Backend Engineer (Go/JS) DEX & Web Services
Posted
Summary
Backend engineer building high-concurrency microservices for a decentralized exchange and web services in the Bitcoin ecosystem: off-chain order books, trade matching, real-time liquidity monitoring, and middleware connecting services to blockchain nodes, using Go or Node.js/TypeScript with PostgreSQL, Redis/MongoDB.
ABOUT THE ROLE
We are looking for two Backend Engineers to build the scalable infrastructure for a decentralized exchange and suite of web services integrated with the Bitcoin ecosystem. This role focuses on the Service Layer the high-concurrency engine that handles API requests, manages off-chain order matching and interfaces with blockchain nodes.
Core working hours 10am 1pm CET
RESPONSIBILITIES
- Service Development - develop and maintain the backend microservices that power the exchange and the wider web service ecosystem
- Order Management - implement the logic for off-chain order books, trade matching and real-time liquidity monitoring
- Node Integration - build the middleware that connects Go JS services to the core blockchain network
- Scalability - optimize backend services for low latency and high availability
- Security - implement industry-standard security practices for handling sensitive data
REQUIREMENTS
- Strong proficiency in Go (Golang) or Node.js (JavaScript/TypeScript) with deep understanding of asynchronous programming and microservices
- Experience building DEX components, API gateways, or indexing services
- Expertise in designing and implementing RESTful or GraphQL APIs
- Experience with both SQL (PostgreSQL) and NoSQL (Redis/MongoDB) for real-time data tracking
- Ability to build thread-safe systems handling thousands of concurrent user requests