Staff Backend Engineer

Tools for HumanitySan Francisco

On-site Full-time $225.5K/yr - $265K/yr

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Experience Level

Mid to Senior

Qualifications

We are seeking a skilled Staff Backend Engineer who is passionate about building robust systems and optimizing backend processes. The ideal candidate will possess the following qualifications:Proven experience in backend development, with proficiency in languages such as Python, Go, or Java. Strong understanding of microservices architecture and RESTful APIs. Experience with cloud services (AWS, Azure, or GCP) and container technologies like Docker and Kubernetes. Familiarity with database management systems, both SQL and NoSQL. Knowledge of security protocols and best practices in software development. Strong problem-solving skills and ability to work collaboratively in a fast-paced environment.

About the job

About Us:

At Tools for Humanity, we are crafting a revolutionary human network aimed at accelerating participation in the AI-driven era. As automated systems redefine the digital landscape, it's essential to establish a reliable method for verifying genuine human identity while safeguarding privacy. Our innovative products facilitate this process: the Orb authenticates real individuals, World ID ensures private verification, and World App empowers the deployment of new applications enabled by this technology. Collectively, they create a transformative layer for the AI internet.

We are among the fastest-growing networks in the tech sector, with over 17 million users verified in 160 countries and achieving more than 350,000 verifications weekly. World App is already a leading digital wallet globally, as developers integrate World ID to foster safer online environments where real people can engage, earn, and gain recognition in ways that AI cannot replicate.

Founded in 2019 and launched globally in 2023, our diverse team of over 400 professionals hails from prestigious organizations including OpenAI, Tesla, SpaceX, Apple, Google, Stripe, Meta, Coinbase, Palantir, and MIT Media Lab. Our vision is backed by prominent investors such as a16z, Khosla Ventures, Bain Capital Crypto, Blockchain Capital, Variant, Tiger Global, and Coinbase Ventures, alongside notable leaders and founders from the fintech and AI sectors.

Our journey has been featured in major publications, including the cover of TIME Magazine, recognized in Fast Company’s Next 5 in Fintech, and explored in a Bloomberg deep dive. We’ve also received accolades from The New York Times, Bankless, and TechCrunch for our advancements in identity, cryptography, AI, and global hardware deployment.

About Tools for Humanity

Tools for Humanity is at the forefront of innovation, dedicated to creating a seamless human network that enhances trust and security in the digital space. Our commitment is to empower individuals through technology, enabling them to thrive in an era defined by artificial intelligence.

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Staff Backend Engineer

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Full-time|$200K/yr - $250K/yr|On-site|San Francisco Bay Area, CA

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Feb 26, 2026

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Staff Backend Engineer

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Full-time|$225.5K/yr - $265K/yr|On-site|San Francisco

About Us: At Tools for Humanity, we are crafting a revolutionary human network aimed at accelerating participation in the AI-driven era. As automated systems redefine the digital landscape, it's essential to establish a reliable method for verifying genuine human identity while safeguarding privacy. Our innovative products facilitate this process: the Orb authenticates real individuals, World ID ensures private verification, and World App empowers the deployment of new applications enabled by this technology. Collectively, they create a transformative layer for the AI internet.We are among the fastest-growing networks in the tech sector, with over 17 million users verified in 160 countries and achieving more than 350,000 verifications weekly. World App is already a leading digital wallet globally, as developers integrate World ID to foster safer online environments where real people can engage, earn, and gain recognition in ways that AI cannot replicate.Founded in 2019 and launched globally in 2023, our diverse team of over 400 professionals hails from prestigious organizations including OpenAI, Tesla, SpaceX, Apple, Google, Stripe, Meta, Coinbase, Palantir, and MIT Media Lab. Our vision is backed by prominent investors such as a16z, Khosla Ventures, Bain Capital Crypto, Blockchain Capital, Variant, Tiger Global, and Coinbase Ventures, alongside notable leaders and founders from the fintech and AI sectors.Our journey has been featured in major publications, including the cover of TIME Magazine, recognized in Fast Company’s Next 5 in Fintech, and explored in a Bloomberg deep dive. We’ve also received accolades from The New York Times, Bankless, and TechCrunch for our advancements in identity, cryptography, AI, and global hardware deployment.

