// senior software engineer

Leo
Kukhar

A decade of building backend systems, cloud-native architectures, and developer tooling. From monolith-to-microservices migrations to AI-powered agents, I care about software that scales, holds up, and ships.

.NET Temporal Kubernetes Azure MongoDB Redis Terraform TypeScript Docker
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Skills
Languages
C# · Python · TypeScript · JavaScript · Visual Basic · VBScript
Backend
.NET · Web API · MVC · Entity Framework · Dapper · MongoDB Driver
Database
MongoDB · CosmosDB · SQL Server · MySQL · Redis · BigQuery
Cloud & Infra
Azure · Kubernetes · Helm · Docker · Terraform · Azure DevOps
Frontend
React · Vue.js · HTML5 · CSS3 · Tailwind · Bootstrap
Tools
Temporal · Datadog · Git · Postman · Mongo Atlas · Cursor
Experience
$ Currently building amazing things_
  • Taught and mentored software engineering and web development across a recurring roster of mentees
  • Evaluated mentee performance, clarified concepts with hands-on examples, and curated learning resources tailored to individual goals
  • Assisted in debugging, refactoring, and aligning code with industry best practices
  • Enhanced UX by upgrading the Classification UI from AngularJS to React
  • Developed a reporting service that cut Google BigQuery costs by $5,000/month and improved report performance with Redis caching
  • Integrated Azure Application Insights to diagnose system issues, track KPIs, and monitor application events
  • Used Azure MongoDB to store test data for a custom Edit Test Suite, ensuring healthcare claim edits aligned with business requirements
  • Developed and maintained applications for classifying, routing, and editing healthcare claims using .NET/.NET Core, Angular 2+, and Kendo UI
  • Migrated Microsoft Access databases to SQL Server, resolving OLE DB Provider compatibility issues while maintaining application performance
  • Migrated VBScript batch jobs to C#/.NET Core, improving performance and long-term maintainability
  • Developed new C#/.NET Core batch jobs using Visual Cron to automate business processes
  • Optimized and maintained legacy intranet sites built with VBScript
  • Maintained and enhanced the customer-facing website to improve user experience and functionality
  • Eliminated the need to mail ~16,000 checks weekly by developing an ACH feature handling payments internally, significantly reducing operational costs
  • Developed a ticketing system to track client dispositions during service calls, improving customer service workflows
  • Built call routing phone trees using the Twilio API to streamline internal communications
  • Implemented Google OAuth2 to integrate voicemails and faxes from Gmail into the internal system
  • Leveraged Azure services — Azure AD B2C, Key Vault, Cosmos DB, Web App, and API App — to scale and optimize company products
  • Contributed to transforming a monolithic application into a microservices architecture
Certifications
Microsoft
Azure Fundamentals
Issued Mar 2023
Microsoft
MTA: Database Fundamentals
Issued Mar 2017
Microsoft
MTA: HTML5 Application Development Fundamentals
Issued Nov 2017
StationX
Hackers Exposed Volume 1
Issued Aug 2017