Tirios.ai

We are looking for a Web3 Front-End Engineer to build intuitive, high-performance user interfaces for decentralized applications. You will work at the intersection of modern web development and blockchain technology, creating seamless experiences for DeFi, trading, and wallet products. This is a role for someone who understands both pixel-perfect UI and the intricacies of wallet integration.
 

What You'll Do

• Build responsive, modern UIs using React, Next.js, and TypeScript for Web3 applications
• Integrate Web3 wallets (MetaMask, WalletConnect, etc.) and implement transaction signing flows
• Connect frontend applications with smart contracts using libraries like Ethers.js, Viem, or Wagmi
• Work with real-time data—indexers, subgraphs, WebSocket services—for DeFi dashboards and trading interfaces
• Collaborate with product, design, and blockchain teams to deliver exceptional user experiences from concept to deployment
• Optimize frontend performance, accessibility, and scalability
• Write clean, maintainable, well-tested code and participate in architectural decisions

What We're Looking For

Must-Have:

• 3+ years of professional frontend development experience
• Strong expertise in React, Next.js, TypeScript, HTML5, and CSS3
• Hands-on experience with Web3 libraries—Ethers.js, Viem, Wagmi, or Web3.js
• Understanding of Web3 concepts—wallets, signing transactions, smart contract interaction, EVM-compatible chains
• Experience consuming REST APIs and WebSocket services for real-time data
• Familiarity with state management (Redux, Zustand, or similar) and modern frontend architecture
• Proficient English communication skills (Upper-Intermediate B2 or higher)

Nice-to-Have:

• Experience building DeFi applications—lending, trading, staking, DEX interfaces
• Familiarity with specific protocols—Uniswap, PancakeSwap, or similar
• Product-oriented mindset—you're a crypto user yourself and bring firsthand product intuition
• Experience with data-heavy UIs—subgraphs, real-time charting, trading dashboards
• Understanding of Solidity or blockchain infrastructure
• Figma collaboration—turning designs into pixel-perfect components
• AI-assisted development—experience with Cursor, Copilot, or similar tools

What We Offer

• Competitive salary (discussed privately) + performance bonuses
• Fully remote—work from anywhere within Ukraine or EU timezone
• Flexible working hours—focus on results, not clock-watching
• Equipment provided—company MacBook Pro or equivalent
• Learning & Development Budget—$2,000/year for courses, conferences, certifications
• Home office stipend—$1,000 one-time workstation setup allowance
• Annual paid leave—20 days + local public holidays
• Cutting-edge projects—build the future of finance and Web3
• No bureaucracy—real ownership, real impact, real shipping

How to Apply

Please submit:

1. Your CV and/or LinkedIn profile
2. Portfolio or links to live Web3 applications you've built

We are looking for a Smart Contract Auditor to join our security team. You will audit DeFi protocols, identify critical vulnerabilities, and work directly with development teams to secure their code before deployment. This is not a "run Slither and generate a report" role—we need someone who thinks like an attacker, understands EVM internals, and can deliver clear, actionable findings. 

What You'll Do

• Conduct full-scope audits of Solidity smart contracts, including manual line-by-line review, automated scanning (Slither, Mythril), and fuzz testing (Foundry/Echidna)
• Identify and exploit vulnerabilities such as reentrancy, oracle manipulation, access control flaws, economic attacks, and governance risks
• Write Foundry-based Proofs of Concept (PoCs) demonstrating each critical finding with reproducible test cases
• Produce detailed audit reports with clear severity classifications, exploit paths, and specific remediation recommendations
• Collaborate with client dev teams during the remediation phase—explain findings, review fixes, and ensure vulnerabilities are properly addressed
• Stay current with emerging attack vectors, EIPs, and DeFi primitives

What We're Looking For

Must-Have:

• 2+ years of experience in smart contract auditing or blockchain security engineering
• Expert-level Solidity and deep understanding of the EVM (storage layout, opcodes, gas mechanics, proxy patterns)
• Strong Foundry/Forge skills—you write fuzz tests and invariants as part of your audit workflow
• DeFi domain expertise—lending protocols, AMMs, liquid staking, governance modules, tokenomics
• Ability to write clear, concise reports that explain technical risks to both engineers and non-technical stakeholders
• Upper-Intermediate English or higher—you'll communicate directly with international clients

Nice-to-Have:

• Experience with formal verification (Certora, Halmos)
• Track record on public audit contest platforms (Code4rena, Sherlock)
• Knowledge of Rust/Cairo for non-EVM chains
• CTF experience (Ethernaut, Damn Vulnerable DeFi)

What We Offer

• Competitive salary (discussed privately) + performance bonuses for critical findings
• Fully remote—work from anywhere within Ukraine or EU timezone
• Flexible working hours—focus on results, not clock-watching
• Professional development—budget for conferences, courses, certifications
• Work on cutting-edge protocols—you'll see code before it hits mainnet
• No micromanagement—you own your audit process from start to finish

How to Apply

Please submit:

1. Your CV and/or LinkedIn profile + Github account
2. Links to public audit reports, Code4rena/Sherlock profile, or bug bounty findings (anonymized if under NDA)