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Senior Software Engineer
Spenser Wellen
Start with people • solve with code • scale with care
Works
ADONIC
AI Vision
Secure Uploads
Stripe
SaaS
Web App
VADO • Home Touring AI Prop-Tech
Astro
Next
Node
SQL
Tailwind CSS
Twilio
React Native via Ignite
OpenAI via Python
Gather • AI News Aggregator
Next
Google Gemini AI
Llama Index
RAG & Vector Store
Tailwind CSS
AIWeek Chatbot
NEXT
OpenAI
Vector Store
AWS Cloud Services
Strapi CMS
Away From Office
React
Mailgun
Claude AI
Google Workspace
Functional Intense Training • Gym Coworking
Svelte
Calendly
Firebase
Apollo GraphQL
Material UI
Sendgrid
TRVLR • Travel Blogging Platform
Gatsby
Contentful CMS
JAM Stack
Chakra UI
Explor • Travel Destination Finder
React
Ghost CMS
JAM Stack
Styled Components
Collaborations & Brands
Behind the scene and beyond the screen—this is how I build
Skills & Tools
Full-Stack Engineering
Your apps should scale like AWS Day One code and feel as smooth as a 90%+ Lighthouse score, I architect end-to-end systems—micro-services, event buses, reactive UIs, optimized data layers—that handle millions without blinking
01 API & Data-Model Design
REST and GraphQL, event-driven micro-services
02 Modern Styled Frontends
Pixel-perfect, responsive, accessible UIs, Tailwind CSS, DaisyUI
03 React / Svelte / Vue / Next UX Delivery
Pixel-perfect frontends with accessibility and animation
04 Event-Driven Micro-services
Resilient architectures for async-first systems
DevOps & Cloud Solutions
19M+ unique engagements don’t ship themselves, I automate with CDK, Lambda, and container pipelines so releases reach prod safely, 24/7, no pager fatigue
01 CI/CD & IaC
CDK, GitHub Actions, automated rollouts
02 Serverless & Container Orchestration
Lambda, ECS, S3, scalable infrastructure
03 Cost & Performance Tuning
Profiling, caching, load management at scale
Security & Optimization
"Serving Fortune 500 partners and public-sector audiences means zero tolerance for downtime or breaches, I harden apps (OAuth2, OWASP, SOC2 paths) and squeeze every millisecond—with proven 50→90% Lighthouse turnarounds
01 Secure Code Reviews & Pen-Testing
Auth, ACL, XSS/SQLI protection, session handling
02 Performance Profiling & Caching
Bundle optimization, CDN, lazy loading
03 Accessibility & SEO Engineering
WCAG, metadata, schema, SSR
Web, Mobile & AI Experiences
Great ideas die behind clunky UIs so I craft responsive PWAs, e-commerce flows, and AI-enriched features (RAG search, LlamaIndex chat) that delight users and grow revenue
01 Cross-Platform Apps & PWAs
React Native, service workers, push notifications
02 AI/LLM Integrations
RAG, LlamaIndex, vector search, real-time chat
03 E-Commerce & Conversion UX
Checkout flows, inventory APIs, mobile-first design
Coding with purpose, built for impact
About Me
Dream It • Code it