Senior Product Security Engineer

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About the Company
World is a network of real humans built on privacy-preserving proof-of-human technology, powered by a globally inclusive financial network that enables the free flow of digital assets for all. It is built to connect, empower, and be owned by everyone.

About the Team

The Security team at Tools for Humanity operates at a level far beyond a regular company. Our objective is not just to secure an organization, but to build the trusted, foundational infrastructure for the world's largest identity and financial network. We are a team of over 15 seasoned engineers who are central to the success of the World protocol, tackling state‑of‑the‑art hardware security, advanced cryptography—including new zero‑knowledge proofs—and the security of a global, distributed cloud and mobile ecosystem.

About the Opportunity

As a Product Security Engineer, you will be a hands‑on technical leader responsible for safeguarding the products and services that power the World project. You will proactively embed security into every stage of the development lifecycle, solve novel security challenges at a global scale, and directly protect our users and the integrity of a protocol designed for the majority of humanity.

Responsibilities

• Lead secure architecture reviews and threat modeling sessions for new application and cloud services.
• Engineer and implement automated security guardrails and reusable libraries to make the secure path the easy path for developers.
• Perform deep‑drop, security‑focused code and infrastructure reviews in languages like Rust, Go, and Python.
• Own the vulnerability management process, from triaging bug bounty submissions to driving remediation efforts with engineering teams.
• Mature and scale our Secure SDLC and bug bounty programs to keep pace with a rapidly growing engineering organization.

Qualifications

• 6+ years of hands‑on experience in Product Security, Application Security, or Cloud Security.
• Proficiency in code review and development in languages like Rust, Go, and Python.
• Extensive experience securing modern AWS architectures and developing secure infrastructure‑as‑code (e.g., Terraform and CDK).
• Expertise in leading threat modeling sessions and providing actionable guidance to engineering teams.
• Experience implementing and managing security tooling (SAST, DAST, SCA) and embedding security into CI/CD pipelines.
• Deep understanding of web and API security principles (OWASP Top 10) and experience securing distributed, mobile‑first systems.
• Nice to have: Experience scaling a security champions program, expertise in Kubernetes (EKS) and container security or a particular interest in securing mobile applications or smart contracts.

What we offer

Pay transparency statement:
​The reasonably estimated salary for this role at TFH ranges from €146,000 - €172,000, plus a competitive long‑term incentive package. Actual compensation is based on factors such as the candidate's skills, qualifications, and experience. In addition, TFH offers a wide range of best‑in‑class, comprehensive, and inclusive employee benefits for this role including healthcare, dental, vision, a 401(k) plan and match, life insurance, flexible time off, commuter benefits, professional development stipend and much more!

By submitting your application, you consent to the processing and internal sharing of your CV within the company, in compliance with the GDPR.

If you don't think you meet all of the criteria but are still interested in the job, please apply. Nobody checks every box, and we're looking for someone excited to join the team.

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