Full Stack Developer

Overview

About Carboledger

Carboledger is building the next generation of sustainability automation and mass balance accounting for global manufacturers.

We work with enterprises across chemicals, rubber, plastics, automotive, lubricants, and more — solving real material traceability, AI-driven compliance, and certificate workflows.

You will be joining the founding engineering team, owning core modules end-to-end and shaping the technical direction of a high-growth climate-tech startup.

Role Overview

We are looking for a fundamentally strong Full-Stack Developer who can build complete features end-to-end — frontend, backend, database, integrations, and occasional DevOps.

This role is perfect for someone who enjoys:

• Owning a feature completely (UI → API → DB → deploy)
• Solving complex workflows (forms, certificate logic, AI automation)
• Working across React, Node.js, and Python (FastAPI workers)
• Being flexible: Ability to work on multiple tech stacks
• Working fast in a startup environment with high autonomy

You will work directly with the Founders, contributing to architecture, performance improvements, and product innovation.

Key Responsibilities

Frontend

• Build enterprise-grade UIs using React, MUI
• Implement complex dynamic forms using react-hook-form
• Implementation multi tenant views
• Create dashboards, tables, filters, and real-time UI components
• Handle timezone conversion, i18n, and multi-tenant UI logic
• Convert business logic into clean, maintainable UI components

Backend

• Develop scalable APIs using Node.js (Express)
• Work with Prisma, PostgreSQL, Redis/Valkey
• Implement backend logic for sustainability workflows
• Build/extend background workers (RabbitMQ consumers)
• Implement validations, access control, error handling
• Write clean business logic following architecture guidelines

AI/Python (Exposure, not mandatory initially)

• Consume FastAPI microservice endpoints
• Trigger async PDF/OCR pipelines
• Handle AI-driven suggestions and form builder results

General

• Own features from spec → implementation → testing → deployment
• Write clean, tested, maintainable code
• Participate in design discussions and architecture reviews
• Debug production issues when needed
• Step in to help on frontend/backend when another dev is unavailable
• Work closely with the founding engineer for high-level planning

Required Skills

Must-Have

• Strong experience in React.js, TypeScript, HTML/CSS, MUI
• Strong backend development with Node.js + Express
• Experience with PostgreSQL and writing SQL queries
• Hands-on with Prisma ORM
• Understanding of different design patterns
• Experience building end-to-end features independently
• Good understanding of REST APIs, auth, sessions, tokens
• Ability to debug issues across frontend, backend, and DB
• Comfortable with Git, CI/CD basics

Good to Have

• Experience with Python + FastAPI
• RabbitMQ / Redis / background workers
• AWS (ECS, EB, S3, CloudFront, RDS)
• PDF parsing, OCR, or AI integration experience
• Understanding of system design & scalable architectures
• Experience with internationalization and timezone handling

Soft Skills

• Ownership mindset
• Strong problem-solving
• Ability to work fast and iteratively
• Clear communication
• Comfortable working in an early-stage startup
• Willingness to learn new tools and switch tasks quickly

What You Will Build

• Dynamic compliance & certificate workflows
• Real-time dashboards & reporting
• AI-driven form automation
• Massive PDF → structured data pipelines
• SAP & external integrations
• Multi-tenant enterprise SaaS modules
• High-availability architectures for global customers

Why Join Us

• Work directly with founders on high-impact climate-tech problems
• Build an industry-first product with global enterprise adoption
• Extremely high ownership — you own features end-to-end
• Opportunity to grow into Tech Lead / Engineering Manager
• Flexible work culture, zero bureaucracy
• Be part of a high-growth, mission-driven startup

Compensation

Competitive salary based on experience + meaningful ESOPs for early engineers.