Full Stack Developer

JR United Kingdom; East Horsley; On-site; GBP 50,000 - 75,000; Full time

Job summary

A leading company in sustainability data analytics is seeking a Full Stack Developer to enhance their SaaS platform for ESG reporting. Ideal candidates will have extensive experience in React, Python, and Django, and a passion for sustainability. The role offers a hybrid work setup and a flexible contract type, ensuring a collaborative team environment focused on impactful solutions.

Benefits

Flexible form of contract (B2B / UoP / other)

Hybrid work setup

Benefits package (private medical care, sports card, learning budget)

A motivated team

A meaningful mission

Qualifications

• 5+ years of experience in full stack development.
• Proficient in React, Python, Django, and Git.
• Experience with FastAPI, Docker, React Query, and Redux.

Responsibilities

• Co-create tools to support businesses in understanding their sustainability data.
• Build and enhance features across web apps, ensuring quality and maintainability.
• Collaborate on planning sprints and technical discussions.

Skills

React

Python

Django

Git

FastAPI

Docker

React Query

Redux

Automated testing

Data visualization

Job description

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At Envirly x Quantifier, we believe that everyone has a role to play in shaping a more sustainable future — and it all starts with access to clear, actionable data. We specialize in non-financial data analytics, helping companies monitor, report, and understand the environmental impact of their decisions.

We're building Envirly — a modern SaaS platform for ESG reporting, carbon footprint tracking, and climate analytics. Our mission is to show that smart, responsible business transformation can go hand in hand with cost optimization and operational efficiency.

At the same time, we're developing a new, innovative compliance product under the Quantifier — a fresh initiative that addresses the growing regulatory demands and naturally extends our capabilities.

We’re now looking for a Full Stack Developer to help us evolve our tools and take our products to the next level.

At Envirly x Quantifier, we believe that everyone has a role to play in shaping a more sustainable future — and it all starts with access to clear, actionable data. We specialize in non-financial data analytics, helping companies monitor, report, and understand the environmental impact of their decisions.

We're building Envirly — a modern SaaS platform for ESG reporting, carbon footprint tracking, and climate analytics. Our mission is to show that smart, responsible business transformation can go hand in hand with cost optimization and operational efficiency.

At the same time, we're developing a new, innovative compliance product under the Quantifier — a fresh initiative that addresses the growing regulatory demands and naturally extends our capabilities.

We’re now looking for a Full Stack Developer to help us evolve our tools and take our products to the next level.

What you’ll do:

• Co-create tools that support businesses in understanding and reporting their sustainability and carbon footprint data
• Build and improve key features across our web apps — from architecture to deployment
• Design, develop and maintain high-quality web UIs
• Ensure code quality, scalability, and maintainability
• Identify problems, propose solutions, and implement them end-to-end
• Collaborate on planning sprints, retros, and technical discussions
• Shape and nurture best engineering practices within the team

We’re looking for someone who:

• Has 5+ years of experience in full stack development
• Is advanced in React, Python, Django, and Git
• Has working experience with FastAPI, Docker, React Query, Redux, automated testing, and data visualization
• Bonus if you’ve worked with GitHub Actions, AWS, CDK, security, networking
• Is proactive, communicative, and enjoys solving complex problems with clean code
• Understands the full lifecycle of shipping software — from idea to deployment
• Speaks English comfortably
• Cares about sustainability and wants to build for impact

Nice to have:

• LangChain / LangGraph
• Cursor

What we offer:

• Flexible form of contract (B2B / UoP / other)
• Hybrid work setup (our office is in Warsaw)
• Benefits package (private medical care, sports card, learning budget)
• A smart, motivated team full of good ideas and great energy
• A mission that matters — and the freedom to build it with us

? Recruitment process:

• We review your application
• You complete a short Gyfted assessment (10–15 min max)
• A quick intro call to get to know each other
• A take-home task to show us how you think and build
• A call to review your task with our Head of Engineering
• A casual chat to meet the founders and align on the bigger picture

→ Then: feedback or an offer. No ghosting. No long loops. Just a process that respects your time.

Welcome aboard! ?