Full-Stack Software Engineer with AWS Expertise

BALA NAGA SAI CHILAKALA

Irving, Texas ·+1-940-***-**** · **********@*****.***

SUMMARY

Software Developer with Bachelor’s degree and 4+ years experience in software engineering and test automation. Expert in Java, Selenium WebDriver, JavaScript with comprehensive knowledge of RESTful APIs, test automation frameworks, and Java/Spring/SpringBoot development. Proven problem-solving and critical-thinking skills with commitment to delivering high-quality code and dedication to software craftsmanship. Experienced in Git version control, CI/CD integration, and SQL/NoSQL databases with strong collaborative approach to software development lifecycle from design through deployment. EDUCATION

Master of Science in Information Systems and Technology, University of North Texas May 2023

• Related Discipline: Software Engineering, Computer Science Fundamentals, Critical-thinking GPA: 3.3/4.0 Bachelor of Technology in Electrical Science & Engineering, GITAM University May 2020

• Related Field: Software Development, Programming Languages, Problem-solving GPA: 3.5/4.0 WORK EXPERIENCE

Software Engineer, LPL Financial Nov 2024 - Present Irving, TX

• Developed enterprise web applications using Angular, TypeScript, JavaScript for front-end and Java for back-end services, processing 200K+ daily user interactions with modern full-stack architecture

• Designed and implemented RESTful APIs with Java Spring Boot, integrating with Oracle databases and Redis caching, while building corresponding Angular services for seamless front-end consumption

• Deployed full-stack applications on AWS using Docker and Kubernetes, leveraging EC2 for compute, RDS for managed databases, and S3 for static asset hosting with CloudFront CDN

• Proficient in Python scripting for automation tasks, build processes, and data processing pipelines supporting full-stack development workflows

• Worked in Agile/Scrum environment with 2-week sprints, actively participating in sprint planning, estimation sessions, daily stand-ups, and retrospectives to ensure iterative delivery

• Applied excellent problem-solving skills to debug complex issues spanning front-end Angular code, back-end Java services, and AWS infrastructure, working collaboratively in team setting Senior Software Engineer, Cognizant/ Verizon Communications August 2023 - October 2024 Irving, TX

• Worked on a real-time data processing pipeline where Apache Flink was used to process streaming event data, perform transformations, and enrich records before persisting them for downstream analytics use cases

• Used Apache Druid as an OLAP datastore to support fast aggregation and time-based queries on high-volume event data, enabling analysts and internal applications to query metrics with low latency

• Implemented data persistence using Apache Cassandra to store processed records and reference data, designing partition keys and clustering columns to support efficient read and write patterns

• Assisted in monitoring and operational visibility by configuring dashboards in Grafana to track system health metrics such as job latency, throughput, and error rates across streaming and backend components

• Used Prometheus to collect application and infrastructure metrics, helping identify performance bottlenecks and memory issues in Flink jobs and backend services during peak data loads

• Designed and executed Selenium test scripts using Java to validate dashboards, reports, and workflows, ensuring data consistency after backend processing

• Investigated data delays and job failures by analyzing Flink logs, Prometheus metrics, and Grafana dashboards, and worked with senior engineers to apply configuration fixes and redeploy jobs

• Supported production issue resolution related to data inconsistencies by validating records across Cassandra and Druid, ensuring data accuracy between real-time and analytical systems

• Collaborated with platform and DevOps teams during deployments to verify that Flink jobs and monitoring dashboards were properly configured in higher environments

BackEnd Developer Intern, A3TechSolutions May 2022 - July 2022 Lewisville, TX

• Built full-stack features using Angular for UI and Java Spring Boot for RESTful APIs, implementing clean and maintainable code following web development best practices

• Participated in Agile/Scrum ceremonies including daily stand-ups and sprint reviews, gaining hands-on experience with Scrum method- ology and team collaboration

Graduate Teaching Assistant, University of North Texas December 2021 - May 2023 Denton, TX

• Mentored 100+ students in full-stack development including Angular, TypeScript, JavaScript, Java, and Python, covering web development principles and best practices

• Facilitated Agile learning environment with sprint-based project cycles, code reviews, and collaborative team exercises mirroring industry Scrum practices

Java Software Developer, ValueMomentum June 2020 - July 2021 Hyderabad, India

• Developed full-stack insurance platform using Java back-end services with JavaScript/Angular front-end, serving 50K+ users with responsive web interfaces

• Implemented RESTful APIs in Java and integrated with front-end applications, ensuring efficient data flow and adherence to web develop- ment principles

• Worked in Agile/Scrum team with defined roles, participating in sprint ceremonies and delivering features iteratively with focus on clean, efficient code

• Utilized Python scripts for automation, testing, and data processing tasks, demonstrating versatility across multiple programming languages PROJECTS

Hybrid Test Automation Framework (Web + Mobile + API)

• Architected comprehensive automation framework using Selenium WebDriver, Appium, and REST Assured with Java; implemented TestNG for test orchestration, Cucumber for BDD, Page Object Model design pattern, and data-driven testing; integrated with Jenkins CI/CD for automated execution with Extent Reports Tech Stack: Selenium WebDriver, Appium, REST Assured, Java, TestNG, Cucumber, Jenkins, Maven API Testing Framework with REST Assured

• Built comprehensive API automation framework using REST Assured and Java with TestNG; implemented authentication testing (OAuth, JWT), JSON/XML schema validation, response time validation, and integration with Postman collections for collaborative API testing

Tech Stack: REST Assured, Java, TestNG, Postman, JSON/XML, OAuth TECHNICAL SKILLS

Programming Languages Java (Expert), JavaScript, TypeScript, Python, SQL Front-End Development Angular, TypeScript, JavaScript (ES6+), HTML5, CSS3, RxJS, Angular Material Back-End Development Java, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, RESTful APIs Cloud Services AWS (EC2, Lambda, S3, RDS, API Gateway, CloudWatch), Cloud Integration Databases PostgreSQL, MySQL, MongoDB, Oracle, Redis DevOps & Tools Docker, Kubernetes, Jenkins, Git, Maven, Gradle, npm Streaming & Monitoring Apache Flink, Grafana, Prometheus, Performance Monitoring Web Development RESTful API Development, Microservices, Single Page Applications (SPA) Testing JUnit, Mockito, Jasmine, Karma, Jest, Unit Testing, Integration Testing Tools & Technologies Maven, Gradle, IntelliJ IDEA, Eclipse, JIRA, Confluence, Docker

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