Rowell BlancaSoftware Engineer
Available for Select Contracts
Client Footprint: UK · US · AU

Rowell Mark Blanca — Senior Software Engineer
Full-Stack
Software Engineer

React 19Next.js 14TypeScriptPostgreSQLWordPress & PHPNode.jsPrisma ORM

Senior Full-Stack & Next.js Engineer helping funded startups, agencies, and UK, US & Australian businesses build high-concurrency web platforms, zero-bloat WordPress engines, and high-performance APIs—without agency overhead.

Inspect Architecture
Dev Telemetry HUDLIVE
System Availability
Available (Q2/Q3)
Direct Senior Contractor
Local Time (UTC+8)
10:00:00 AM
Active Workstation
Global Client Overlap
Tap city to inspect
UK / Europe (GMT):
4–5 hrs overlap
Web Vitals99/100Sub-160ms TTFB
TypeScriptStrict100% Type-Safe
Experience12+ YrsProduction Dev
Next.js 14 · NeonDB · PHP 8.2
Zero Agency Overhead
Trusted by UK, US & Australian Businesses for Mission-Critical Engineering

Interactive Portfolio Showcase

High-concurrency Next.js web applications, custom multi-tenant SaaS portals, and enterprise WordPress engines engineered for sub-second performance.

MacManus Finance
UK Asset Finance98/100 Web Vitals
BuildForUser SaaS
Multi-Tenant PlatformNext.js & NeonDB
Timezone Overlap
UK, US & AU OverlapDaily Standups
Senior Dev Access
12+ Yrs ExperienceZero Delegation
12+ YrsProduction
50+ AppsShipped
Sub-SecondWeb Vitals
100%Top Rated
Explore All 50+ Projects
Interactive Request Flow Blueprint

System Architecture Inspector

Inspect the high-performance architectural patterns powering modern web apps and custom enterprise CMS platforms. Click any node to review security layers, latency budgets, and real code.

Next.js 14 Full-Stack SaaSEnterprise SaaS

App Router + Edge Auth + NeonDB PostgreSQL

38ms TTFB
💡 Server-driven architecture leveraging React Server Components for zero client JavaScript bundle bloat, edge middleware for sub-5ms auth verification, and NeonDB serverless PostgreSQL via Prisma ORM.
Node Inspector

Client / RSC Layer

0 KB JS Payload
Core Technology & FrameworkReact 19 RSC, Server Actions, Next.js 14 App Router
Security ControlsCSRF token rotation, strict CSP headers, input sanitization
Caching & Invalidationstale-while-revalidate, edge route segment config

Direct server rendering streams pre-rendered HTML without sending heavy client-side JavaScript hydration bundles.

Implementation Snippet
// app/dashboard/page.tsx
export default async function DashboardPage() {
  // Direct server-side data fetch with zero client JS
  const data = await prisma.userMetrics.findUniqueOrThrow({
    where: { organizationId: session.orgId },
    select: { activeUsers: true, mrr: true }
  });

  return <MetricsDashboard data={data} />;
}
Verifiable Engineering ROI

Before & After Performance Bench

Real architectural benchmarks comparing bloated standard agency code against Rowell’s zero-bloat, high-performance systems.

Page Weight
4.2 MB120 KB
-97% Data Transfer
Time To First Byte (TTFB)
3.8s160ms
23x Faster
Database Queries
82 queries2 queries
-97% DB Load
Core Web Vitals Score
42 / 10099 / 100
+57 Points
Code Comparison · High-Impact WordPress Re-Engineering
Verified Production Refactor
Legacy: Heavy Dynamic Page Builder Join

Typical agencies assemble 15+ external plugins and visual builders (Elementor/Divi) resulting in 4MB+ assets and sluggish TTFB.

// ❌ Typical Page Builder / Heavy Plugin
function get_custom_roi_data($post_id) {
    // Spawns 15+ unindexed postmeta queries
    $meta = get_post_meta($post_id);
    $plugins = apply_filters('elementor/frontend/the_content', ...);
    $queries = run_dynamic_subqueries($meta);
    return render_heavy_visual_builder_json($queries);
}
Rowell Build: Clean PSR-4 Indexed SQL

Rowell engineers bespoke native React Gutenberg blocks compiled directly to HTML with custom indexed MySQL tables.

// ✅ Rowell Bespoke Zero-Bloat Engine
public function getRoiMetrics(int $id): array {
    // Single indexed query running in 8ms
    return $this->db->get_row(
        $this->db->prepare(
            "SELECT revenue_lift, ttfb_ms FROM {$this->table}
             WHERE project_id = %d LIMIT 1",
            $id
        ),
        ARRAY_A
    ) ?? [];
}
Result: Sub-second load times & 99+ Core Web Vitals on mobile and desktopBenchmark Your Site →
Featured Spotlight

Project Spotlight
MacManus Asset Finance Portal

A closer look at one of my recent full-stack builds — engineered end-to-end with React, Next.js, and a custom content architecture, designed for speed...

View Case Study
rowellblanca.dev/spotlight
MacManus Asset Finance Portal
Curated Portfolio

Flagship Engineering Builds

Top 5 mission-critical platforms engineered for sub-second performance, strict type safety, and measurable business growth—curated from my live project catalog.

View All 50+ Projects Directory
BuildForUser Platform
US 🇺🇸 BuildForUser Inc
Full-Stack Web EngineProduction Shipped

BuildForUser Platform

SaaS platform for managing client websites at scale — automated WordPress and React deployments, centralized client management, and integrated billing, replacing manual agency ops with a single operational dashboard.

