Founding Engineer: Build Scalable AI Agent Systems

TechTree; Warszawa; On-site; PLN 372,000 - 447,000; Full time

Benefits offered by this job

Competitive cash compensation

Equity 1%-2%

Paid lunches / gym passes

Job summary

TechTree in Warsaw is seeking a Founding Engineer to shape the core products and infrastructure for agentic AI. You’ll own critical systems and work on hard problems with full ownership and minimal approvals.

You will scale AI agents, build a state‑of‑the‑art agentic UX, and create benchmarks and evals at token scale while partnering with founding teams. The role combines cutting‑edge tech with rapid iteration and equity‑backed growth opportunities.

Qualifications

• Fluency in Polish and English.
• Shipped agents to production at scale.
• Speed over process with decisive execution and minimal guidance.
• True ownership culture and bias for action.

Responsibilities

• Scale infrastructure for AI agents to run reliably at scale.
• Build state-of-the-art agentic UX.
• Create observability, benchmarks, and evals at token scale.
• Ensure every token delivers maximum value at minimum cost.
• Build and maintain integrations with third‑party platforms and tools.

Skills

Polish

English

Shipped agents to production

Ownership mindset

Tools

TypeScript

Cloud infrastructure

AI tooling

Job description

TechTree in Warsaw is seeking a Founding Engineer to shape the core products and infrastructure for agentic AI. You’ll own critical systems and work on hard problems with full ownership and minimal approvals.

You will scale AI agents, build a state‑of‑the‑art agentic UX, and create benchmarks and evals at token scale while partnering with founding teams. The role combines cutting‑edge tech with rapid iteration and equity‑backed growth opportunities.