Software Engineer, Agentic Infrastructure

About Handshake

Handshake is the career network for the AI economy. 20 million knowledge workers, 1,600 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 world's 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, you'll 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 Handshake's platform

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

• Establish engineering standards for agentic development across Handshake's 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:

• 2-4 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

Compensation

• $152K – $208K

For cash compensation, we set standard ranges for all U.S.-based roles based on function, level, and geographic location, benchmarked against similar stage growth companies. In order to be compliant with local legislation, as well as to provide greater transparency to candidates, we share salary ranges on all job postings regardless of desired hiring location. Final offer amounts are determined by multiple factors, including geographic location as well as candidate experience and expertise, and may vary from the amounts listed above.

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: $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