Full Stack Developer Software Engineer

Keennary Pungyera 321-***-**** **********@*****.*** www.linkedin.com/in/keennary

Senior Software Engineer, Full Stack Developer, Senior Back End Engineer SUMMARY

Experienced Software Engineer with a strong track record in delivering full-stack applications, cloud-native architecture, and data integration solutions. Proficient in .NET Core, Java, Python, Azure, and microservices, with expertise in building scalable APIs and optimizing ETL (Extract, Transform, Load) workflows. Known for leading cross- functional teams and driving performance improvements across systems and applications. Focused on software architecture, cloud infrastructure, and delivering impactful, high-quality engineering solutions. AREAS OF EXPERTISE

Programming Languages: Java, ABAP, VB.NET, C++, C#, Python DevOps & Tools: AZURE DevOps, TFS, Tortoise SVN, GitHub, Bitbucket, GitLab, AWS, GCP ERP: SAP R/3 Version 4.6c/4.7EE/ECC 5.0/6.0 IDES

Database Packages: SQL Server, PostgreSQL, Oracle, AZURE Data layer, Teradata Web Technologies: ASP.NET, Web Services, WCF, MVC 4/5, WinForms, Microsoft Azure, MVVM, Tableau, Power BI, SSRS

Frontend: Angular (up to v19), React, Blazor, Knockout, JavaScript, jQuery ETL Tools: Talend 6.5, Talend 7.3, Autosys, SSIS

Cloud: Microsoft Azure (DevOps, Pipelines, Data Layer), AWS, AKS, Docker, Kubernetes Concepts: AWS, Cloud development, Networking, Multi-Threading and Synchronization, Web Service, MS Visio, Rabbit MQ, REST API, SPRING, OAuth 2.0, Microservices, Parallel processing, OOA/OOD, JAXB, Pub-Sub API, Kafka, continuous integration, Containerization, Agile Development, Object-Oriented Programming, MAVEN PROFESSIONAL EXPERIENCE

Senior Full Stack Developer

OSG Connect • Carlstadt, NJ (Contractor) June 2024 to Present

• Spearheaded the construction of data pipelines integrating hospital billing and visitation records, accelerating data retrieval speeds by 60% and boosting reporting efficiency for hospital administrators.

• Designed and optimized complex data extraction, transformation, and loading (ETL) workflows, including custom XML parsing and automated document generation for streamlined reporting.

• Developed scalable web applications and RESTful services using Java with Maven and .NET technologies, with backend integration and data management in MS SQL and PostgreSQL.

• Engineered complex data schemas using advanced modeling techniques in PostgreSQL, structuring datasets to accelerate report generation by 60% and improving decision-making across product and finance.

• Built and deployed cloud-native applications on Azure, implementing infrastructure-as-code for automated provisioning and improved scalability.

Senior Software Engineer

CITI Group • Tampa, FL (Remote) July 2018 to May 2024

• Architected and implemented an AI chatbot system using microservices on AWS and AKS, supporting over 1 million monthly user interactions with 99.9% uptime and 40% faster response times. Integrated live person chat messaging, improving customer satisfaction by 25%. Developed a reporting module in Angular 13, increasing data visibility and reducing manual reporting time by 60%.

• Crafted a blueprint and developed an autonomous FDR file load system to manage large volumes of data and generate specific outputs efficiently, daily, weekly, monthly, and annually. The system processed data from multiple business lines with an automated error-handling system. Implemented CI/CD (Continuous Integration / Continuous Deployment) pipelines using Azure DevOps, reducing deployment time by 40% and enhancing release frequency.

• Developed CMS system Analog Scorecard Project, which provides accurate and reliable daily workforce reports to fifteen management groups. Designed and developed a React-based view engine.

• Constructed and operationalized a dependable system, the Contact Center Dashboard system, which covers 53 ETL and ELT subprojects in C#, JAVA, Python, AWS, and AZURE. Led the implementation of the reporting module in Angular 19 and Tableau.

• Oversaw the design, development, testing, and ongoing maintenance of the Bank Card automated system to process daily, weekly, monthly, and yearly files with a self-learning mechanism.

