Senior Full-Stack Engineer

London, UK, Hybrid
8 months ago
Full time role


Pledge is the easiest way for businesses and their customers to make a positive environmental impact. We’re on a mission ...

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Job Description


Pledge is a climate infrastructure platform making it simple for businesses of every size to integrate carbon measurement & offsetting tools into their customer experience. The initial focus is set on high-emitting use cases such as logistics and transportation. The team is on a mission to make businesses climate aware and help accelerate their transition to net zero.

Pledge was founded in 2021 by early employees of Revolut and the co-founder of Freetrade. Investors include climate and b2b technology investors Visionaries Club, Lowercarbon Capital as well as the founders of and Unity.


You'll be a core team member of Pledge's engineering team and will play a defining role in the building and the quality of our products. You’ll work directly with the founders and be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.

Pledge works with B2B customers across a range of sectors including logistics, transportation and e-commerce amongst others.


  • Defining the design and creation of scalable software

  • Working as part of a cross-functional agile team including developers, product design, product management and other stakeholders in order to ideate software solutions

  • Designing and developing client-side and server-side applications

  • Designing and developing modern and secure internal and public APIs

  • Writing clean, documented and functional code

  • Testing software to ensure responsiveness and efficiency

  • Troubleshooting, debugging and upgrading software

  • Writing technical documentation

  • Working with data scientists and analysts to improve software


  • Proven experience as a full-stack developer, ideally working on B2B SaaS products and APIs

  • Working knowledge of various tools, open-source technologies and common stacks

  • Knowledge and experience of industry best practices and tools

  • Experience developing web based applications

  • Experience with the stack used at Pledge: React.JS, Node.JS, TypeScript, GraphQL, PostgreSQL, ElasticSearch, AWS

  • Experience with Git, Docker and CI/CD

  • Experience with serverless architecture, e.g. AWS Lambda

  • Worked at a large tech company or high growth startup


  • You share Pledge’s mission to enable businesses to take action on their climate impact

  • An appetite for technical and technological challenges

  • Staying abreast of developments in web applications and programming languages

  • Awareness of Development and Agile principles

  • You can work autonomously and take ownership with a high degree of integrity

  • Excellent organisational and time management skills, and the ability to work on multiple projects at the same time

  • You operate best without lots of bureaucracy

  • You approach work in a logical way and operate from first principles


  • Generous stock options - we are all owners of Pledge

  • Competitive salary

  • 25 days holiday (excl. bank holidays) increasing by 1 day each year of employment

  • Pension plan

  • Private health insurance (You’ll have full access to private online GP appointments, mental health support, and a Care Hub)

  • Cycle to work scheme

  • Regular team socials

Pledge is the easiest way for businesses and their customers to make a positive environmental impact. We’re on a mission ...

View Company Profile