Senior Software Engineer, AI Infrastructure

About Handshake

Handshake is the career network for the AI economy. 20 million knowledge workers 1600 educational institutions 1 million employers (including 100% of the Fortune 50) and every foundational AI lab trust Handshake to power career discovery hiring and upskilling from freelance AI training gigs to first internships to full-time careers and beyond. This unique value is leading to unparalleled growth; in 2025 we tripled our ARR at scale.

Why join Handshake now:

• Shape how every career evolves in the AI economy at global scale with impact your friends family & peers can see & feel

• Work hand-in-hand with world-class AI labs Fortune 500 partners & the worlds top educational institutions

• Join a team with leadership from Scale AI Meta xAI Notion Coinbase & Palantir among others

• Build a massive fast-growing business with billions in revenue

The Role

Handshake is building the infrastructure layer that powers the next generation of AI agents across our platform. As a Senior Software Engineer on our Agentic Infrastructure team youll be at forefront of AI at Handshake will architect & build the foundational systems that allow AI agents to plan execute & operate autonomously at scale. This is a rare greenfield opportunity to define how an AI-first company builds for the agentic era at the intersection of infrastructure AI & direct product impact.

• Architect & build the core agent orchestration layer including tool use memory & multi-step reasoning systems that powers AI-driven features for 20M users & 1M employers across Handshakes platform

• Design evaluation observability & reliability frameworks that ensure agent behavior is safe auditable & production-ready at scale

• Establish engineering standards for agentic development across Handshakes platform teams enabling every engineer to build with AI

• Partner with ML product & platform engineers to ship agent-powered features from infrastructure to production at Olympic pace

You Have

Must-Haves:

• 4-7 years of backend engineering experience with strong proficiency in NodeJS Typescript &/or Python

• Experience designing & operating distributed systems at significant scale for developer experience

• Hands-on experience building with LLM orchestration frameworks (LangChain LlamaIndex or similar)

• Deep understanding of agent architectures: tool use multi-step reasoning memory management & evaluation

• Experience with cloud infrastructure (AWS GCP or Azure) & infrastructure-as-code tools like Terraform

• Experience with Node JavaScript CICD Docker

• A track record of shipping production systems with high reliability low latency & strong observability

• Strong communication skills & ability to drive alignment across engineering & cross-functional partners

Bonus Points:

• Open-source contributions to LLM or agent frameworks

• Prior experience at an AI-native company or on a dedicated AI platform team

We Offer

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: $2000 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 Experience:

Senior IC