Senior Frontend Developer

Senior Frontend Developer (M/F) – Roundtable We are looking for a highly skilled Senior Frontend Developer to join our tech team. Responsibilities Collaborating closely with the team on product strategy, assessing the effort required for various features, and making key technical decisions. Supporting the overall decision‑making process and the company's sustained growth. Developing, deploying, and maintaining new features. Conducting code reviews and facilitating knowledge sharing within the team. What you'll work on Cap table engine: Build systems that track ownership across thousands of investors with cent‑level precision. Multi‑country compliance: Implement investor qualification rules and regulatory workflows across jurisdictions. Multi‑asset platform: Extend the platform to support diverse asset classes and investment structures. Financial operations: Design robust workflows for complex financial transactions and fund operations. Real‑time dashboards: Create high‑performance investor platform with live portfolio valuations. Document automation: Generate legal documents (subscription agreements, shareholder reports) from dynamic templates. Security: Protect sensitive financial data with robust authentication, authorization, and encryption. Technical challenges Precision at scale: Avoid rounding errors in fractional ownership calculations. Complex financial state machines: Ensure atomic and auditable state transitions. Multi‑jurisdiction compliance: Programmatically enforce varying regulatory requirements. Historical reconstruction: Support point‑in‑time queries tied to specific operations. Domain complexity: Model sophisticated financial instruments and multi‑currency valuations with type safety. Overall tech stack Type Safety: 100% TypeScript across the entire stack (frontend, backend, shared libraries) Quality Assurance Vitest for unit/integration testing Playwright for E2E testing Biome for linting and formatting Zod for runtime validation at all system boundaries Architecture pnpm workspace monorepo with Turborepo for build orchestration Domain‑Driven Design with 20+ shared domain libraries Frontend (your focus) Next.js (App Router) with React Server Components Tailwind CSS with custom design tokens Shadcn/Radix UI for accessible, composable components Apollo Client with cache management and optimistic updates React Hook Form for complex form handling TanStack Table/Virtual for high‑performance data grids Storybook for component documentation and visual testing Playwright for E2E testing Backend (context) GraphQL Yoga + Nexus (type‑safe schema generation) PostgreSQL & Redis BullMQ for job queues API Layer GraphQL (client‑facing) with Apollo Client REST (admin‑facing) with Zod schemas Cloud Infrastructure Google Cloud Platform (Cloud Run, GCS) Container‑based deployments Observability Datadog for monitoring (browser + server) Sentry for error tracking AI Integration OpenAnthropic‑powered document analysis and data extraction pipelines. Engineering culture Domain‑Driven Design: Coherent domains with clear boundaries Strict TypeScript: No any types, Zod validation at all boundaries Observability‑first: Datadog + OpenTelemetry + Sentry from day one Code review culture: Every PR gets thoughtful review AI‑assisted development: We leverage AI tools (IDE assistants, PR review) to augment engineers while keeping humans in the loop for all decisions Technical skills 5+ years building frontend TypeScript applications Strong experience with React and Next.js (App Router) Proficiency with Tailwind CSS and component libraries (Shadcn, Radix UI) Experience with GraphQL clients (Apollo Client preferred) Understanding of design systems and Storybook Experience with data visualization and high‑performance UIs Bonus: Experience with fintech or complex financial dashboards Mindset You care about correctness – bugs in financial systems have real consequences You enjoy domain complexity and learning new business concepts You prefer clean architecture over quick hacks You communicate clearly with non‑technical stakeholders Interest & Traits General interest in angel investment and the venture capital world Entrepreneurial mindset: thrive in fast‑paced environments with broad responsibilities Ownership mentality: you are a doer, no task below you Organization skills: prioritize and split tasks efficiently Team player: enjoy sharing and learning from each other Initiative and innovation: propose improvements and challenge assumptions constructively Product lover: fully understand what we want to bring to users, eager to deliver best UX Systems thinking: step back and rethink our model globally Strong attention to detail: code quality important, set high bar What we offer A front‑row seat in a fast‑growing startup shaping the future of investment operations – ranked 14th in the Sifted 250 A quality‑driven environment Awesome colleagues with high ambitions A culture of ownership, collaboration, learning and growth Beautiful offices in central Paris, Toulouse, and Luxembourg + flexible remote options for other countries Competitive compensation (including an employee stock options plan) Other perks / terms and conditions: Time off: 25 days of holidays + RTT days Health insurance: Mutuelle Alan (50% covered by the company) Meals: A restaurant card with our partner Swile (€10 per workday) Tools: A MacBook is our standard working tool Transportation: Forfait Mobilité Douce (€540 /year) Interview process First interview with our Talent Recruiter Second interview with Simon, our Founder & CTO Case study with a tech team member Cultural fit with another founder Roundtable is committed to creating a diverse environment. All qualified applicants will receive consideration for employment irrespective of gender, origins, identity, background, and orientations. We encourage all applicants, especially those from underrepresented groups, to apply for our open positions. We believe that diversity, equity and inclusion are fundamental pillars. Seniority level Mid‑Senior level Employment type Full‑time Job function Information Technology Executive Offices Referrals increase your chances of interviewing at Roundtable by 2×. #J-18808-Ljbffr