Senior Fullstack Engineer - Frontend Leaning (M/F)

About the role

We are looking for a Senior Fullstack Developer (Frontend Leaning) to join our tech team.

We are developing a platform that offers an incredible opportunity to co-invest in Private Equity. To achieve our vision, we need to establish both a premium brand and platform. As we scale, our goal is to transform our platform into a highly configurable engine capable of managing third‑party funds, regardless of their origin.
As a frontend expert with a strong fullstack foundation, you will play a key role in building high‑end, scalable, and modular interfaces.

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
• Real-time dashboards: Create high‑performance investor platform with live portfolio valuations
• Advanced Data Room: Developing a high‑performance, secure Data Room for investment closing and legal auditing.
• Configurable Platform: Architecting the frontend to be fully parameterizable, allowing the platform to support external funds with diverse structures.

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.

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)

• TRPC+ Nexus (type‑safe schema generation)
• PostgreSQL & Redis
• BullMQ for job queues

API Layer

• TRPC
• 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

You’re a great match if

• Technical skills:*
  • Frontend Mastery: 5+ years building deep TypeScript/React applications, with expert knowledge of Next.js (App Router) and Server Components.
  • Architect Mindset: You enjoy building systems that are modular, scalable, and easy to configure.
  • Attention to UX/UI: You believe a financial tool should be as beautiful and intuitive as a consumer app.
  • Fullstack Capable: While you lean front, you are comfortable navigating the backend (TRPC, Prisma, PostgreSQL) to ensure a seamless end‑to‑end feature delivery.
  • Bonus: Previous experience in Fintech, Investment Platforms, or building complex B2B tools.
  • Interest: You have a genui