About ClearWatt
ClearWatt is on a mission to make electric vehicle ownership transparent and accessible. Our platform combines real-world data, telematics, and proprietary analytics to deliver trusted insights into EV battery health, real-world range, and performance. We partner with car dealers, leasing companies, energy companies and consumers to help them understand the true condition of electric vehicles - unlocking confidence across the EV ecosystem.
We’re scaling rapidly, building the UK’s most comprehensive EV data intelligence platform - spanning OBD diagnostics, API-based vehicle integrations, and real-time energy data streams.
The Role
We’re looking for a skilled Backend Developer with strong experience in C# and the .NET ecosystem to help us scale and evolve our core data and API infrastructure.
You’ll play a central role in designing, building, and optimising services that power our EV testing, reporting, and data-sharing products. This role is primarily backend-focused, but familiarity with modern frontend frameworks (React/React Native/Next.js) is a bonus.
Key Responsibilities
* Develop and maintain robust, high-performance .NET 8+ APIs and services.
* Work with Azure Functions, Blob Storage, Queues, and SQL/NoSQL databases to build scalable, event-driven systems.
* Design and optimise APIs that serve our mobile and web products, including partner integrations.
* Implement efficient RAG AI backend systems for introducing advanced LLM based features
* Collaborate with product managers, data engineers, and frontend developers to deliver new features end to end.
* Write clean, maintainable, and well-tested code, following modern CI/CD practices (GitHub Actions).
* Contribute to architecture discussions around performance, scalability, and data integrity.
* Help evolve our internal tools and services to support ClearWatt’s growing product suite.
What We’re Looking For
* 2+ years of professional experience with C# and .NET Core.
* Experience building REST APIs or microservices at scale.
* Familiarity with cloud-native design and Azure services.
* Understanding of async programming, dependency injection, and distributed systems.
* Strong grasp of database design and query optimisation (SQL and/or NoSQL).
* Comfortable working in a small, fast-paced team where you’ll have end-to-end ownership.
* Passion for clean architecture, performance, and testable code.
* Interest in the EV, sustainability, or data analytics space is a plus.
Nice to Have
* Experience with React / Next.js / React Native or TypeScript.
* Experience integrating third-party APIs (OEM, OBD, or telematics data).
* Familiarity with data pipelines and event-driven design.
* Understanding of CI/CD automation and GitHub Actions workflows.
What We Offer
* Competitive salary and equity options.
* Hybrid working (London-based team with flexible hours).
* Work directly with founders and management on industry-defining technology.
* Opportunity to shape the architecture of a platform at the forefront of EV intelligence.
* A culture of autonomy, purpose, and impact - your work will be shipped, seen, and used.