• Led the migration of legacy applications to Azure, leveraging Azure Pipelines for automated build and deployment processes. Prepared technical documentation with technical oversight for all the migrated systems.

• Technologies: Talend 6.3/7.3, Autosys, Tableau, .Net code, .Net core, SQL, Oracle, Teradata, Unix, Kubernetes, Kafka, Big data, Zookeeper, Python, Telerik tools, AZURE DevOps, AZURE data layer, JAVA Spring boot, IntelliJ, Maven, Bitbucket, Dockers, GitLab

Senior Software Engineer

Florida R&D Associates • Debary, FL May 2017 to June 2018

• Prioritize trouble tickets, provide estimations, and communicate status/progress to clients (Verizon).

• Conducted code reviews, analyzed issues identified by static analysis tools, and collaborated with the DevOps team to troubleshoot deployment issues, if any.

• Participated in release upgrades to production. Developed a Big Data reporting tool for Verizon utilizing Elasticsearch, Telerik Kendo UI, and Java, with Maven for build automation.

• Developed and integrated RRC parser for 3 GPP messages.

• Developed and maintained LTE, GSM, and WCDMA log records parser for 3GPP messages. Software Engineer III

Agerpoint LLC• New Smyrna Beach, FL June 2016 to April 2017

• Oversee and direct the timely, effective, and quality software delivery into production.

• Collaborate with teammates, developers, QA, operations, etc., to build and deliver software into production.

• Developed Java REST API with Maven build for the Yield Tracker Android mobile app. Designed, developed, and maintained the Ager Metrix website in .NET MVC4. Developed Yield Tracker and enhanced Grove Tracker modules in MVC-5

Software Engineer III

OnSolve LLC (ECN) Ormond Beach, FL Oct 2013 to June 2016

• Developed and tested an IPAWS weather alert system based on business requirements and industry best practices. Conducted unit testing and integration testing for functionality and limits. Assisted in training the sales team. Enhanced the in-house portal. Resolved defects from the existing products, such as the CODERED and Weather Warning systems. Provided onsite and offline support to the operations department.

• Oversee all stages of the software development lifecycle for the Resource Library enhancement with the AZURE data layer used in CODERED.

• Initiated innovations to improve systems with the Text to Speech feature and embedded fingerprint reading-to- face recognition tools in IPAWS and CODERED systems.

• Maintained and enhanced marketing website in PHP. Developed Confluence in SharePoint 2010. Research Assistant

Embry-Riddle Aeronautical University• Daytona Beach, FL Sep- 2012 to Dec - 2013 NextGen Task O-Aircraft to SWIM – Research Assistant (May 2013 – Oct 2013) The NextGen worked as a research assistant in priority/preemption issues and downlink/uplink Technical Research projects. Developed and documented publisher-subscriber web services and Java Messaging Services for the validation test plan. Developed ASDI, Binary, and XML Parser using RabbitMQ and JAXB. Developed technical documentation, including test plans. IGNITE, System Analyst (Jan 2013 – Apr 2013) Ignite is a website that seamlessly works with other Embry-Riddle Aeronautical University websites.

• I worked as a System Analyst on the IGNITE website.

• Elicited the requirements from stakeholders and prepared an elicitation report.

• Modeled requirements and specified them in the analysis model.

• Prepared System requirement specification document and other technical specification documents

• Prepared system risk analysis reports and provided necessary postmortem analysis reports. Air Route Planner, Development Manager (Sep 2012 - Dec 2012)

• Developed Air Route Planner (ARP) with a network of USA Airports. Developed a user interface to query and receive information to open/cancel routes and calculate a route that costs less in a short travel time, with exception handling to display errors.

• Designed, developed, and performed quality control tests with necessary technical requirements in JAVA

(ANDROID Ver 4.0: Ice Cream Sandwich)

EDUCATION

Master of Science in Software Engineering – Embry-Riddle Aeronautical University, FL, USA Master of Computer Applications – Gujarat University, India Bachelor of Science – South Gujarat University, India

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