Senior Java Engineer

About Ceffu

Ceffu is a leading institutional-grade digital asset custody platform, offering secure, compliant, and scalable solutions for enterprises, hedge funds, and financial institutions. 

Our mission is to provide cutting-edge security and infrastructure to support the seamless integration of blockchain technology into institutional finance.

Job Responsibilities

• Design, develop, and maintain scalable, highly available, and high-performance backend services using java.

• Take ownership of backend architecture and continuously optimize system scalability, reliability, and performance.

• Participate in requirements analysis, technical design, implementation, testing, deployment, and production support throughout the software development lifecycle.

• Build secure, resilient, and maintainable distributed systems for high-concurrency business workloads.

• Develop and optimize APIs, database models, and system integrations to ensure stability and efficiency.

• Collaborate closely with cross-functional teams to deliver high-quality solutions.

• Conduct code reviews, contribute to technical standards, and drive engineering best practices across the team.

• Monitor production systems, troubleshoot incidents, and proactively identify performance bottlenecks and system risks.

• Lead or contribute to the development and continuous improvement of AI engineering capabilities, tools, and infrastructure.

• Stay current with emerging technologies and share technical knowledge with the team.

Skills & Experience Required

• Bachelor's degree in Computer Science, Software Engineering, or a related field.

• 5+ years of backend development experience with strong proficiency in Java.

• Solid understanding of object-oriented programming, design patterns, clean code principles, and software engineering best practices.

• Hands-on experience with the Spring ecosystem, including Spring Boot and Spring MVC, and persistence frameworks such as MyBatis or MyBatis-Plus.

• Strong experience designing distributed systems with a focus on scalability, reliability, fault tolerance, and high availability.

• Experience with relational databases such as MySQL or PostgreSQL, and caching technologies such as Redis.

• Familiarity with message queues such as Kafka, RabbitMQ, or RocketMQ.

• Experience with microservices architecture, Docker, and Kubernetes.

• Good understanding of RESTful API design and backend security best practices.

• Familiarity with Git, CI/CD pipelines, and automated testing practices.

• Strong analytical, debugging, and problem-solving skills.

• Basic English reading and writing skills.

Preferred Qualifications

• Experience in developing Web3, digital asset custody, cryptocurrency exchange, or blockchain infrastructure systems.

• Experience designing high-throughput, low-latency backend systems.

• Experience applying AI technologies to improve engineering productivity or building AI-powered applications or components.

• Full-stack development experience