Protofire is looking for an enthusiastic Middle/Senior Fullstack Developer who is deeply passionate about the Web3 space.

How you will make an impact:

• Develop both back-end and front-end web services and products across various blockchains and ecosystems, primarily EVM-compatible, catering to millions of web3 users. 
• Gain a comprehensive understanding of the business aspects of projects and enhance them with innovative features and functionalities. 
• Engage in effective communication with network/platform owners and the ecosystem community, actively contributing to the broader adoption of web3.
• Contribute significantly to the open-source community.

What you need to succeed:

• 5+ years of experience in software engineering.
• 3+ years of commercial development experience with JS/Typescript, and any (the more the better) of the following: Node.JS, Go, Rust, Python.
• Proficiency with Postgress, MongoDB and/or nonSQL.
• Knowledge about how a blockchain works, preferably Ethereum is a must.
• Experience with Solidity.
• Experience with some of the following libraries and utils: hardhat, web3.js, ethers.js, web3.py, storybook, etc.
• Experience in AWS.

• A desire to keep up with blockchain technology trends, readiness to research new, and a real interest in decentralization.

Protofire is looking for a Mobile Developer to build a consumer mobile app (iOS + Android) focused on seamless onboarding and DeFi credit flows. You’ll work closely with product and backend teams to deliver an MVP with a strong UX and production-grade security.

Requirements

• 5+ years of professional mobile development experience
• Strong experience with iOS and/or Android (native Swift/Kotlin) or cross-platform (React Native / Flutter)
• Proven experience shipping production mobile apps
• Solid understanding of wallets, key management, self-custody, and blockchain transaction flows
• Hands-on experience with EVM / Web3 SDKs, DeFi interactions, signing, and security best practices
• Comfortable working with APIs, state management, and mobile performance optimization
• English B2+ (spoken and written)

Nice to have

• Experience integrating embedded wallet providers (e.g., Privy, Dynamic, Web3Auth, Turnkey)
• Experience with KYC/card providers and card lifecycle flows
• Experience building fintech apps (payments, credit, lending)

We are seeking a detail-oriented tester to join our team at Protofire. The ideal candidate will have a foundational understanding of Web3 and blockchain technologies, possess strong manual testing skills and some automated testing experience, and be proficient in English communication.

Key Responsibilities:

• Conduct comprehensive manual testing of Web3 and blockchain applications.
• Identify, document, and track bugs and issues, collaborating closely with developers to ensure timely resolution.
• Communicate effectively with international clients, providing clear and concise updates on testing progress and findings.
• Utilise best practices in manual testing to ensure thorough coverage and reliable results.
• Demonstrate curiosity and an ability to foresee and test alternative scenarios to identify potential issues before they arise.

Requirements:

• 2+ years of QA experience.
• Basic knowledge of Web3 and blockchain technologies.
• Proficiency in manual testing with a solid understanding of best practices and organization.
• Automated testing experience.
• Advanced English communication skills, both written and verbal, to effectively interact with global clients.
• A keen eye for detail, with the ability to foresee and cover alternative scenarios.

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.