Fletcher Keeley
Growth operator turned builder: AI systems, operations software, and the data infrastructure underneath them.

summary
10 years scaling DTC, SaaS, and digital brands, including a eight-figure ecommerce operation run end to end: full P&L ownership, ~10x revenue growth (seven to eight figures), eight demand channels, five agencies, and the annual growth model that set every target. Now builds the systems that work runs on: multi-agent LLM orchestration, custom MCP servers, RAG pipelines, a code-first data warehouse (BigQuery/dbt), and Next.js/FastAPI applications across ~10 deployed services. The operating experience means the software gets built for what the business actually needs.
experience
Founder & Principal Engineer · Tiehack Works
Jun 2025 – PresentBoutique consultancy building AI-powered marketing operations and growth infrastructure for early-stage DTC, SaaS, and digital brands. Sole architect and engineer across a multi-client platform.
- ›Built and operate a ~20-agent AI fleet coordinated by a director meta-agent (Anthropic Agent SDK), with enforced tool-use grounding, an LLM-as-judge quality gate, and full per-call audit logging.
- ›Engineered an autonomous overnight orchestrator that clears a task backlog into reviewable draft PRs unattended, behind a 7-layer defense-in-depth safety model.
- ›Built a code-first ecommerce data warehouse (BigQuery, 54 dbt models) with Markov and Shapley multi-touch attribution implemented from scratch in SQL.
- ›Shipped governed AI skill libraries that non-technical client teams run themselves, plus RAG pipelines, a custom MCP server, and ~10 Railway-deployed services with config-as-code, Sentry, and cross-project observability.
Vice President of Ecommerce · Cabana Life
Feb 2023 – Jun 2025Owned ecommerce growth strategy and complete P&L across acquisition, retention, and conversion.
- ›Grew revenue ~10x (seven to eight figures) leading a five-person in-house team and five specialist agencies, all held to targets from an annual growth model I built — documented as a case study.
- ›Ran eight demand channels end to end, opened an affiliate program that grew from 2% to 8% of revenue, and owned the full stack: Shopify, Klaviyo, Zendesk CS, Loop returns with Avalara tax, and the NetSuite + 3PL integrations behind 5-day nationwide delivery.
- ›Held an equity stake and operated with an owner's view of CAC/LTV/ROAS and profitability; built AI-powered marketing-calendar optimization and custom Shopify bulk operations via the Admin API, the early hands-on version of the engineering now central to Tiehack Works.
Digital Director · Cabana Life
Jan 2021 – Feb 2023- ›Built data-driven marketing systems and a coordinated marketing calendar from the ground up; launched new paid and organic growth campaigns and optimized site KPIs to hit YoY revenue goals.
Ecommerce Manager · Cabana Life
Dec 2019 – Jan 2021- ›Owned day-to-day ecommerce operations and annual revenue targets; managed SEO, paid media, and UX specialists.
Ecommerce Consultant · FMK Digital (self-employed)
Dec 2018 – Dec 2019- ›Ecommerce and performance-marketing strategy for early-stage DTC brands.
Delivery & Insights Manager · FASTG8, Inc.
Sep 2017 – Nov 2018- ›Employee #7 at a paid-media agency; ran omni-channel programs across 8+ national brand accounts including Fjällräven, CorePower Yoga, Smith Optics, Black Diamond Equipment, Mammut, DECKED, and Saxx, spanning social, search, programmatic display, advanced TV, and Amazon.
Search Engine Marketing Manager · webShine
Jun 2016 – Sep 2017- ›Managed Google AdWords, Bing, and SEO for 25+ clients as direct account manager.
selected systems
Maturity labeled honestly: [production] deployed and operating · [r&d] substantial self-hosted system, not commercially shipped. Each links to a full case study.
Running an Eight-Figure DTC Brand [operator flagship] — The business above, mapped as an architected system: eight demand channels, five agencies, full Shopify ownership, and the annual growth model that set every agency's targets.
Multi-Agent Operations Platform [production] — ~20 domain agents, 115 tools, enforced tool-use grounding, LLM-as-judge quality gate, custom MCP bridge. ~50K lines, 5 services.
Coworking Operations Platform [production] — Full backend for a multi-location coworking business: CRM, inventory, billing, a from-scratch email platform, and software-controlled physical door access (Kisi, HMAC-verified webhooks).
Autonomous Overnight Orchestrator [production] — Ralph-loop driving the Claude Code CLI unattended; draft-PR-only output behind 7 safety layers, 6 brakes, and a post-exit verification gate.
Ecommerce Data Warehouse [production] — BigQuery + 54 dbt models; Markov removal-effect and Shapley attribution in pure SQL with Monte Carlo sampling; cohort LTV with maturity-bias correction.
Claim-Level RAG Knowledge Base [production] — ~8,240 typed, confidence-scored claims in Postgres/pgvector (HNSW), Voyage embeddings, semantic search as a SQL function.
Agentic Deep-Research Engine [r&d] — 13-node LangGraph state machine, human-in-the-loop gates, checkpoint/resume, hybrid local/cloud model routing for ~10x cost reduction.
Client-Operated AI Skill Libraries [production] — Governed, draft-only Claude skills non-technical client teams run themselves, with self-refining setup/polish meta-skills.
Closed-Loop Ad Optimization [production] — Every campaign change logged as a hypothesis and auto-graded against real outcomes at 3/7/14-day checkpoints.
education
B.A. Economics · Colorado College
2016Software-engineering self-study · Launch School (structured program) + self-directed
2025- ›Python, APIs, and systems-architecture fundamentals; the formal grounding for the engineering now shipped through Tiehack Works.
skills
Languages: Python · TypeScript/JavaScript (Node) · SQL · Bash · React
AI/ML: Multi-agent orchestration (Anthropic Agent SDK, LangGraph) · MCP server development · RAG & hybrid retrieval · pgvector/Qdrant · Voyage/OpenAI embeddings · self-hosted LLMs (Ollama, Qwen) · LLM-as-judge · token-budget management
Backend & data: FastAPI · Next.js (App Router) · PostgreSQL/Supabase (RLS) · BigQuery + dbt · GCP (Cloud Run, Workflows) · Docker · Railway · GitHub Actions · Sentry
Ecommerce & growth: Shopify Admin/GraphQL & Liquid · Google Ads · GA4 · Klaviyo/Resend · Zendesk · ShareASale · NetSuite/3PL integration · HubSpot · multi-touch attribution · CAC/LTV/ROAS · P&L management · agency & team leadership