John Benedict SantosFull Stack Developer & UI Engineer

Web and mobile apps engineered to a production standard.

I build the whole thing — web app, mobile app, API, database, deploy. Seven years turning messy requirements into clean, scalable products that hold up once real users arrive.

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Years Experience
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Projects Shipped
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Happy Clients
Skills: Frontend Engineering, React & Next.js, Node.js & Express, TypeScript, PostgreSQL & MySQL, REST & GraphQL APIs, React Native & Flutter, Tailwind CSS, WebSockets & Realtime, Docker & CI/CD, UI/UX & Design Systems, Decoupled Architecture
Selected Work

Real builds,
every one shipped.

Security tooling, SaaS platforms, an AI-assisted service portal, mobile apps and commerce work. Every one has a full case study with the real interface, and a link to the live build where there is one.

SecurePeek — Security Tooling
Security Tooling

SecurePeek

A full-stack audit platform that scans any public domain for SSL health, security headers, HTTPS configuration, server exposure, and common web vulnerabilities — then turns the raw findings into a single score with fixes a site owner can actually act on.

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AuraWash — Multi-Branch SaaS
Multi-Branch SaaS

AuraWash

A SaaS platform running real laundry businesses: multi-branch management, live order tracking, driver dispatching, customer loyalty, a digital wallet, revenue analytics, and role-based access across owner, branch staff, and driver.

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KwentaTayo — Finance SaaS
Finance SaaS

KwentaTayo

Cloud-based finance and budget tracking SaaS with an offline-first mobile app. Entries are recorded locally and sync once a connection returns, so nothing is lost when the signal drops.

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AquaLit Pools — Service Platform + AI
Service Platform + AI

AquaLit Pools

Website and web application for a pool repair and maintenance business, with separate portals for admin, customer and technician — plus an AI agent that handles customer enquiries in conversation.

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B2B Mobile + AI Coach

Robodyx

B2B mobile app for tracking training stats, with AI food logging, a conversational coach the trainee can talk to, and an admin portal for the operators behind it.

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What I Can Do

One developer, the whole stack.

No handoffs between a designer, a frontend dev, and a backend dev who never speak to each other. The interface, the API, and the deploy pipeline come from the same head.

Frontend Development

Pixel-perfect and accessible

Backend & APIs

REST and GraphQL, auth included

Database Design

Schema design and query tuning

UI/UX Design

Wireframes to design systems

Free Strategy Call

DevOps & Deployment

CI/CD, Docker, zero drama

Mobile Development

One codebase, both stores

Build Better Together
How I Work

From idea to production in four phases.

A structured flow so the project moves without friction — defined timelines, constant feedback, and no black-box weeks where you have no idea what is happening.

01Phase

Discovery

We align on the goal, the audience, and the must-have features before a line of code exists. You leave the call with a fixed scope and a date.

Next
02Phase

Design & Architecture

Wireframes, visual direction, data model, and stack decisions — settled and approved, so the build phase has zero guesswork left in it.

Next
03Phase

Build

Working increments every few days on a real staging URL. Clean code, 60fps interactions, SEO and accessibility handled as I go, not bolted on.

Next
04Phase

Launch & Handoff

Production deploy, final performance pass, and documentation clear enough that another developer could pick it up tomorrow. No lock-in.

Ship
Tech Stack

The tools I actually reach for.

Not a logo wall of everything I have ever opened — five areas, and the specific things I work in every week. Hover a row to bring it forward.

01

Frontend & Mobile

Interfaces built for adoption — fast, accessible, and consistent across web and native.

02

Backend & APIs

REST and WebSocket layers, auth, and services that stay predictable once traffic is real.

03

Databases

Schema design, indexing, and query tuning — relational, document, and managed platforms alike.

04

DevOps & Infra

Pipelines and hosting set up so shipping is boring and rollbacks are cheap.

05

Tools & Automation

The glue around the build — API testing, living docs, and workflow automation.

Open Source

GitHub activity.

Live from GitHub
@jayveedev-alt

Most client work sits in private repositories — this is the commit history behind it.

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Frequently Asked

Answers before we start.

Timelines, deliverables, and how the money works — settled up front, so the first call is about your product instead of the paperwork.

It depends on scope, but a polished marketing site with animation runs 1–3 weeks from design to production deploy. A full SaaS build with auth, dashboards, and a real data model is typically 6–12 weeks, split into shippable milestones so you see working software every few days.

Both. If you already have a brand book, Figma file, or design system, I build to it exactly. If you do not, I handle the visual direction myself — type scale, palette, and component system — and you approve it before a single production component gets written.

Your goal, who the product is for, and any references you like. That is genuinely enough for the discovery call. Content, assets, and integration credentials can land later — I scaffold with realistic placeholders so the build is never blocked waiting on copy.

Fixed-scope pricing agreed up front — no hourly surprises. Standard split is 50% to start and 50% on delivery; longer builds are billed per milestone. Scope changes get quoted separately before any extra work happens, so the number you approve is the number you pay.

You get the repository, clean documentation, and a walkthrough of the deploy pipeline — no lock-in. Bug fixes on delivered work are covered for 30 days, and I am available for ongoing feature work or a retainer if you want me to keep shipping.

Ready When You Are

Have a project in mind?
Let's talk.

A high-end landing page, a rebuild with real motion, or a working SaaS product. Pick a time below, or drop me a note — I reply within 24 hours.

Schedule a Meeting

Pick a time

30-minute discovery call — free, no pressure.

Or Send a Message

Drop me a note