Middle/Senior Golang Engineer

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.