About The Role We are looking for a highly skilled
Senior Backend 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
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
Domain-Driven Design with shared domain libraries
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 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:
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:
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:
You have a genuine interest in angel investment and the venture capital world
Entrepreneurial mindset:
You thrive in fast-paced environments where you have broad responsibilities
Ownership mentality:
You are a doer and have a bias for action, no task is below you
Organization skills:
You know how to prioritize and split your tasks efficiently
Team player:
You enjoy sharing and learning from each other
Initiative and innovation:
You propose improvements and challenge assumptions constructively
Product lover:
You fully understand what we want to bring to our users, and you are eager to deliver the best possible UX to them
Systems thinking:
You are able to step back and rethink our model globally
Strong attention to details:
Code quality is important for you and you set a 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, which highlights Europe’s 250 startups with the highest percentage revenue growth over the past three years
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 people in 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)
Recruitment 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.