Sachin Kumar Mallah

Result-driven Software Engineer with 1+ year of professional experience in designing, developing, and deploying robust backend architectures and highly scalable microservices. Proficient in the complete Spring Boot ecosystem, relational/NoSQL databases, and cloud-native engineering. Proven track record in migrating monolithic systems into high-throughput distributed networks, optimizing API latency, and mentoring engineering trainees to accelerate delivery timelines.

Software Engineer - InspironLabs - Bangalore

(2025-08)

• Developed and maintained backend services using Java and Spring Boot for enterprise client applications, serving 50,000+ API requests per day.
• Led the migration of a production application from Java 10 to Java 25, updating deprecated APIs, dependencies, and the Gradle build setup with zero downtime.
• Remediated 25+ security vulnerabilities identified during VAPT audits, including injection risks, weak authentication, and insecure headers, enabling a successful security re-audit.
• Built data pipelines to transform raw data into analytics-ready datasets, processing 1M+ records per day.
• Authored JUnit 5 and Mockito test suites, raising code coverage from 40% to 85% and clearing all SonarQube quality gates.
• Diagnosed and resolved 40+ production and QA bugs, and actively participated in code reviews and Agile sprint delivery.

B.Tech - Computer Science & Engineering - Cambridge Institute of Technology, Ranchi (2023)