Company: Jack & Jill
Location: London
Job Description:
Job Title
Backend Engineer
Salary
£40,000
Company Description
London-based software studio and research lab building proprietary legal-tech and production systems
Job Description
As the first backend hire at this high‑standard software studio, you will own the technical architecture and production health of revenue‑critical systems. Working directly with the founder, you will build and operate Python (FastAPI) services, ensuring reliability and correctness are prioritised over shipping speed in a production‑first environment.
Location
London, UK
Why this role is remarkable
- Rare opportunity to be the first backend hire, gaining total technical autonomy and direct collaboration with the founder on core product decisions.
- Join a studio that values engineering integrity and “correctness before scale,” moving away from high‑velocity ticket culture to deep operational ownership.
- Diverse impact across proprietary research software for the legal sector and stabilising critical external systems where your code directly affects revenue.
What You Will Do
- Design, develop, and maintain robust APIs using Python (FastAPI), Postgres, and Redis for production environments.
- Take full responsibility for the deployment and operational health of services, ensuring high reliability under real‑world loads.
- Architect and implement system improvements, including transitioning to event‑driven architectures and optimising infrastructure on AWS/Kubernetes.
The ideal candidate
- Has 4+ years of experience building and operating production‑grade services with a strong command of Python and SQL (Postgres).
- Demonstrates a history of technical ownership, having successfully managed scaling or reliability projects from development through to production.
- Proficient with modern infrastructure tools such as AWS, Docker, or Kubernetes and understands the trade‑offs of designing maintainable, explicit systems.
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Posted: May 17th, 2026