Architecture review
Request paths, trust boundaries, service contracts and dependency failure modes.
INTEGRATION / RELIABILITY
API integration & system architecture
Connect the systems. Make the failure paths explicit.
I work on the boundaries between products: identity, requests, data ownership and recovery. A working integration must account for slow services, expired access, duplicate events and partial failures.
Discuss this service
Is this the problem
you are facing?
- Several products need a controlled gateway to a shared service.
- An integration works in a demo but becomes unreliable under retries or unavailable dependencies.
- You need to separate tenant access, authentication and business logic clearly.
A PRACTICAL ENGAGEMENT
What the work can include
Implemented boundary
Authentication, validated requests, timeouts and recovery behavior appropriate to the service.
Operational evidence
Tests of important paths, meaningful diagnostics and an explanation of what happens when a dependency is unavailable.
EVIDENCE / PUBLISHED WORK
See how I have approached it
AG Bridge documents an authenticated FastAPI AI gateway with a circuit breaker and observability. Meridian documents PostgreSQL row-level security and an ETA-aware polling scheduler. The audit form studies upload handling and storage boundaries.
AI orchestration
AG Bridge — AI Gateway
A JWT-authenticated FastAPI AI gateway with circuit breaker, AES-256-GCM session encryption and Prometheus observability for a multi-product platform.
Python 3.12 · FastAPI · Uvicorn / Gunicorn · Gemini 2.5 Flash · Redis
Systems architecture
Polling on the ETA, Not the Clock — Meridian
Meridian: a multi-tenant container-tracking SaaS on PostgreSQL RLS with an adaptive, ETA-anchored polling scheduler that cut vendor API calls ~6×.
Node 20 · Express + Helmet · PostgreSQL 16 (Force RLS) · Redis 7 · React 18 + Vite
Systems architecture
Hardened Audit Submission Form
How Del Rey Valmoria built a zero-trust, security-hardened file upload form with 6-layer security, streaming to S3-compatible storage, and zero RAM buffering.
Node.js 20 Alpine · Express 4 · multer (streaming) · AWS SDK v3 · MinIO
Data pipelines
The Numbers Were Wrong — AP Data-Integrity Rescue
Tracing an eight-figure AP overstatement to a duplicated pagination parameter: 2,725 surplus rows purged, the sync rebuilt as an idempotent pipeline.
React 18 + Vite · Keycloak OIDC · Node + Express · NocoDB · n8n
AI orchestration
CTO Intelligence Hub
A real-time engineering command center for a cloud AI agency: Keycloak SSO, an AI assistant, health monitoring and zero-framework architecture.
Vanilla JS · Keycloak 26 · PKCE S256 · PostgreSQL 16 · FastAPI
AI orchestration
GrowthOS Voice Relay — AI Phone Intake
A compliant AI phone-intake agent on Twilio ConversationRelay: a code-locked honesty floor, ~1s per-turn latency, live EN/ES switching, no recording.
Node.js · ws (WebSocket) · Twilio ConversationRelay · Google Gemini 2.5 Flash · Google TTS (Journey)
BEFORE WE START
Common questions
Can you assess a system before rebuilding it?
Yes. A useful first scope is a bounded review of one integration or failure, with concrete evidence and a recommended change.
Do you guarantee uptime?
Availability depends on hosting, dependencies and operational coverage. Any service-level commitment must be separately agreed and supported by the actual infrastructure.
What evidence helps you diagnose an integration?
A sanitized failing request, expected response, timestamps, architecture sketch and relevant error logs. Do not include credentials in an inquiry.
START WITH A $150 AUDIT
Where is your business losing
leads or hours?
Tell me what happens today and what keeps going wrong. I reply with times for a 45-minute audit call; you get a written fix list with fixed prices, and the $150 is credited against any build.