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WEB DEVELOPMENT · NEXT.JSReact · TypeScript

Slow sites lose sales. We build ones that don't.

Next.js builds with Lighthouse 90+ guaranteed — Core Web Vitals in the green, shipped in 3–16 weeks.

Lighthouse 90+
Guaranteed
< 2s LCP
Target
3–16 wk
Delivery
Web development services — Codex Devware
The Web Performance Reality

Speed isn't a feature. It's the product.

$89B
Global web development market in 2024, growing at 8.3% CAGR
Every business needs a web presence — most need it faster
53%
Of mobile users abandon sites that take more than 3 seconds to load
Google study — your slowest page is your biggest churn problem
7%
Conversion loss per additional second of page load time
Deloitte research — performance is a direct revenue lever
200M+
Websites affected by Google Core Web Vitals ranking signals
Bad CWV = lower rankings + lost organic traffic, every day
Codex Devware team reviewing Next.js vs WordPress performance
Why Not WordPress

WordPress is 2004 technology.
Your business runs in 2025.

43% of all websites run on WordPress. 43% of all websites are slow, insecure and held together by plugins that break on every update. We build on Next.js — the same framework used by OpenAI, TikTok, Twitch and Notion.

WP Lighthouse average: 38–52
Next.js Lighthouse: 90+ guaranteed
Plugin conflicts break sites monthly
Zero dependency on third-party plugins
SEO requires expensive paid plugins
Schema, sitemap, OG tags built-in by default
Shared hosting bottlenecks traffic
Vercel edge network — 99.99% uptime, global CDN
Page builder lock-in forever
Your code, your infra — always portable
Build on Next.js
What We Build

Six things we do better than anyone in Bangladesh

Every engagement starts with performance as a requirement, not an afterthought. Lighthouse 90+ is our floor, not our ceiling.

Marketing Websites & Landing Pages

High-converting brand sites and landing pages built with Next.js App Router — not WordPress or page builders. Every page ships with schema markup, Open Graph tags and a Lighthouse score above 90. Your competitors are on generic builders. You're on infrastructure.

  • Lighthouse 90+ guaranteed
  • Schema & Open Graph markup
  • Headless CMS integration
  • Conversion-focused design

Full-Stack Web Applications

From customer portals to complex SaaS platforms — Next.js 15, TypeScript and modern APIs. Auth systems (OAuth, JWT), real-time features, REST and GraphQL backends. MVPs in 6–8 weeks. Scalable platforms in 12–20.

  • Next.js App Router
  • REST & GraphQL APIs
  • Real-time WebSockets
  • OAuth & JWT auth

Performance Optimization

Already live but slow? We audit your entire site — bundle sizes, image optimization, render-blocking resources, server response times. Core Web Vitals in the green or we keep working. Average on our audits: Lighthouse 42 → 88.

  • Core Web Vitals audit
  • Bundle & image optimization
  • CDN & caching strategy
  • Server-side rendering

eCommerce Storefronts

Custom product catalogues, checkout flows and inventory systems — or headless WooCommerce with a Next.js front end. 70% of carts are abandoned globally. Our checkout flows are engineered specifically around reducing that number.

  • Headless WooCommerce
  • Custom checkout flows
  • Payment gateway integration
  • Inventory management

CMS & Content Systems

Your team edits content without touching code — ever. We build on Sanity, Contentful, Strapi or Payload CMS with custom field types, role-based access and editorial workflows designed around how your team actually works.

  • Sanity Studio setup
  • Custom field types
  • Editorial workflows
  • Role-based access control

Analytics & Conversion Tracking

GA4, Mixpanel, Tag Manager, Hotjar — every user action tracked. Event funnels, conversion goals, heatmaps and custom dashboards so your marketing team stops guessing and starts knowing exactly what to fix.

  • GA4 & GTM setup
  • Event & funnel tracking
  • Heatmaps & session replay
  • Custom reporting dashboards
Industries We Serve

From SaaS startups to established enterprises

The stack adapts per vertical. The performance standard — Lighthouse 90+, Core Web Vitals in green — never does.

SaaS & Software
Customer portals, dashboards, admin panels, multi-tenant platforms
eCommerce
Product catalogues, checkout optimisation, inventory management systems
EdTech
LMS platforms, course portals, student progress dashboards, quiz engines
Healthcare
Patient portals, appointment booking, HIPAA-aware data handling
Real Estate
Property listings, advanced search filters, agent CRM portals
Finance & FinTech
Dashboards, calculators, loan portals, secure client interfaces
Hospitality & Travel
Booking engines, availability calendars, hotel management systems
Media & Creative
Brand sites, editorial platforms, portfolio systems, blogs
Our Process

No surprises. No scope creep.

Every project follows the same four stages. You know exactly where it stands at all times — and so do we.

