Freelance Web Developer
Open Systems LabCambridgeshire, United Kingdom
About the role
Open Systems Lab is a non-profit R&D lab bringing together designers, researchers, technologists, engineers, lawyers, government workers, and domain experts to solve difficult problems and build new operating systems for society. We collaborate with organisations from every sector to design and deploy open source tools and infrastructures that allow citizens, communities, governments, and businesses to operate in radically new ways, and so meet the big social, economic, and environmental challenges of our time.
We’re especially focused on addressing challenges related to the built environment - from reimagining homeownership and transforming the planning system to designing and delivering zero-carbon building technologies that are accessible to all.
As we scale, we're looking for experienced freelance web developers to join our team and bring deep expertise to the OSL project portfolio.
You will enjoy this work if you are a:
OSL is a fully remote team of specialists who are comfortable operating independently and assuming a high level of autonomy from day one. For this reason, we're looking for people who have ample experience working within remote software teams using GitHub and async project management tools. At this time, we're not able to support junior developers or those new to working on software teams.
- Natural doer-deliverer, who can work in an agile way, weigh up priorities and make good judgements, balancing short term delivery against long-term vision and future-proofing.
- Fast learner who knows how to ask for feedback, take it on board, and turn it into meaningful improvements.
- Collaborative interdisciplinary problem-solver who can confidently and consistently see through solutions with minimal external management.
OSL is a fully remote team of specialists who are comfortable operating independently and assuming a high level of autonomy from day one. For this reason, we're looking for people who have ample experience working within remote software teams using GitHub and async project management tools. At this time, we're not able to support junior developers or those new to working on software teams.
What we're looking for
We’re eager to connect if you are experienced in any of the following problem spaces:
- Optimising strategies for data fetching, caching, and routing in React TypeScript apps. Migrating a mix of Apollo GraphQL, SWR, Axios requests and others to a more focused, opinionated framework to improve testing, scalability, and overall app performance.
- Building performant, collaborative, low-code editors which utilise JSON Operational Transforms (OT) or Conflict-free Replicated Data Type (CRDT) data structures. Implementing role-based permission models across multiple layers of an application stack.
- Integrating with both new and legacy systems like payment processing APIs and document management systems, and contributing to the development of open data standards that support interoperability, especially of planning application data and policies. Thinking about how AI may be applied to these challenges while still prioritising design principles like auditability.
- Designing and building web-based tools for 3D modeling of the built environment using ThreeJS, React Three Fiber, Mapbox or similar. Automating pipelines for processing spatial data formats such as Industry Foundation Classes (IFC) using tools like Rhino, Grasshopper, and Speckle.
- Fine-tuning PostgreSQL databases and managing infrastructure-as-code using tools like Pulumi and AWS. Configuring Github Actions, CI pipelines, and error monitoring to help small developer teams work smarter.
View all remote jobs at Open Systems Lab →
FAQ
- Is the Freelance Web Developer position at Open Systems Lab remote?
- Yes. This role was posted on Remote Frontend Jobs, a job board that lists exclusively fully remote positions.
- When was this Freelance Web Developer job posted?
- This listing was posted on July 7, 2025 and is still open for applications.
- How do I apply for the Freelance Web Developer position at Open Systems Lab?
- Use the apply button on this page — it takes you directly to the employer’s application page.
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