Serverless PostgreSQL · Edge Auth
React/NextjsPrismaNeonDBTypeScriptNode.js
MacManus Asset Finance Portal
UK 🇬🇧 MacManus Commercial Broker
Full-Stack Web EngineProduction Shipped

MacManus Asset Finance Portal

Enterprise asset finance platform built for a regulated UK lender — end-to-end CRM lead pipeline, funder product directory, document hub, and support ticketing unified in one system.

98/100 Core Web Vitals · 140ms TTFB
React/NextjsPrismaNeonDBTypeScriptCRM Pipeline
Juliette Hohnen Real Estate
US 🇺🇸
Bespoke Engineering Platform

Juliette Hohnen Real Estate

Luxury real estate platform for one of Beverly Hills' top-producing agents — custom property galleries, curated listings, and a streamlined inquiry flow built to convert high-value buyers.

High-Converting Real Estate Funnel
WordpressPHPReal Estate API
Tower Fire
UK 🇬🇧
Bespoke Engineering Platform

Tower Fire

Custom WordPress build powered by a hand-coded Gutenberg block library and a native Gutenberg blog engine — zero third-party page builders, full editorial control for the client's team.

Zero-Bloat Native Gutenberg Blocks
WordpressPHPCustom Gutenberg Blocks
MacManus Asset Finance Brokerage
UK 🇬🇧
Bespoke Engineering Platform

MacManus Asset Finance Brokerage

FCA-regulated business finance brokerage site covering asset finance, business loans, invoice financing, and VAT loans — built for compliance-first content and lead capture.

Production Shipped & Tested
WordpressPHPFCA-Regulated

Looking for More Client Builds & Plugins?

Explore 50+ production full-stack web applications, custom Gutenberg block suites, and serverless PostgreSQL architectures.

View All 50+ Projects
Interactive Project Scope & Estimate

Estimate Your Project Scope & Architecture

Select your requirements to see estimated timelines, recommended technical stack, and request an itemized proposal within 24 hours.

Step 1 · Choose Project Type

Next.js / React Web App

Scalable SaaS, client portal, or custom web platform with sub-second performance.

Custom WordPress & Gutenberg

Bespoke theme, headless setup, or custom Gutenberg block plugins without page builder bloat.

AI / Workflow Automation

LLM copilot, RAG knowledge system, OpenAI/Gemini integration, or automated CRM workflows.

Dedicated Senior Dev Retainer

Continuous sprint shipping, agency overflow support, codebase rescue, and feature iterations.

Step 2 · Select Included Features
User Authentication & Database Architecture
Stripe / Payment Billing & Subscription Engine
Custom Admin Dashboard & Content Management
Third-Party API Integrations & Webhooks
98+ Lighthouse Core Web Vitals Optimization
Step 3 · Timeline & Urgency
⚡ Fast Sprint (2–4 Weeks)Need to launch MVP or overhaul rapidly
📅 Standard Build (1–2 Months)Comprehensive phased production rollout
🔄 Ongoing Fractional (Monthly)20–40+ hours/month dedicated senior dev

Scope Summary & Stack

Direct Senior Dev
Estimated Delivery Timeframe

3–6 weeks

Includes full QA testing, responsive breakpoints, and Core Web Vitals audit.

Recommended Architecture Stack
Next.js 14React 19TypeScriptTailwindCSSPostgreSQL
Full UK (GMT), US & Australian (AEST) Timezone Overlap
40–50% Cost Savings vs UK / US / AU Agency Bloat
100% Direct Senior Code Quality & Daily Comms

Lock In Your Proposal & Call

🔒 Direct senior response within 24h · Zero spam · Strict NDA
Working Models & Engagement

How We Can Work Together

Transparent, flexible engagement structures tailored for funded startups, agencies, and UK, US & Australian (AU) businesses looking for direct senior engineering without agency overhead.

Milestone-Based

Fixed-Scope Project Sprint

Best for ground-up MVP builds, custom web application development, or complete platform redesigns with well-defined specs.

Fixed upfront pricing & clear delivery timeline
Full architecture design, UI integration & QA
98+ Core Web Vitals performance guarantee
30 days post-launch warranty & bug-free handover
Most Popular for Agencies & Startups
Dedicated Retainer

Fractional Senior Engineer

Dedicated 20–40+ hours per month for rapid feature iterations, ongoing technical leadership, and agency overflow with full UK, US & AU overlap.

Direct Slack / Teams access & daily standups
Full UK (GMT), US & Australian (AEST) timezone overlap
Continuous PR reviews, CI/CD, and fast shipping
No recruitment fees, payroll taxes, or agency bloat
Fast Turnaround

Codebase Rescue & Speed Audit

1–2 week intensive optimization for slow, legacy, or buggy Next.js/WordPress websites needing sub-second performance.

Comprehensive Core Web Vitals bottleneck audit
Database query optimization & asset minification
Security patches & plugin bloat cleanup
Detailed before/after speed benchmarking report
Client Feedback & Proof

Client Testimonials & Proven Results

Trusted by agency partners, business owners, and tech leaders to deliver high-quality engineering.

Custom Web Development Services

Have a Project in Mind? Let's Build It Together.

Whether you need a modern web application, custom WordPress architecture, or an automated workflow integration — I'm here to turn your vision into a scalable, high-converting digital product.

Over 12 years of hands-on full-stack development experience
Expertise across React, Next.js, Node.js, and WordPress custom plugins
Proven track record with top-rated client reviews & 100% job success rate
Seamless communication, fast response times, and ongoing post-launch support
Direct Inquiry

Fast Turnaround & Dedicated Support

Open for new projects, custom feature development, and long-term retainer engagements.

Response Time

Under 24 Hours

Availability

Open for New Work