Blockchain Engineer (Web3)

TL;DR

Blockchain Engineer (Web3): Building and maintaining on-chain infrastructure to support liquidity management, cash operations, custody, and risk management with an accent on designing and implementing smart contract solutions, automation pipelines, and integrations. Focus on automating treasury workflows, consolidating and monitoring balances, and integrating with Treasury Management Systems for unified reporting.

Location: Remote (US and EMEA)

Salary: $130,000–$156,000 USD (for US-based candidates only)

Company

hirify.global is a leading blockchain and Web3 software company, co-founded by Ethereum's co-founder, pioneering technological developments within the Web3 ecosystem since 2014.

What you will do

• Design, build, and audit smart contracts to automate treasury workflows, including rebalancing and cross-chain operations.
• Build systems to consolidate and monitor on-chain balances across various wallet types and DeFi protocols.
• Automate recurring transactions and integrate on-chain infrastructure with Treasury Management Systems for unified reporting.
• Develop APIs and middleware to ensure seamless interaction between blockchain networks and internal systems.
• Support risk management with real-time visibility into protocol-level exposures, credit/counterparty risk, and liquidity.
• Collaborate with internal teams (Treasury, Finance, Security, Product) and external vendors for technical solutions and compliance.

Requirements

• Bachelor’s or Master’s in Computer Science, Engineering, or related field.
• 3–5+ years of blockchain development experience (Solidity, Rust, or similar).
• Hands-on experience with smart contract development, auditing, and deployment on Ethereum and/or other major chains.
• Strong knowledge of DeFi protocols, liquidity pools, bridges, and stablecoins.
• Experience with custodial and non-custodial wallet infrastructure (EOA, MPC, multi-sig).
• Proficiency with APIs, Python/TypeScript, and DevOps tooling for automation.
• Applicants will be required to submit to background checks including employment, education, and criminal record checks.

Nice to have

• Experience with Treasury Management Systems (TMS) integration.
• Prior work in fintech, digital asset exchanges, or institutional crypto custody.
• Strong security mindset: ability to identify and mitigate smart contract and infrastructure risks.
• Understanding of treasury operations, cash management, and financial risk.

Culture & Benefits

• Join a remote-friendly, start-up environment with a diverse team.
• Work in the rapidly evolving Web3 space, contributing to decentralization.
• Opportunities for continuous learning and exposure to new concepts and frameworks.
• Part of a network of builders, with alumni moving on to become tech entrepreneurs and leaders.
• Committed to diversity and equal opportunity.