Don Hetzlin
Software Engineer
Nagercoil
Summary
Accomplished .NET Developer with over 8+ years in designing and developing scalable web applications and RESTful APIs using ASP.NET Core, C#, MongoDB, and SQL Server. Expertise in AWS cloud services, microservices architecture, and authentication protocols such as JWT and OAuth2. Proficient in real-time monitoring and integrating AI tools to enhance development workflows. Demonstrated leadership in Agile environments through mentoring and strategic decision-making.
Overview
3
3
Languages
2
2
Certifications
9
9
years of professional experience
Work History
Technology Lead
Infosys
09.2021 - Current
- Developed and maintained microservices using .NET 10, deployed on AWS EKS services.
- Developed an event-driven system leveraging AWS Simple Notification Service (SNS), Simple Queue Service (SQS), and .NET Worker Services. This design decouples microservices, enhances scalability, and improves fault tolerance.
- Implemented server-side pagination to enhance dashboard performance, reducing query latency, and improving responsiveness for large datasets.
- Integrated Change Data Capture (CDC) for efficient data replication and real-time synchronization, ensuring dashboards always reflect the latest updates.
- Optimized queries using MongoDB Atlas Search Index, enabling complex multi-parameter search combinations, with faster execution and improved scalability.
- Migrated client certificates from solution code and Git repositories into AWS Secrets Manager, enhancing security by eliminating hard-coded credentials, and enabling centralized, encrypted secret management.
- Migrated client certificates from solution code and Git repositories into AWS Secrets Manager, strengthening security posture by eliminating hard-coded credentials, and ensuring centralized, encrypted secret management.
- Implemented real-time monitoring and performance optimization, leveraging Dynatrace, Elastic Cloud, and Query insights in Mongo Atlas.
- Accelerated .NET Core API development by integrating Gen AI and Agent AI tools within VS Code.
- Facilitated technical design reviews and architectural discussions, promoting scalable, maintainable, and high-quality solutions.
- Conducted sprint planning and backlog grooming, while performing technical code reviews to ensure adherence to quality standards.
- Troubleshot complex issues impacting systems performance, applying root cause analysis techniques to prevent future occurrences.
- Led cross-functional teams to successfully deliver complex technology projects within agreed timeframes and budgets.
- Increased team productivity through effective collaboration, clear communication, and regular progress updates.
Software Engineer
Thoughtline Technologies
12.2019 - 08.2021
- Supported EDI file exchange pipelines and resolved client issues, enhancing system reliability.
- Automated document generation in multiple formats including Excel, PDF, CSV, and tab-delimited files.
- Automated document generation in Excel, PDF, CSV, and tab-delimited formats, streamlining reporting processes.
- Designed Windows application for auditing monthly billing files, improving accuracy and compliance.
Software Engineer
Calmove Technologies
07.2017 - 12.2019
- Developed Windows applications using VB.NET, integrating Crystal Reports with SQL Server to enhance reporting capabilities.
- Created Windows Services and Background Workers for asynchronous processing tasks.
- Developed Windows applications using VB.NET and integrated Crystal Reports with SQL Server.
- Created Windows Services and Background Workers to enable efficient asynchronous processing of tasks.
- Parsed and processed XML and JSON data to support cross-platform integration.
- Configured Linked Servers to facilitate seamless data exchange across distributed database systems, improving accessibility.
Education
Bachelor of Engineering - Electronics & Communication
DMI Engineering College, Anna University
Tamil Nadu, India01-2014
Higher Secondary - Maths & Biology
SLB Govt Hr Sec School
Nagercoil01-2010
SSLC -
SLB Govt Hr Sec School
Nagercoil01-2008
Skills
Programming & Frameworks: NET Core, ASPNET MVC, Web API, C#, JavaScript, HTML, CSS
Cloud & Deployment: AWS (S3, SQS, SNS, Secret Manager, Event Bus, Load Balancer, CloudWatch), Docker
Databases: SQL Server, MongoDB
Authentication & Security: OAuth20, JWT, OIDC
Microservices architecture
Frontend: Vuejs, ASPNET MVC
Monitoring & Performance: Dynatrace, Elastic Cloud, Mongo Atlas, Rancher
Tools & Methodologies: Git, Agile/Scrum, Gen AI & Agent AI (VS Code Integration)
Accomplishments
- Received two Infosys Rise Awards for excellence in project delivery and leadership
- Awarded Insta Award for rapid problem resolution in high-impact production issues
Certification
Infosys Internal Certification: Vue.js
Timeline
Technology Lead
Infosys
09.2021 - Current
Software Engineer
Thoughtline Technologies
12.2019 - 08.2021
Software Engineer
Calmove Technologies
07.2017 - 12.2019
Higher Secondary - Maths & Biology
SLB Govt Hr Sec School
Bachelor of Engineering - Electronics & Communication
DMI Engineering College, Anna University
SSLC -
SLB Govt Hr Sec School