Job Description

Return is hiring a BESS Optimization Developer (Python) to build the software powering our BESS optimization algorithms. You will join the Optimizer Quant team, which designs algorithms that decide when and how our batteries charge and discharge. The platform automates energy storage, market optimization, sales, project management, procurement, and construction. Requirements: strong Python; comfortable with APIs and backend fundamentals, cloud, Docker, and basic DevOps; ability to reason about system design and build/operate reliable data pipelines; working understanding of optimization, time-series and forecasting, and the statistics behind quant work. Finance background not required, but collaboration with quants is essential. Tech stack: Python, PostgreSQL, TigerData, dbt, Dagster, Grafana, Terraform, self-hosted + cloud compute. We minimize meetings to provide at least five hours of uninterrupted coding time per day; code reviews and automated/manual testing; deployments multiple times per day. The team includes experienced founders familiar with remote development since 2008; there is no recruiter involved in the process. Apply at https://jobs.polymer.co/return/40229