Full Stack Developer (Next.js / NestJS)

You will join a fast-growing climate tech company dedicated to helping organizations measure and reduce their carbon footprint. The platform transforms complex environmental data from logistics and supply chains into actionable insights. As a developer, you will have a direct impact on the product’s architecture, building a scalable SaaS solution that helps solve real-world environmental challenges.

Details

• Sector: Climate Tech / Sustainability

• Location: Remote or hybrid from Kraków, Wrocław, Rzeszów, or Poznań

• Contract Type: B2B

• Culture: Informal atmosphere with a focus on work-life balance and flexible hours

Responsibilities

• Full Stack Development: Building and scaling production-ready applications using Next.js and NestJS.

• Architecture & Design: Making critical decisions regarding system structure, scalability, and maintainability.

• Data Processing: Working with large datasets related to transport and emissions, ensuring high performance and clean architecture.

• Collaboration: Working closely with product and business stakeholders to influence the roadmap and technology decisions.

• API Design: Designing and implementing robust REST APIs.

Requirements

• Backend Expertise: Solid experience with Node.js and NestJS in backend development.

• Frontend Mastery: Strong hands-on experience with Next.js and React.

• Database Skills: Experience with PostgreSQL, including data modeling, performance tuning, and complex queries.

• Core Languages: Excellent knowledge of TypeScript and modern JavaScript (ES6+).

• Language: Fluent English for international collaboration.

• Mindset: A strong ownership mindset and problem-solving skills to work independently on complex features.

Nice to Have

• Cloud & DevOps: Experience with Azure (or similar), Docker, and CI/CD pipelines.

• Domain Interest: A genuine interest or prior experience in the sustainability and climate tech domain.