Backend Engineer

OneBullEx; United States; Remote; USD 120,000 - 190,000; Full time

Job summary

OneBullEx is seeking a senior backend engineer to lead the architecture and core code for an exchange partner system. You will implement high-concurrency rebate logic with a focus on zero-error fund transfers, while using Pulsar or Kafka for massive order flow processing.

You will design real-time clearing and reconciliation, address data consistency across distributed services, and optimize DB transactions. Expect responsibility for API performance in Gin and thorough technical documentation.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• 3+ years of Golang development with Goroutines and GC understanding.
• Proficiency in Gin, Echo, GORM and microservices architecture.
• Deep knowledge of Pulsar or Kafka messaging systems.
• Relational DB design and optimization (MySQL, PostgreSQL).
• Familiarity with Redis and MongoDB NoSQL databases.
• WebSocket and RESTful API design proficiency.
• Experience with Docker and Kubernetes and Git practices.

Responsibilities

• Lead architectural design and core code development of the exchange partner system.
• Implement clearing and settlement logic with a robust rebate engine under high concurrency.
• Utilize Pulsar or Kafka for high-performance message processing of large order flows.
• Design asynchronous clearing and reconciliation for real-time rebate consistency.
• Resolve data consistency issues in distributed environments and optimize DB transactions.
• Monitor performance, optimize API speeds in Gin, and maintain docs.

Skills

Golang

Goroutines & Channels

Gin Framework

Echo Framework

GORM

Microservices

Pulsar

Kafka

MySQL

PostgreSQL

Redis

MongoDB

WebSocket

REST APIs

Docker

Kubernetes

Git

Code Review

Design Patterns

Education

Bachelor's degree

Tools

Go Frameworks

Pulsar

Kafka

MySQL

PostgreSQL

Redis

MongoDB

WebSocket, REST

Docker

Kubernetes

Git

Job description

Responsibilities

• Lead the architectural design and core code development of the exchange partner (agent) system
• Implement clearing and settlement logic, specifically the rebate engine, ensuring zero-error fund transfers under high concurrency
• Utilize Pulsar or Kafka for high-performance message processing of massive transaction order flows
• Design efficient asynchronous clearing and reconciliation mechanisms to ensure real-time rebate consistency
• Resolve data consistency issues in distributed environments and optimize database transaction processing
• Monitor system performance, optimize API response speeds within the Gin framework, and maintain technical documentation

Requirements

• Bachelor's degree or above in Computer Science, Software Engineering, or related fields
• 3+ years of Golang development experience with deep understanding of goroutines, channels, and GC
• Proficiency in Go frameworks such as Gin, Echo, and GORM, and microservices architecture
• Deep understanding of message queue principles (Pulsar, Kafka)
• Expertise in relational database design and optimization (MySQL, PostgreSQL)
• Familiarity with NoSQL databases like Redis and MongoDB
• Knowledge of WebSocket and RESTful API design specifications
• Experience with containerization technologies including Docker and Kubernetes
• Strong coding standards, familiarity with design patterns, and code refactoring abilities
• Proficiency in Git version control and code review practices

Preferred Qualifications

• Experience in cryptocurrency exchange or clearing and settlement development
• Experience optimizing big data, high-concurrency, and low-latency systems
• Good English reading ability for technical documentation