python developer for AI cybersecurity products

Referment is partnering with a venture-backed AI startup building AI-powered cybersecurity products.

• Own products end-to-end, from customer problem through to production;
• Design complex backend architecture and systems;
• Ship React interfaces;
• Build internal developer tools and agentic consoles;
• Improve databases and handle systems programming;
• Debug production systems and deploy continuously;
• Help shape the product and engineering culture.

• Deep technical focus on hard engineering and complex backend architecture;
• Strong Python backend fundamentals with high-level application of tools like FastAPI, Django, or Flask;
• Senior-level technical sophistication beyond routine maintenance tasks;
• Verifiable track record of technical contributions and honest project claims;
• React experience or willingness to work across the frontend;
• Startup mentality with genuine product ownership;
• Around 3-6 years' experience with a focus on engineering depth;
• Not suitable for candidates focused primarily on product management or innovation titles rather than hands-on engineering;
• Not suitable for candidates who consider routine infrastructure maintenance their core focus;
• Not suitable for candidates who need detailed specifications before starting work;
• Not suitable for candidates who only enjoy one part of the stack;
• Not suitable for candidates who avoid production responsibility;
• Not suitable for candidates seeking a comfortable corporate engineering role;
• Not suitable for candidates currently splitting their attention with another startup;
• Nice to have: Founding or leadership roles, internal developer tools, DSLs or compilers, Go, C or Rust, cybersecurity, workflow orchestration with Prefect or Airflow, high-growth SaaS.

• Competitive salary;
• Meaningful equity;
• One of the first engineering hires;
• Direct access to the founders;
• Huge ownership from day one;
• Build products that customers actually use.