Junior AI Product Developer

Graduate; Amsterdam; Hybrid; EUR 45,000 - 55,000; Full time

Benefits offered by this job

Equity in Nance

Visa sponsorship available

Mentorship from senior engineers

Hybrid working and flexible hours

Fast-moving team

Job summary

Nance seeks a Junior AI Product Developer to join our hands-on founding team. You’ll build core capabilities of the Nance agent across the stack, focusing on UX, speed and polish while coordinating with the engineering team.

With 0–2 years of experience and a passion for LLMs, you’ll ship features using React, Python and cloud infrastructure, and benefit from direct mentorship in a fast-moving, hybrid environment in Amsterdam.

Qualifications

• 0 to 2 years of professional software engineering experience.
• You’ve built something with LLMs, at work or on the side.
• Solid software engineering fundamentals; React, Python or cloud infra helpful.
• Product sensibility: UX, speed and polish; speak up when something isn’t right.
• You learn fast, take ownership and can figure things out without detailed instructions.
• Daily use of AI coding tools (Claude Code, Codex or similar).
• Careful about correctness and data handling.
• Fluent in English; Dutch a plus not a requirement.

Responsibilities

• Work on the core capabilities of the Nance agent: the agent harness, tools and supporting features like memory management.
• Help build evals to test agent behavior and experiment with testing/observation techniques.
• Take features from idea to shipped across the full stack (React frontend, Python backend, Google Cloud infra) and iterate.
• Focus on UX, speed and polish in all delivered features.
• Use AI coding tools as a daily workflow.

Skills

LLM applications

React

Python

Cloud infra

UX focus

ownership

Education

Bachelor's degree or equivalent

Tools

React

Python

Cloud platforms

Job description

At Nance we’re looking for a Junior AI Product Developer to join our team.

About Nance

Nance is an AI financial controller colleague: an agent that works across the whole financial stack, from accounting software like ERPs to broader business software like email and Slack. She helps finance teams and accountants get mundane tasks done and derives complex insights from diverse data sources. Our mission is to make Nance feel and operate like the best finance employee anyone has ever hired.

The role

We’re a small engineering team with a high bar and few layers of process. You’ll report directly to our hands‑on founding team.

What you'll do

• Work on the core capabilities of the Nance agent: the agent harness, tools and supporting features like memory management.

• Help build evals that tell us whether the agent behaves the way it should, and experiment with new techniques for testing and observing agent behavior.

• Take product features from idea to shipped across the full stack (React frontend, Python backend, Google Cloud infra), then instrument and iterate on them.

• Sweat the details: UX, speed and polish are part of the job.

• Use AI coding tools as a default part of your daily workflow.
  

What we're looking for

• 0 to 2 years of professional software engineering experience. Strong graduates and self‑taught engineers with shipped projects are very welcome.

• You’ve built something with LLMs, at work or on the side, and you can tell us what worked and what didn’t.

• Solid software engineering fundamentals. Experience with React, Python or cloud infra helps, but fundamentals matter more than knowing our exact stack.

• Product sensibility: you care about UX, speed and polish, and you speak up when something doesn’t feel right.

• You learn fast, take ownership and are comfortable figuring things out without detailed instructions.

• Daily user of AI coding tools (Claude Code, Codex or similar) and enthusiastic about them as a way to build software.

• Careful about correctness and data handling.

• Fluent in English. Dutch is a plus, not a requirement.
  

Bonus points

• Experience with financial data, fintech, or accounting/ERP systems.

• Experience building eval harnesses, experimentation infrastructure, or A/B testing for AI features.
  

What we offer

• €45.000 to €55.000 gross per year including holiday allowance, depending on experience.

• Equity in Nance, above the market average.

• Visa sponsorship available.

• Direct mentorship from senior engineers and the founding team.

• The opportunity to join an incredibly fast-moving team and company.

• Hybrid working and flexible hours.