01

Discovery & Scoping

We map your goals, target users and technical requirements in a focused 90-minute kickoff. You receive a written scope document, fixed timeline and quoted price within 48 hours — no vague estimates.

02

Design System

Wireframes and Figma prototypes signed off before a single line of code is written. Mobile-first, conversion-optimised, component-by-component. You approve every screen before build begins.

03

Sprint Development

2-week sprints with weekly demos. You have access to a staging environment from Week 1. Every feature is reviewed and tested before it reaches production — no surprises at launch day.

04

Launch & Support

CI/CD deploy, Lighthouse verification, analytics handover and a 30-day post-launch support window. Your site's performance is our responsibility until you're fully confident it's yours.

Our Guarantee

Three commitments we put in writing.

Not promises in a sales call. Commitments in your contract. If we miss them, we fix it at no cost.

01

Lighthouse 90+ on delivery

Every project we deliver scores 90+ on Google Lighthouse. If the final build doesn't hit 90, we keep working at zero additional cost until it does. No exceptions.

02

Fixed price, fixed timeline

Your proposal is your contract. Price doesn't change unless you change the scope. Timeline doesn't move unless client review delays push it. 94% of our projects ship on time.

03

30-day post-launch support

For 30 days after go-live, we monitor, fix and support everything included in scope. Bugs, edge cases, unexpected issues — fixed at no extra cost. Baked into every project price.

90+
Lighthouse score
Our guaranteed minimum on every delivered project
40–60%
cost advantage
vs Western agencies — same Next.js, TypeScript quality
48 hrs
to proposal
Written scope, fixed timeline and quoted price
30 days
post-launch
Support window included in every project price
Our Work

Projects we've shipped

View all work
LMS Learning Management System
EDTECH · LMS PLATFORM
Learning Management System
BRC Organisation website
NGO · BRAND WEBSITE
BRC Organisation Platform
MiniShop Store
ECOMMERCE
MiniShop Store
Contest Platform
WEB APP
Contest Platform
ICT Contest System
EDTECH · WEB APP
ICT Contest System
Performance Optimization

Already live but slow? We fix that.

We audit your entire site — bundle sizes, render-blocking resources, server response times, image optimization, caching strategy. Core Web Vitals in the green or we keep working. Average improvement on our audits: Lighthouse 42 → 88.

Full Lighthouse & Core Web Vitals audit
Bundle analysis & code-splitting
Image optimization & lazy loading
CDN configuration & edge caching
Server response time & TTFB reduction
Get a free audit
Web performance optimization — Codex Devware
Client Reviews

What clients say after we deliver

Codex rebuilt our platform in 10 weeks. Lighthouse went from 41 to 96. Our Google Ads ROAS improved 180% in the first 60 days because the landing pages actually loaded before users gave up.

Rafiq Hassan
Founder, ShopDhaka

I've worked with 4 agencies before Codex. First one that didn't need to be managed. Delivered on time, on budget, and the code is maintainable by our in-house team without any hand-holding.

Sarah Mitchell
CTO, Veritas HR (UK)

We went from a 6-second mobile load time to 1.4 seconds. Bounce rate dropped 38% in month one. The free performance audit alone was worth making the call.

Tanvir Ahmed
CEO, NexEdu Bangladesh

Technologies

Built with tools the industry trusts

We don't chase trends. Every technology we use is battle-tested, well-documented, and chosen to serve your project's long-term success.

React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
React JS
React JS
Node JS
Node JS
MongoDB
MongoDB
JavaScript
JavaScript
Python
Python
AWS
AWS
Figma
Figma
Postman
Postman
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
Laravel
Laravel
MySQL
MySQL
Illustrator
Illustrator
PHP
PHP
PostgreSQL
PostgreSQL
Oracle
Oracle
Flutter
Flutter
Dart
Dart
How We Compare

Codex vs WordPress vs Webflow vs Freelancer

The choice isn't just about price. It's about what you can build, how fast it performs, and who owns the result.

Feature
Codex Devware
WordPress
Webflow
Freelancer
Lighthouse 90+ guarantee
?
TypeScript & modern stack
?
Fixed price & timeline
varies
Custom backend / API
plugins
?
Core Web Vitals in green
partial
?
30-day post-launch support
No vendor lock-in
Headless CMS integration
partial
partial
?
SEO indexing guaranteed
partial
?

✓ = Yes by default  ·  ✗ = No  ·  ? = Depends on individual  ·  “partial”/“varies” = limited or inconsistent

FAQ

Questions about web development

A marketing site takes 3–5 weeks. A full web app with backend typically takes 8–16 weeks depending on complexity. We give you a fixed timeline in the proposal — no moving goalposts or scope creep surprises.

Get Started

Your site is losing customers right now.

Book a free performance audit. We'll tell you exactly what's slowing your site down, what fixing it is worth in lost conversions, and how long it takes to fix. No obligation.