Java Engineer - Contractor

BNB Chain; Earth (TX); On-site; USD 140,000 - 220,000; Full time

Job summary

BNB Chain is seeking an experienced Java backend engineer to independently investigate and design complex systems, optimize performance, and translate business requirements into scalable applications. You will design, build, and maintain efficient Java code, review for quality and security, and ensure responsiveness of services.

The role requires deep knowledge of core Java, Spring frameworks, and microservice architectures, with experience in Reactor and modern distributed systems.

Qualifications

• 8+ years of Java backend development experience.
• Understand middleware principles and patterns.
• Familiar with Redis, MongoDB, MySQL, Kafka, XXL-Job, K8s, SpringBoot, LocalCache, Prometheus.
• Proficient in Java, server-side tech, and Spring ecosystems.

Responsibilities

• Investigate and design complex systems.
• Optimize performance and ensure system stability.
• Translate business requirements into functional applications.
• Design, build, and maintain efficient Java code.

Skills

Core Java

Spring Frameworks

RESTful Services

Microservices

Multithreading

Distributed Systems

Event Processing

Reactor

Tools

Redis

MongoDB

MySQL

Kafka

XXL-Job

Kubernetes (K8s)

SpringBoot

LocalCache

Prometheus

Job description

Job Description

• Independently investigate and design relatively complex systems
• Optimize system performance and ensure the stability of system services
• Translate business requirements and use cases into functional applications
• Design, build, and maintain efficient, reusable, and reliable Java code
• Review, test, and verify code for adherence to quality and security standards
• Ensure the best possible performance, quality, and responsiveness of the applications
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality and organization

Qualifications

• 8+ years of Online troubleshooting experience with full lifecycle of project development for Java applications from similar industry
• Understand the underlying principles of commonly used middleware
• Familiar with Redis/MongoDB/MySQL/Kafka/xxl-job/K8s/SpringBoot/localCache/Prometheus
• Strong skills in core Java, server-side Java technologies, and Spring frameworks
• Extensive experience in software design, architecture, development integration
• Solid knowledge of event processing models, multi-threading, enterprise integration pattern, Web Service and REST
• Experience in Reactor and Microservice would be an added value
• Basic or Fluent English level