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Executive Summary

Results-driven Full-Stack & Mobile Software Engineer and Architect with extensive experience designing and scaling web, mobile, and cloud-native solutions. Combines deep system architecture and implementation skills with proven expertise in navigating complex corporate restructuring—including major corporate spin-offs, acquisitions, and cross-cloud integrations. Brings a security-first mindset across enterprise authentication (OIDC, OAuth 2.0, PKCE, SAML 2.0), automated vulnerability management, and penetration testing. Pragmatically leverages Large Language Models (LLMs) to accelerate development workflows, grounded in strong software engineering principles, human code verification, and total technical independence. Seeking a hands-on developer or architect position to deliver high-performance applications across mobile, web, and Microsoft Azure environments.

Technical Skills & Core Competencies

  • Architecture & Leadership: Software Architecture, Full-Stack Engineering, Mobile App Development, B2B Integration Hubs, Technical Team Leadership, M&A System Migrations
  • Application & Cloud Security: Security Methodologies, OIDC, OAuth 2.0, PKCE, SAML 2.0, Federated SSO, JWT, Penetration Testing, Snyk Scanning, Secrets Management, Zero-Trust Architecture
  • Cloud Infrastructure & DevOps: Microsoft Azure, AWS, Azure DevOps, CI/CD Pipelines, Docker, Azure Private Container Registry (ACR), Azure VNets, Managed Identities, Azure Key Vault, Private Artifactory
  • Mobile & Cross-Platform: Flutter, Dart, C# .NET MAUI, iOS, Android, MapBox UI/UX
  • Programming Languages: Rust, C#, Dart, Java, C++, TypeScript, JavaScript, SQL
  • Web & Frameworks: ASP.NET MVC, RESTful APIs, Web Services, WebSockets, HTML5/CSS, Node.js
  • Databases & Middleware: Azure SQL, SQL Server, Oracle, PostgreSQL, PostGIS, Microsoft BizTalk Server, webMethods, SNMP, MIL-STD-1553

Work Experience

Obex Solutions / Frosch (Acquired by Chase Travel) | Houston, TX

Principal Software Architect & Lead Developer | 2015 – Present

  • Product Leadership & Core Patent: Served as founding Architect and Lead Developer, taking the corporate travel management platform from concept to production. Architected and led the engineering team building the core solution that powers US Patent 11,049,046 B2, solving critical enterprise travel management and real-time operational communication challenges.

  • Real-Time Data Ingestion & Engine: Designed continuous real-time data pipelines to ingest, parse, and persist complex Global Distribution System (GDS) booking data into Azure SQL databases, aggregating trips booked both inside and outside of traditional Travel Management Companies (TMCs).

  • Cross-Platform UX & Multi-Role Web/Mobile Apps: Built pixel-perfect, highly responsive native iOS/Android mobile applications (using C# .NET MAUI) and companion web applications. Integrated MapBox and custom UI animations to deliver intuitive trip timelines, flight delay predictions, TSA wait times, sustainability insights, and direct access to travel services (e.g., Uber, Lyft, VeriFLY).

  • Role-Based Access Control (RBAC): Implemented fine-grained RBAC and multi-tenant security architecture enabling custom access levels and tailored views for Travelers, Travel Arrangers, and Corporate Travel Managers.

  • Real-Time Agent Assistance & Communication Platform: Engineered a dedicated companion web application for Frosch Travel Agents, empowering agents to provide seamless, real-time traveler support via integrated SMS, chat, email, and voice assistance.

  • Enterprise Security, SSO & Cloud Infrastructure: Architected secure, highly available Azure infrastructure using Docker containerization, Azure App Services inside isolated VNets, Managed Identities, and Azure Key Vault. Implemented enterprise SSO across client IdPs using SAML 2.0, OIDC, OAuth 2.0, PKCE, and JWT tokens.

  • M&A Technical Integration & Migration: Led engineering alignment across two consecutive corporate acquisitions (Obex → Frosch → Chase Travel). Collaborated with Chase engineering teams to migrate Azure workloads to AWS while meeting strict financial-grade security and compliance standards.

Occidental Petroleum Corp. (Oxy) | Houston, TX

IT Consultant | 2003 – 2014

  • Corporate Spin-Off Execution: Architected and executed the complete replication and migration of Oxy’s mission-critical Enterprise Integration Platform during the major corporate spin-off of California Resources Corporation (CRC), seamlessly standing up identical, fully operational CRCMI BizTalk environments without disrupting ongoing business operations.

