Backend Engineer
Harnham
Overview
In this role you will design and build robust Python-based backend services for a stealth-mode GPU trading platform. You will collaborate with the founding team to shape core systems and technical direction in a high-impact environment. You’ll work with PostgreSQL to ensure data integrity and performance while integrating ClaudeCode to streamline development. Occasional front-end support via TypeScript and a strong focus on API design, security, and quality will be part of your daily work.
Responsibilities- Design and develop backend services in Python using FastAPI, Flask, or Django
- Work with PostgreSQL for data management and optimized queries
- Integrate ClaudeCode for coding assistance and automation
- Collaborate with cross-functional teams on API design, security, and performance
- Contribute to code reviews, documentation, and continuous improvement initiatives
- Bridge backend work with occasional UI enhancements using TypeScript
- Solid backend Python experience from reputable companies
- Experience with one or more Python frameworks (FastAPI, Flask, Django)
- Proficiency with PostgreSQL and query optimization
- Familiarity with ClaudeCode integration or similar tooling
- Basic TypeScript knowledge for UI bridging
- Strong collaboration and impact-driven mindset
- collaboration
- adaptability
- execution
- Python backend development
- PostgreSQL database design and optimization
- API design and security best practices
Reference: WJ-747_31225901 · Posted 04 Nov 2026, 10:39 PM