Johnisaac Lutwama

Frontend • Middle • English: C2
7+ years exp
4+ projects
Python
JavaScript
Accessibility & Semantics: 5/10
UX & Visual Polish: 5/10
Responsive & Cross-browser: 4/10
Active 9 hours ago
Invite to interview
Message
Download CVCV
Overview
Technical skills
Roles

Overview

Frontend-focused web developer at a middle level specializing in building production-ready static websites with polished client-side interactions. The strongest proven skill is end-to-end client-side booking and UX work, demonstrated by the booking flow, validation, spinners, toast feedback and EmailJS integration in Wix-Car-Rental/index.html. There is little to no public evidence of component-based frameworks, automated tests, server-side architecture, or advanced async state management like request cancellation or optimistic updates.

Technical skills

Python• Staff • 7y+ • 4 projects
JavaScript• Middle
Frontend
Frontend
Bootstrap
DevOps
Vercel
AWS• 2 projects
Databases
MySQL• 7y+ • 4 projects
Middle Frontend Developer Confidence: Medium App Engineer
Frontend-focused web developer at a middle level specializing in building production-ready static websites with polished client-side interactions. The strongest proven skill is end-to-end client-side booking and UX work, demonstrated by the booking flow, validation, spinners, toast feedback and EmailJS integration in Wix-Car-Rental/index.html. There is little to no public evidence of component-based frameworks, automated tests, server-side architecture, or advanced async state management like request cancellation or optimistic updates.
UI Component Architecture
2/10
How interface parts are built
Monolithic, DOM-driven UI with purposeful helper functions but no component boundaries or reusable component architecture.
Evidence
JohnIsaacKIZZA/PortFolio-JohnIsaac/assets/js/main.js: helper utilities (select, on, scrollto) that operate on raw DOM JohnIsaacKIZZA/Wix-Car-Rental/index.html: selectVeh and related DOM-manipulation functions (vehicle selection implemented as imperative DOM updates)
Responsive & Cross-browser
4/10
Works on all screens and browsers
Responsive design is explicitly handled with CSS tokens, grid/flex layouts and multiple breakpoints; mobile navigation and layout fallbacks are present.
Evidence
JohnIsaacKIZZA/Wix-Car-Rental/index.html: inline <style> includes clamp(), CSS grid, and media queries for multiple breakpoints JohnIsaacKIZZA/PortFolio-JohnIsaac/assets/css/style.css: @media rules adjusting header/main layout and mobile nav behavior
Performance Optimization
3/10
Speed of the interface
Some pragmatic frontend performance techniques are used (intersection observer, image fallbacks, sticky elements) but no measured optimization or build-level splitting.
Evidence
JohnIsaacKIZZA/Wix-Car-Rental/index.html: IntersectionObserver 'reveal' implementation for on-scroll animations JohnIsaacKIZZA/Wix-Car-Rental/index.html: image onerror fallbacks and sticky booking card for perceived performance and stability
Accessibility & Semantics
5/10
Usable for everyone
Concrete accessibility effort is visible: semantic sections, labelled inputs, ARIA attributes and keyboard support on interactive custom controls.
Evidence
JohnIsaacKIZZA/Wix-Car-Rental/index.html: vehicle cards use tabindex, role="button" and aria-pressed with keyboard handlers JohnIsaacKIZZA/PortFolio-JohnIsaac/index.html: progress bars with role=progressbar and clear landmark/heading structure
State Management & Data Flow
4/10
Managing data in the app
Client-side state flow is explicit and correct for the scope (selection state, derived cost summary, form validation and async send with UI state toggles); lacks advanced async discipline like cancellation or optimistic rollback.
Evidence
JohnIsaacKIZZA/Wix-Car-Rental/index.html: selVeh object, selectVeh, updateSummary, getDays and sendBooking with try/catch and UI spinner/disable handling JohnIsaacKIZZA/PortFolio-JohnIsaac/assets/js/main.js: scroll-linked state (navbarlinksActive) and smooth-scrolling helpers that manage navigation state
UX & Visual Polish
5/10
Look and feel quality
Strong visual polish and UX details: spinners, toasts, smooth scroll, reveal animations and graceful error messages improving perceived performance and clarity.
Evidence
JohnIsaacKIZZA/Wix-Car-Rental/index.html: toast(...) implementation, button spinner elements, sendBooking UI states and clear error flows JohnIsaacKIZZA/PortFolio-JohnIsaac/assets/js/main.js: smooth scroll, typed effect and AOS-based reveal hooks
Industries
Travel & Tourism• Middle
Technologies
Frontend
JavaScript• Middle
Vercel
Bootstrap
Design• mentioned only
Recommendations
  • Build and maintain small business websites with client-side booking/lead capture flows and third-party integrations (email, maps, payments).
  • Convert the existing DOM-driven pages into componentized React (or similar) components to improve reuse, testability and long-term maintainability.
  • Focus on adding automated tests (unit and E2E) and CI checks plus measured performance audits (LCP/INP) for higher engineering confidence.
  • Improve async-state patterns (abortable requests, debouncing, optimistic updates with rollback) for any future dynamic integrations or offline-capable features.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories:
PortFolio-JohnIsaac Wix-Car-Rental Spark