  • Enterprise Integration (BizTalk & webMethods): Led full-lifecycle development to replace legacy webMethods pipelines with Microsoft BizTalk Server 2010 using Agile methodologies. Built BizTalk schemas, orchestrations, maps, and custom C# assemblies to integrate trading, pricing, and database systems (Allegro, PowerXL, FIMI, GlobalView, SQL Server, Oracle).

  • Plug-in-Driven Tax Data Management System: Architected a high-volume tax management web application using ASP.NET MVC. Designed a dynamic, plugin-based architecture allowing annual tax rule updates without recompiling code, and delivered a desktop-like multi-window UI for optimized productivity.

  • Resource Reservation & Email Platform Integration: Engineered a centralized resource booking system integrated directly with Microsoft Exchange Server via the Exchange API and Outlook, streamlining scheduling across all business units.

  • 3D Geological Visualization Plug-in: Developed a WPF/C++ desktop plug-in for Schlumberger’s Petrel platform, automating polygon generation for oil field injection patterns and rendering real-time results in 3D for geologists and engineers.

  • Electronic Invoicing System: Built an automated vendor invoicing and ticket processing web application using ASP.NET MVC and MS SQL Server to streamline accounts payable workflows.

Novoforum | Houston, TX

Senior Software Developer | 2000 – 2003

  • B2B Integration & Web Services: Designed and implemented a high-reliability B2B Integration Hub using Java and webMethods, facilitating guaranteed message delivery, routing, and translation between trading partners.

  • Enterprise Adapters: Developed Java/C++ SOAP web services and JNI bridges connecting webMethods Enterprise Server with Landmark Graphics' OpenWorks application.

  • Mentorship & Web Architecture: Built enterprise J2EE web applications hosted on BEA WebLogic application servers and mentored junior engineers on emerging Java web standards.

Greenash Corporation | Houston, TX

Freelance Consultant | 2000 – 2001

  • Real-time Sports Telemetry Application: Developed high-traffic backend services (Session EJBs, Servlets, JSP) and interactive 2D Java Applets for Fox Sports’ GameTracker platform, rendering real-time NFL game events, live scores, and fantasy league statistics.

Symantec Corporation (BindView Corporation) | Houston, TX

Senior Software Developer | 1997 – 2000

  • System Administration Tooling: Played a key role in designing and developing the mailAdmin management product for Microsoft Exchange, utilizing C++, COM, and Win32 API to automate monitoring for system availability, disk utilization, performance, and security.

Meridian Technology Corporation | St. Louis, MO

Senior Engineer | 1995 – 1997

  • Network Management Console: Built an SNMP Management Console for Remote Access Servers, providing system administrators with centralized user access control, audit logging, security policy enforcement, and statistics tracking.

The Boeing Company (McDonnell Douglas Aerospace) | St. Louis, MO

Senior Engineer | 1992 – 1995

  • Avionics & Flight Simulation Software: Engineered real-time flight software simulating the F/A-18 Mission Computer and monitored the MIL-STD-1553 avionics bus using C++ and Borland OWL. Developed test suites for critical onboard sub-systems across all phases of the software development lifecycle.

Projects, Portfolio & Technical Writing

  • Personal Engineering Blog & Portfolio (lekevin.dev): Author technical articles and architectural deep-dives covering full-stack web architectures, Rust backend services, cross-platform mobile design, and modern devops infrastructure.

  • Gym Locker Memory (iOS & Android): Designed, built, and launched a privacy-focused cross-platform mobile application using Flutter and Dart for secure local data storage with custom UI components, haptics, and state management.

  • Real-Time Collaborative Canvas Platform: Engineered an interactive, multi-room collaborative web platform utilizing a Rust (Axum/Tokio) backend with Server-Sent Events (SSE) and an HTMX / Alpine.js / Konva.js frontend.

  • Cloud & Database Infrastructure Labs: Configured and deployed containerized environments using Docker Compose, Nginx reverse proxies, automated Certbot SSL renewal, and PostgreSQL/PostGIS database instances.

Patents

  • US Patent 11,049,046 B2: Systems and methods for business travel management and real-time operational updates.

Education

  • Bachelor of Science (B.S.) in Electrical Engineering — University of Iowa