REQUIRED EXPERIENCE

• 8+ years in software engineering, building production systems.
• 5+ years developing security-focused tools, libraries, or platforms.
• Proven success building systems adopted by hundreds of engineers.
• Experience with fraud detection or abuse prevention at scale.
• Deep expertise in distributed systems and API design.
• Strong programming skills in Go, Python, or similar languages.

PREFERRED QUALIFICATIONS

• Background in fraud or risk engineering at scale.
• Experience with AI/ML-specific security challenges.
• Knowledge of financial security and compliance standards.
• Contributions to open-source security projects.
• Experience at consumer-facing technology companies.

ABOUT THIS ROLE

WRITER is seeking a Software Security Engineer (Embedded) to design, build, and scale the systems that protect our users, their data, and their interactions with our AI/AGI services.
At WRITER, we believe security should be seamless for our customers—baked into the platform so it’s invisible in daily use, but unyielding against abuse. This role blends deep software engineering expertise with a product mindset to deliver security tools, frameworks, and controls that serve millions of users without slowing them down.
You’ll be responsible for fraud prevention, abuse detection, identity systems, and secure-by-default development platforms that empower our engineering teams to move quickly without compromising safety. If you can turn complex security requirements into elegant, developer-friendly solutions, this is your stage.

WHAT YOU DON’T OWN (OTHERS LEAD)

• Employee identity systems (Enterprise/Corporate owns)
• Infrastructure identity (Cloud/Infrastructure owns)
• AI security research (AI Security owns)
• Infrastructure security tools (Cloud/Infrastructure owns)
• Compliance requirements (GRC owns)

Your responsibilities

• Protect customers at scale — Build fraud detection, rate limiting, abuse prevention, and LLM interaction controls (prompt injection prevention, output filtering).
• Own customer identity security — Design and implement authentication and authorization systems, protecting customer data and AI service interactions.
• Engineer security platforms — Create tools and dashboards that automate repetitive security tasks, track vulnerabilities, and enable cross-team security efficiency.
• Build reusable security frameworks — Develop secure-by-default APIs, SDKs, cryptographic libraries, and communication frameworks for company-wide use.
• Strengthen platform security — Implement multi-party authorization, secrets management, audit logging, and zero-trust networking components.
• Empower developers — Deliver self-service security tools and frameworks that integrate seamlessly with engineering workflows.
• Lead technically — Drive the architecture of security systems, mentor engineers, review designs, and influence security strategy across the organization