Senior Backend Developer

Senior Backend Developer - Toulouse (M/F) 1 day ago Be among the first 25 applicants About The Role We are looking for a highly skilled Senior Backend Developer to join our tech team. Collaboration is at the core of how we operate, not just within the engineering team but across all departments. We are developing a platform that offers an incredible opportunity to co‑invest in the Private Equity sector. Our vision is to establish both a premium brand and a world‑class platform. Responsibilities Collaborate closely with the team on product strategy, assess effort required for various features, and make key technical decisions. Support overall decision‑making and the company’s sustained growth. Develop, deploy, and maintain new features. Conduct code reviews and facilitate 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 a 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: Computing fractional ownership across thousands of investors without losing or creating cents. Complex financial state machines: Multi‑entity ledger updates with atomic, auditable transitions. Multi‑jurisdiction compliance: Programmatically enforce varying regulatory requirements while remaining flexible. Historical reconstruction: Support point‑in‑time queries for auditors. 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 end‑to‑end 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. Backend (Your Focus): GraphQL Yoga + Nexus for type‑safe schema generation. PostgreSQL with Prisma ORM (migrations, transactions, type‑safe queries). Redis for caching and pub/sub. BullMQ for job queues with Bull Board admin UI. Zod for runtime validation at all API boundaries. OpenTelemetry for distributed tracing. GCP Cloud Run for container deployments. Frontend (Context): Next.js (App Router), Tailwind, Shadcn. Apollo Client for GraphQL. API Layer: GraphQL (client‑facing) with type‑safe resolvers. REST (admin‑facing) with Zod schemas via lib/api‑schemas. Cloud Infrastructure: Google Cloud Platform (Cloud Run, GCS). Container‑based deployments. Observability: OpenTelemetry for distributed tracing. 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 a thoughtful review. AI‑assisted development: Leverage AI tools while keeping humans in the loop for all decisions. You’ll Be a Great Match If Technical Skills: 5+ years building backend TypeScript/Node.js applications. Strong experience with PostgreSQL and ORMs (Prisma preferred). Proficiency with GraphQL server development (Yoga, Nexus, or similar). Experience with job queues and async processing (BullMQ, Redis). Understanding of financial calculations and decimal precision. Plus: Experience with REST API design and OpenAPI/Zod schemas. Bonus: Experience with fintech, regulatory compliance, or audit trails. Mindset: Care about correctness – bugs in financial systems have real consequences. Enjoy domain complexity and learning new business concepts. Prefer clean architecture over quick hacks. Communicate clearly with non‑technical stakeholders. Interest in angel investment and the venture capital world. Entrepreneurial mindset – thrive in fast‑paced environments with broad responsibilities. Ownership mentality – a doer with a bias for action; no task is below you. Strong attention to detail – code quality is important. 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 our users and deliver the best UX. Systems thinking – able to step back and rethink our model globally. 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 with awesome colleagues and high ambitions. A culture of ownership, collaboration, learning and growth. Beautiful offices in central Paris, Toulouse and Luxembourg + flexible remote options for people in other countries. Competitive compensation, including an employee stock‑options plan. Other perks: 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 as the standard working tool. Transportation: Forfait Mobilité Douce (540€ /year). Recruitment Process First interview with our Talent Recruiter. Second interview with Simon, our Founder & CTO. Case study with a tech team member. Cultural fit interview with another founder. Diversity & Inclusion 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. #J-18808-Ljbffr