Preston Wallace
FULL-STACK AI ENGINEER
(805) 286 0588 – wallace.preston@gmail.com - prestonwallace.com
linkedin.com/in/prestonwallace - github.com/wallacepreston
Building AI-powered systems and scalable platforms from 0→1 to production.
Leading projects end-to-end with strong ownership across architecture and delivery.
Frontend: React, TypeScript, Next.js, tRPC, Tailwind, React Native, Vue
Backend: Node.js, GraphQL, REST, Prisma, PostgreSQL, MySQL, MongoDB, Python
Architecture: Micro Frontends, Backend-for-Frontend (BFF), Event-Driven Systems (SQS/Kafka)
Cloud & Infra: AWS, GCP, Docker, Kubernetes, CI/CD, Terraform, IaC
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), Eval Loops, OpenAI, Claude, Gemini, n8n
EXPERIENCE
Senior Full-Stack Software Engineer (TypeScript/React) - MNTN (Full-Time, Remote) | Jul 2021 - Present
- MNTN Go: Led 0→1 platform rewrite; defined architecture, bootstrapped repo, built CI/CD, and integrated with legacy systems while establishing system boundaries and API contracts for scalable, loosely coupled services
- Owned AdDNA (AI/RAG) across 10 engineers: designed pipeline; reduced campaign build time and churn (~15%)
- Deliverability (AI): Built predictive budget-spend system, increasing revenue by 40% and decreasing support tickets.
- Introduced micro frontends + BFF, reducing merge conflicts ~50% and improving team velocity
- Architected Node + GraphQL APIs improving performance up to 90%
- Designed & owned CI/CD pipeline + infrastructure (Docker, IaC, AWS/GCP), reducing test-build-deploy time by 40%.
- Doubled developer velocity using AI-assisted workflows (background agents) and strong system design patterns
- Bootstrapped, tested & shipped flighted budgets feature, boosting seasonal ad revenue up to 30%.
Full-Stack Software Engineer (Node/Vue/REST) - Liquidity Services (Full-Time, Remote) | Apr 2019 - Jul 2021
- Owned development of warehouse management system, reducing processing time 20% and saving ~$2M annually
- Designed and implemented internal inventory data-collection tool, improving data lookup efficiency by ~85%
- Defined API patterns and improved system reliability, increasing test coverage from 0% → 70%
- Led integration with external systems (e.g., Stripe), eliminating sensitive data storage and improving security posture
Lead SWE Instructor / Curriculum Writer - Multiverse, Fullstack Academy (Part-Time, Remote) | 2019 - 2023
- Wrote & delivered 12-week SWE bootcamp (Google, Verizon, Barclays), generating $10M+ revenue, achieving +70 NPS.
- Led 6 instructors, managed 10-cohort curriculum, and delivered 550+ hours content of live code demo on Web Dev
Network Admin, Assistant Manager, Web Dev - K.Jons Diamonds & Gems Atascadero, CA | until 2018
- Designed and managed major version of company e-commerce site, with 1000+ items, and total inventory value of $800K.
- Increased traffic to site by 100%, and landed site first-position worldwide in Google SERP listings for keywords.
SELECTED AI SYSTEMS
LLM Contact Discovery System (2026)
Built full-stack LLM-powered scraping pipeline to identify and enrich sales prospects across target orgs.
AI Instructor Validation (2025)
Real-time search + webhook system for access control; delivered 85% time savings (~5K hours/year)
AI Office Hours Automation (2025)
OCR + API system integrated with Salesforce; generated $500K+ annual efficiency gains (400% ROI)
ChatDTC Data/Document Chat (2023-24)
Deployed production AI chat platform with $24K ARR, including infra ownership (EC2)
SPOKEN LANGUAGES - English, French, Spanish
INTERESTS - Real Estate Investing (single-family rental properties), Fitness (running, strength training)