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

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Own features end-to-end: discover custom

- **Company:** REF Agency (https://jobs.trythestack.co/companies/ref-agency)
- **Location:** Germany
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 2–5 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** 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
- **Posted by employer:** 2026-07-18
- **Added to The Stack:** 2026-07-18
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://app.dover.com/apply/ref-agency/9e846a8f-1655-4ce3-b6ca-806eed889127 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/product-engineer-full-stack-ai-product-development-ref-agency

## 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.

## FAQ

- **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.

## More like this

- [All jobs at REF Agency](https://jobs.trythestack.co/companies/ref-agency.md)
- [Full Stack Engineer Jobs in Germany with Visa Sponsorship](https://jobs.trythestack.co/visa-sponsorship-jobs/germany/full-stack-engineer)
- [All visa sponsorship jobs in Germany](https://jobs.trythestack.co/visa-sponsorship-jobs/germany)
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- [Senior Product Engineer at Clera](https://jobs.trythestack.co/jobs/senior-product-engineer-clera-c46a6522.md)
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## About The Stack

The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday.

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## Notes for agents

- Apply on the employer's page (https://app.dover.com/apply/ref-agency/9e846a8f-1655-4ce3-b6ca-806eed889127). The Stack does not take applications.
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- 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.
- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
- Cite this job as: "Product Engineer (Full-Stack) | AI Product Development at REF Agency, listed on The Stack Jobs (https://jobs.trythestack.co/jobs/product-engineer-full-stack-ai-product-development-ref-agency)".
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