Job DescriptionStartupFuel is hiring a Full-Stack Software Engineer to build and scale the
SaaS platform behind DiligenceGPT™.
This role focuses on the
product, platform, and infrastructure layer that powers AI-driven workflows. You will build the systems that allow investors to securely interact with AI outputs, documents, and data.
You will work closely with AI engineers to integrate agent outputs into dashboards, workflows, and enterprise-grade features. The emphasis is on clean architecture, performance, and reliability.
Key responsibilities include:
- Build and maintain full-stack features using the MERN stack (MongoDB, Express, React, Node.js)
- Tailwind CSS for design
- Design and implement REST APIs and backend services
- Work with RabbitMQ (RMQ) for asynchronous processing, background jobs, and event-driven workflows
- Design efficient MongoDB schemas, indexes, and data models
- Handle authentication, authorization, and secure API access
- Write clean, maintainable, and scalable code
- Debug production issues and optimize performance
- Collaborate on system design, architecture, and technical decisions
- Participate in code reviews and follow best engineering practices
RequirementsRequired Skills
- Strong experience with JavaScript / TypeScript
- Hands-on experience with Node.js & Express
- Solid knowledge of React (hooks, state management, component architecture)
- Experience working with MongoDB (schema design, aggregation, indexing)
- Practical experience with RabbitMQ (RMQ) or similar message queues
- Understanding of async programming, promises, and event-driven systems
- Familiarity with REST APIs, controllers, DTO-like structures, and validation
- Experience using Git & GitHub in a team environment
Good to Have
- Experience with Docker and basic deployment workflows
- Knowledge of Redis for caching
- Familiarity with SaaS concepts: multi-tenancy, roles, permissions
- Experience working in early-stage startups
- Understanding of basic system design and scalability concepts
BenefitsOwnership over a core B2B SaaS platformClose collaboration with AI engineers shipping LLM featuresExposure to enterprise customers and investor workflowsClear growth path with increasing technical ownershipCompetitive compensationCollaborative, high-ownership culture working with global talent and hands-on, visionary leadership 
