Alan JairSENIOR FRONTEND ENGINEERSenior Frontend Engineer6+ years of experienceReal products, in production and with real users. I'm involved from architecture to launch, so what ships works and stays maintainable.
Ground-up architecture for the payroll SaaS now used by several companies, and for the attendance app that verifies real location and time with native Android and iOS modules.
ERP built from scratch to manage branches, payroll, employees and more, speeding up the client's payroll process.
Online store, user accounts and course catalog, plus an admin panel that eliminated the association's manual processes. Built end to end, with zero production incidents.
LMS for educational institutions: course creation, shared content, assignments, timed exams and grading. I worked on its development, shipping new features, improvements and bug fixes. Alongside it we built CertificAla, a separate SaaS for issuing certificates in bulk, with its own certificate and badge editor, teams and paid plans by volume.
Bilingual website with an admin dashboard where the church edits all of its content: audio and video sermons, news, events, locations and attendance statistics. Their team keeps it up to date without relying on a developer.
Senior Frontend Engineer with over 6 years of experience building web and mobile applications. I've shipped apps to the Apple App Store and Google Play Store. Specialized in React, Next.js and React Native, with experience in frontend architecture, technical leadership and products built from scratch. I currently use AI tools (Cursor, Claude) to speed up development without compromising quality.
From your website and social media to the system that runs your operations. Tell me what you need to solve and I'll propose the most direct way to do it.
Fast, clear websites with direct WhatsApp contact, ready to show up on Google when people search for you.
Monthly content for Facebook and Instagram: posts, reels and designs with your brand's look, a clear calendar and a results summary every month. It can be bundled with your website in a single plan.
Admin panels, course or service sales, online payments and CMS. Everything you do by hand today could run on its own.
iOS and Android apps with React Native, from the first design to publishing on the App Store and Google Play.
I join your team as a senior frontend developer per project, by contract or full-time. I help define the architecture, new features and code standards.
Tell me what you have in mind: a new website, social media content, a system or an app. I'll reply personally.