Braiins
Product Discovery & Prototyping Engineer
today
Remoteprototypingdata analysisai-assisted developmentrequirements definition
Role involves exploring, validating, and shaping new product ideas through prototyping and discovery in partnership with product owners.
Responsibilities
- 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: user value, complexity, dependencies, supportability, risks, and measurable success criteria.
- 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, including reusable templates, AI-assisted workflows, and feedback loops.
- Use AI tools responsibly to accelerate research, implementation, testing, documentation, automation, and delivery while keeping strong human ownership, review, security, and production quality
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.
Conditions
- 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 parking spot.
- Modern offices in the center of Prague, Czech Republic — the heart of Europe.
Other
- As a Product Discovery & Prototyping Engineer , you will help us quickly explore , validate , and shape new product ideas across Braiins Pool , Hashpower , and related products. You will work as a close partner to the product owner, turning business ideas, user problems, requirements, and early designs into clear specifications, experiments, clickable or functional prototypes, and validated product proposals.
- This role combines analytical thinking , product discovery , data analysis , requirements definition , communication with design and engineering teams, and AI-assisted prototyping . You do not need to be a full-time production developer from day one, but you should be comfortable learning technical tools, using AI responsibly, and building lightweight prototypes that help us decide what is worth building properly.
- 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.
- 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.
- You are from Prague or its surrounding area.