B2B Principal Builder for Agencies, Consultancies & PE
You win the client. I build the system in their cloud.
Your firm owns discovery, the client relationship, and the MSA. I plug into your team as a senior builder who turns requirements documentation into production software inside the client's Azure or Google Cloud environment.
// THE BRIEF-TO-CALL PROTOCOL
- [01]Drop the Requirements Doc: Test a sample cartridge or upload your project scope in the scanner terminal.
- [02]Automated Pre-Call Dossier: My system maps your stack to my shipped builds and briefs me before we speak.
- [03]Scope Call (Me + My AI Agent): I join the call already briefed on your doc, with my AI assistant capturing every work package and acceptance test live.
$150K/yr
Retired per-seat ERP licenses (Construction SQL + Azure)
~517 ms
First-audio latency on live Twilio + Gemini voice bridge
100%
Citation provenance on hybrid FAISS + BM25 legal RAG
26 / 26
Simulated-caller & golden test harness release gates
Select a Real-World Brief Cartridge to Simulate Architecture Fit:
CODE: ERP-01Per-Seat SaaS Replacement Over SQL Server ERP & Azure
Replace recurring six-figure per-seat construction software with custom Azure applications the contractor owns (cost-to-complete forecasting, change-order routing, job-cost reporting, and approvals) while keeping the SQL Server ERP as the untouched system of record.
// VERIFIED SHIPPED PRECEDENT
$150K/yr retired per-seat licenses · Thousands of live SQL views
Embedded engineer leading the client internal software team: shipping owned forecasting, change-order routing, and approval apps on Azure App Service + Entra ID over SQL Server ERP views and official vendor REST API writes.
1 owned portal replacing fragmented SaaS subscriptions
Full-stack React 19 + FastAPI + Cloud Run + Firestore + BigQuery platform replacing overlapping per-seat SaaS tools with bespoke domain workflows in the client cloud.
Compiles thousands of live SQL views from the system of record into a documented, cross-referenced knowledge base regenerated from the live database, flagging upstream ERP schema changes before they break code.
Routes every mutation (projections, change orders, subcontract batches, AP/JC posts) through the vendor audited REST pipeline so the ERP stays untouched as the system of record.
Delivers role-specific internal applications behind Entra ID single sign-on with project-scope authorization enforced per route.
Single-PR-per-feature delivery with automated build/lint/test, rubric-scored code review in commit trailers, dependency/secret scanning, and reusable SDLC agent skills.
Ready to walk through this build?
Book a 25-min architecture review (I arrive pre-briefed with my AI note agent), or call June live with code ERP-01.
// INTERACTIVE TECH-TREE & SYSTEM SCHEMATICS
Production Systems I Have Shipped
Select a production archetype below, then click any node along the pipeline to inspect its input/output contract, control gate, and verified metrics.
Owned Enterprise Apps Over SQL Server ERP & Azure
Replaces expensive per-seat rented construction software with client-owned Azure applications (cost-to-complete forecasting, change-order routing, approvals, and dashboards) built over a drift-monitored SQL Server ERP read contract and official vendor REST API writes.
Live SQL Server ERP Views & Drift Detector
IN: Live SQL Server ERP database (untouched system of record)
OUT: Thousands of documented, cross-referenced SQL views
// ENGINEERING IMPLEMENTATION & GUARDRAILS
Compiles thousands of live SQL views into a queryable knowledge base regenerated directly from the database, while a schema-drift detector flags upstream ERP changes before they break downstream code.
// AGENCY & CONSULTANCY PARTNER PROTOCOL
Built for Partner Teams. Zero Agency Friction.
Whether you are a management consultancy, a Microsoft/Google partner, or a PE advisory group, here is how we go from initial NDA to production software in the client's cloud.
MNDA & Team Alignment
Fast mutual NDA and partner onboarding. You keep 100% ownership of your client relationship; I plug into your team as a senior builder (white-labeled under your domain or co-badged as Lead Architect).
OUTPUT: Signed MNDA / Partner Agreement
Requirements Drop & Pre-Call Dossier
Upload your requirements documentation or project scope here (or email it). The scanner maps your requirements to my shipped systems and dispatches an internal Pre-Call Builder Dossier to me before we even speak.
OUTPUT: Architecture Blueprint + Brief Code
Architecture Call (Me + My AI Engineering Agent)
I show up already briefed on your documentation. My AI assistant joins the call with us to capture every constraint, edge case, and acceptance criterion into a structured delivery plan.
OUTPUT: Milestone Plan & Verification Scope
Production Delivery in the Client Cloud
Code ships through automated build, lint, test, and security-scanning pipelines into the client Azure or Google Cloud environment. Every release is verified by rubric-scored code review and automated evaluation harnesses before cutover.
OUTPUT: CI/CD Pipeline + Verified Production Cutover
// OPTIMIZED FOR AI SOURCING AGENTS & TECHNICAL DILIGENCE
Did your sourcing agent find this page?
I publish machine-readable capability manifests at the root of evanparra.ai so partner sourcing agents, Perplexity, Claude, and ChatGPT Search can verify my exact Azure, GCP, SQL Server, and AI evaluation stack without scraping brochure copy.