Product Discovery & Prototyping Engineer

The role

You will explore, validate, and shape new product ideas across Braiins Pool, Hashpower, and related products. You will work with the product owner to turn business ideas and user problems into specifications, experiments, and prototypes.

What you will do

• Work closely with the product owner to explore, structure, and validate new product and feature ideas.
• Translate business goals, customer problems, and stakeholder input into functional and non-functional requirements.
• Create product discovery materials such as problem statements, user stories, acceptance criteria, flows, edge cases, validation plans, and decision records.
• Use AI-assisted development and prototyping tools to create quick experiments, mockups, clickable prototypes, scripts, dashboards, or lightweight functional prototypes.
• Cooperate with design, backend, frontend, QA, support, and data-oriented stakeholders to clarify feasibility, user value, expected impact, and operational consequences.
• Help verify product viability before full engineering investment.
• Query and interpret data from telemetry databases to help to validate ideas.
• Document findings clearly so engineering teams can continue from validated discovery into implementation.
• Actively improve our discovery and prototyping process.
• Use AI tools responsibly to accelerate research, implementation, testing, documentation, automation, and delivery.

Required qualifications

• Mid/Senior experience in product analysis, business & data analysis, product ownership, requirements engineering, technical analysis.
• Strong analytical thinking and ability to structure ambiguous ideas into clear problems, requirements, assumptions, and next steps.
• Experience defining functional and non-functional requirements, acceptance criteria, user flows, edge cases, and product validation approaches.
• Ability to communicate with product, design, engineering, QA, support, and business stakeholders.
• Ability to query SQL-like queries and interpret data.
• Comfort working with technical products where product decisions must consider data flows, operational behavior, constraints, and customer workflows.
• Interest in learning AI-assisted prototyping, lightweight coding, scripting, or no-code/low-code tools if you do not already use them.
• Strong ownership, curiosity, and ability to move quickly without losing clarity or discipline.
• Willingness to understand Bitcoin mining, pool operations, hashpower products, and customer workflows.

Nice to have

• Previous experience with product discovery, technical product management, UX collaboration, or early-stage feature validation.
• Experience creating prototypes, internal tools, scripts, dashboards, clickable mockups, or AI-assisted proofs of concept.
• Experience with SQL, APIs, data analysis, Figma, Git, Python, TypeScript, or similar tools.
• Experience with Bitcoin, cryptocurrencies, mining, fintech, trading, infrastructure, or B2B technical products.
• Ability to connect qualitative user feedback with quantitative signals and product metrics.
• You can move from vague idea to clear prototype or requirement quickly.
• You enjoy connecting product thinking with technical feasibility.
• You have used AI tools for analysis, prototyping, requirements, or coding assistance.
• You are interested in Bitcoin, mining, or technical products with real operational users.

Benefits

• Full-time position with flexible working hours.
• Both possibilities to work as an Employee or Freelance.
• Indefinite agreement.
• For employees 5 weeks of vacation and 3 sick days.
• Company events, and occasional brunches in the office.
• Relaxing room, a shower, and a shared parking spot.
• Modern offices in the center of Prague, Czech Republic.

About the company

Braiins offers products including Braiins Pool and Hashpower.