You will build and maintain backend services, shared platform capabilities, and developer tooling that support HAI and internal AI initiatives. The work centers on core backend platform concerns—service architecture, APIs, data systems, performance, reliability, and developer experience—in an area making increasing use of LLMs and agents.
We are looking for someone who combines strong backend fundamentals with practical knowledge of LLM-powered and agentic systems.
This is a backend platform role supporting HAI and internal AI initiatives. The strongest candidates will bring TypeScript and Next.js depth alongside experience in backend architecture, databases, and performance, plus enough practical AI knowledge to contribute directly to this work. Success does not require expertise in every model or framework, but it does require the ability to design and operate the systems around AI-powered product experiences.
Handshake delivers benefits that help you feel supported — and thrive at work and in life.
The below benefits are for full-time US employees.
🎯 Ownership: Equity in a fast-growing company
💰 Financial Wellness: 401(k) match, competitive compensation, financial coaching
🍼 Family Support: Paid parental leave, fertility benefits, parental coaching
💝 Wellbeing: Medical, dental, & vision, mental health support, $500 wellness stipend
📚 Growth: $2,000 learning stipend, ongoing development
💻 Remote & Office: Internet, commuting, & free lunch/gym in our SF office
🏝 Time Off: Flexible PTO, 15 holidays + 2 flex days
🤝 Connection: Team outings & referral bonuses
Explore our mission, values, & comprehensive US benefits at joinhandshake.com/careers http://joinhandshake.com/careers.
Handshake was founded on a simple belief that everyone deserves a path to a great career, regardless of where they went to school or who they know. Today, we power 25 million job seekers, 1 million+ employers, and 1,600 educational institutions.
In 2025, we started Handshake AI and built the fastest-growing AI data business in history. We work directly with frontier AI lab researchers to create evaluations, publish benchmarks, and push the boundary of data. We’ve grown from $0 to ~$1B run rate and pay ~$60M to over 30K individuals every month.
Human data is the core infrastructure to AI advancement. Frontier AI labs currently improve model capabilities with various data-intensive post-training techniques. We believe that data spend for AI training will increase by 3-5x in the next few years and continue for much longer as models take on new domains. Handshake AI supports all of the frontier AI labs, working on their most complex data at the largest scale.
Hatch ITMetro, DC
Pay not posted
Posted Jun 15, 2026
Hire HangarUkraine +16
$3K–$4K / mo
Posted Oct 6, 2026
FreehandUnited States
$150K–$300K / yr
Posted Aug 27, 2026
$160K–$300K / yr
Posted May 21, 2026
EigenSan Francisco
Pay not posted
Posted May 28, 2026
Hinge HealthSan Francisco-HQ
$188K–$257K / yr
Posted 15 days ago
Source: the Handshake Ashby job board. We last checked this job 46 min ago. We first saw it 4 days ago. A job on a job board does not always mean that the team interviews people now. We found this job board in a public list. We did not yet compare it with the careers page of the company.
Funding records can have errors and can be missing. The company page has the links.
This base pay is above the median for senior infrastructure, platform and SRE jobs in the Bay Area.
We compare the middle of each posted range. This is base pay as posted. The group does not include this job.