Freelance Opportunity: Full-Stack Developer TypeScript / MERN / tRPC

We are looking for an experienced Freelance Full-Stack Developer to join an exciting project involving data-intensive applications for the petroleum/energy domain.

The ideal candidate will have strong hands-on experience with TypeScript, React, Node.js, MongoDB, and tRPC, with the ability to build scalable, production-ready applications.

Role

Freelance Full-Stack Developer

Experience full-stack development experience

Core Technical Requirements

Frontend

• Expert-level TypeScript & JavaScript
• React
• Material UI (MUI)
• React Hook Form
• Experience building complex, data-heavy UIs

Backend

• Node.js
• Express.js
• tRPC
• REST/API development
• Strong understanding of end-to-end type safety

Database

• MongoDB
• Schema design for complex/relational-like data
• Query optimization and performance tuning
• Experience handling large datasets and time-series data

Tools & Engineering

• Git
• Docker preferred
• Unit & integration testing
• Production deployment experience

Key Responsibilities

• Architect and develop new features across the full application stack
• Build responsive and data-visualization-heavy interfaces using React + MUI
• Implement complex forms and validation using React Hook Form
• Develop type-safe APIs using Node.js, Express.js & tRPC
• Design and optimize MongoDB schemas and queries
• Work with large volumes of technical/time-series data
• Maintain strong TypeScript standards across the application
• Write comprehensive unit and integration tests
• Collaborate with petroleum engineers and product managers to convert domain requirements into technical solutions
• Ensure application performance, scalability, reliability, and maintainability

Domain Knowledge

Experience or strong interest in petroleum engineering / energy technology is highly desirable.

Exposure to any of the following is a plus:

• Production data
• Well data / well logs
• Drilling data
• Reservoir monitoring
• Decline Curve Analysis (DCA)

Nice to Have

• D3.js, ZingChart, or similar visualization libraries
• GCP, AWS, or Azure
• Mapping / GIS application development
• Petroleum engineering software or workflows
• Decline Curve Analysis experience
• Open-source contributions
• Docker & containerized deployments