kind of engineer who makes the team around them better, not just the codebase. • An engineering degree is required for this job
Responsibilities
• 1. Build the Frontend from Scratch • The mockups are in progress. The stack is defined. What's missing is the person who will turn this into a scalable, maintainable product. • Architect and build the Safety SaaS frontend using React 19, Vite, TypeScript, Tailwind CSS v4 • Co-design and maintain the design system with Walid — tokens from Figma, components in shadcn/ui, documented in Storybook • Implement state management (Zustand), server state (TanStack Query), forms (React Hook Form), and i18n (i18next) in a coherent, well-structured way • Build a custom video player (MediaBunny/MOQs/WebRTC) and handle video streaming requirements • 2. Deliver a Critical Roadmap • Ship the UK videoverbalization MVP in production by end of June 2026 • Contribute directly to the France rollout (Q4 2026) and live videoverbalization (Q1 2027) • Size tasks reliably and flag blockers early — no surprises at sprint review • 3. Own Code Quality • 3. Own Code Quality • Maintain unit test coverage above 85% on all code you touch • Set up and maintain end-to-end tests with Vitest & playwright across the full application • Write PRs that are readable without a deep dive — clear scope, clean diffs, useful context • 4. Co-architect with Jeremy • Make joint decisions on architecture, patterns, and technical direction — not just execute • Challenge Jeremy's choices constructively, and expect the same in return • Take ownership of technical decisions and stand behind them, with arguments • 5. Set the Foundation for the Team • Document conventions, contribution rules, and architectural decisions from day one • Intervene on the backend (Node.js, Hono, Drizzle ORM) and infra (Docker, K8s, Helm, CI/CD) when needed — at least enough to never be blocked • Onboard the 1–2 engineers joining in 2027 and become the natural technical reference
Benefits
• 🏝 Contrat cadre and RTT (between 8 and 12 days per year depending on public holidays) • 💻 A Mac or PC depending on your preferences • 🍜 60% coverage of meal vouchers worth €9 per worked day • 🚃/🚲 Sustainable mobility allowance • 🏥 Mutuelle (Alan) • 💼 Offices located in central Paris (9th arrondissement) • ☀️ Annual offsite with the whole team and plenty of company events • Recruitment Process • Video call with Talent Acquisition • Hiring Manager interview + culture fit with Jeremy (Hiring Manager) — 45 min • Technical case study — frontend & backend • Team interviews — PM, Designer, Cloud Engineer • Final interview with CTO
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