Devesh Kumar Singh Email & Phone Number

Bengaluru, KA, IN

Bengaluru, Karnataka, India

• Architected and implemented daily class session jobs using JobRunr in Spring Boot to process and update every user’s session in real time, ensuring data accuracy across large-scale operations.
• Led the development of a Tech Disruption Alert System, providing real-time monitoring for live classroom sessions, resulting in immediate identification and resolution of issues, improving session continuity.
• Mitigated security vulnerabilities (Path Traversal, Clickjacking), significantly enhancing platform security and reducing exposure to potential attacks.
• Optimized legacy database interactions, reducing response times by 30%, improving system scalability, and eliminating redundant processes to reduce overhead.
• Designed and delivered both High-Level (HLD) and Low-Level Designs (LLD) for critical features, improving the clarity of system architecture and enabling seamless collaboration across teams.
• Integrated Apache Guacamole Server to enable teachers to securely access browser-based tools, enhancing instructional flexibility.

Bengaluru, Karnataka, India

• Led the development of Paytm’s Lending LMS, focusing on mission-critical systems like transaction settlement and loan cancellation, directly improving transaction success rates.
• Integrated Java Spring Boot microservices, decoupling monolithic components and improving system modularity, resulting in a 20% performance boost.
• Implemented advanced monitoring strategies using Kibana and Grafana, reducing production issue detection times by 40%.
• Developed debugging APIs for business-critical loan scenarios, enabling rapid problem identification and quick resolutions, ensuring minimal business disruption.
• Documented and standardized APIs in Confluence, improving knowledge transfer across teams and accelerating onboarding for new engineers.

Noida, Uttar Pradesh, India

• Designed high-performance modules for the LMS, optimizing system response times and successfully handling large-scale transaction loads.
• Transitioned LMS modules to a microservices-based architecture, enhancing the system’s scalability and adaptability to evolving business requirements.
• Refined PostgreSQL queries to improve database performance by 25%, reducing query latency and ensuring compliance with client-specific performance standards.
• Led performance tuning and troubleshooting for critical client environments, resolving system bottlenecks and improving overall reliability.

Noida, India

• Contributed to the full SDLC for LMS modules, delivering high-quality, performant code in a fast-paced, deadline-driven environment.
• Refactored legacy code using SonarQube, improving code maintainability, reducing technical debt, and enhancing system performance by 15%.
• Resolved critical production issues through effective Root Cause Analysis (RCA), ensuring quick recovery and uninterrupted service to clients.
• Delivered monthly service pack updates, ensuring zero downtime and smooth user experiences by rigorously testing and validating changes.

Be, Computer Engineering

Xii Std, Pcm(Non-Medical)

X Std