WebExpertOvi
STATUS AVAILABLE FOR AUDITS

Md Atiar Rahman Ovi · Junior Manager at Razib Marketing

[ WORK // ENGINEERING_LOGS ]

Production Systems & Architecture Logs

Detailed case studies demonstrating how root technical challenges were diagnosed, architected, and validated across real-world commercial platforms.

[ 05 // CASE_STUDIES ]

Selected Engineering Work

Verified production systems, telemetry overhauls, automation pipelines, and enterprise operations logs.

Analytics & GTM
Multi-brand Fashion Retailer 2024

Enterprise E-Commerce Server-Side GTM & Meta CAPI Migration

Restoring 28% lost conversion signal and reducing LCP by 640ms via custom edge telemetry.

★ VERIFIED OUTCOME

Achieved 99.4% conversion match rate with Shopify backend, restored 28% attributed Meta revenue, and reduced page load weight by 410KB.

THE CHALLENGE:

Safari ITP cookie suppression and aggressive ad-blockers caused a 30% discrepancy between Shopify backend revenue and Meta Ads reported conversions.

Server-Side GTM Meta CAPI GA4 Cloudflare Workers Shopify Plus BigQuery Docker
WordPress Engineering
B2B SaaS Media Publication 2024

High-Traffic WordPress Architecture & Core Web Vitals Overhaul

Scaling a 250k monthly visitor publication to 98 Mobile Lighthouse score and sub-120ms INP.

★ VERIFIED OUTCOME

Mobile Lighthouse Performance jumped from 41 to 98. Real-user LCP dropped from 4.9s to 1.4s, Interaction to Next Paint (INP) dropped to 85ms, and organic search impressions rebounded by 44%.

THE CHALLENGE:

A high-authority B2B technology blog suffered severe Google ranking penalties after an unoptimized Elementor and plugin-heavy revamp bloated mobile LCP to 4.9s and INP to 460ms.

WordPress PHP 8.2 MySQL Redis Cloudflare Tailwind CSS Chrome DevTools
Automation #AUTOMATION #DOCKER #NEON_POSTGRES #APIS
Global SaaS & Growth Platform 2024

Distributed n8n Automation Engine with Docker & Neon PostgreSQL

Event-driven webhook orchestration, customer data sync, and serverless database pipelines

★ VERIFIED OUTCOME

Eliminated 100% of manual data entry, reduced sync latency to under 800ms, and saved over 25 engineering hours per week.

THE CHALLENGE:

Marketing, billing, and CRM events were trapped in disconnected third-party tools, causing sync latency and customer data fragmentation.

n8n Docker Neon PostgreSQL Webhooks REST APIs Node.js
Analytics & GTM
Series-B HRTech Platform 2024

Enterprise SaaS Full-Funnel DataLayer & Consent Mode v2 Architecture

Architecting GDPR-compliant attribution and user lifecycle tracking across single-page web app and marketing site.

★ VERIFIED OUTCOME

100% GDPR compliance certification achieved; recovered 82% of modeled conversion data from non-consenting EEA visitors while ensuring zero unconsented ad-storage cookies were dropped.

THE CHALLENGE:

Marketing attribution broke when users transitioned from marketing marketing site to app subdomain; EU regulatory scrutiny required stringent Consent Mode v2 implementation without zeroing conversion signals.

Google Tag Manager GA4 Consent Mode v2 BigQuery TypeScript Cookiebot Playwright
Technical Operations #CLICKUP #OPERATIONS #SOP_ARCHITECTURE #QA
Razib Marketing Agency Division 2024

ClickUp Technical Operations & Multi-Site SLA Governance

Structuring sprint velocity, automated QA checklists, and client maintenance governance for 80+ platforms

★ VERIFIED OUTCOME

Accelerated project delivery speed by 40%, achieved 99.4% client SLA compliance across 80+ retained platforms, and eliminated post-release regressions.

THE CHALLENGE:

Coordinating development, analytics audits, security patches, and SEO retainers across 80+ client websites lacked unified visibility and standardized QA guardrails.

ClickUp SOP Architecture Workload Planning Automated QA Technical Governance Slack Webhooks
Accessibility
Commercial Lending Institution 2024

WCAG 2.1 AA/AAA Accessibility Audit & Engineering Remediation

Remediating complex financial calculator widgets, focus traps, and 400% zoom reflow for ADA compliance.

★ VERIFIED OUTCOME

Achieved 100% WCAG 2.1 AA and targeted AAA compliance across all customer-facing mortgage and lending tools. Mitigated legal exposure and improved form completion rates by 19%.

THE CHALLENGE:

The client faced legal ADA exposure due to inaccessible multi-step loan calculators, keyboard trap modals, low-contrast UI widgets, and complete failure under 400% zoom reflow.

WCAG 2.1 AA/AAA WAI-ARIA VoiceOver NVDA Axe Core Semantic HTML5 Modern CSS
Edge & Automation
Global Hospitality & Booking Network 2024

Cloudflare Edge Dynamic Redirect Engine & Webhook Ingestion Cluster

Handling 2.4M monthly requests at 14ms global latency with zero origin server strain.

★ VERIFIED OUTCOME

Average redirect latency dropped from 840ms to 14ms. Origin server CPU utilization dropped from 92% to 11%, saving over $1,400 monthly in dedicated cloud server scaling costs.

THE CHALLENGE:

A hospitality group running 18 property websites merged their domains into a single primary brand. They faced 25,000 legacy URLs requiring 301 redirection that immediately overloaded their origin servers.

Cloudflare Workers Cloudflare KV TypeScript n8n Webhooks k6 Load Testing
[ DIRECT INTAKE ]

Book Technical Consultation

CONSULTATION SCOPE 45-MIN TECHNICAL DIAGNOSIS

A targeted architecture review to diagnose data loss, evaluate GA4/GTM pipelines, inspect WordPress bottlenecks, or scope WCAG compliance.

GA4 / sGTM Audit
Meta CAPI Parity
WP Core Web Vitals
WCAG 2.1 Reflow
Primary Receiver: ovi.cse23@gmail.com

Direct Engineering: Handled personally by Md Atiar Rahman Ovi.

Full Agency Scope: Larger multidisciplinary engagements can be onboarded through our team at Razib Marketing.

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