Backend Developer

OneBullEx; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

OneBullEx is building a high-speed cryptocurrency derivatives exchange and seeks an architect-level backend engineer to own the design and core code for the partner (agent) system and settlement engine.

You will tackle distributed systems, message queues, and low-latency APIs using Golang, Gin, Kafka/Pulsar, and modern databases. Collaboration with DevOps and R&D ensures reliability and scalability.

Qualifications

• Bachelor's degree or above in Computer Science, Software Engineering, or related fields.
• 3+ years of Golang development experience with mastery of core features like goroutines, channels, and GC.
• Proficiency in mainstream Go frameworks (Gin, Echo, 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 (Redis, MongoDB).
• Knowledge of WebSocket and RESTful API design specifications.
• Familiarity with containerization technologies (Docker, Kubernetes).
• Strong coding standards, familiarity with design patterns, and code refactoring abilities.
• Proficiency in Git version control and code review practices.

Responsibilities

• Architectural design and core code development of the exchange partner system.
• Lead the R&D of the commission clearing and settlement engine for zero-error fund transfers under high concurrency.
• Utilize Pulsar or Kafka to handle massive transaction order flows and design asynchronous clearing and reconciliation mechanisms.
• Solve data consistency issues in distributed environments and optimize database transaction processing.
• Monitor system performance, optimize API response speeds under the Gin framework, and maintain technical documentation.

Skills

Golang development

Distributed systems

API design

Git

Education

Bachelor's degree in Computer Science or related

Tools

Gin

Echo

GORM

Kafka

Pulsar

Docker

Kubernetes

MySQL

PostgreSQL

Redis

MongoDB

Job description

Responsibilities

• Responsible for the architectural design and core code development of the exchange partner (agent) system
• Lead the R&D of the commission clearing and settlement engine, ensuring zero-error fund transfers under high concurrency
• Utilize Pulsar or Kafka to handle massive transaction order flows and design efficient asynchronous clearing and reconciliation mechanisms
• Solve data consistency issues in distributed environments and optimize database transaction processing
• Monitor system performance, optimize API response speeds under 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 mastery of core features like goroutines, channels, and GC
• Proficiency in mainstream Go frameworks (Gin, Echo, 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 (Redis, MongoDB)
• Knowledge of WebSocket and RESTful API design specifications
• Familiarity with containerization technologies (Docker, 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 in big data, high concurrency, or low-latency system optimization
• Good English reading ability for technical documentation

About the Company

OneBullEx is a next-generation cryptocurrency derivatives exchange built on speed, reliability, and innovation, featuring AI-driven automated trading strategies.