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’reredefininghowtheworldusesdigitalmoney. From launchingthefirstcrypto-enableddebitcardtogivingeverydayusersaccesstodigitalcurrenciesandrewards, we’remakingfinancemoreaccessible.

With morethan 6 millionusersacross 130+ countries, Wirex isbuilding a futurewheredigitalcurrency worksforeveryone.

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.

Originally posted on Himalayas