# Mark Valdez - Software Architect & Senior Full-Stack Engineer

> Software architect and senior full-stack engineer with 16+ years of experience building SaaS platforms, AI-native applications, and scalable cloud infrastructure.

## About
Based in San Francisco, CA. Specializing in AI-native application development, Ruby on Rails, TypeScript, React, Next.js, and AWS cloud architecture. Expert in spec-driven development methodologies and AI engineering workflows.

## Navigation
- Home: https://valdezm.com
- About: https://valdezm.com#about
- Experience: https://valdezm.com#experience
- Projects: https://valdezm.com#projects
- Skills: https://valdezm.com#skills
- Education: https://valdezm.com#education
- Recommendations: https://valdezm.com#recommendations
- AI Engineering Blog: https://valdezm.com/ai-engineering
- Contact: https://valdezm.com#contact

## Recent Blog Posts

### Spec-Driven Development with GitHub Spec-Kit: Planning Phase
Published: December 25, 2024
> A comprehensive guide to implementing spec-driven development methodology using GitHub's spec-kit. Learn how to create detailed specifications before writing code to catch issues early and improve collaboration between developers and AI tools.
Read more: https://valdezm.com/ai-engineering/spec-driven-development

### Building a Constitution for Spec-Kit
Published: November 12, 2025
> Learn how to create a foundational governance document that guides all development decisions in your spec-driven projects. Discover the structure, best practices, and real-world examples of effective project constitutions that enable scalable development.
Read more: https://valdezm.com/ai-engineering/spec-kit-constitution

### Documentation Coverage: The New Code Coverage
Published: October 4, 2025
> Why your docs will matter more than your tests in the AI-first era. Exploring the shift from code coverage to documentation coverage as a quality metric for modern software development with AI assistance.
Read more: https://valdezm.com/ai-engineering/documentation-coverage

## Key Projects

### GoodBruce.com
AI-native marketplace where users sell items via SMS or chat. Rails 8, Next.js 15, React 19, TypeScript, AWS Bedrock, Langflow, Cloudflare Workers AI agents with MCP tools.

### Awesome Communication
Curated resources for developers to improve technical communication skills.
GitHub: https://github.com/valdezm/awesome-communication

## Technical Skills
**Languages & Frameworks:** TypeScript, JavaScript, Ruby, SQL, Python; React, Next.js, Node.js, Bun, Fastify, tRPC, Prisma, Kysely, Rails
**Data & Cloud:** PostgreSQL, MySQL, Redis, MongoDB; AWS (EC2, RDS, DMS, S3, CloudFront, Bedrock, VPC), Cloudflare Workers, Google Cloud, Docker, GitHub Actions
**Security, Integration & AI:** Multi-tenant RBAC, PostgreSQL RLS, WorkOS, PHI audit logging, EDI X12, Stripe, Twilio; Claude Code, Codex, LangChain, Langflow, MCP

## Experience Highlights
- **Senior Software Engineer / Platform Architect** at SeniorCRE (February 2026-Present): secure multi-tenant platform on AWS
- **Founder** at GoodBruce (March 2025-January 2026): AI-native marketplace platform
- **Senior Software Engineer** at Upright Labs (2023-2025): marketplace API integrations
- **Senior Software Engineer** at Advekit (2021-2023): mental healthcare platform, EDI X12 insurance claims
- **Principal Software Architect** at Geosite (2018-2019): satellite imagery SaaS, before Y Combinator
- **16+ years** of professional software development experience

## Education
University of Washington - Bachelor of Science, Computer Science and Systems. NSF scholarship recipient.

## Contact
LinkedIn: https://www.linkedin.com/in/markavaldez/
GitHub: https://github.com/valdezm
Email: hello@valdezm.com

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Last updated: November 3, 2026
Portfolio: https://valdezm.com