Senior Software Engineer, Backend - World ID

This opportunity is with Tools for Humanity.

About the Team

World ID is a digital identity system and proof of humanity for everyone, designed to be a foundational identity protocol for the internet in the era of AGI. It is built to be self-custodial, secure, decentralized, and open, setting new standards for privacy and transparency.

At the heart of World ID are groundbreaking innovations in hardware and software—spanning distributed systems, cryptography, sensors, biometrics, machine learning and blockchain technology.

As part of the team behind World ID, you’ll work on defining and building its core systems, user experiences, and developer integrations. You'll help shape the future of technologies needed to realize this ambitious vision.

This role is based in San Francisco, CA. We are in the office 5 days a week with circumstantial flexibility and offer relocation assistance to new employees.

About the Opportunity

• Expand: Drive the growth of World ID enrollment by introducing new verification methods, enhancing existing ones, simplifying enrollment, and enabling seamless account management to reduce churn.
• Engage: Support real-world use cases by developing SDKs, cloud integrations, and privacy-preserving solutions for securely attesting personal information.
• Excel: Build core technologies and infrastructure to optimize security, privacy, compliance, reliability, and development velocity for World ID.
• Extend: Advance an open and decentralized World ID platform for empowering third-party developers to integrate World ID without relying on proprietary technologies and single points of failure.

As a Software Engineer on the World ID team, you’ll take ownership of key software components—designing, building, debugging, scaling and maintaining them to meet high standards and team objectives. You'll work closely with product managers, designers, engineers, and other stakeholders to deliver impactful solutions.

About You

• You have experience designing and developing backend systems.
• You have a proven track record of building exceptional software, solving complex problems, and delivering elegant, effective solutions.
• Colleagues consistently vouch for your ability to collaborate, prioritize, and stay organized in ambiguous and fast-changing environments.
• You have a knack for identifying the most important tasks, relentlessly focusing on them, and driving them to completion.
• You’re a fast learner, able to master and apply new knowledge and skills with ease.
• You communicate clearly, concisely, and effectively—both in writing and in speech.
• You want to be great at building software.

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

Pay transparency statement (for CA based roles):

The reasonably estimated salary for this role at TFH ranges from $216,000 - $240,000, 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!