Rowell BlancaSoftware Engineer
Available for Select Projects
Trusted by Global Clients: UK · US · AU

Rowell Mark Blanca —
Full-Stack
Software Engineer

ReactNext.jsTypeScriptPHPWordPressNode.jsAI Workflows

Senior Full-Stack & Next.js Engineer helping funded startups, agencies, and UK, US & Australian (AU) businesses build high-performance digital products and custom WordPress engines—without the 50% agency overhead.

Rowell Mark Blanca — Software Engineer specializing in React, Next.js and WordPress development
12+ Years Exp

Rowell Mark Blanca

Software Engineer

Top Rated

Trusted by UK, US & Australian Businesses for Mission-Critical Engineering

MacManus Finance
UK Asset Finance Portal98/100 Core Web Vitals
BuildForUser Platform
SaaS & Multi-Tenant EngineNext.js & NeonDB
Full Timezone Overlap
UK (GMT), US (EST) & AU (AEST)Daily Standups & Slack
Direct Senior Access
12+ Yrs Senior EngineeringZero Junior Delegation
12+ YearsProduction Software
50+ ProjectsAcross Global Clients
Sub-Second98+ Web Vitals Speed
100% SuccessTop Rated Upwork & Direct
Interactive Showcase

Explore high-impact Next.js web applications, custom SaaS portals, and enterprise client platforms engineered for high performance, scale, and conversion.

Technical Capabilities & Engineering Mastery

SpecializedTechnicalExpertise

Specialized engineering capabilities refined over a decade of high-impact web development — building custom software architectures engineered for speed, security, and measurable business growth.

Full-Stack Engineering12+ Years
Core Tech StackReact / Next.js / Node / PHP
WordPress Engine ArchitectureZero-Bloat Custom Plugins
Production AI & RAGLLM & Workflow Pipelines
Enterprise WordPress

WordPress & Headless Engine Architecture

Custom PHP & Decoupled CMS

Engineering high-concurrency, zero-bloat WordPress platforms without third-party page builders.

  • Bespoke Plugin Development: Object-oriented PHP (PSR-4), custom database tables & REST API extensions with zero bloat
  • Native Gutenberg Block Engine: Hand-coded React/Gutenberg blocks providing seamless client editing without page builders
  • Headless WordPress & GraphQL: Decoupled CMS architectures serving Next.js and React client frontends
  • FCA & Enterprise Compliance: High-security data handling, custom user permission matrix, and automated audit logging
  • Schema.org & JSON-LD Builders: Custom SEO graph assembly pipelines with Yoast & RankMath gate coordination
Node.js / PHP / Postgres

Backend Systems & Database Architecture

APIs, Databases & Infrastructure

Designing resilient server architectures, scalable relational databases, and secure API layers.

  • Node.js & PHP Backend APIs: Express, RESTful endpoints, GraphQL, and real-time WebSocket communication
  • Relational Databases & ORMs: NeonDB (Serverless PostgreSQL), MySQL, Prisma ORM, raw SQL query optimization & indexing
  • Authentication & Security: JWT, OAuth 2.0, bcrypt password hashing, CSRF protection, and RBAC authorization
  • CI/CD & DevOps: Docker containerization, Vercel deployments, GitHub Actions automation & environment configuration
  • Automated E2E Testing: Playwright & Jest test suites for zero-regression production deployments
Next.js 14 / TypeScript

Frontend Engineering & Web Applications

React, Next.js & Modern UI Architecture

Building lightning-fast, reactive web applications with state-of-the-art UI performance.

  • React & Next.js App Router: Server Components (RSC), Server Actions, SSR, ISR, and dynamic edge rendering
  • Strict TypeScript Engineering: End-to-end type safety across client interfaces, props, and backend payload contracts
  • Tailwind CSS & Design Systems: Tokenized design systems, responsive flex/grid layouts & micro-animations (Framer Motion)
  • Core Web Vitals & Performance: 95+ Lighthouse optimization, image auto-scaling, dynamic lazy-loading & CLS control
  • Cross-Browser Standards: Pixel-perfect Figma design implementation, accessibility (WCAG), and browser compatibility
OpenAI / RAG / n8n

AI Engineering & Automation Pipelines

RAG Knowledge Bases & LLM Workflows

Integrating intelligent AI agents, RAG vector retrieval, and automated business processing tools.

  • RAG & Vector Knowledge Base: Embedding site content, documents, and FAQs for contextual LLM responses
  • LLM Integrations: OpenAI (GPT-4o), Google Gemini API, and local Ollama model integration with custom system prompts
  • Automated Workflow Pipelines: n8n, Dify, webhooks, automated CRM lead capture, and Mailtrap notification dispatchers
  • Interactive AI Widgets: Embeddable chat widgets with live streaming responses, lead collection & transcript auditing
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
Interactive Engineering Mini-Game

Core Web Vitals Speed Racer

Steer past unoptimized bloated assets, catch Next.js RSC & Edge Cache turbo boosts, and keep Lighthouse Core Web Vitals at 100/100!

VITALS:
100%

HOW TO PLAY

Steer your rocket down the fiber-optic highway. Keep Lighthouse Vitals at 100%!

← / ASTEER LEFT·→ / DSTEER RIGHT
DODGE ⛔ Slow SQL & 5MB bloat
COLLECT ⚡ Next.js & LCP boosts
Score & Records60 FPS Engine
Current Score0 PTS
All-Time High0 PTS

How To Play & Controls

Desktop & Mobile
Keyboard Controls:
/ A Left · / D Right
Mobile Controls:Touch LEFT / RIGHT pads
💡 Game Goal: Keep your Core Web Vitals health above 0% by dodging slow SQL queries & bloated assets while grabbing Next.js & LCP speed boosts.

Web Performance Legend

Sub-Sec LCP (+30)
🚀Next.js RSC (+25)
⚠️5MB PNG (-20)
🐢Bloat CSS (-20)

Score 350+ Points & Claim Reward

Reach 350+ points to unlock a Free 30-Minute Architecture & Codebase Speed Audit for your business platform.

Portfolio Showcase

React, Next.js & WordPress Projects

A curated selection of production builds — from custom WordPress platforms and plugin development to full-stack React and Next.js applications backed by Prisma and NeonDB.

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
Technical Blog & Engineering Insights

Latest Articles & Case Studies

Deep dives into React, Next.js 14 App Router, bespoke WordPress architecture, and AI workflow integrations.

Career Timeline

Professional Experience

Over a decade of progressive engineering roles across agencies, corporate products, and global freelance contracts.

Expertise in WordPress architecture, custom theme and plugin creation, Bedrock/Sage frameworks, and modern React/Next.js client web applications. Emphasizes UI/UX precision, SEO performance optimization, accessibility compliance, and enterprise security measures.

WordPressJavaScriptPHPBedrockReactNext.jsFigma
August99 logo
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