Java Developer Senior

KETAN CHAVDA

*********@*******.*** +1-647-***-****

PROFESSIONAL SUMMARY

Senior Java Developer with over 12 years of experience in designing, developing, and deploying enterprise-level applications across banking, healthcare, and public sector industries. Proven expertise in building scalable, secure, and robust Java-based and full-stack applications. Adept at integrating business logic into middleware layers, creating responsive front-end solutions, and developing end-to-end applications. Specialized in working within highly regulated sectors, delivering compliant and secure systems.

KEY-SKILLS

LANGUAGES: Java, J2EE, SQL, Python, JavaScript, TypeScript

FRAMEWORKS: Spring, Spring Boot, Hibernate, React.js, Angular, Node.js

ARCHITECTURE: Microservices, SOA, RESTful Services, Event-driven Architecture

DATABASES: Oracle, MySQL, PostgreSQL, MongoDB

CLOUD TECHNOLOGIES: AWS, Azure, Google Cloud, Docker, Kubernetes

VERSION CONTROL & CI/CD: Git, Jenkins, Maven, Gradle

INDUSTRY EXPERTISE: Core Banking, Payment Systems, Business Middleware, Front-end Development

OTHER TOOLS: Apache Kafka, RabbitMQ, Elasticsearch, Splunk, JUnit, Mockito, SonarQube

PROFESSIONAL EXPERIENCE

Senior Java Developer (Full Stack & Middleware)

TD BANK Toronto, ON

July 2022 – Present

Backend and Middleware:

Architected and developed a microservices-based core banking system, enhancing system performance by 30% and reducing downtime by 15%. Built a robust middleware layer to handle complex business logic for transaction processing, including routing, validation, and logging.

Business Middleware Development:

Designed and integrated middleware components to support multiple banking products like loan processing, credit card services, and risk management.

Developed business rule engines to automate decision-making processes in loan approval workflows, reducing processing time by 25%.

Ensured seamless integration with external financial systems through RESTful and SOAP-based services, handling message transformation and service orchestration.

Front-End Development:

Collaborated with UI/UX teams to create responsive user interfaces for banking portals using React.js and Angular. Developed features for customer onboarding, account management, and real-time transaction tracking.

Built reusable front-end components and integrated them with back-end services via REST APIs, ensuring a smooth and secure flow of data between client and server.

Optimized web application performance, reducing load times by 20% and enhancing user experience through the implementation of lazy loading and code-splitting strategies.

Cloud & DevOps Integration:

Worked closely with DevOps and Cloud teams to deploy applications on AWS, using EC2, S3, Lambda, and RDS for cloud optimization. Introduced containerization with Docker and Kubernetes for managing microservices and improving application scalability.

Payment Processing Systems:

Migrated a legacy payment system to a cloud-native architecture using Spring Boot and Kubernetes, enabling real-time payment processing and reducing transaction failures by 30%.

API Integration:

Integrated third-party APIs for credit card processing and fraud detection, utilizing OAuth 2.0 and JWT for secure authentication.

Enhanced the bank’s mobile app experience by developing RESTful APIs for real-time account balance checks, fund transfers, and bill payments, improving user satisfaction by 15%.

Team Leadership:

Led a team of 5 developers to deliver mission-critical projects while maintaining code quality through code reviews, automated testing, and continuous integration pipelines using Jenkins.

Key Achievements:

Improved transaction processing times by 40% by implementing asynchronous processing with Kafka and refactoring middleware services.

Enhanced front-end performance, reducing customer complaint tickets by 15%.

Streamlined API communication between front-end and middleware layers, reducing request processing times by 20%.

Senior Java Developer

MyHealth Centre Toronto, ON

Jan 2019 – May 2022

Developed secure and scalable healthcare applications, including Electronic Health Record (EHR) systems, in compliance with HIPAA and healthcare regulations.

Implemented RESTful APIs to facilitate seamless integration between healthcare systems and external applications.

Worked on real-time patient monitoring systems, leveraging Java, Spring Boot, and Kafka for real-time data processing.

Contributed to the integration of FHIR (Fast Healthcare Interoperability Resources) and HL7 standards for interoperability between healthcare systems.

KEY ACHIEVEMENTS:

Successfully led the migration of a legacy healthcare system to a cloud-based platform on AWS, improving scalability and reducing infrastructure costs by 20%.

Played a pivotal role in modernizing the my MyHealth’s patient portal, resulting in a 20% increase in patient engagement.

Full Stack Developer

Ministry of Governance and Consumer Services (ServiceOntario) Toronto, ON

Jan 2018 – Dec 2018

Designed and developed full-stack applications for ServiceOntario, including citizen-facing services such as driver's license renewal, health card management, and vehicle registration.

Worked with front-end technologies (React.js, Angular) and back-end (Java, Spring Boot) to develop responsive, user-friendly interfaces that improved user satisfaction and reduced processing times by 20%.

Integrated various government systems and databases to enable seamless real-time data sharing and retrieval for services such as vital records and public registries.

Ensured compliance with government security standards, secure API communication, and encryption for sensitive citizen data.

Worked closely with stakeholders and end-users to gather requirements and iteratively deliver enhancements based on user feedback, ensuring the applications met both technical and regulatory requirements.

KEY ACHIEVEMENTS:

Developed a fully responsive online service for vehicle registration renewals, reducing in-person visits by 30%.

Led a project to integrate a document management system for digital records, improving processing efficiency for government clerks by 25%.

Java Developer

Viacom18 Media Pvt Ltd, Mumbai, India

Jan 2011 - Sep 2017

Developed and maintained high-traffic media streaming applications, ensuring high availability, low latency, and scalability for millions of users.

Collaborated with the product and media teams to build a robust content management system (CMS) that supported multimedia content ingestion, processing, and delivery across multiple platforms.

Integrated DRM (Digital Rights Management) systems and implemented security protocols to protect media content and comply with copyright regulations.

Enhanced video delivery performance by implementing content caching strategies and integrating with CDNs (Content Delivery Networks) to minimize load on backend servers and improve user experience.

Worked on API integration to manage metadata, user profiles, and recommendation engines, ensuring seamless integration between the platform and third-party services.

Participated in optimizing media encoding pipelines for live streaming and VOD (Video on Demand) services, reducing processing times by 20%.

KEY ACHIEVEMENTS:

Improved video streaming quality by 30% through optimizations in the media encoding pipeline and real-time performance monitoring.

Played a pivotal role in scaling the streaming platform to handle large concurrent user traffic during live events, achieving over 99.9% uptime.

Developed key features that enhanced viewer engagement, including interactive polls and live chat integration for streaming events.

EDUCATION

Bachelor of Engineering in Computer Science

Amravati University, INDIA

PROJECTS

Real-Time Fraud Detection System (Banking)

Developed a real-time fraud detection system that flagged suspicious transactions using Java, Kafka, and machine learning models. The system reduced potential fraud incidents by 35%.

Patient Monitoring System (Healthcare)

Designed and developed a real-time patient monitoring system that processes large-scale medical data from IoT devices, improving patient care through real-time analytics.

ServiceOntario Online Portal (Public Sector)

Designed and developed a fully responsive online portal for vehicle registration and health card renewals, reducing in-person service bottlenecks and improving user satisfaction.

TECHNICAL ENVIRONMENT

Java, Spring Boot, Microservices, Hibernate, JPA, Oracle, MongoDB, Kafka, Jenkins, Docker, Kubernetes, AWS, REST, SOAP, JUnit, Mockito, Maven, Git, React.js, Angular, Node.js, FHIR, HL7, Azure

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