Senior Golang Engineer - Backend Services for Fintech and Web3 Payment Systems

Jobgether • Ireland

Remote

This Job is No Longer Active This position is no longer accepting applications

AI Summary

Design and develop high-performance Go-based backend services for Web3 and card payment systems. Build and maintain smart contract integrations, cross-chain operations, and secure financial data management. Requires 3+ years Go experience with blockchain fundamentals and strong API development skills.

Key Highlights

Go programming with 3+ years professional experience

Blockchain infrastructure and smart contract integration

Cross-chain token swaps and stablecoin transaction support

Secure financial data handling and encryption

Remote work with flexible hours

Key Responsibilities

Design, develop, and maintain backend services in Go with high-performance and low-latency processing for Web3 and card payment systems

Build and maintain smart contract integrations including interactions with on-chain data and transaction flows between blockchain networks and application services

Develop and manage APIs connecting blockchain infrastructure, payment systems, and external services

Implement secure and efficient transaction-processing workflows including asynchronous confirmations and sequential transaction orchestration

Develop services supporting cross-chain token swaps, stablecoin transactions, cryptocurrency transfers, and fund management across multiple blockchain networks

Implement robust security measures for sensitive financial and user data including encryption, authentication, authorization, and secure data transmission

Build and maintain reliable Go microservices deployed in containerized production environments

Monitor, troubleshoot, debug, and improve live systems with particular attention to payment, transaction, and fund flows

Work with databases to ensure data consistency, integrity, and performance across financial transaction workflows

Contribute to cloud infrastructure, CI/CD pipelines, deployment processes, and production engineering practices

Collaborate with other engineers and stakeholders to deliver scalable, secure, and maintainable fintech and blockchain solutions

Continuously improve system reliability, performance, observability, and engineering standards

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Technical Skills Required

Go Blockchain RESTful APIs gRPC Kubernetes MySQL

Benefits & Perks

Fully remote working opportunity with flexible working hours

Home office allowance

Premium rates for company's products

Virtual share options scheme

Health insurance coverage

20 business days of paid annual leave

Paid sick leave

Birthday and work anniversary leave

Additional length-of-service holidays

PE accounting support

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Nice to Have

Understanding of zk-rollups, sidechains, and Layer 2 scaling technologies

Experience with monitoring, observability, and service-health tooling for high-volume or financial transaction systems

Experience with Infrastructure-as-Code tools such as Terraform

Knowledge of automated deployment strategies for blockchain and Web3 services

Ukrainian or Russian communication skills

Job Description

As a Middle/Senior Golang Engineer, you’ll build and evolve high-performance backend services powering modern fintech and Web3 payment products. You’ll work extensively with Go, blockchain infrastructure, smart contracts, and EVM-compatible networks. The role covers everything from API and microservice development to transaction processing, cross-chain operations, and secure financial data management. You’ll help design reliable systems capable of handling sensitive payment and fund flows with high availability and low latency. Working closely with product and engineering teams, you’ll contribute to solutions spanning blockchain, payments, and third-party integrations. You’ll also have the opportunity to strengthen production reliability through monitoring, debugging, and observability. This is a fully remote, international engineering environment where technical ownership, security, and scalability are highly valued.

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