We're hiring a Backend Developer to join us at an exciting early stage, you'll play a key role in helping us scale as we grow our customer base. This role is ideal for someone who wants significant autonomy, broad ownership across the stack, and the opportunity to shape the technical culture and architecture from the ground up. This role is open in both our London and New York offices; tell us which you prefer when you apply. What you will do: Design and own end-to-end data pipelines, from ingestion to cleaning to transformation; Build and operate orchestration workflows (Airflow-style DAGs, etc.) to ensure reliable and observable data movement; Integrate with messy customer systems (on-prem databases, CSV dumps, SFTP, legacy ERPs) and turn them into structured, queryable data; Implement ETL/ELT pipelines (dataform) that feed our analytics layer and downstream AI models; Set standards for data quality, schema evolution, and observability; Optimize schemas, queries, and indexes for low-latency analytics at scale; Develop APIs and backend services that serve insights generated from these pipelines; Define engineering patterns around CI/CD, testing, monitoring, and deploy automation. What we look for: Highly driven and love to build and prototype; 6+ years of experience building and shipping backend services; Strong Python skills; Comfortable designing workflows and operating orchestration tools; Enjoy owning problems end-to-end in a dynamic, iterative environment; Excited to work at the forefront of LLMs; No industry knowledge required. Technical skillset — Must: Python, REST APIs, Data pipelines (custom or Airflow/etc.). Nice to have: PostgreSQL, GCP or AWS, SQLModel/Pydantic/FastAPI/Alembic/BigQuery, Terraform, Docker, GitHub Actions.