You will get Ship an MVP slice — auth + one core workflow
Project details
You get a deployed web app with login and one real user workflow — not a prototype slide deck.
This package is for founders who need an MVP slice shipped into their own GitHub/GitLab with a staging URL they can click through.
What Standard includes:
• Kickoff with written user stories (max 8) locked before build
• Email/password or magic-link auth (OAuth as an add-on)
• One primary workflow end-to-end (create → list → update / status change)
• Basic role gate if needed (user vs admin)
• Responsive UI with reasonable empty/error states
• Seed data + README
• Deployed staging URL + source in your repo
• Happy-path E2E for the core workflow
Stack default: Next.js / React + your BaaS (Firebase/Supabase) or a Node API. Plus can add a light React Native companion or a second workflow.
Not included: full marketplaces, complex billing, native store apps, brand systems from scratch, or Colombia health/gov APIs.
Acceptance: locked stories demoed, staging URL live, README covers run + env vars, happy-path E2E green, zero open P0 bugs on the punch list. New stories after lock = new milestone.
Principal engineer (15+ years). Bilingual EN/ES. You pay for a signed-off outcome — not hours.
This package is for founders who need an MVP slice shipped into their own GitHub/GitLab with a staging URL they can click through.
What Standard includes:
• Kickoff with written user stories (max 8) locked before build
• Email/password or magic-link auth (OAuth as an add-on)
• One primary workflow end-to-end (create → list → update / status change)
• Basic role gate if needed (user vs admin)
• Responsive UI with reasonable empty/error states
• Seed data + README
• Deployed staging URL + source in your repo
• Happy-path E2E for the core workflow
Stack default: Next.js / React + your BaaS (Firebase/Supabase) or a Node API. Plus can add a light React Native companion or a second workflow.
Not included: full marketplaces, complex billing, native store apps, brand systems from scratch, or Colombia health/gov APIs.
Acceptance: locked stories demoed, staging URL live, README covers run + env vars, happy-path E2E green, zero open P0 bugs on the punch list. New stories after lock = new milestone.
Principal engineer (15+ years). Bilingual EN/ES. You pay for a signed-off outcome — not hours.
What's included
| Service Tiers |
Starter
$3,500
|
Standard
$7,000
|
Advanced
$12,000
|
|---|---|---|---|
| Delivery Time | 10 days | 15 days | 20 days |
Number of Revisions | 1 | 1 | 2 |
Number of Pages | 1 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
About Carlos
Principal Engineer | Fixed-Scope Full-Stack, Hardening & Consulting
La Union, Colombia - 9:48 pm local time
What I sell
• AI Code Hardening: take vibe-coded / AI-generated repos to tested, secured, deployable code with a walkthrough
• MVP Slice: auth + one real workflow, deployed to your repo
• Launch Landing (EN/ES): bilingual marketing sites that convert
Stack: TypeScript, React, Next.js, Angular, Node.js, React Native — delivered with a Cursor-powered AI development process. You pay for signed-off outcomes and acceptance criteria; AI is how I hit the ETA.
Background: Senior Software Engineer at Roca Alliances (May 2026–present) and Principal Engineer at Vital Link 360 (parallel); previously Software Architect (SaRA Health), Senior Software Developer (VMware — React/K8s/Backstage), Frontend Architect (Zaga Labs). Bilingual English / Spanish (native).
Best fit: founders and product teams who need a senior to harden or ship a clear slice. Prefer milestone / Project Catalog work with locked scope.
Not a fit: Colombia healthcare/gov integrations (RIPS, ministry APIs) and undefined “build everything” retainers.
Steps for completing your project
After purchasing the project, send requirements so Carlos can start the project.
Delivery time starts when Carlos receives requirements from you.
Carlos works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff: lock stories before build
Turn your goal into written user stories (max 8). Scope locks before coding starts.
Build auth + the core workflow
Ship login and the primary create-list-update flow with responsive UI and basic roles if needed.