# Tomas Venere — Project Portfolio **Chief Architect · Senior Software Engineer · Full-Stack Developer** veneret@gmail.com · [linkedin.com/in/tomas-venere-099165154](https://www.linkedin.com/in/tomas-venere-099165154/) · Dawsonville, GA > All repositories are private. This document provides a curated overview of the most significant projects across 12+ years of professional engineering. Metrics and details are based on first-hand involvement. --- ## Flagship Projects --- ### Heathos — Multi-Tenant Healthcare Platform **Role:** Independent Chief Architect & Head of Engineering **Year:** 2025 – Present **Stack:** .NET Core 8, C#, React, Blazor, Azure (AKS, Key Vault, Cosmos DB, Service Bus), SQL Server, Redis, RabbitMQ, Docker, Kubernetes, OAuth 2.0, SAML, Terraform, GitHub Actions **What it is:** A suite of four healthcare products built from the ground up, serving 4,000+ provider partners and designed to scale to 2.5 million patients. I was brought in as the sole architecture decision-maker and head of engineering. **What I built:** - Designed the entire cloud-native, multi-tenant platform on Azure with per-tenant compute and data isolation to meet 99.9% SLA from day one - Architected the microservices split aligned to team ownership boundaries — not just technical convenience - Built the security model from scratch: OAuth 2.0 + SAML for partner SSO, RBAC at the data row level, secrets rotation via Azure Key Vault, private endpoint network isolation - Set up CI/CD with GitHub Actions + Docker + Kubernetes (AKS); cut deployment time from ~3 hours to under 20 minutes within the first 6 weeks - Implemented SQL Server + Cosmos DB + Redis data layer; Redis caching dropped average API response times from ~380ms to ~90ms on the highest-traffic endpoints - Chose RabbitMQ over Service Bus after evaluating cost/latency tradeoffs for the async messaging backbone - Managing 3 parallel engineering squads (15 engineers total) across front-end, back-end, and infrastructure --- ### Envestnet — Enterprise Financial Platform Modernization **Role:** Chief Architect & Head of Engineering **Year:** 2025 – Present **Stack:** .NET Core, C#, Blazor, AWS (Bedrock, EKS, Secrets Manager), Azure OpenAI, Kafka, RabbitMQ, MassTransit, Redis, Docker, Kubernetes, ArgoCD, GitLab CI, Okta, Auth0, OAuth 2.0, SAML **What it is:** Enterprise wealth management and financial advisory platform serving 200,000+ advisor accounts. Led the full technical modernization of a 600,000-line C# monolith. **What I built:** - Decomposed a 600k-line monolith into 12 bounded-context microservices over 8 months; release cycle dropped from 3 weeks to 2 days, hotfix time from 4 hours to under 30 minutes - Designed a MassTransit + RabbitMQ/Kafka messaging layer processing 180,000+ financial events per day with saga orchestration, automatic retries, and dead-letter alerting — zero message loss in production since launch - Integrated AWS Bedrock and Azure OpenAI for an AI-assisted financial advisory feature; prototype to production in 11 weeks, now surfacing personalized insights for 200K+ advisor accounts - CI/CD transformation using GitLab CI + ArgoCD (GitOps) + Octopus Deploy across EKS clusters; teams went from 4 deploys/month to 40+ deploys/month with zero unplanned outages in the last quarter - Enterprise IAM via Okta + Auth0 across 15 partner integrations; passed SOC 2 review with no findings in the engineering domain - Redis caching strategy cut p95 API latency from 620ms to 95ms on portfolio analytics endpoints — the biggest user-facing win of the year per product team feedback - Coordinating 4 concurrent squads (~18 engineers) across wealth management tooling, reporting infrastructure, partner integrations, and platform security --- ### Alaska Airlines — Mileage Plan Award Modernization **Role:** Lead Engineer / Senior Software Engineer **Year:** 2021 – 2024 **Stack:** .NET / C#, React, Azure, Redis, SQL Server, GraphQL, JWT / OAuth 2.0, Azure Functions, Power BI, Serilog, Sumo Logic, GitHub Copilot **What it is:** Complete redesign of Alaska Airlines' Mileage Plan award redemption system. The algorithm I wrote has generated **over $100M in incremental Mileage Plan revenue every year since launch**. **What I built:** - Wrote the core award