Email: [email protected] | Location: Bloomington, IL | LinkedIn: in/dave-seng
Experienced Software Engineer with over 20 years in designing and implementing modern, scalable solutions using .NET, Azure, and microservices. Skilled in leading teams, modernizing legacy systems, and optimizing CI/CD pipelines. Certified Azure Developer and AI Engineer with a proven track record in integration platforms, application modernization, and cloud-based solutions.
3Cloud Solutions | May 2023 – Present | 2 yrs
Promoted from Senior Application Engineer
- Spearhead architecture and development of cloud-native solutions using C#, Azure, and modern integration tools.
- Designed C# Durable Functions for integration workflows, including PDF splitting, invoice extraction (Azure Document Intelligence), Excel merging, and triggers (Timer, Event Grid, HTTP).
- Led an offshore development team, conducted requirement discovery, and facilitated design reviews.
- Built and prioritized a backlog, collaborating with PMs to define iterations.
- Implemented CI/CD pipelines for automated APIM imports and resolved infrastructure challenges.
- Triaged and routed UAT feedback to ensure quality delivery.
- Converted stored procedures to API endpoints, enhancing scalability; supported code reviews and PRs.
- Automated OpenAPI spec imports to APIM via CI/CD pipelines.
- Deployed a Teams-integrated chatbot using Azure AI Search and Vector Database, enabling sales teams to query SOW contracts.
- Built an ASP.NET MVC and HTMX-based admin UI; resolved UAT issues.
3Cloud Solutions (via Polaris Solutions acquisition) | Nov 2021 – Apr 2023 | 1 yr 4 mos
- Continued key engagements post-acquisition, delivering robust .NET solutions.
Polaris Solutions | Oct 2010 – Oct 2021 | 11 yrs 2 mos
- Implemented a microservices application on Kubernetes in Azure, leveraging Kafka, MongoDB, Docker, Grafana, and OpenTelemetry. Debugged issues in an IAC Kustomize repository
- Migrated from .NET 5.0 to 6.0 and transitioned from GitHub to GitLab, debugging CI/CD issues.
- Conducted and provided feedback on many pull requests.
- Maintained a portability layer syncing greenfield apps with a legacy DB/2 system.
- Enhanced cross-cutting concerns using git submodules and shifted from NuGet to APIOps contracts.
- Integrated an in-house CMS via a new API with IdentityServer authentication.
- Modernized a .NET Web Forms app to .NET 4.8, adopting MS Dependency Injection and increased unit test coverage.
- Enhanced an Angular app for construction team scheduling, improving usability and functionality.
- Converted a health insurance portal from Classic ASP to ASP.NET MVC within a Scrum team.
- Implemented a large SOA architecture with WCF, SQL Server, and an in-house CMS.
- Built an ETL tool to migrate data from iSeries DB/2 to SQL Server; managed TFS locally.
- Maintained a C# scanner app with SQL Compact, syncing data to a SAGE database.
PII | Jun 2001 – Sep 2010 | 9 yrs 4 mos
- Developed and migrated websites from Classic ASP/VBScript to JScript and ASP.NET.
- Maintained many SQL Stored Procedures, designed databases and complex reports in T-SQL.
- Built a WebSphere lead/prospecting web service on an AS/400 iSeries DB2 database, collaborating with a team.
- Focused on priority clients, adapting to emerging technologies like ASP.NET.
Websoft, Inc. | Feb 1998 – May 2001 | 3 yrs 4 mos
- Learned and applied Classic ASP/MS Access as a developer for a startup, delivering web solutions until its dissolution.
- AZ-204: Microsoft Certified Azure Developer Associate | Jan 2025
- AI-102: Microsoft Certified Azure AI Engineer Associate | Jun 2024
- AI-900: Microsoft Certified Azure AI Fundamentals | Jun 2024
- AZ-900: Microsoft Certified Azure Fundamentals | May 2024
BS - Computer Science | 2003
Illinois State University
- Languages: C#, T-SQL, ecmascript/javascript, typescript
- Frameworks/Platforms: .NET (9.0), ASP.NET MVC, WCF, Angular, HTMX
- Cloud: Azure (Durable Functions, Document Intelligence, AI Search, APIM), Kubernetes
- DevOps: CI/CD, GitHub Actions, GitLab, TFS, YAML Pipelines
- Databases: SQL Server, MongoDB, DB/2, SQL Compact
- Tools: Kafka, Docker, Grafana, OpenTelemetry, IdentityServer