TEJASWINI Manchella
Minneapolis,MN
Summary
Software Development Engineer with hands-on experience building and scaling high-impact mobile and backend systems at Amazon. Specialized in Android (Kotlin), iOS (Swift), and Java-based backend services, with a strong focus on architecture modernization, real-time system design, and large-scale migrations. Proven track record of leading zero-downtime migrations, replacing legacy batch workflows with event-driven, just-in-time architectures that improve performance, reliability, and scalability. Experienced in designing resilient AWS-based solutions, collaborating across teams, and delivering production-grade systems serving thousands of daily users.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Software Development Engineer
Amazon
07.2025 - Current
- Owned and contributed to end-to-end development of Amazon’s Driver Relay mobile platform, delivering scalable features across Android (Kotlin), iOS (Swift), and Java-based backend services supporting driver onboarding, authentication, background checks, navigation, and load management.
- Led a critical architecture modernization effort, migrating driver profile management from legacy batch-based preloading to real-time, just-in-time profile creation, eliminating technical debt and improving system scalability and reliability.
- Designed and executed a four-phase, zero-downtime migration strategy using feature flags, monitoring, and rollback mechanisms for a business-critical onboarding system serving thousands of drivers daily.
- Architected a hybrid synchronization model combining daily batch processing with event-driven real-time updates via PeopleBus and AWS services, ensuring strong data consistency across distributed systems.
- Delivered significant performance improvements by reducing driver profile creation latency to sub-2 seconds, maintaining a >99% success rate under 100+ concurrent login scenarios.
- Simplified downstream system behavior by eliminating legacy PENDING profile states and enforcing fully validated ONBOARDED profiles as the authoritative source of truth.
- Designed and implemented resilient People API integrations with retry logic, error handling, eligibility validation, and event-driven workflows using AWS Lambda, SNS, and SQS, enabling near real-time HR data synchronization within 5 minutes.
- Took ownership of legacy infrastructure decommissioning, safely retiring ODOS services including Lambdas, API Gateway, ECS services, VPCs, and CI/CD pipelines while maintaining backward compatibility and operational stability.
Senior Software Engineer
TATA 1MG
09.2021 - 08.2022
- Led the development of a cutting-edge single-page application, actively contributing to its design, implementation, and maintenance within an Agile Scrum environment.
- Participated in 150+ daily stand-ups, sprint reviews, and Kickoffs, leveraging Jira for seamless project management and collaboration.
- Integrated Gradle with CI/CD pipelines (Jenkins and Travis CI), automating the build, test, and deployment processes, resulting in a 30% reduction in release time.
- Successfully integrated third-party services and APIs using REST, JSON, and SOAP, expanding the application's functionality and enhancing data exchange capabilities.
- Demonstrated expertise in Object-Oriented Programming (OOP) concepts, applying design patterns (Singleton, Factory, DAO) to bolster code maintainability by 25%.
- Collaborated with a cross-functional team of 20+ members, fostering effective communication and enhancing project efficiency.
- Orchestrated the end-to-end development of a mission-critical single-page application, aligning with the strategic vision of 1mg.
Software Engineer- Java
LENSKART
01.2019 - 08.2021
- Engaged in all stages of the Software Development Life Cycle (SDLC), actively participating in requirement analysis, design, and implementation within an Agile Methodology framework.
- Developed presentation layers using HTML5, CSS3, and Angular4 router, significantly improving the user interface and navigation experience.
- Utilized Angular 4 to associate HTML elements to models, providing dynamic user validations on the client side, reducing user errors by 20%.
- Demonstrated strong proficiency in Java8 features (Lambda expressions, Streams, filters, optional classes, and default methods), contributing to a 15% increase in code efficiency.
- Applied JUnit and other automated testing frameworks to create, run, and maintain unit tests, ensuring code quality and reliability.
- Developed alarms for APIs to enhance customer service and system health while reducing escalation problems by 35% within a month.
Education
MASTER'S - Computer Science
University of Dayton
Dayton, OH05-2024
Skills
- Languages: Java, Kotlin, SQL, Javascript, Python, C
- Databases: MySQL, PostgreSQL, MongoDB
- Frameworks: Spring MVC, Spring Boot
- Cloud Technologies & DevOps: AWS, Azure, Ant, Maven, Gradle, Jenkins, Bamboo Gulp, Grunt, Webpack, NPM, Bower, Docker, Kubernetes, Azure Cloud, GCP
- IDEs: NetBeans, IntelliJ IDEA J2EE
- Web Technologies: HTML5, CSS3(Sass and less), JavaScript, AJAX, JSON, Bootstrap, jQuery, Angular20/4/8/9/12/14, React JS with Flux, Redux, NET, Handlebar JS, Polymerjs, Backbone JS, NodeJS, Express JS, Hapi JS
- Application Server: Apache Tomcat, Oracle Web Logic, IBM Web Sphere, JBoss
- Version Control Tools: Git, GitHub
- Operating Systems: Windows, Linux
Certification
- Certificate of Data Engineering foundations, LinkedIn
- Certificate Completion of Python Bootcamp, Udemy
Timeline
Software Development Engineer
Amazon
07.2025 - Current
Senior Software Engineer
TATA 1MG
09.2021 - 08.2022
Software Engineer- Java
LENSKART
01.2019 - 08.2021
MASTER'S - Computer Science
University of Dayton