Huzaifa A.

I help beginners, students, and working professionals learn Java, Python, C#, Go, JavaScript, backend development, and SQL through hands-on, real-world projects. In parallel, I work as a Java Application Support Engineer (L2/L3) on a large-scale ERP system, where I handle production issues, debug complex problems, and ensure system stability in live environments. What I Can Help With Development & Teaching: • Java, OOP, Spring Boot, REST APIs • Backend development and system design fundamentals • SQL (MySQL, PostgreSQL) • Data Structures and interview preparation Java Support / Production Support / Technical Support: • L2/L3 application support for Java-based systems • Production issue debugging (logs, APIs, database) • Root Cause Analysis (RCA) and bug fixing • Performance issue identification and optimization • Incident and ticket handling with SLA adherence • Microservices debugging and API troubleshooting • Log analysis (Splunk, Kibana, New Relic) • SQL query optimization and database troubleshooting Why Clients Choose Me: • 100% Job Success | 700+ hours on Upwork • Hands-on experience with large-scale production systems • Strong debugging and analytical skills • Clear, structured, and practical approach to problem-solving • Reliable communication and timely delivery Availability: Available 30+ hours per week.