Sep 10, 2025

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Staff Software Engineer - Backend at 3Y Health | San Francisco

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Full-time|On-site|San Francisco Office

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Aug 19, 2025

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Staff Software Engineer - Backend at Sleeper | Remote-Friendly

Sleeper

Full-time|$225K/yr - $300K/yr|Remote|Las Vegas, San Francisco, Los Angeles, Seattle

Location: This position is remote-friendly, with a preference for candidates located in the San Francisco Bay Area, Los Angeles, New York City, or the Pacific Northwest.About SleeperSleeper is dedicated to uniting sports enthusiasts through engaging games and a vibrant community. As one of the fastest-growing platforms in the fantasy sports and real-money gaming sector, we are revolutionizing the way sports fans interact—whether it’s through season-long leagues, pick’em contests, or dynamic real-time experiences with friends.Our team is nimble, passionate, and focused on product excellence. We are obsessed with user experience and firmly believe that creating delightful, swift, and dependable products is the key to our growth. Supported by renowned investors in Silicon Valley, including Andreessen Horowitz and General Catalyst, we are shaping the future of sports engagement.About the RoleWe are searching for a Staff Software Engineer - Backend who will play a crucial role in scaling the foundational systems that support our fantasy sports and Daily Fantasy Sports (DFS) offerings. In this position, you will lead architectural decisions, construct essential backend services, and mentor fellow engineers as we expand to accommodate tens of millions of enthusiastic sports fans.As a senior technical leader, you will work collaboratively across teams to bring innovative features to life—from real-time contest engines and game logic to personalized content and secure, seamless payment systems. You will have the autonomy to take ownership of significant components of the backend stack and help define excellence in performance, scalability, and reliability at Sleeper.What You’ll DoDesign and develop core backend systems that drive Sleeper's games and real-time user experiences, including fantasy contests, Sleeper Picks, user profiles, leaderboards, and more.Create scalable, distributed systems that can manage millions of concurrent users with minimal latency and maximum availability.Lead backend projects from ideation to deployment, ensuring clean interfaces, thorough documentation, and resilient infrastructure.Enhance system performance and proactively identify bottlenecks through monitoring, profiling, and capacity planning.Collaborate with product, design, and frontend teams to deliver features that delight our users.Guide engineers, conduct insightful code reviews, and help develop backend engineering best practices and standards.Foster innovation, technical direction, and team culture as a vital engineering voice in leadership.Who You AreYou possess a robust background in backend development, with proficiency in relevant programming languages and frameworks.You have a strong understanding of system architecture and distributed systems.You are passionate about creating high-quality user experiences and delivering impactful features.

Sep 16, 2025

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Backend Staff Software Engineer

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Full-time|On-site|San Francisco, New York City

About FinchAt Finch, we are dedicated to transforming the employment landscape by creating the foundational systems that enhance every aspect of work. We seek innovative thinkers who approach challenges with a comprehensive mindset, driven by curiosity and a passion for executing ideas from concept to realization.As a Series B company, Finch is supported by an impressive array of investors and advisors, including General Catalyst, Menlo Ventures, and notable tech industry leaders from Plaid, Brex, and more.About Our TeamOur team is composed of dedicated problem solvers who thrive on questioning the status quo. We prioritize speed, curiosity, empathy, and diverse perspectives. Every member is enthusiastic about the impact our solutions can have on the global workforce, and we recognize the immense responsibility that comes with providing value, which is why security and privacy are our top priorities.We embrace a variety of backgrounds and skills within our team. We encourage you to apply even if your experiences don't align perfectly with the job description; your unique skills and potential are what truly matter, especially if your career path has had remarkable turns.About YouYou excel in deconstructing intricate problems to create seamless customer experiences. You possess a blend of technical acumen and interpersonal skills, characterized by a high level of empathy. You thrive in uncertain environments and can distill complex issues into actionable engineering solutions.You effectively collaborate with product, engineering, and support teams to ensure that you are delivering the optimal solution for the right challenges while keeping all stakeholders aligned. Your commitment to your customers and colleagues drives your desire for collective success.You are adaptable and ready to take action, excited by the opportunity to work on an API product that fuels some of the most impactful applications worldwide.

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Backend Staff Software Engineer

Sigma Computing

Full-time|$240K/yr - $270K/yr|On-site|San Francisco, CA

Role Overview Sigma Computing builds a high-performance platform focused on modern data architecture. The engineering team is growing, and the company is looking for experienced backend engineers who enjoy solving complex problems and building features that matter. The mission: make data accessible for every user. What You Will Do Address technical challenges that come with delivering interactive data exploration and analysis on top of data warehouses. Work with technologies such as Rust, Go, GraphQL, Node, and Kubernetes. Build backend distributed services, develop new algorithms, and create APIs to power cloud-based applications. Investigate, debug, and resolve product or system issues by identifying their underlying causes. Design and implement new software features to support a growing user base. Participate in design and code reviews with colleagues and stakeholders to uphold best practices across the technology stack. Location This position is based in San Francisco, CA.

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Staff Software Engineer - Backend Platform at Patreon | San Francisco

Patreon, Inc.

Full-time|On-site|San Francisco

Role overview Patreon is seeking a Staff Software Engineer specializing in Backend Platform for its San Francisco office. The position centers on designing and building scalable backend services that support and enhance the experience for creators using Patreon. What you will do Design and implement backend systems that can grow alongside Patreon's expanding user base Partner with engineers, product managers, and other teams to deliver reliable and user-friendly platform features Help guide technical decisions that influence the future direction of Patreon's backend architecture Collaboration This role works closely with cross-functional teams to ensure the platform addresses both technical requirements and user needs.

Apr 20, 2026

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