visual

SERVICE / CODING

Filling the gaps between design
into operational‑grade code

Not just converting design files into HTML. I design responsive behavior, loading performance, and maintainable structure—autonomously. Reducing the number of instructions directors need to give.

High‑quality coding, WordPress implementation, and PWA development by a freelance markup engineer based in Mito, Japan.

FOR DIRECTORS

Eliminating the stress of “Do I need to specify this much?”

The bottleneck in production is always “checking and giving instructions.” To minimize your management workload, KASSY MARKUP standardizes the following processes.

  • Autonomous Design: Filling undefined areas without stopping for questions.
    I do not pause the workflow for missing specifications.
    • Propose implementation options instead of asking for direction
    • Define state transitions (hover / active / focus) autonomously
    • Logically interpolate behaviors between breakpoints
    • Resolve spec gaps through engineering judgment
    This significantly reduces your decision‑making load.
  • Fast Acceptance: Minimizing rework and reducing direction cycles.
    Delivery is completed only after major device checks.
    • iOS / Android device testing
    • Blink / WebKit cross‑browser checks
    • W3C Validator syntax verification
    This eliminates avoidable rework and reduces your review time.
  • SEO Standard: Semantic HTML and proper metadata by default.
    Semantic structure and JSON‑LD are included as standard.
    • Clear information hierarchy with HTML5
    • JSON‑LD based on Schema.org
    • Improved accessibility for search engines and LLMs
    This prevents SEO issues after launch and ensures technical quality at the code level.
  • Technical Consulting: Feasibility and optimal implementation from the design stage.
    I evaluate feasibility and cost during the design phase.
    • Rendering cost assessment
    • DOM structure scalability review
    • Avoiding unnecessary or heavy implementations
    This prevents scope creep and ensures the most efficient runtime performance.

Technical Specs

01

Maintainable Architecture

Eliminates unexpected workload caused by text updates or component reuse after delivery. Strict modularization based on BEM ensures a structure that never breaks, protecting your project’s long‑term maintainability and profitability.

  • Reduced workload: isolated modules prevent global side effects
  • No dependency on individuals: clean, instantly understandable structure
  • Smooth transition: architecture ready for WordPress integration
BEM‑based class design and Sass modularization ensure a stable structure that withstands spec changes and feature additions.
02

Performance & SEO

Prevents ad‑loss caused by slow rendering and ranking drops caused by structural issues. Core Web Vitals‑oriented implementation ensures stable scores and a reliable conversion environment.

  • Reduced bounce: fast rendering through LCP/CLS optimization
  • Stable evaluation: structured data implemented as standard
  • Higher results: optimized assets reduce drop‑off on landing
Removes render‑blocking elements and optimizes image assets. Achieves Lighthouse‑ideal performance while maintaining realistic reproducibility.

Workflow

01

Analysis & Proposal

Interpreting the design intent and identifying potential issues before implementation— such as font rendering behavior, animation performance, and responsive logic.

02

Pure Engineering

Performance‑oriented coding with semantic markup and optimized assets, ensuring fast loading and a stable structure ready for long‑term operation.

03

Verification

Thorough device and browser testing across major environments, minimizing your review workload and ensuring a smooth project handoff.

Price & Volume

Flexible pricing that adapts to your client-facing budget. Instead of page-based pricing, estimates are calculated based on design density and system requirements.

Operational‑Grade

Full Quality Coding

$65 / hour

Production‑ready coding focused on maintainability, performance,
and long‑term stability. Suitable for LPs, multi‑page sites,
and WordPress integration.

  • Semantic & Modular Markup
  • Performance Optimization (LCP / CLS)
  • Reusable Components / WP‑Ready Structure
Pixel‑accurate box models, scalable Sass architecture, and consistent behavior across devices and breakpoints.
Economy

Essential Coding

$35 / hour

A cost‑efficient option that still maintains structural stability and clean markup.Provides reliable quality that low‑cost coding services cannot guarantee.

  • Clean & Stable Markup
  • Basic Responsive Behavior
  • Light Performance Tuning
Suitable for simple layouts, static content, and low‑density designs. Advanced animation, heavy optimization, and system integration are excluded.

Rush & Short‑Deadline Projects

Availability depends on current workload. Please share your deadline and volume first. I will immediately evaluate feasibility and propose the fastest route while maintaining the required quality.

Reverse Estimation from Budget

If you have a fixed client budget (e.g., “We need to stay within $1,000”), I will reverse‑engineer the scope—identifying what can be reused, what should be prioritized, and how to maximize your margin.

FAQ

Do you support communication in English?

Yes. All communication can be handled in English.
AI‑assisted translation is used for speed, and all technical terms are manually verified to avoid misunderstandings.

How will we communicate during the project?

All communication is text‑based (chat or written messages).
This ensures a clear record of decisions, reduces ambiguity, and allows smooth progress across time zones.

Is voice or video communication required?

NThe entire workflow can be handled accurately through text‑based communication, from specifications to feedback and delivery.
For this reason, video or voice calls are not part of my standard process.

What happens if there is a complex technical issue to discuss?

For complex logic, I prefer Asynchronous Communication (Slack or Email) using screen recordings or annotated screenshots. This allows both parties to review technical details precisely without the pressure of a live call, leading to fewer errors and more efficient problem-solving.

Which CSS methodology do you follow?

I primarily use BEM (Block Element Modifier) combined with FLOCSS for scalable and maintainable architecture. This ensures that the code is easy for your internal team to read and modify in the future.

Do you support modern image formats and performance optimization?

Yes. My standard workflow includes implementing WebP/AVIF formats and optimizing assets to ensure fast load times. I focus on improving Core Web Vitals (LCP, CLS, FID) to provide the best possible user experience and SEO performance.

How do you handle cross-browser and device verification?

Every project undergoes rigorous testing on modern browsers (Chrome, Safari, Firefox, Edge) and actual mobile devices (iOS/Android). My goal is to deliver code that is ready for deployment with minimal internal review required on your end.

Frontend Engineering
  • HTML5
  • CSS3 / Sass (BEM / FLOCSS)
  • JavaScript
  • PHP
  • Liquid
Performance & SEO
  • Image Optimization (WebP / AVIF)
  • Code Optimization & Minification
  • Structured Data / OGP
  • Core Web Vitals (LCP / CLS)
CMS / Platforms
  • WordPress
  • Shopify / EC‑CUBE
  • PWA Development
  • HubSpot
Design Tools
  • Figma
  • Adobe XD
  • Photoshop
  • Illustrator

CONTACT

I help resolve implementation uncertainties and accelerate production.
Consultations welcome even before specifications are finalized.

For project inquiries, I am available on:

These platforms provide a secure and transparent workflow for both sides.

Or send a direct message:

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