Senior Full-Stack Developer React, Java, Cloud, Microservices

RAHUL KOLLA

Full Stack Developer

**************@*****.*** LinkedIn: linkedin.com/in/rahul-4334 732-***-****

PROFESSIONAL SUMMARY

Results-driven Full Stack Developer with 5+ years of experience designing, building, and deploying scalable web applications across healthcare, financial services, and e-commerce domains. Proficient in end-to-end development using React.js, Java Spring Boot, and RESTful microservices, with hands-on expertise in cloud-native infrastructure including OpenShift Container Platform (OCP), AWS, and Azure. Experienced in real-time event-driven systems using Apache Kafka, NoSQL databases (MongoDB), and data analytics platforms (Azure Databricks). Adept at modernizing legacy infrastructure, integrating third-party systems, and delivering high-quality solutions in fast-paced agile environments with a strong focus on CI/CD, HIPAA compliance, and cross-functional collaboration.

TECHNICAL SKILLS

Frontend:

React.js, JavaScript (ES6+), HTML5, CSS3, Redux, GraphQL

Backend:

Java, Spring Boot, Microservices, RESTful APIs, Python, Groovy, Hibernate

Databases:

MongoDB, SQL Server, MySQL, PostgreSQL, Oracle DB, DB2

Cloud & DevOps:

AWS (EC2, S3, Lambda), Azure DevOps, Azure Databricks, OpenShift (OCP), Docker, Kubernetes, Jenkins

Messaging:

Apache Kafka, Event-Driven Architecture

Monitoring & BI:

Splunk, AppDynamics, Power BI, SSRS

Tools & Testing:

Git, GitHub, Bitbucket, Jira, SonarQube, JEST, ServiceNow, Pega

Methodologies:

Agile/Scrum, CI/CD, DevOps, SDLC, HIPAA Compliance

WORK EXPERIENCE

Senior Full Stack Developer • Client: Molina Healthcare

Infosys Limited August 2024 – Present

Healthcare Providers Services Management Platform — Medicare, Medicaid & Marketplace

• Built and maintained React.js frontend components for claims processing, patient eligibility, referrals, and authorization management, improving provider workflow efficiency.

• Developed backend enhancements using Java, Spring Boot, and SQL Server, resolving ServiceNow tickets and ensuring HIPAA-compliant data handling across multiple lines of business.

• Integrated UMK2 and MCG systems into Pega to automate service request approvals, reducing manual intervention by 30%.

• Implemented CI/CD pipelines with Azure DevOps and Git/GitHub, streamlining multi-environment deployments across vendors.

• Leveraged Azure Databricks for large-scale data processing and analytics, enabling efficient data transformation pipelines to support reporting and business insights.

• Utilized MongoDB for flexible, document-based data storage alongside SQL Server for structured data requirements.

• Utilized Splunk, AppDynamics, Power BI, and SSRS for performance monitoring and data-driven decision support.

Full Stack Developer • Client: Vanguard

Infosys Limited November 2022 – August 2024

Managed File Transfer System — Event-Driven, Cloud-Native Architecture

• Architected and developed a robust, highly available file transfer platform using Java, Spring Boot microservices, and Apache Kafka for near-real-time event-driven processing.

• Led migration of legacy VM-based workloads to OpenShift Container Platform (OCP), improving deployment consistency and reducing infrastructure overhead.

• Leveraged MongoDB for storing file transfer metadata and audit logs, enabling fast, flexible querying across large datasets.

• Designed and implemented multi-threaded parallel file pickup/delivery workflows, automating Linux-based batch jobs and shell scripts.

• Maintained code quality with SonarQube and enforced standards through peer code reviews and test-driven development practices.

• Collaborated with cross-functional teams to translate technical specifications into production-ready code within agile sprint cycles.

Frontend / Full Stack Developer • Client: Wayfair

Infosys Limited September 2021 – November 2022

Scam Detection & Returns Fraud Prevention Platform

• Developed a React.js Single Page Application (SPA) for scam detection, implementing complex UI flows with Redux for state management and GraphQL for efficient API queries.

• Built reusable React components using NPM packages, improving development velocity and UI consistency across the platform.

• Integrated Apache Kafka for real-time streaming and fraud signal processing; implemented custom Kafka encoders for proprietary data formats.

• Deployed and managed application services on AWS (EC2, S3, Lambda), supporting scalable and reliable cloud infrastructure for the fraud detection platform.

• Designed Spring Boot REST APIs and back-end services to support the scam friction system, exchanging data via JSON and XML.

• Wrote comprehensive unit tests using JEST, maintaining near-zero UI defect rate in production.

Junior Java Developer

FX ABS Software Solutions May 2019 – December 2019

• Developed web applications using Java/Java EE, Spring Boot, Hibernate, and RESTful APIs, contributing to multiple client projects.

• Built responsive frontend UIs with HTML, CSS, and JavaScript; validated user input using client-side and server-side logic.

• Wrote PL/SQL stored procedures and triggers for Oracle Database; maintained code versioning via GitHub.

• Participated in daily agile standups, requirements gathering, design documentation, and QA testing cycles.

EDUCATION

Master of Science in Information Systems 2021 Northwest Missouri State University, Maryville, MO, USA

Bachelor of Technology in Civil Engineering 2019 R.V.R & J.C College of Engineering, Guntur, India

KEY HIGHLIGHTS

• 5+ years of IT experience with expertise in full stack development across healthcare, financial services, and e-commerce sectors.

• Proven ability to work in geographically distributed teams and deliver in fast-paced agile environments.

• Strong communicator with experience in client-facing roles, cross-functional collaboration, and stakeholder presentations.

• Quick learner with a track record of onboarding new technologies (Kafka, Kubernetes, GraphQL) rapidly within project contexts.

Contact this candidate