Services & Productized Advisory

One Piece,
Precisely Built.

I build, test, and verify the most critical components of your software — from payment ledgers and access control to AI agent pipelines.

Fractional CTO & Technical Leadership

Technology Roadmap & Fractional CTO Advisory

Eliminate tech paralysis with 2-week strategic scoping, stack selection, and developer-ready 90-day technical execution roadmaps.

The Problem & My Approach
Tech Paralysis & Unclear Developer Specifications
  • —Non-technical founders overwhelmed by tech stack choices and cloud costs.
  • —Hiring developers without clear specifications leading to wasted budgets and abandoned apps.
  • —Getting overcharged by agencies due to lack of technical oversight.
C4 System Blueprints & Phased 90-Day Milestones
  • Audit business workflows and select modern, stable, non-hype technologies.
  • Draft modular technical specs, database schemas (DBML), and OpenAPI contracts.
  • Break execution into 30-day milestones with explicit acceptance criteria.
Concrete Client Deliverables
Comprehensive System Architecture Blueprint (C4 Model & DB Schemas)
Technology Stack Justification & Cloud Cost Comparison Matrix
Phased 90-Day Technical Execution Roadmap with 30-day sprint milestones
Developer Hiring & Agency RFP Specification Brief
Pricing Anchor & TimelineFixed-Fee Scoping Package or Monthly Advisory2-Week Scoping or Ongoing Advisory
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Dedicated Backend & Infrastructure Build

Resilient Backend & Developer API Infrastructure

Design and build production-grade application backends and public Developer API Ecosystems built to survive scale.

The Problem & My Approach
Fragile APIs & Unmanaged Webhook Failures
  • —Public API endpoints breaking under concurrent traffic spikes.
  • —Dropped webhooks causing state desynchronization between systems.
  • —Lack of distributed rate-limiting and public API key lifecycle management.
Decoupled Service Layers & Transactional Outboxes
  • Implement transactional outbox engines to guarantee zero-drop webhook delivery.
  • Build framework-agnostic TypeScript service layers decoupled from API frameworks.
  • Enforce distributed rate limiting using Redis token-bucket algorithms.
Concrete Client Deliverables
Production-ready OpenAPI v3 specification & interactive portal
Transactional Outbox Webhook Engine module
Distributed Rate Limiter & API key rotation middleware
20-page Architectural Risk Audit & Remediation Report
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–4 Weeks Delivery
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Dedicated Backend & Infrastructure Build

Enterprise Identity & Access Control (RBAC/ABAC)

Implement zero-trust identity, fine-grained RBAC/ABAC permissions, and PostgreSQL Row-Level Security tenant isolation.

The Problem & My Approach
Cross-Tenant Leaks & Weak Permission Guards
  • —Boolean role flags failing to support enterprise permissions and org hierarchies.
  • —Catastrophic cross-tenant data leak risks in shared database clusters.
  • —Session hijacking vulnerabilities and unmanaged JWT token expiration.
Database-Level RLS & Fine-Grained Permission Matrices
  • Enforce PostgreSQL Row-Level Security policies to isolate multi-tenant data at the engine level.
  • Replace broad roles with explicit permission strings evaluated by type-safe middleware.
  • Deploy HTTP-only cookie session rotation with token breach detection.
Concrete Client Deliverables
Production-ready RBAC/ABAC permission evaluation middleware
PostgreSQL Row-Level Security schema migration & tenant functions
Secure cookie session rotation & revocation system
20-page Identity & Data Isolation Security Matrix
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–3 Weeks Delivery
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Dedicated Backend & Infrastructure Build

Idempotent Payment & Billing Architectures

Build zero-double-charge payment pipelines, audit-ready double-entry ledgers, and resilient webhook engines.

The Problem & My Approach
Double-Charging Bugs & Unhandled Webhooks
  • —Network retries or duplicate clicks causing double charges for a single order.
  • —Dropped payment webhooks resulting in silent revenue loss and user state drift.
  • —Lack of immutable double-entry accounting ledgers for financial audits.
Cryptographic Idempotency & Double-Entry Accounting
  • Enforce strict cryptographic idempotency keys to prevent duplicate transaction execution.
  • Implement immutable double-entry accounting ledgers for audit-ready balance tracking.
  • Commit business logic updates and outgoing payment events inside a transactional outbox.
Concrete Client Deliverables
Production-ready Idempotent Checkout Engine backend
Immutable Double-Entry Ledger database schema & execution library
Asynchronous Webhook Receiver with HMAC validation & deduplication
20-page Financial Reconciliation & Audit Protocol Report
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–3 Weeks Delivery
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Data-Heavy UI & State Management

Data-Dense Admin Consoles & Real-Time Sync

Build high-density operations dashboards, server-driven TanStack data tables, and real-time SSE sync engines.

