Lead Full-Stack Developer

2 Months ago • All levels
Full Stack Development

Job Description

GT, founded in 2019, connects top talent with high-growth companies. On behalf of Rio ESG, a British sustainability-focused software platform, GT is seeking a Lead Full-stack Engineer. Rio ESG helps organizations track sustainability data, report on ESG, and manage policies for clients like NHS Scotland. Their product, Rio, is an intelligent sustainability management system with an AI engine. The Lead Developer will guide the tech team, own technical decisions, and lead feature delivery across a modern stack, scaling the platform's reporting, automation, and intelligence tools.
Good To Have:
  • Worked on platforms handling large-scale data or integrating AI/ML to improve user and operational outcomes.
  • AI-driven coding first and are experimenting with tools such as Claude code, Cursor, etc, to improve output and automate parts of your development process.
Must Have:
  • Lead engineering across our full-stack TypeScript platform (React, Node.js, GraphQL, MySQL, Redshift)
  • Mentor engineers and drive clean, scalable architecture
  • Collaborate with product, design, and data teams to deliver high-impact features and dashboards
  • Oversee ETL processes and integration with BI tools (like QuickSight)
  • Help expand our AI capabilities for smarter data handling, insight surfacing, and automation
Perks:
  • Health insurance.
  • Psychotherapy coverage.
  • Sport coverage.
  • Learning budget.
  • Paid vacations
  • Paid sick leave.
  • All public holidays are paid days off.

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GT was founded in 2019 by a former Apple, Nest, and Google executive. GT’s mission is to connect the world’s best talent with product careers offered by high-growth companies in the UK, USA, Canada, Germany, and the Netherlands.

On behalf of Rio ESG, GT is looking for a Full-stack Engineer passionate about sustainability 🌱 and AI 💻

About the Company

Rio ESG is a British sustainability-focused software platform that combines software, consultancy, education tools, and other features to improve their clients’ sustainability performance.

Since 2018, Rio ESG has been helping various industries including investment managers, corporates, financial services, and public sector organizations track sustainability data, report on ESG, manage policies, and learn how to become more sustainable.

Most of their clients are medium and large organizations in the UK, including NHS Scotland, Ministry of Justice, JD Sports & big international investment banks like Sanne Group.

🎯 Rio's Mission: "We believe sustainability is for everyone, and we’re on a mission to make it more accessible."

About the Product

Rio is an intelligent sustainability management system consisting of three main parts: ESG Data Tracking & Reporting, Governance & Education. It also includes Rio AI - a proprietary AI engine that utilizes patented methodology to map expert knowledge, employing a transparent model to analyze sustainability data and deliver tailored recommendations to users through a user-friendly chatbot interface.

About the Role

Rio is looking for a hands-on Lead Developer to guide their fast-moving tech team and shape the future of their sustainability platform. You’ll own critical technical decisions, lead feature delivery across a modern stack, and help them scale as they build out the next generation of reporting, automation, and intelligence tools.

Responsibilities:

  • Lead engineering across our full-stack TypeScript platform (React, Node.js, GraphQL, MySQL, Redshift)
  • Mentor engineers and drive clean, scalable architecture
  • Collaborate with product, design, and data teams to deliver high-impact features and dashboards
  • Oversee ETL processes and integration with BI tools (like QuickSight)
  • Help expand our AI capabilities for smarter data handling, insight surfacing, and automation

Essential knowledge, skills & experience:

  • Strong experience with TypeScript, React, Node.js
  • Solid backend and database knowledge (MySQL, Redshift)
  • Comfort navigating cloud infrastructure (AWS)
  • Familiarity with GraphQL, ETL pipelines, and BI/reporting tools
  • Leadership experience or readiness to step into a team lead role

Nice-to-have

Bonus if you’ve worked on platforms handling large-scale data or integrating AI/ML to improve user and operational outcomes. You are AI-driven coding first and are experimenting with tools such as Claude code, Cursor, etc, to improve output and automate parts of your development process.

Interview Steps

1. GT interview with Recruiter

2. Initial interview

3. Technical interview

4. Final interview

5. Reference Check

6. Offer

We go beyond usual perks… By working with us, you will get:

  • Health insurance.
  • Psychotherapy coverage.
  • Sport coverage.
  • Learning budget.
  • Paid vacations
  • Paid sick leave.
  • All public holidays are paid days off.

GT working model:

You will work directly with a client through our Extended Team model. We try to do things differently and put our efforts into integrating you as deeply as possible into the client’s team. You work with the same tools and technologies as they do and are managed directly by the client without any intermediary in between. We help you build relationships and create an environment where you genuinely feel like a member of the client’s team. We also encourage trips to a client and join teambuilding and after-work activities. Our Extended Team model is focused on long-term projects that last over several years.

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