Job Opportunities API

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 Wirex team! Who we are: At  Wirex,  we’re   redefining   how   the   world   uses   digital   money . From  launching   the   first   crypto-enabled   debit   card   to   giving   everyday   users   access   to   digital   currencies   and   rewards ,  we’re   making   finance   more   accessible . With  more   than  6  million   users   across  130+  countries , Wirex  is   building  a  future   where   digital   currency works   for   everyone . Type of Cooperation: B2B Contract. Location: Full remote (EU preferred, no sanctioned countries). As a team member, you’ll be involved in: • Design, build, and maintain backend services using Go, focusing on high-performance, low-latency solutions for Web3 card payment processing. • Develop and maintain smart contract integrations, including interactions with on-chain data and handling transaction flows between the blockchain and application layer. • Create and manage APIs for interactions with the blockchain, payments infrastructure, and third-party services (e.g., Wirex B2B API, Ethereum, and other EVM-compatible chains). • Implement efficient and secure transaction handling, with support for asynchronous transaction confirmations and a processing oracle to facilitate sequential transaction workflows. • Develop services to support cross-chain token swaps, stablecoin transactions, and fund management across different chains. • Implement secure data handling practices for sensitive financial data and user information, including encryption, authentication, and authorization protocols. • Ensure high availability and reliability through monitoring, debugging, and troubleshooting issues in live environments, particularly around transaction and fund flows. Required Skills and Qualifications: • 3+ years in Go development, with 1+ year in Web3 or blockchain projects. • Understanding of blockchain fundamentals, especially Ethereum and EVM-compatible networks; experience with smart contracts, Ethereum nodes (Geth, Infura, etc.), and wallet integrations. • Familiarity with financial transaction lifecycles, particularly in Web3 ecosystems, including token transfers, stablecoin transactions, and cryptocurrency wallet management. • Proficient in RESTful API and gRPC service design and development; experience with API security and integration best practices. • Proficient in working with both relational (MySQL), with a strong focus on data consistency and performance. • Experience with containerized applications and Kubernetes for deployment in production environments; familiarity with managing Go microservices in Kubernetes. • Understanding of cryptographic principles and experience implementing secure data storage and transmission solutions. • Familiarity with cloud infrastructure (e.g., AWS, GCP, Azure) and CI/CD pipelines for Go applications. • Good English for documentation, Ukrainian or Russian communication skills. Nice-to-Have Skills: • Understanding of zk-rollups, sidechains, and Layer 2 scaling solutions. • Experience with monitoring and observability tools to track service health, particularly for financial transaction systems. • Experience with Infrastructure-as-Code tools (e.g., Terraform) and knowledge of automated deployment strategies for blockchain-related services. Benefit: • Premium tariffs for Wirex product. • Semi-remote work with flexible hours—work from home or office. • Home office allowance. • Virtual share options scheme after the probation period. • Health insurance coverage after the probationary period. • Generous vacation policy: 20 business days of paid leave. • Paid sick leave, Birthday, and Anniversary leave. • Length of Service Holidays. • Engaging in online events for learning and enjoyment. • PE accounting and support.