Senior Fullstack Engineer (AI team)

SWEEP
London

Sweep is hiring a Senior Full Stack Engineer to work on AI-powered product features within our enterprise climate programme software.

Climate change is the defining issue of our time. By empowering companies with technology that helps them manage their climate impact, we believe Sweep can make a meaningful contribution to a better future for all of us.

Ok, sounds promising. What will I be doing?

As part of the engineering team, you will work on building our SaaS tool that allows companies to measure and track their greenhouse gas emissions, set reduction goals and report on progress towards a cleaner future. You will also work on the Sweep marketplace that allows companies to make contributions to cutting edge climate solutions.

To be more specific, this includes:

1. Develop and own features of the core product 🌱

  • Participate in every stage of the development life-cycle from design to implementation, testing, rollout and making everything run smoothly in production

  • Contribute to our technical architecture as we grow

  • Implement end-to-end features from data models to back-end development and UI development

  • Identify technical problems and develop software updates and fixes

  • Design, build and operate AI agent systems and AI-powered product features embedded directly in the product, with a strong focus on scalability, reliability, monitoring and real-world usage

2. Be a team citizen 👫

  • Participate actively in the team meetings (standup, planning, etc)

  • Review and comment pull requests and code changes

  • Lead technical design of significant features

  • Raise the bar for technical standards, performance, reliability, and operational excellence

  • Collaborate within the AI team to shape how AI features are designed, integrated and operated in production

  • Help bring AI prototypes to production-grade quality and long-term maintainability

3. Maintain and operate our infrastructure ⚙️

  • Build and set up new development tools and infrastructure

  • Automate and improve development and release processes

  • Ensure that systems are safe and secure against cybersecurity threats

  • Operate and improve the reliability of AI agent systems, including evaluation, monitoring and performance

4. Pursue quality 🔍

  • Be a quality gatekeeper

  • Improve processes and methodology to reach highest standards of quality

  • Apply the same quality and reliability standards to AI-powered features as to any other part of the product

That's just right for me. What do I need to bring?

Good you asked. Some more details on who we’re looking for

Qualifications 🏆

  • You have 5+ years of experience as a software developer in either frontend or backend development

  • Deep knowledge of high level programming language like Python, Ruby, Scala, JS

  • Can demonstrate that your work had significant impact on product

  • Capable of delivering on multiple competing priorities

  • Experience as a technical leader of a team

  • Experience working on AI-driven products (e.g. assistants, agents, automation or decision systems) in production environments is a strong plus

Qualities 🧠

  • You have a passion for solving problems, developing the solutions and building products

  • You are enthusiastic, self motivated and autonomous

  • You value qualitative software and clean code

  • You bring all-round communication skills and an ability to work collaboratively

  • You are a team player and aim for velocity

  • You care about our mission of creating a better future for all of us

  • You have hands-on experience with AI-powered systems and enjoy working at the intersection of product, software engineering and applied AI

Great, and what's in it for me?

By joining Sweep, you'll be part of an exciting startup with a vision to change the world. We're ready to hit the ground running, and joining us at this early stage allows you the unique opportunity to help shape our journey.

Our flexible work model allows you to balance personal and professional commitments while staying connected with your global colleagues. Even though our hubs are in France, the UK and the US, we're committed to fostering a connected and engaged remote work culture.

As a B Corporation, we're dedicated to creating successful businesses that benefit everyone, including society and the planet.

Ready for the most exciting chapter of your career? Come join us on this extraordinary ride!

Posted 2026-02-25

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