Senior Engineer - (Python Backend & AI)

Fulfil is a technical founder-led, bootstrapped company that is redefining how high-growth merchants operate in a complex omnichannel world. We're looking for a Senior Engineer - Python Backend & AI to join our team and work on critical systems, build and ship code, and design systems that process millions of orders.

Requirements

• 4-6 years building backend systems
• Expert Python skills — you've worked in large, mature codebases
• Deep PostgreSQL knowledge: query optimization, transactions, data integrity
• Experience with distributed systems: Celery, Redis, RabbitMQ, or similar
• Strong debugging skills across services and system boundaries
• Clear communication with both engineers and non-technical stakeholders

Benefits

• Opportunity to work on critical systems and build and ship code that processes millions of orders
• Direct relationships with merchants using your systems
• Mentoring engineers on your team
• Architecture decisions that affect millions of transactions
• System reliability and performance at scale