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AI Builder

everfieldPoland- Warsaw | RemoteEverfield HQ
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Senior · 3+ yrs
Posted
9 Sept 2026
Status
Open · checked 7d ago

About this role

Poland- Warsaw or Remote is the location for this AI Builder position at Everfield, which suits an experienced, hands-on engineer with startup experience looking to ship agent-first software. The role acts as the technical counterpart to the Product Lead within the product team.

Role Overview

The AI Builder position is based in Poland- Warsaw with remote work options, functioning as a hands-on engineering force inside the product team. The professional works alongside the Product Lead to prototype, build, and ship agent-first features end to end across various business units.

Key Responsibilities

Build agent-first products end to end inside business unit codebases, covering specification, prototyping, shipping, iteration, and handoff.
Enter unfamiliar codebases, adapt quickly within days, and produce functional software spanning backend systems, data platforms, workflow tools, and user interfaces.
Utilize agentic coding as the primary mode of work and build custom AI tooling when solutions do not exist.
Prototype directly with customers and iterate based on actual usage patterns.
Collaborate side by side with business unit engineering teams on their codebases to ensure they can maintain and extend the product.
Translate validated concepts into shipped products within weeks and deliver clean production-ready code with documentation and technical narratives.
Identify new build opportunities during delivery and contribute technical insights to the Product Lead.
Help codify successful processes into a repeatable build playbook for future scalability.

Requirements

Senior engineer with a proven body of shipped software to real users, with an engineering degree or self-taught background.
Founder or near-founder background with startup experience or full product ownership.
AI-native working style with daily hands-on use of agentic coding tools.
Polyglot pragmatism with production experience in at least two programming languages.
Ability to navigate messy legacy codebases and choose between greenfield, brownfield, and greyfield approaches.
Direct customer exposure experience including product demonstrations and live usage adaptations.
Three to eight years of professional experience in engineering, founding, or hybrid product and engineering roles.
Comfort with ambiguity, shifting priorities, and working across multiple codebases.

Nice to Have

Previous startup experience that includes a failed, acqui-hired, or side project venture.
Public technical work such as GitHub portfolios, conference talks, technical writing, open-source contributions, or personal side projects.
Experience integrating large language models into production systems covering evaluations, guardrails, retrieval, tools, and cost control.

Skills and Tools

Claude Code
Codex
SpecKit
LLMs
B2B SaaS architecture

About the Company

everfield acquires and holds European software companies for the long term, owning 100% of its business units while allowing them to be led by their own CEOs. The organization supports its portfolio through operating ratios that translate strategy into measurable performance across tens of companies and customers in European verticals.

How to Apply

Candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is this job located?

This role is based in Poland- Warsaw with remote options available.

What experience level is required for this position?

The role requires 3 to 8 years of experience, typically in engineering, founding, or hybrid product and engineering roles.

What tools and technologies are used in the daily workflow?

The daily workflow relies heavily on agentic coding tools including Claude Code, Codex, and SpecKit.

Will this role manage a team?

No, this is an individual contributor builder role and does not involve managing a team.

What is the interview process for this role?

The process includes a 30-minute talent acquisition screening call, a one-hour interview with the Product Lead Operations, and a 30-minute interview with the AI Lead.

Ready to apply?

The application is on the official everfield careers page.

Apply on company site