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Résumé

Jamey McElveen

Principal Systems Architect · O'Reilly Author

Remote · Full-Time or Contract

Summary

Principal Systems Architect with 30+ years delivering enterprise .NET platforms across SaaS, FinTech, and Healthcare. Designed and sustained multi-tenant systems serving 50,000+ organizations; led teams of 20+ engineers through complete platform generational shifts. Expert in AI-Augmented Engineering — leveraging LLM-driven tooling (Cursor/Claude) to accelerate legacy modernization and reduce friction on complex refactoring work. Published O'Reilly author. Currently architecting an open-source mission clinic EMR (Christ Medical) with offline-first sync for field clinics in low-connectivity environments.

Education

B.S. Computer Engineering

Clemson University

C++ / OpenGL background applied to .NET GC optimization and performance-sensitive system design.

Go Tigers!

Contact

Florence, SC

Technical stack

Languages

C#.NET 9/CoreT-SQLTypeScriptC++Java

Frameworks

RESTWCF/SOAPWS-SecurityOpenAPINext.js 15ReactAngular 8-15StorybookTailwindVue.jsN-TierMDDStranglerShard RoutingOffline-FirstSOAEvent-Driven

Data

MS SQLPostgreSQLSnowflakeOracleRedisCovering IndexesRowVersionRLSResource Governor

Tools & Methods

KubernetesEKSDockerRailwayVercelCI/CDELK StackStructured LoggingOpenTelemetryHIPAAPHI MaskingBAATLS 1.2+FinTech AuditCursorClaudeLLM WorkflowsClean-Room PII ProtocolEpic EMROracle CloudDotmim SyncGIS/ESRIR&D MgmtMentoringADRsTechnical WritingScrum MasterProduct Owner

Community

  • FIRST Robotics — Technomancers: Technical Mentor — IB Baccalaureate STEM Program. Mentored high school students in Kotlin software development and circuit/sensor integration for competitive robotics. Translated complex engineering concepts into accessible instruction for students with no prior programming background.
  • AI Development — Peer Mentoring: Informal Mentor. Mentors peers in AI-augmented engineering workflows — Cursor, Claude, prompt engineering, and clean-room PII protocols for regulated environments. Extensive self-directed study applied directly to active production projects — not theoretical.

Work history

Principal Architect — Pro Bono / Kingdom Work

Christ Medical Mission System

2024 – Present
  • Architected offline-first sync layer using Dotmim Sync — field laptops operate independently and reconcile with central hub on reconnect. Zero data loss, no paper fallback required.
  • Implemented Double Metaphone phonetic patient search via PostgreSQL fuzzystrmatch — solving name romanization inconsistency across multilingual mission contexts.
  • Unified spiritual and medical outcome tracking in a single data model (spiritual=heard|hope|none) — treating the whole person as the patient.
  • Enforced CI parity via single gate running ESLint, Vitest, React Testing Library, and production Next.js build locally and in GitHub Actions.
✨ Healthcare / Missions — github.com/christmedical

Senior Solutions Architect

SecureGive

2023 – 2025
  • Architected high-concurrency public APIs in .NET Core on Kubernetes (EKS) with elastic scale to absorb Giving Tuesday traffic spikes — zero downtime during peak donation surges.
  • Designed anti-fraud heuristics to detect and shut down credit-card validation attacks (carding), protecting platform integrity and donor funds.
  • Engineered idempotent ETL pipelines for PostgreSQL to Snowflake migrations; pipelines restart mid-stream without duplicating financial records.
  • Leveraged Snowflake Time Travel for financial audit trails and year-over-year trend reporting without loading production transactional DB.
  • Created, maintained, and documented Angular components using Storybook across the full frontend component library.
  • Applied FinTech-grade security including immutable audit trails, TLS 1.2+ enforcement, and least-privilege access across all data surfaces.
✨ FinTech / Donation Processing

Senior Software Developer / Modernization Lead

McLeod Health

2021 – 2023
  • Migrated entire development organization from file-share-based storage to Git and GitHub — cleaning 100,000+ commits with BFG Repo-Cleaner, reducing repo size by 80%.
  • Implemented CI pipelines for HIPAA-compliant clinical systems, replacing manual deployments with automated, auditable release processes.
  • Mentored developers and interns on Git workflows, branching strategy, and pull request culture.
  • Introduced ELK stack with Golden Record PHI scrubbing service — replacing real names and SSNs with synthetic identities in non-production environments. Zero BAA exposure risk.
  • Enforced TLS 1.2+ across all WCF and REST endpoints.
  • Managed data integration bridges between .NET applications and Oracle Cloud / Epic EMR platforms serving thousands of clinical staff.
✨ Enterprise Healthcare / HIPAA

Programming Manager / R&D Architect

ACS Technologies

1996 – 2021
  • Except May 2005 – May 2006 (see Lyle's Data Systems)
  • Strategic architectural lead for flagship SaaS suite serving 50,000+ organizations worldwide; directed distributed R&D team of 20+ engineers.
  • Scrum Master for Realm for several years; served as Product Owner during management chapter — ran backlog grooming, story points, standups.
  • Pioneered Model-Driven Development (MDD) for large-scale C# codebases.
  • Used actor pattern for async debit card hardware feedback coordination in payment processing flows.
  • Departed following strategic leadership transition that altered the organization's technical vision and direction.
  • Realm — Multi-Tenant SaaS Platform — Architected multi-tenancy using RLS and SQL Resource Governor to prevent Noisy Neighbor degradation across 50,000+ tenants.
  • Realm — Multi-Tenant SaaS Platform — Built shard-aware routing layer enabling live zero-downtime tenant migration when organizations exceeded resource thresholds.
  • Facility Scheduler — N-Tier Scheduling Engine — Designed N-tier C# / WCF / SOAP architecture with custom WS-Security header processing in the WCF message pipeline.
  • Facility Scheduler — N-Tier Scheduling Engine — Eliminated high-concurrency booking conflicts using RowVersion optimistic locking; reduced scheduling query overhead 70% via covering index eliminating a bookmark lookup.
  • HeadMaster — School Management Ecosystem — Modeled non-linear Student-Guardian-Representative hierarchies using M:N relational tables with bitmask permission flags.
  • HeadMaster — School Management Ecosystem — Architecture maps directly to SC DSS / CAPSS child placement and voucher eligibility workflows — transferable to behavioral health or child-services SaaS domains.
✨ Enterprise SaaS

Programming Manager

Lyle's Data Systems

May 2005 – May 2006
  • Managed three developers delivering Java / Struts MVC government services platforms to municipal clients across the Southeast.
  • Architected multi-jurisdiction online property tax payment system enabling citizens and banks to pay home, vehicle, and boat taxes online.
  • Designed and built @ Your Request — citizen issue-reporting platform with photo uploads and real-time progress tracking.
  • Performed GIS / ESRI geospatial data conversion migrating legacy systems into MS SQL Server.
✨ Civic Tech / Government SaaS

Publications

iPhone Game Development

O'Reilly Media

Technical writing clarity applied daily — Swagger/OpenAPI specs, architecture decision records, and deep-dive team documentation.

Ask Jamey