Manuel Sanchez — Fullstack Developer & QA

§ 01Experience3 roles · 2019 — 2026

Support track, parallel dev track

Full employment history available on request.

Dev trackSupport track

01Jul 2025 — Apr 2026

10 moDefect triage

Application Support Technician

Turo · Remote

Reproduced and documented defects for engineering: repro steps, device/OS matrix, logs — the same artefact a QA ticket is judged on.

Triaged incoming reports, separating client-side misuse from genuine platform defects before anything reached the engineering queue.
Covered a three-surface test matrix daily: iOS app, Android app and browser.
Exercised the flows that break hardest in production — identity verification, booking, payments.
Owned escalated cases end to end through resolution.

02Apr 2024 — Jun 2025

1 yr 3 moDevice testing

Help Desk / Technical Support

Alorica · Santo Domingo, DO

Bilingual (EN/ES) troubleshooting across a wide Samsung device and OS-version matrix — hardware, software and configuration.

Isolated reproducible faults from user error on devices that could not be handed to a developer.
Documented every case in the ticketing system and fed confirmed findings back into the knowledge base.

032019 — 2024

5 yrsDevelopment

Freelance Fullstack Developer

Clix Solution Consulting · Remote, contract

Five years building and maintaining production web applications end to end, on client engagements across healthcare, insurance and SaaS.

Node.js backends with ORM over SQL and NoSQL databases — the layer most API tests target.
Code review and debugging on existing codebases, not only greenfield work.
Cross-browser and responsive compatibility work on every delivery.
Shipped and still maintain several of those client sites. References and specific engagements available on request.

Commit activity — last 12 months

2343 contributions · @mssnzz

OctNovDecJanFebMarAprMayJunJulAugSepOct

LessMore

§ 02Own product1 · still shipping

The product I own

Built, shipped and still maintained by me.

Own product

Kalenday

An appointment-booking platform for service businesses — barbershops, salons, spas, clinics: public booking pages, staff calendars, client records, payments and reporting in one workspace. A React single-page app over a Node backend, with an omnichannel inbox over WhatsApp, Instagram, Messenger, email and SMS, and trainable AI agents that answer, qualify and book before handing over to a human.

Role: Developer — build and maintenance
Stack: React SPA · Node.js · Tailwind
Surface: Booking · CRM · payments · omnichannel inbox

kalenday.com

§ 03Open source3 public repos

Code you can read

Public repositories, not private claims.

playwright-page-audits

Pulled out of a client suiteRead the code

Reusable assertions for the defects that ship quietly: broken images, console errors, sideways scroll on a phone, skipped heading levels, external links handing over window.opener, a share card that previews blank. Every audit is tested twice — that it stays quiet on a clean page, and that it fires on one carrying the defect.

Playwright · TypeScript

bayer-dither

The portrait aboveRead the code

The renderer behind the portrait on this page, packaged on its own. An image or a line of text becomes a grid of square marks whose size carries the tone, drawn in the element's own colour so it follows the theme. Respects reduced motion and parks itself off-screen.

Canvas2D · TypeScript · no dependencies

personal-portfolio

The page you are onRead the code

This site. Server components, a contribution graph read straight off the public profile with no third-party embed, and 38 end-to-end tests across desktop and mobile viewports running in CI.

Next.js · React · Tailwind

§ 04Toolset16 entries

Day-one ready

Used on real users and real releases, not a course syllabus.

6 entries

Engineering

JavaScript: proficient
TypeScript: working
React / Next.js: proficient
Node.js / NestJS: backends, REST, ORM
SQL & NoSQL: schema and query work
Git: daily, including review

6 entries

QA & Testing

Cypress: end-to-end tests in JavaScript
Defect reporting: repro steps, device/OS matrix, logs
Triage: user error vs. reproducible platform defect
Cross-platform: iOS, Android, browser, Windows
Trackers: Jira, ServiceNow, Intercom, Kustomer
Regression windows: post-deploy and post-migration

4 entries

How I work

English C1: comfortable on client and stakeholder calls
Written-first: async handoffs, no meeting required
Repro-first: a bug report is only done when it reproduces
SLA discipline: queue hygiene and documented closure

2017 — PresentIn progress

B.Sc. Computer Science

Universidad Autónoma de Santo Domingo (UASD) — programming, systems, databases.

§ 05Contact9 ways in

Hiring for a remote engineering role?

Available immediately. I reply the same business day.

hola@manuelsanchez.io LinkedIn

Emailhola@manuelsanchez.io

Phone+1 809 319 0464

LinkedInmanuel-sanchez

GitHubmssnzz

Based inSanto Domingo, DR · UTC−4

EnglishC1 — client-ready

Working hoursUTC−4 · full US Eastern overlap

ArrangementRemote, full-time · available immediately

TargetFrontend · fullstack · QA automation

I build it.Then I try tobreak it.