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Blockchain Architect at Protofire. Protofire is looking for a Blockchain Architect to join our technical team and help us bring new project to web3 communities!. Responsibilities. . Run discovery calls to map goals, constraints, and existing systems.. . Translate pain points into concrete requirements and success metrics.. . Partner with Sales to surface top customer problems and keep product/engineering aligned.. . Solution design & estimation. . Shape solution architecture (incl. trade-offs), document assumptions and risks.. . Validate estimates with engineering; flag delivery risks early.. . Explain how choices impact timelines, cost, security, and future roadmap.. . Proposals & deal support.. . Build proposals that cover approach, scope, milestones, pricing, and acceptance criteria.. . Articulate business value alongside the technical plan.. . Co-lead technical sections of negotiations and help close.. . Technical due diligence during sales. . Answer technical objections, run demos, and produce clarifications. Ensure both sides share a single, written understanding of scope and interfaces.. . Provide market & competitive insight: track protocols, tooling, and competitors.. . For complex briefs, research adjacent risks/opportunities and provide recommendations.. . Produce clean handover docs (architecture, APIs, non-functional requirements).. . Minimum Requirements. . 2 years of experience in a similar position.. . Daily user of on-chain tools; informed investor with hands-on experience across wallets, DeFi, and governance. Active in Discord/X/GitHub and industry events.. . Track record shipping or maintaining OSS infra; comfortable working in public and with community feedback.. . Deep knowledge of L1/L2 ecosystems (e.g., Ethereum, Polkadot, Cardano or similar), node/RPC infra, indexing, auth, and standards.. . Experience designing, reviewing, and deploying contracts; understanding of dApp architectures and CI/CD for Web3.. . Solid grasp of crypto primitives, key management, multisig/custodial/non-custodial wallets, and secure coding patterns.. . Full-stack literacy: Proficiency across modern back-end and front-end frameworks; can read code and discuss implementation trade-offs with engineers.. . Practical experience running SCRUM/Agile in product teams; can turn requirements into backlog, stories, and milestones.. . Able to explain complex Web3 concepts to non-engineers and write crisp specs, proposals, and risk notes.. . Company Location: Portugal.