Agentic Product Engineer (YC-backed)

InstaAgent Company Limited; Hong Kong; On-site; HKD 900,000 - 1,500,000; Full time

Benefits offered by this job

YC-backed

Early stage

Job summary

InstaAgent Company Limited in Hong Kong seeks a hands-on builder to turn ambiguous problems into production-ready agentic products. You will design workflows, prototype, and own outcomes from zero to production.

You'll architect agentic systems, work with founders and engineers, and move fast in a small team with high trust. Fluency with AI development, tools, and modern coding environments is essential.

Qualifications

• Hands-on experience building agentic workflows or AI-native products.
• Strong understanding of APIs, databases, backend systems, asynchronous workflows.

Responsibilities

• Design and ship agentic products end-to-end.
• Architect agentic systems including agents, tools, memory, and orchestration.
• Get hands-on and prototype using code, APIs, AI coding tools, and automation platforms.
• Improve agent reliability by identifying failure modes and building evaluations.
• Own product outcomes by prioritizing and shipping features that drive impact.

Job description

We're not looking for someone to manage a backlog. We're looking for a builder — someone who can take an ambiguous problem, design an agentic solution, get hands‑on to build it, and own the outcome from zero to production.

You should be equally comfortable thinking through the product experience, designing an agentic workflow and system architecture, and opening up your IDE to prototype it yourself.

If you've built AI agents, automated complex workflows, or started something from scratch before — even if it didn't work out — we want to hear from you.

What you'll own

Design and ship agentic products end-to-end — from problem definition and workflow design to prototyping, production, and iteration

Architect agentic systems — agents, tools, context, memory, state, orchestration, human-in-the-loop, and failure handling

Get hands‑on and build — use code, APIs, AI coding tools, and automation platforms to rapidly prototype and validate ideas

Improve agent reliability — identify failure modes, build evaluations, and optimize for quality, latency, and cost

Own product outcomes — work directly with founders and engineers to prioritize and ship what drives customer and business impact

What we're looking for

Hands‑on experience building agentic workflows or AI-native products — not just defining requirements for them

Strong technical foundation — you understand APIs, databases, backend systems, asynchronous workflows, and system architecture

You can build — you don't need to be a career software engineer, but you should be able to prototype real working systems yourself

Fluent with modern AI development — context engineering, tool/function calling, agent orchestration, memory, retrieval, evaluations, and observability

Fluent with AI coding tools — Claude Code, OpenAI Codex, Cursor, and similar tools

Strong systems and product thinking — you understand both how the system should work and why it should exist

High agency and ownership — you investigate, make decisions, build, ship, measure, and iterate

We care much more about what you've actually built and how you think than whether your previous title was Product Manager, Engineer, or Founder.

Why InstaAgent

YC-backed, early stage — what you build ships and matters immediately

Agentic workflows are core to the product, not an AI feature bolted on top

Small team, high trust, direct access to founders

Real ownership over product direction, architecture, and execution

Fast-moving, low-bureaucracy environment where good ideas can go from conversation to production quickly