About the role
We are looking for a highly skilled Senior Full-Stack Developer to join our tech team.
As collaborative building 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. To achieve our vision, we need to establish both a premium brand and platform.
As our tech team continues to scale, you’ll wear many hats. Your responsibilities will include:
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
We handle sensitive financial data, which presents us with unique challenges:
Precision at scale : Our engines compute fractional ownership across thousands of investors. Rounding errors must cascade correctly - we can’t lose or create cents.
Complex financial state machines : Financial operations involve coordinated updates across multiple entities and ledger entries. State transitions must be atomic and auditable.
Multi-jurisdiction compliance : Different countries have different regulatory requirements. The system must enforce these rules programmatically while remaining flexible.
Historical reconstruction : Auditors need to see data at any point in time. Our architecture supports point-in-time queries tied to specific operations.
Domain complexity : We model sophisticated financial instruments and multi-currency valuations all 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
Application Layer:
Frontend: Next.js (App Router), Tailwind, Shadcn
Backend: TRPC + Nexus (type-safe schema generation)
Database: PostgreSQL & Redis
Job Queue: BullMQ with Redis
Design System: Figma & Storybook
API Layer:
- 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 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
You’re a great match ifTechnical skills:5+ years building full-stack TypeScript applicationsComfortable with PostgreSQL and ORMs (Prisma preferred)Understanding of financial calculations and decimal precisionBonus: Experience with fintech, regulatory compliance, or cap table managementMindset:You care about correctness-bugs in financial systems have real consequencesYou enjoy domain complexity and learning new business conceptsYou prefer clean architecture over quick hacksYou communicate clearly with non-technical stakeholdersInterest: You have a genuine interest in angel investment and the venture capital worldEntrepreneurial mindset: You thrive in fast-paced environments where you have broad responsibilitiesOwnership mentality: You are a doer and have a bias for action, no task is below youOrganization skills: You know how to prioritize and split your tasks efficientlyTeam player: You enjoy sharing and learning from each otherInitiative and innovation: You propose improvements and challenge assumptions constructivelyProduct lover: You fully understand what we want to bring to our users, and you are eager to deliver the best possible UX to themSystems thinking: You are able to step back and rethink our model globallyStrong attention to details: Code quality is important for you and you set a high barWhat we offerA front-row seat in a fast-growing startup shaping the future of investment operations - ranked 14th in the Sifted 250, which highlights Europe’s 250 startups with the highest percentage revenue growth over the past three yearsA quality-driven environmentAwesome colleagues with high ambitionsA culture of ownership, collaboration, learning and growthBeautiful offices in central Paris, Toulouse and Luxembourg + flexible remote options for people in other countriesCompetitive compensation (including an employee stock options plan)Other perks / terms and conditions :Time off: 25 days of holidays + RTT daysHealth 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 toolTransportation: Forfait Mobilité Douce (600€ /year)
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