Senior Java Back-End Engineer (Remote)

SUMMARY:
Our client, a boutique software engineering firm supporting fintech projects globally, is seeking a Senior Back-End Software Engineer to architect, develop, and optimize high-performance back-end systems. This is a fully remote, work-from-home position.

POSITION INFO:
As a Senior Engineer, you will take ownership of critical back-end services, ensuring that they are scalable, secure, and efficient. You will shape technical strategy, mentor Engineers, and collaborate across teams to build resilient, innovative solutions. Your expertise in back-end development, cloud technologies, and distributed systems will help deliver seamless experiences to users while maintaining engineering excellence.

Key Responsibilities:

• Back-end Development: Design, develop, and optimize scalable back-end applications using Java and Spring Boot.
• Database Operations: Optimize relational and NoSQL databases (Cassandra and PostgreSQL) for efficient data storage and retrieval.
• API Development & Security: Architect and enhance RESTful APIs (OpenAPI) and GraphQL, implementing OAuth 2.0, JWT, and API Gateway security.
• Microservices & Event-Driven Architecture: Build distributed back-end services with Kafka or RabbitMQ in a microservices architecture.
• Cloud & Containerization: Lead deployment using Docker, Kubernetes, and AWS, automating infrastructure provisioning.
• Development Practices & Tooling: Enforce best practices for Git, code analysis (SonarCloud and SonarLint), CI/CD pipelines, and automated testing (Postman, Bruno and JMeter).
• Performance & Security: Implement caching, query optimization, load balancing, and secure authentication workflows (Spring Security, OAuth, and JWT).
• Software Design: Architect and document scalable system designs, including component, sequence, and workflow diagrams.
• Testing & QA: Develop unit and integration tests (JUnit, Mockito) and lead performance testing initiatives.

• 5+ years of back-end engineering experience; consulting or customer-facing experience is a plus.
• Preferably 7+ years solving complex challenges in distributed systems, cloud, or microservices architectures.
• Bachelor’s Degree in Computer Science, Software Engineering, or equivalent experience.

• Software Developers (Back-End, Front-End, Full Stack)
• Mobile Developers
• Business & Systems Analysts
• BI & SQL Experts
• UI/UX Professionals
• Data Scientists & Data Analysts
• Big Data Professionals
• Cloud Experts
• Infrastructure Specialists
• DevOps & SecOps Engineers
• Cybersecurity Specialists
• SEO / Digital Designers