Ai-Native Product Engineer

Loop OS is the ERP for circularity - trade-in, returns, refurbishment, logistics and resale for leading European retailers, in one connected platform.

With Loop OS Flux, we are building the next generation of the product from scratch, AI-native.

We are a growing team based in Coimbra.

The platform runs mission-critical operations under contractual SLAs: real stores, real warehouses, real devices moving through it every day.

About the Role We are looking for an AI-Native Product Engineer to join a small, high-trust team of four Product Engineers and the CTO, supported by shared QA, UX/UI Engineering and a Product Owner.

This is a product-first engineering role.

You own a product area in Loop OS Flux end-to-end — from understanding client needs to shipping and improving the solution in production.

You combine business analysis, product ownership and hands‐on engineering, and use AI-native workflows to move faster.

Technical Requirements Strong full-stack capability across backend and frontend; Rails experience is useful, not required.

Comfortable designing APIs, business logic and systems that stay maintainable.

Experience with modern frontend frameworks (React or similar).

AI-assisted development already part of your daily workflow (Cursor, Claude Code or similar).

Pragmatic about testing, quality and shipping.

Key Responsibilities Own a product area in Loop OS Flux from problem to production.

Work directly with clients and turn business problems into product decisions.

Design the approach before writing code; prototype quickly when it helps.

Use AI-native workflows to accelerate delivery without losing engineering judgement.

Collaborate with Product Engineers, the CTO, QA, UX/UI Engineering and the Product Owner.

Required Skills & Experience Track record of shipping product features in real environments.

Able to work across backend and frontend with confidence.

Evidence of what you have built matters more than years of experience — mid, senior and exceptional AI-native juniors are welcome.

Fluent English; clear communicator withclients and teammates.

Product-minded: you care about solving the right problem, not just building what was asked.

Autonomous and accountable: you own outcomes, and know when to ask for help.

Pragmatic: you know when to move fast and when to invest in foundations.

AI-enabled: agentic tools are already how you work.

Find out what is like to work at Loop OS Youthful and friendly entrepreneurial spirit, we support each other relentlessly.

Career development and significant growth within the company, we push each other to excel every day.

Integrative team-buildings and outdoor activities, we value our day-to-day out of the office.

Opportunity to work close to big companies, we never want to stop growing.

Health insurance, + 26 days of holidays per year and a Coverflex budget per month.

At Loop OS we are committed to create an inclusive and diverse workplace.

Our employment decisions are based without regard to race, religion, color, age, genetic information, sex, sexual orientation, gender, gender identity, gender expression, citizenship, ancestry, marital status, physical or mental disability, pregnancy or childbirth.

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