Product Owner - UX Oriented

About the role

We are looking for a Junior Product Owner with a strong UX orientation to join our Product team. Your mission: transform business and user needs into clear, structured, user‑centric product specifications, so our R&D team can build features that are useful, consistent and simple to use.

You will sit at the intersection of Product, UX/UI and Engineering. You will own the translation of product vision into actionable delivery — from discovery and user journeys to wireframes, user stories and acceptance criteria — and you will close the loop by validating what is shipped against the original user intent.

What you’ll do

1. Structure product delivery: EPICs, User Stories & Specifications

• Break down the product vision into coherent EPICs aligned with business logic and user journeys.
• Write high‑quality User Stories, including user context and objective, detailed acceptance criteria, edge cases and business rules.
• Produce clear, actionable functional specifications that developers can build from with minimal back‑and‑forth.
• Guarantee end‑to‑end traceability per feature: EPIC → User Stories → Tasks → Delivery.
• Maintain a structured, up‑to‑date product documentation in Jira.

2. Embed UX deeply into product definition

• Actively participate in product discovery and user need investigation.
• Translate every business need into a clear UX intent for the end user.
• Build and maintain Personas, User Journeys and functional flows.
• Identify friction points along the user experience and propose concrete improvements.
• Make sure every User Story carries an explicit UX value (not just a technical or business one).
• Integrate into specifications both UX rules (user feedback, readability, accessibility, etc.) and real‑world use cases (not theoretical ones).

3. UI/UX design

• Produce low‑fi and mid‑fi wireframes to support discussions with Product, Design and Engineering.
• Collaborate efficiently in Figma with the UX/UI designer and developers.
• Describe interface states and interactive behaviours precisely.
• Ensure consistency across complete user journeys — not just isolated screens.
• Formalise end‑to‑end scenarios including normal paths and edge cases, and anticipate unexpected user behaviours.

4. UX validation and functional quality

• Define testable acceptance criteria for every story.
• Take an active role in product acceptance testing: functional verification and UX verification (fluidity, clarity, ease of understanding).
• Make sure what is delivered matches the original product and UX intent.

5. Continuous improvement loops based on usage and data

• Measure and analyse user behaviour on our products.
• Leverage qualitative feedback combined with usage data.
• Propose concrete product iterations and formalise them properly in the backlog.

What we’re looking for

• Specification writing — ability to write clear, exploitable deliverables for developers: EPICs, User Stories, usage‑oriented functional specifications.
• Figma collaboration — comfortable using and collaborating in Figma to produce and iterate on wireframes.
• First UX/UI experience — internship, junior position, side project or coursework where you contributed to UX deliverables (personas, journeys, wireframes, usability work).
• Structured mindset — you naturally prioritise, break down complex problems and approach delivery iteratively.
• Product / user empathy — you start from the user’s reality, not from features in isolation.
• Languages — professional working proficiency in English and French (written and spoken).

Nice to have

• Hands‑on experience with Jira (or a similar product‑management tool).
• Exposure to Agile / Scrum ceremonies (refinements, sprint planning, reviews, retrospectives).
• Basic familiarity with product analytics tools or usage data analysis.
• Curiosity for cybersecurity, cryptography or B2B deeptech environments — you don’t need to be an expert, but you want to learn.

What’s in it for you at CryptoNext

• A competitive salary tailored to your experience.
• A hybrid working model based in Paris.
• Opportunities for international travel based on project needs.
• The chance to lead a talented team at the forefront of post‑quantum cryptography.
• A collaborative and forward‑thinking environment where innovation is celebrated.