About the Client
Global FinTech startup, is building a modern financial intelligence platform that helps teams analyze performance, forecasts, and operational metrics across time. The product is data-heavy, highly interactive, and correctness-driven. Accuracy, transparency, and trust are core principles.
We are early-stage but live, with real customers and real financial data. We move fast, but we do not break fundamentals.
Role Overview
We are looking for a Senior Fullstack Engineer to help design, build, and evolve core product functionality across frontend, backend, and data layers.
This is a hands-on role with real ownership. You will work closely with Product, QA, and other engineers to deliver features end-to-end, from API design to UI behavior to data correctness.
This role is not about managing people. It is about shipping high-quality software in a complex, data-driven environment.
What You Will Do
- Design and build end-to-end product features, from UI to backend logic to database interactions
- Implement and evolve core workflows, including:
- Data ingestion and connector management
- Metrics configuration and overrides
- Time-based grouping (daily, weekly, monthly, quarterly, yearly)
- Forecasting, reporting, and analytics views
- Design, build, and maintain NestJS-based backend services and integrations, including API endpoints, domain logic, data validation, and integration workflows
- Work within a modular monolith backend, contributing to shared domain logic and internal service boundaries
- Write efficient, readable SQL for data retrieval, aggregation, and validation
- Ensure correctness of financial calculations and aggregations
- Collaborate closely with:
- Product on requirements and edge cases
- QA on testability and bug resolution
- Other engineers on architecture and code quality
- Review code and contribute to technical standards and best practices
- Participate in release planning and production readiness
Required Skills & Experience
- 5+ years of professional software engineering experience
- Strong experience building fullstack web applications
- Strong backend experience with Node.js-based API services, including business logic and data validation
- Strong SQL skills (required):
- Solid frontend experience with:
- React
- TypeScript
- Modern component-based UI patterns
- Writing complex queries
- Aggregations and joins
- Reasoning about data correctness and performance
- Experience working with relational databases (PostgreSQL preferred)
- Comfort working in production systems with real users and data
- Ability to reason about edge cases, failure modes, and data consistency
Nice to Have
- Experience with financial, analytics, or reporting platforms
- Familiarity with React-based frontends
- Exposure to PostgreSQL or similar relational databases
- Experience working in early-stage or startup environments
- Exposure to Python is a plus, but the core backend is implemented in Node.js
What Success Looks Like in the First 90 Days
- You understand client’s data model and core product flows
- You ship multiple production features end-to-end
- Your code is readable, testable, and trusted by the team
- You proactively surface edge cases and data issues
Product and QA rely on you for clarity and execution
