Preston Wallace

AI ENGINEER

(805) 286 0588 – wallace.preston@gmail.com - prestonwallace.com
linkedin.com/in/prestonwallace - github.com/wallacepreston

Engineer building AI applications, agents, and enterprise platforms.
Owns architecture, integrations, delivery, and operational reliability end to end.

AI / LLM: Generative AI, LLM Application Development, RAG Pipelines, Vector Search, AI Agents, Agentic AI, Production LLM Systems, Workflow Automation, Prompt Engineering, Model Context Protocol (MCP), Evals, OpenAI, Claude, Gemini
Frontend: React, TypeScript, Next.js, tRPC, Tailwind, React Native, Vue
Backend: Node.js, GraphQL, REST, Prisma, PostgreSQL, MySQL, MongoDB, Python
Architecture & Cloud: Micro Frontends, BFF, Event-Driven Systems (SQS/Kafka), AWS, GCP, Docker, Kubernetes, CI/CD, IaC

EXPERIENCE

Software Engineer, LAB • MNTN • Feb 2023 - Oct 2026

• Nova Agent: Interface for launching & managing campaigns using chat, built with LangChain Managed Deep Agents.
• MNTN MCP: MCP server connecting AI clients to MNTN’s Public API for campaign, audience, budget and reporting tools.
• MNTN Express: Led 0→1 frontend rebuild, architecture, component library, CI/CD, and legacy integrations.
• AdDNA (AI/RAG): Bootstrapped React and Java Spring Boot RAG webscraping service for a 10-person team.
• Increased developer velocity using AI-assisted workflows and system design patterns.
• Deliverability (AI): Integrated Python-based ML forecasts and guardrails for campaign delivery; reported 40% revenue lift.
• Bootstrapped Campaign Suite monorepo with micro frontends and Backend for Frontend (BFF); owned IaC and CI/CD.

Back-End Engineer • MNTN • Jul 2021 - Feb 2023

• Flighted-budget data pipeline for scheduled and queued budget updates.
• API Optimization: Architected Node.js and GraphQL APIs, improving performance up to 90%.
• Built campaign and budget API contracts, validation, and contract tests.
• Added and managed Grafana alerts, synthetic monitors, and operational error context.

Full-Stack Software Engineer • Liquidity Services • Apr 2019 - Jul 2021

• Owned warehouse software; cut processing time 20%, saving approximately $2M/year.
• Improved inventory lookup efficiency ~85% and raised test coverage from 0% to 70%.

Lead SWE Instructor / Curriculum Writer • Multiverse, Fullstack Academy • 2019 - 2023

• Led 6 instructors, managed 10-cohort curriculum, and delivered 550+ live hours.

SELECTED AI SYSTEMS

LLM Contact Discovery System (2026)

Full-stack LLM-assisted discovery and enrichment pipeline with source-backed review.

AI Instructor Validation (2025)

AI-assisted validation with human review; reported 85% time savings (~5K hours/year).

AI Office Hours Automation (2025)

OCR and API workflow integrated with Salesforce; reported $500K+ annual efficiency gains.

ChatDTC Data/Document Chat (2023-24)

Production multi-tenant AI chat with guarded tools and $24K ARR; owned AWS infrastructure.

SPOKEN LANGUAGES - English, French, Spanish

INTERESTS - Real Estate Investing (single-family rental properties), Fitness (running, strength training)