<p>We are looking for a Golang Developer to build our leading-edge fintech products. Don’t miss this opportunity to transform the payment landscape with a team of professionals. Then join our <a href="https://himalayas.app/companies/wirexapp">Wirex</a> team! </p><h3>Who we are:</h3><p>At <a href="https://himalayas.app/companies/wirexapp">Wirex</a>, we’reredefininghowtheworldusesdigitalmoney. From launchingthefirstcrypto-enableddebitcardtogivingeverydayusersaccesstodigitalcurrenciesandrewards, we’remakingfinancemoreaccessible.</p><p>With morethan 6 millionusersacross 130+ countries, <a href="https://himalayas.app/companies/wirexapp">Wirex</a> isbuilding a futurewheredigitalcurrency worksforeveryone.</p><h3>Type of Cooperation: B2B Contract. </h3><p>Location: Full remote (EU preferred, no sanctioned countries). </p><p>As a team member, you’ll be involved in: </p><ul><li>Design, build, and maintain backend services using Go, focusing on high-performance, low-latency solutions for Web3 card payment processing. </li></ul><ul><li>Develop and maintain smart contract integrations, including interactions with on-chain data and handling transaction flows between the blockchain and application layer. </li></ul><ul><li>Create and manage APIs for interactions with the blockchain, payments infrastructure, and third-party services (e.g., <a href="https://himalayas.app/companies/wirexapp">Wirex</a> B2B API, Ethereum, and other EVM-compatible chains). </li></ul><ul><li>Implement efficient and secure transaction handling, with support for asynchronous transaction confirmations and a processing oracle to facilitate sequential transaction workflows. </li></ul><ul><li>Develop services to support cross-chain token swaps, stablecoin transactions, and fund management across different chains. </li></ul><ul><li>Implement secure data handling practices for sensitive financial data and user information, including encryption, authentication, and authorization protocols. </li></ul><ul><li>Ensure high availability and reliability through monitoring, debugging, and troubleshooting issues in live environments, particularly around transaction and fund flows. </li></ul><h3>Required Skills and Qualifications:</h3><ul><li>3+ years in Go development, with 1+ year in Web3 or blockchain projects. </li></ul><ul><li>Understanding of blockchain fundamentals, especially Ethereum and EVM-compatible networks; experience with smart contracts, Ethereum nodes (Geth, Infura, etc.), and wallet integrations. </li></ul><ul><li>Familiarity with financial transaction lifecycles, particularly in Web3 ecosystems, including token transfers, stablecoin transactions, and cryptocurrency wallet management. </li></ul><ul><li>Proficient in RESTful API and gRPC service design and development; experience with API security and integration best practices. </li></ul><ul><li>Proficient in working with both relational (MySQL), with a strong focus on data consistency and performance. </li></ul><ul><li>Experience wi