redemption algorithm end-to-end; led a team of 5 engineers through design, delivery, and stakeholder coordination with actuarial and finance - Built and maintained the BFF (Backend for Frontend) layer handling 4M+ API calls per month with JWT + OAuth 2.0, structured Serilog logging, and Sumo Logic alerting - Delivered the Siebel-to-LMS partner migration for 8 airline partners — designed API contracts, built the transformation layer, wrote integration tests, managed partner comms; zero incidents post-cutover - Built GraphQL + Redis caching layer for the Mileage Plan member portal; cache hit rate stabilized at 87% on the most common queries, meaningfully reducing DB load during peak booking windows - Built Power BI dashboards consumed by 200+ internal stakeholders across revenue management, loyalty ops, and executive leadership — replaced 6 manual Excel reports that were being emailed weekly - Led a GitHub Copilot-assisted refactoring sprint across 4 legacy microservices; cleaned ~38,000 lines of C#, improved test coverage from 22% to 61%, cut average PR review time in half --- ### Tri-State Memorial Hospital — Digital Platform (tristatehospital.org) **Role:** Software Engineer & Systems Integration Specialist **Year:** 2019 – 2021 **Stack:** ASP.NET Core, SQL Server, React, HL7 v2, WordPress, Windows Server 2016/2019, IIS, Logical Ink, Medex, Create!Forms **What it is:** Complete greenfield hospital digital platform built as a one-person team, plus HL7 healthcare messaging middleware for clinical system integration. **What I built:** - Built the entire tristatehospital.org platform from scratch: provisioned Windows Server, configured IIS, designed the SQL Server schema, and delivered 150+ pages including patient portals, staff directories, service listings, and 3 integrated sub-projects - Built HL7 v2 messaging middleware in .NET handling ADT, ORM, and ORU message types between the EMR, lab, and radiology systems; resolved a backlog of ~200 stuck messages in the first two weeks that had been failing silently for months - Integrated Logical Ink, Medex, and Create!Forms for digital clinical data capture, eliminating paper-based intake for 3 departments - Administered 4 Windows Server environments (2016/2019) — patching, SQL Server tuning, IIS config — maintaining 99.6% uptime over a full calendar year with no major incident --- ### Vastian — .NET Modernization & Microservices Migration **Role:** Senior Software Engineer & Technical Lead **Year:** Jun 2024 – Dec 2024 **Stack:** .NET Core 8, Razor Pages, Blazor, Azure, Docker, Azure Functions, Azure Service Bus, Syncfusion, SQL Server, TDD, Clean Architecture, SOLID **What I built:** - Migrated 3 legacy .NET Framework 4.7 applications to .NET Core 8; startup time dropped ~55%, memory footprint reduced ~40% - Built the Razor Pages + Blazor UI platform from scratch integrating Syncfusion's enterprise component suite; feature delivery time went from ~2 weeks per feature to ~2 days - Stood up a Docker-based microservices architecture on Azure with Azure Functions + Service Bus for async workflows; went from a single IIS monolith to 8 independently deployable services - Refactored the core domain layer with SOLID and Clean Architecture; cyclomatic complexity on the most-touched classes dropped from avg 34 to avg 8 - Raised unit test coverage from 11% to 73% in 4 months; production incidents dropped measurably in the final weeks of the engagement - Fixed 4 reporting SQL queries that were timing out in production; the slowest went from 47 seconds to under 2 seconds --- ### Envestnet Pulse — Internal Healthcare Analytics Platform **Role:** Chief Architect & Lead Engineer **Year:** 2025 – Present **Stack:** .NET Core, React, Azure, SQL Server, Redis, Docker, Kubernetes, REST APIs, CI/CD **What it is:** Internal multi-module web application spanning healthcare analytics, reporting dashboards, partner management, and operational tooling. Built alongside the broader Envestnet modernization work as a dedicated internal product. **Key highlights:** - Multi-tab SPA architecture with live data sync across modules - Role-based access control scoped to individual data records - CI/CD pipeline from commit to production in under 20 minutes - Integrated with the same