Middle/Senior Golang Engineer

Wirex; United States; Remote; CAD 110,000 - 170,000; Full time

Benefits offered by this job

Premium tariffs for Wirex product

Semi-remote work with flexible hours

Home office allowance

Virtual share options after probation

Health insurance after probationary

Job summary

Wirex is seeking a Golang Developer to build our fintech products and transform the payment landscape. Join a team of professionals delivering crypto-enabled services and scalable backend systems.

You will design and maintain backend services in Go, integrate with on-chain data, and develop APIs for blockchain interactions across Ethereum and EVM chains. The role emphasizes high-performance, secure transaction flows and reliable operations.

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 and wallet integrations.
• Proficient in RESTful API and gRPC service design; API security best practices.
• Proficient with MySQL and data consistency in distributed systems.
• Experience with containerized apps and Kubernetes for production deployments.
• Familiar with cloud infrastructure (AWS/GCP/Azure) and CI/CD for Go apps.
• Good written and spoken English; Ukrainian or Russian communication helpful.

Responsibilities

• Design, build, and maintain backend services using Go for high-performance, low-latency Web3 card payments.
• Develop and maintain smart contract integrations and on-chain interactions.
• Create and manage APIs for blockchain, payments infrastructure, and third-party services.
• Implement secure transaction handling with asynchronous confirmations and processing orchards.
• Develop services for cross-chain token swaps and stablecoin transactions across chains.
• Ensure secure data handling with encryption, authentication, and authorization.
• Maintain high availability with monitoring, debugging, and incident response.

Skills

Go (Golang)

Web3 / Blockchain

RESTful API

gRPC

MySQL

Cloud (AWS/GCP/Azure)

Security

English communication

Ukrainian/Russian

Tools

Docker

Kubernetes

Ethereum / Geth / Infura

Job description

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.