Senior AI Product Engineer
Harnham
Role Title: Senior AI Product Engineer / Senior AI Product Engineer II
Location: Bay Area (Hybrid – minimum 3 days onsite)
The Opportunity
We’re partnering with a high-growth technology company building the next generation of intelligent, autonomous systems to transform how complex business workflows are executed.
This is a rare opportunity to join at a true inflection point. The organization is moving beyond assistive AI into fully agentic systems — software that can take action, complete workflows, and deliver outcomes end-to-end with minimal user intervention.
As a Senior AI Product Engineer, you’ll play a critical role in building these systems from the ground up. You’ll work on production-grade AI products that directly impact customers, owning everything from architecture through deployment and iteration.
If you’re excited by 0→1 challenges, high ownership, and building AI that actually works in the real world, this role is for you.
Why You Should Work Here
- Real AI impact: Build and ship production, customer-facing agentic systems — not prototypes or internal tools
- True ownership: Drive end-to-end development of AI products from concept through scale
- 0→1 environment: Help define foundational systems at a pivotal stage of growth
- High-trust culture: Work in a team that values autonomy, curiosity, and accountability
- Small, high-impact teams: Your work directly shapes product direction and user experience
- Meaningful technical challenges: Solve real-world problems in autonomy, orchestration, evaluation, and reliability
- Strategic influence: Contribute to the architecture and direction of AI across the platform
The Role
This is a deeply technical, engineering-first role focused on building agentic AI systems within a live product environment .
You’ll operate within a small, focused team owning a specific domain, partnering closely with product while maintaining full engineering responsibility. This is not incremental feature work — it’s building the systems that will define how users interact with the product going forward.
Expect to spend the majority of your time coding and designing systems, with a strong emphasis on delivering scalable, production-ready solutions.
What You’ll Own
- End-to-end development of agentic AI systems, from concept to production
- System design and architecture for scalable, autonomous workflows
- Prompt engineering, orchestration, and agent behavior design
- Evaluation frameworks to measure performance, reliability, and accuracy
- Continuous iteration loops: diagnosing issues and improving system outcomes
- Shared platform components enabling consistent AI capabilities across products
- Collaboration across teams to ensure seamless, unified user experiences
What We’re Looking For
Must-Haves:
- Proven experience building and deploying production-level, customer-facing agentic AI systems
- Deep understanding of the full agent lifecycle : prompting, orchestration, evaluation, debugging, and iteration
- Strong software engineering foundation (backend or full-stack) with hands-on AI development
- Proficiency in Python or TypeScript
- Experience running structured evaluations and improving systems based on results
- Clear ownership mindset — able to articulate what you built, why you built it, and how you improved it
- Ability to think from a user perspective and design solutions accordingly
Experience Guidelines:
- Senior AI Product Engineer: 4–6 years
- Senior AI Product Engineer II: 6–8 years
Nice-to-Haves:
- Experience with retrieval-augmented generation (RAG)
- Familiarity with agent frameworks or orchestration tools (e.g., LangChain, Bedrock, or similar)
- Background in fast-paced, high-growth environments
The Stack
Python · TypeScript · LLMs · Agent Frameworks · Retrieval Systems (RAG) · Cloud AI Platforms · Distributed Systems · Evaluation & Observability Tooling
$166.7k - $259.8k
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