operational workflows in one command center
Integrated 21 operational workflows into one AI-assisted command center, consolidating coordination, exception visibility and process monitoring so handoffs stop depending on manual follow-up.
Hello, I’m
EVANNARAYA
Python · FastAPI · TypeScript · PostgreSQLBackend &IntegrationEngineer.
APIs, webhooks and workflow automation that stay correct under duplicates, timeouts and retries.
HOW I BUILD
I design for
what happens
when systems
fail.
Reliable APIs, explicit state, and recovery paths. Not just the happy path.
See systems and proof →CLIENT WORK
Delivered for
real clients.
lead volume from automated follow-up
Built n8n workflows connecting LinkedIn, email and the client website for lead generation, outreach and follow-up, contributing to approximately 2x lead volume.
SELECTED WORK
Work you can
inspect.
Lead intake, documents, and controlled AI.
01 / 03 · FULL-STACK ENGINEERING
Full-Stack AI Operations Console
A working Next.js interface, Fastify API and PostgreSQL worker system. Configure workflows, approve execution, inspect saved attempts, and recover failed runs.
58/58 system tests · 10/10 browser cases in each native and Docker environment · 10/10 Docker smoke checks
Deterministic HTTP sandbox for AI triage; no live production LLM or customer deployment.
Next.js · React · TypeScript · Fastify · PostgreSQL · Prisma · Docker
RUNNING APPLICATION / CI CAPTURE
WORKFLOWS · APPROVALS · RECOVERY
02 / 03 · PYTHON / FASTAPI
Bounded Agent Runtime
AI actions need boundaries and safe recovery. This reference records intent before API calls, holds sensitive writes for approval, and reconciles uncertain outcomes.
261 tests · 90.01% coverage · preserved v2
Source & tests →ARCHITECTURE / AGENT RUNTIME
EXPLICIT EXECUTION STATESIMPLIFIED SYSTEM MODEL
01 / ADMISSIONValidatetenant + request
02 / CONTROLApprovepersistent decision
03 / WRITEPersist intentbefore external I/O
04 / RECOVERReconcileuncertain outcome
Timeout ≠ failure.Avoid repeating a possible external side effect.
API · STATE · RECOVERY
03 / 03 · FASTAPI / PGVECTOR / MCP
Knowledge Workflow Runtime
Find answers in current documents. This reference processes files, tracks versions, returns source citations, and holds uncertain extraction for review.
134 tests · 91.64% coverage · 12/12 evals
Source & tests →ARCHITECTURE / KNOWLEDGE RUNTIME
SOURCE LIFECYCLESIMPLIFIED SYSTEM MODEL
01 / SOURCEIngestPDF · image · DOCX
02 / STATEVersionatomic updates + deletes
03 / RETRIEVALRetrievecurrent source citations
04 / AUTHORITYReviewMCP + human approval
Stale data stays out.Current citations and review before handoff.
RETRIEVAL · DATA · AUTHORITY
Independent tested reference. Results are archived v2 evidence, not current commercial use or universal exactly-once delivery.
Default retrieval uses deterministic lexical embeddings and extractive answers. Twelve synthetic regression cases do not establish commercial semantic retrieval quality.
These are tested engineering references, not claims of live customer scale or uptime. Test figures describe the linked revisions. Agent evidence · Knowledge verification
ALSO BUILT
More engineering
work.
LOCAL LLM / AGENT ORCHESTRATION
RepoPilot AI
Local-first AI coding agent with model adapters, durable dispatch, approval-gated code proposals and GitHub publication safeguards. Real CPU-based local inference verified; isolated code execution remains disabled pending security validation.
Real local inference · tested workflow components · security-gated execution
TYPESCRIPT / POSTGRESQL
Production Integration Reference
Lead intake with signed webhooks, duplicate-event checks, bounded retries, and saved handoff outcomes.
Runnable reference · tests · CI
N8N / JAVASCRIPT
VAREVANT Workflow Engineering
Lead routing and follow-up controls: suppression, state checks, no-send paths, and recovery evidence.
117-node historical graph · 60 Code nodes
LOCAL-FIRST AI AGENT / PYTHON / SQLITE
VARYN
Experimental Windows AI workspace with owner-approved LLM request routing, durable memory and task state, scoped read-only tools and a crash-aware execution journal. CI on Windows and Ubuntu.
Experimental pre-release · unsigned Windows builds
Also: BIMMCA Intelligence ↗: Supabase browser consumer.
CAPABILITIES
The stack behind
the work.
Backend
Python · FastAPI
PostgreSQL · Pydantic
Integration
n8n · REST APIs
Webhooks · TypeScript
AI systems
MCP · Retrieval
Structured outputs · OCR
Reliability
Idempotency · Approvals
Tests · CI · Recovery
CONTACT
Let’s
connect.
Backend & Integration Engineer working in Python, FastAPI, TypeScript and PostgreSQL. Open to remote full-time and contract roles.