The Problem & My Approach
Clunky Ops Tools & Admin Logic Leaks
  • —Slow, unoptimized admin tables freezing under high row counts.
  • —Inline UI toggles leaking admin routes and middleware into public client bundles.
  • —Lack of real-time status updates forcing constant manual page refreshes.
Sandboxed Route Groups & Server-Driven Tables
  • Isolate admin consoles into dedicated route groups ((admin)) or standalone repositories.
  • Deploy server-driven TanStack Table pagination, sorting, and JSONB filtering.
  • Stream live status updates via Server-Sent Events (SSE) and log audit events.
Concrete Client Deliverables
Sandboxed Operations Console with TanStack Table architecture
Real-time Server-Sent Events (SSE) broadcasting module
Append-only Operational Audit Log database schema & UI timeline
Query Optimization & Indexing Guide for high-row reporting
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–4 Weeks Delivery
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System Architecture & Risk Auditing

Architectural Risk Auditing & System Stabilization

Rapid 1-to-2 week intensive diagnostic audit analyzing database locks, query performance, security risks, and system crashes.

The Problem & My Approach
System Crashes & Unidentified Database Bottlenecks
  • —Unexpected database deadlocks, memory leaks, and CPU spikes during traffic surges.
  • —Internal teams trapped fighting daily fires rather than solving root causes.
  • —Investors requiring technical due diligence before funding or acquisition.
Static Inspection & PostgreSQL EXPLAIN ANALYZE Profiling
  • Profile query execution plans (EXPLAIN ANALYZE) and connection pool lock contention.
  • Audit security boundaries, session rotation, and payment outbox reliability.
  • Deliver a prioritized 30-day remediation matrix with exact code references.
Concrete Client Deliverables
Blunt 20-Page Architectural Audit Report with code references
Prioritized 30-Day Technical Remediation Roadmap
Executive Summary & Risk Scorecard for investors/CEOs
90-Minute Technical Debrief Session with engineering leads
Pricing Anchor & TimelineFixed-Rate Diagnostic Sprint1–2 Weeks Delivery
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AI, Agents & Workflow Automation

Deterministic RAG & Secure Agent Integration

Build zero-hallucination hybrid RAG pipelines, pgvector tenant metadata filtering, and Zod-validated agent tool loops.

The Problem & My Approach
AI Hallucinations & Unmanaged LLM Token Costs
  • —Generic AI wrappers producing hallucinated answers without clear document attribution.
  • —Unmanaged vector databases risking enterprise data leaks across tenant boundaries.
  • —Unpredictable API token bill shocks and lack of structured agent execution logs.
Hybrid Vector Search & Strict Automated Evals
  • Combine pgvector embeddings with PostgreSQL full-text search for high-precision retrieval.
  • Enforce tenant metadata filtering directly inside vector queries for hard isolation.
  • Structure multi-step agent loops with Zod tool schemas, token cost caps, and evals.
Concrete Client Deliverables
Production-ready Hybrid RAG Retrieval Engine with pgvector
Deterministic Agent Tool Runner with Zod validation & audit logging
Automated LLM Evaluation Harness measuring retrieval accuracy
Token Cost & Security Compliance Guide
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–4 Weeks Delivery
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Fractional CTO & Technical Leadership

Technical Candidate Vetting & Team Screening

Protect your company from $50k+ hiring mistakes with 90-minute architecture scenario interviews and blunt Pass/Fail scorecards.

The Problem & My Approach
Costly Hiring Mistakes & Unvetted Resumes
  • —Non-technical founders making expensive $50k–$150k+ bad engineering hires.
  • —Inability to evaluate candidate database knowledge, concurrency control, or code quality.
  • —Recruiter screenings failing to detect smooth talkers with zero production depth.
90-Minute Architecture Scenarios & Blunt Scorecards
  • Design real-world architecture scenarios matching the client's actual tech stack.
  • Conduct a live 90-minute technical interview probing database locks, API boundaries, and trade-offs.
  • Deliver a blunt Pass/Fail scorecard with explicit Hire/No-Hire recommendations.
Concrete Client Deliverables
Custom 90-Minute Technical Architecture Challenge Scenario
3-Page Candidate Technical Scorecard with domain risk analysis
Blunt Hire / No-Hire Recommendation Verdict
90-Day First-Quarter Technical Onboarding Focus Plan
Pricing Anchor & TimelinePer-Candidate Screening Fee or Monthly Retainer48-Hour Turnaround Per Candidate
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AI, Agents & Workflow Automation

AI Business Automation & Process Optimization

Replace manual operational labor with zero-hallucination document extraction pipelines, CRM enrichment, and automated workflows.

The Problem & My Approach
Manual Ops Labor & Fragile Zapier Hacks
  • —Manual tasks (invoices, lead qualification, support routing) burning hundreds of operational hours.
  • —Fragile low-code Zapier hacks failing silently and producing hallucinated data.
  • —Unmanaged AI integrations lacking audit trails and human-in-the-loop fallback bounds.
Zod-Validated AI Pipelines & Direct CRM Integration
  • Enforce strict Zod schemas for all AI outputs and tool calls to eliminate unformatted responses.
  • Connect AI pipelines directly to existing business software (HubSpot, Slack, Postgres, email).
  • Route low-confidence tasks to human review while recording complete execution logs.
Concrete Client Deliverables
Production-ready AI Business Process Automation Pipeline
Direct CRM, Slack, and Database API Integrations
Operations Dashboard & Append-Only Execution Audit Log
Operational Maintenance & Confidence Threshold Runbook
Pricing Anchor & TimelineFixed-Rate Package or Custom Scope2–4 Weeks Delivery
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Facing a fragile system or preparing for high traffic?

Let's evaluate your bottlenecks, secure your database transaction limits, and establish audit-ready isolation boundaries.

Inquire about an Audit