Senior Backend Engineer (Python)
BestowFull Time
Senior (5 to 8 years)
Candidates should have 4+ years of backend engineering experience with a strong focus on Python, proficiency in developing RESTful APIs and integrating with external services, and solid experience with PostgreSQL, Docker, and cloud platforms, preferably GCP. Familiarity with distributed systems, background processing like Celery, and message queues like PubSub is expected, along with experience in early-stage startups and a product-minded approach. A passion for climate solutions and sustainability, plus the ability to work in the London office 3 days per week, are also required.
The Senior Python Engineer will design and implement robust, scalable backend services using Python, preferably with FastAPI, and build and maintain core APIs for customer workflows and third-party integrations. They will work with data engineering to ingest, transform, and expose environmental and operational datasets, ensuring high system reliability and performance through testable and maintainable code. Responsibilities also include collaborating with product and design teams, implementing best practices for code quality, CI/CD, observability, and infrastructure-as-code, and participating in technical architecture discussions.
Provides carbon tracking solutions for businesses
CarbonChain provides carbon tracking solutions that help businesses measure and reduce their greenhouse gas emissions. Their main product is a carbon tracker that allows organizations to analyze the impact of their activities and pinpoint areas that produce the most carbon emissions. This tool is especially useful for companies that need to comply with carbon border adjustment mechanisms (CBAM), which are regulations that impose tariffs on imported goods based on their carbon footprint. CarbonChain offers accurate global data on greenhouse gases like CO2 and methane, assisting businesses in meeting international carbon regulations and finding suppliers with lower carbon emissions. The company operates on a subscription model, charging recurring fees for access to its platform and data services, and also provides consulting to help clients improve their carbon reduction strategies.