Case studies

Work

Case studies from real roles across aviation, finance, and energy — not screenshots. Each one walks through the actual engineering: the problem, the options I weighed, the call I made, the failure I hit, and the measured outcome.

Every study is built to be scanned in fifteen seconds or read in full. If you want proof of how I work, this is the page to start on.

architectureJun 2025 – Present

Event-Driven Systems for High-Volume Billing & EV Telematics

Built event-driven distributed systems on AWS + Kafka + Cassandra for solar billing, TOU optimization, and EV telematics, and led the Cassandra driver migration off the deprecated Astyanax client.

GoJavaPythonAWS EventBridgeLambdaSQS

Cassandra client library

DataStax Java Driver
Astyanax (deprecated)
→
architectureOct 2023 – Sep 2024

Migrating Aviation Operational Data from Relational DBs to MongoDB

Query performance +20% and downtime −15% migrating legacy relational systems to MongoDB across aviation operational workflows.

JavaSpring BootMongoDBMySQLAggregation PipelinesGCP

Query performance

+20% faster
baseline (relational)
→
bet2025 – Present

LLM + RAG Automation for Backend Operations

Built internal AI-assisted tools (Python + LLM APIs, LangChain, RAG) for log analysis, anomaly detection, validation, and incident summarization — cutting manual operational toil across backend systems.

PythonLLM APIsLangChainEmbeddingsVector SearchRAG

Operational toil

AI-assisted, human-reviewed
fully manual log triage & incident write-ups
→
architectureAug 2024 – Oct 2024

Replacing Legacy Auth with Azure AD / Microsoft Entra ID

Migrated enterprise authentication to Azure AD / Microsoft Entra ID across multiple applications — login performance +25% — with OAuth2 and RBAC.

JavaSpring BootAzure ADOAuth2OIDCRBAC

Login performance

+25%
legacy auth baseline
→