microservices backbone as the enterprise platform --- ### Tomiwebsites.com Personal Portfolio & Tools **Role:** Founder & Developer **Year:** 2024 – Present **Stack:** ASP.NET Core 9, Razor Pages, Alpine.js, Tailwind CSS, highlight.js, Roslyn C# Scripting, Azure **What it is:** Personal site with live demos and interactive tools — deployed and publicly accessible. **What's in it:** - **Resume page** — interactive career timeline, animated stat counters, project cards with live status - **LeetyCode** — browser-based C# coding playground; runs real C# code server-side via Roslyn scripting, syntax-highlighted editor, 20+ algorithm problems with automated test cases and solutions - **Study Guide** — reference for .NET advanced topics, algorithm patterns (Big O analysis, code examples), and SQL mastery - **Maeve's Treatment Tracker** — real-time treatment tracker for a pediatric leukemia patient, with phase timeline, drug reference, interactive calendar, and medical glossary - **Warrior Path / ZeroToHero** — personal growth and habit tracking dashboard with XP system and life stat visualization - **Growth OS** — goals, habit logs, daily quotes, and personal analytics --- ### MediaLab VR — NASA-Affiliated VR Research **Role:** VR Developer & Research Contributor **Year:** 2016 – 2017 (Washington State University) **Stack:** Unity, C#, Python, 2D/3D Image Analysis **What I built:** - Designed and built interactive VR simulations and educational environments in Unity (C#), including 3D physics, dynamic lighting, and immersive interaction systems - Contributed to a NASA-affiliated research initiative involving advanced 2D/3D image analysis with Python for aerospace and scientific datasets --- ### QwickCharge — EV Charging Platform UI **Role:** Front-End Developer **Year:** 2017 – 2018 **Stack:** React.js, .NET, Azure, WordPress **What I built:** - Developed responsive React.js UI components integrated with a custom .NET backend - Supported Azure-hosted deployment pipelines and environment configuration across dev, staging, and production --- ### Independent Consulting — Tomiwebsites.com & HottCode.com **Role:** Founder & Full-Stack Developer **Year:** 2015 – 2021 **What I built:** - Delivered 100+ custom websites for independent clients using React, WordPress, Angular, and Svelte — full UI/UX design, backend integration, and hosting setup - Built and deployed 6+ mobile applications in React Native, Kotlin (Android), and Swift (iOS) --- ## Core Competencies | Area | Details | |---|---| | **Architecture** | Microservices, Clean Architecture, DDD, CQRS, Event Sourcing, BFF, API Gateway | | **Languages** | C#, JavaScript/TypeScript, Python, Java, Swift, Kotlin, SQL | | **Frameworks** | .NET Core, React, Blazor, Razor Pages, Angular, React Native | | **Cloud** | Azure (AKS, Functions, Service Bus, Key Vault, Cosmos DB), AWS (EKS, Bedrock, Lambda, Fargate, Secrets Manager), GCP | | **Messaging** | RabbitMQ, Kafka, MassTransit, Azure Service Bus | | **Data** | SQL Server, PostgreSQL, Cosmos DB, Redis, Power BI | | **Security** | OAuth 2.0, SAML, JWT, Okta, Auth0, RBAC, SOC 2, SC-100 Certified | | **DevOps** | Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI, ArgoCD, Octopus Deploy | | **AI** | AWS Bedrock, Azure OpenAI, Roslyn scripting, GitHub Copilot | | **Leadership** | 3–4 parallel Agile squads, 14–20 engineers, ADRs, architecture reviews, mentoring | --- ## By the Numbers - **$100M+** in annual revenue generated by a single algorithm (Alaska Airlines Mileage Plan) - **4M+** API calls per month on systems I built - **180,000+** financial events per day processed with zero message loss - **200,000+** advisor accounts served on AI-enhanced platform - **4,000+** provider partners on the Heathos healthcare platform - **600,000** lines of legacy code decomposed into clean microservices - **100+** websites delivered for independent clients - **150+** engineers mentored over 12 years - **12+** years of professional software engineering --- ## Certifications - Microsoft Certified: Cybersecurity Architect Expert (SC-100) - AWS & Azure cloud practitioner experience across production workloads --- *References, architecture diagrams, and deeper technical walkthroughs available upon request.* *Contact: veneret@gmail.com*