Java Engineer • Senior

Who you are

5+ years of experience in backend engineering, particularly with Java — you've designed and implemented scalable systems and have a deep understanding of system architecture and performance optimization. Your expertise in Spring and REST API development allows you to create robust and efficient services that meet high availability and security standards.

You have a solid grasp of blockchain technologies and are familiar with integrating on-chain solutions — your experience with Ethereum and other high-performance chains like Solana and Aptos enables you to build innovative applications that leverage decentralized finance. You are a problem solver at heart, capable of identifying and resolving complex production issues effectively.

Your collaborative spirit shines through as you work closely with cross-functional teams, including product managers and designers, to deliver high-quality features. You thrive in a fast-paced environment and are passionate about contributing to the future of crypto and decentralized applications.

Desirable

Experience with payment processing systems and a strong understanding of traditional finance principles would be a plus. Familiarity with security best practices in software development is also desirable, as you will be responsible for developing secure transaction processing systems.

What you'll do

As a Senior Java Engineer at OKX, you will lead the design and implementation of backend services for the OKX Wallet and payment infrastructure. Your role will involve building and maintaining robust interfaces with the EVM ecosystem and emerging high-performance chains, ensuring seamless integration and functionality.

You will develop secure and efficient transaction processing systems that merge traditional payment reliability with blockchain transparency. Your technical expertise will be crucial in acting as a pillar for the team, guiding the resolution of complex production issues and ensuring the reliability of the services you build.

Collaboration is key in this role, as you will work closely with product and design teams to define requirements and deliver features that enhance user experience. You will also participate in code reviews, mentor junior engineers, and contribute to the overall technical direction of the team.

What we offer

At OKX, we offer a dynamic work environment where innovation is encouraged. You will have the opportunity to work on cutting-edge technologies in the crypto space and contribute to projects that have a significant impact on the future of finance. We provide competitive compensation and benefits, along with opportunities for professional growth and development. Join us in reshaping the future of crypto and decentralized applications.