Product Engineer (Full-Stack) | AI Product Development at REF Agency

✨ The Stack take on this REF Agency job

• 🏢 This is REF Agency's only job here right now
• 🛂 Visa: EU Blue Card. Minimum salary: €50,700 a year guide
• 💡 No salary shown. Ask REF Agency if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

Apply with your AI assistant

With The Stack connected to Claude, ChatGPT or Cursor, paste this. Your assistant tailors your CV and cover letter, checks the visa facts and gives you the apply link.

Help me apply to this job on The Stack: https://jobs.trythestack.co/jobs/product-engineer-full-stack-ai-product-development-ref-agency

Not connected yet? Connect in a minute. To help your user apply, call the MCP tool prepare_application with slug "product-engineer-full-stack-ai-product-development-ref-agency": it returns the apply link, the visa facts and a CV and cover letter checklist. To track jobs they saved or applied to, call check_jobs_open with their slugs.

About the role

Responsibilities:
- Own features end-to-end: discover customer problems, design solutions, implement, ship, monitor, and iterate in production.
- Collaborate closely with founders, engineers, and customers to surface requirements and validate assumptions.
- Make product trade-offs and prioritize work with a focus on measurable customer value.
- Design pragmatic, maintainable technical solutions across frontend, backend, and APIs.
- Ship production-ready features rapidly and use user feedback and metrics to iterate.
- Leverage AI-assisted tools to accelerate development, testing, and code review.
- Contribute to an in-person engineering culture that emphasizes collaboration and ownership.

Requirements:
- Proven full-stack engineering experience with demonstrable shipped features or products.
- Strong product thinking and a customer-first mindset; able to translate customer pain into product solutions.
- Experience owning features or products end-to-end with high autonomy.
- Excellent problem-solving and pragmatic engineering judgment; able to balance speed and quality.
- Comfortable working in a fast-paced startup environment and making independent decisions.
- Strong communication skills in English and ability to collaborate directly with stakeholders.
- Practical familiarity with TypeScript and/or Python is a plus; experience with cloud apps, APIs, and AI-assisted tools beneficial.

Responsibilities

Own the entire product lifecycle from identifying customer pain points to designing, building, and shipping production-ready features. Collaborate directly with founders and customers to make product decisions and iterate based on user feedback.

Requirements

Requires strong full-stack engineering experience with a customer-first mindset and the ability to work autonomously in a fast-paced startup. Proficiency in TypeScript and Python is advantageous, along with a proven track record of owning products end-to-end.

Key skills

• Full-stack Development — in 83 other listings on The Stack
• Product Thinking — in 9 other listings on The Stack
• TypeScript — in 467 other listings on The Stack
• Python — in 1200 other listings on The Stack
• System Design — in 199 other listings on The Stack
• API Development — in 126 other listings on The Stack
• Cloud Applications — not in any other listing on The Stack
• AI-assisted Development — in 19 other listings on The Stack
• Problem Solving
• End-to-end Feature Ownership
• Customer Experience Design
• Pragmatic Engineering

On The Stack (as of 2026-11-05)

• This is REF Agency's only listing on The Stack.
• 166 visa-sponsored jobs in Germany on The Stack, posted in the last 60 days.
• 28 visa-sponsored full stack engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about REF Agency

Is this Product Engineer (Full-Stack) | AI Product Development role still open?

It was posted on 2026-07-18. Listings more than 30 days old may no longer be active, so check REF Agency's site before applying.

Does REF Agency offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on REF Agency's site.

Where is this role located?

The listing gives the location as Germany. It is marked on-site.

What skills does this role ask for?

The listing names: Full-stack Development, Product Thinking, TypeScript, Python, System Design, API Development, Cloud Applications, AI-assisted Development, Problem Solving, End-to-end Feature Ownership, Customer Experience Design, Pragmatic Engineering.