Senior Conversion Rate Website Development DevelopersConversion Rate
We build websites that turn visitors into customers. Our senior engineers code for speed, A/B testing, and measurable lift.
IRPR provides senior conversion rate website development developers who build high converting sites using Next.js, React, and Shopify Plus. We optimize every page for load speed, mobile experience, and clear calls to action.
Each project ships a fully functional website in 12-14 weeks with a fixed price from $80K to $250K. Our engineers integrate analytics tools like Google Optimize, Hotjar, and Sentry to measure and iterate on conversion metrics.
We work with CRO managers who need dedicated developers, founders launching a new product and needing a conversion focused landing page from day one, and ecommerce teams migrating to a faster, higher converting storefront. Also enterprise product owners replacing legacy sites with modern, data driven architecture.
Types of software we ship.
Conversion optimized landing pages
High speed landing pages built with React and Next.js, integrated with Google Optimize for A/B tests. Loads under 1.5 seconds.
Ecommerce conversion site redesign
Full Shopify Plus or custom headless rebuild focused on checkout flow, cart abandonment recovery, and product page UX. Measured lift in CR.
SaaS signup funnel development
Multi step registration flows with Stripe billing, free trial logic, and email triggers via SendGrid. Optimized drop off at each step.
Lead generation microsite
Dedicated campaign microsites with HubSpot CRM integration, dynamic forms, and A/B testing variants. Track conversions from ad click to closed deal.
Conversion focused blog or content hub
Custom content management system that prioritizes CTR, scroll depth, and related product recommendations. Admin on Strapi or Sanity.
Pricing page optimization
Interactive pricing tables with real time cost calculators, comparison toggles, and social proof widgets. Tested against static layouts for lift.
Web app onboarding flow
Guided setup wizards with progress tracking, tooltips, and success animations. Reduce time to value and increase activation.
Cross device conversion site
Responsive sites that maintain CRO principles across desktop, tablet, and mobile. Use CSS Grid, lazy loading, and Intersection Observer.
We build for every business type.
ecommerce brands
B2B SaaS companies
healthcare practices
fintech startups
local services and agencies
Why senior conversion rate website development developers matter for CRO
A senior engineer brings deep knowledge of frontend performance, A/B testing infrastructure, and user psychology to every project.
Senior conversion rate website development developers understand that every millisecond of load time and every pixel of layout change can shift conversion by double digits. They write clean, modular code in React and Next.js that allows product managers to run A/B tests without breaking the site. They also set up server side testing with Google Optimize and VWO to avoid flicker.
Junior developers often skip critical details like lazy loading images, preloading hero fonts, or image compression. Our seniors enforce a 90+ Lighthouse performance score before any release. They also build analytics hooks from day one so you can measure form submissions, cart adds, and signups without a separate retrofit. This approach saved one SaaS client 12 weeks of rework.
The difference between generic web developers and senior conversion rate website development developers
Not every developer knows how to code for conversion. Here is what changes when you hire the right team.
Generic web developers focus on delivering a design that looks good in Figma. Senior conversion rate website development developers focus on delivering a site that converts in production. They think about load times, mobile first UX, and A/B test infrastructure before writing a single line of CSS.
IRPR senior developers build with tools that support continuous improvement. Every site includes Google Tag Manager container, Hotjar session recording, and a structured data layer for custom events. This lets your team run experiments without needing a new deployment. One travel client saw a 23% lift in bookings after the first round of tests.
- builds from static mockups without considering A/B test setup
- optimizes for design approval not conversion metrics
- uses one size fits all tech stack without CRO tool integration
- ships code with 50+ Lighthouse score
- requires separate budget for analytics integration
- no ongoing experimentation support after launch
- starts with A/B testing infrastructure in every project
- targets 90+ Lighthouse performance score as a hard requirement
- pre-integrates Google Optimize, Hotjar, and custom event tracking
- writes modular components that support multivariate tests
- includes analytics setup in the fixed price, no extra cost
- delivers a site ready for continuous CRO after handoff
How IRPR builds a conversion focused website with senior developers
Each project follows a repeatable process that puts conversion data at the center of every decision.
Phase 1: Discovery and audit. We review your existing analytics, heatmaps, and user session recordings. Our senior developers identify the top three friction points: slow page loads, confusing checkout flow, or unclear calls to action. We document a baseline conversion rate for key actions.
Phases 2-3: Design and development. Engineers build the site using Next.js with server side rendering for fast initial loads. Every page is componentized so product teams can swap headlines, CTA colors, or layouts later. We also add feature flags and A/B test slots.
What ships with every senior conversion rate website development project
Every deliverable is focused on enabling your team to run experiments and improve conversion over time.
You receive a fully functioning website built for speed and flexibility. But the real value is the infrastructure that lets your marketing team continue optimizing. Every project includes analytics hooks, A/B testing tool integration, and a playbook for running tests.
- Source code in your private GitHub repository
- CI/CD pipeline with GitHub Actions and Vercel
- Google Tag Manager container with structured data layer
- Google Optimize account integration with working A/B test variants
- Hotjar session recording and heatmap tracking script
- Lighthouse performance score of 90+ on desktop and mobile
- Sentry error tracking with alert thresholds
- Full test suite with Cypress for critical user flows
- Documentation: CRO playbook with recommended experiments
- One hour handoff walkthrough for your marketing team
What we ship in this practice.
High converting checkout for DTC fashion brand
Built a custom Shopify Plus checkout with one click upsells and cart recovery modals. Reduced abandoned carts by 34%. Used Next.js for storefront, Stripe for payments, and Segment for event tracking.
SaaS signup page redesign for project management tool
Redesigned the signup flow with progress indicators and social proof pop ups. Increased trial signups by 41% in 8 weeks. Built with React, Firebase Auth, and SendGrid email sequences.
Lead generation microsite for wealth management firm
Created a dedicated campaign site with dynamic calculators and Trustpilot reviews. Captured 200+ qualified leads per month. Stack: Next.js, HubSpot CRM, and Google Optimize.
Pricing page optimization for B2B analytics platform
Overhauled the pricing page with interactive toggles and case study highlights. Lifted conversion from price page to demo request by 28%. Used React, Stripe, and Hotjar.
Mobile first booking site for urgent care chain
Built a mobile first scheduling site with geolocation and real time slot availability. Reduced bounce rate on mobile by 52%. Built with Next.js, Google Maps API, and Twilio for SMS confirmations.
Cross device real estate portal for MLS listings
Developed a responsive property search with map based filtering and saved searches. Increased lead form submissions by 39% on mobile. Used React, Next.js, and PostgreSQL with Elasticsearch.
Why teams hire us.
Senior engineers, not juniors
Every developer on your project has 8+ years of experience building high traffic, conversion focused sites. No junior or offshore resources. Our average engineer tenure is 6 years at IRPR.
Fixed price from day one
You get a fixed quote after the 2 week Roadmap phase. No hourly billing, no surprise invoices. That quote covers the full build including A/B testing tools and analytics integration.
12 week MVP delivery
We ship a functional, conversion tested website in 12 weeks on average. One client launched a new checkout flow in 9 weeks and saw a 19% revenue lift within the first month.
Built for continuous CRO
Every project includes a structured data layer, Google Optimize integration, and a CRO playbook. Your marketing team can run experiments immediately after launch without developer help.
Full code ownership
You own all source code, documentation, and configurations. No proprietary frameworks or lock in. You can move the site to any hosting provider or bring in another team.
98% on time delivery rate
Over 200 projects completed with 98% on time delivery. We use a proven Roadmap phase to de risk scope before development begins. On time means the site is live and tracking conversions.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.