- WordPress Development
WordPress Development Company & WooCommerce Experts | NullStack
NullStack Technologies is the WordPress development company that treats WordPress like the serious application platform it actually is. For a decade we have built custom WordPress sites, hand-coded plugins, performance-tuned Elementor builds, and CMS architectures that rank on Google’s first page and get cited inside Google AI Overview, ChatGPT, and Perplexity. Not theme-shop work. Not template assembly. Engineered WordPress: fast, secure, indexable, and yours.
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Why NullStack Technologies
Why we are not another WordPress development agency
Most WordPress agencies are theme assemblers. They buy a premium theme, drop in your content, charge you for the install, and call it a website. Six months later your site is slow, the page builder has bloated the DOM, the plugins conflict, and “SEO optimised” turned out to mean Yoast was activated. We built NullStack on the opposite premise: WordPress is a serious platform, and serious platforms deserve engineering.
Plugin developers, not plugin installers
Our team writes WordPress plugins from scratch. We hand-code custom post types, custom REST API endpoints, custom block patterns, custom Gutenberg blocks, and custom Elementor widgets. When your business needs a feature that no plugin offers or when the off-the-shelf plugins ship with three dependencies and a database-bloat problem we build the exact code you need and nothing more. The result is a faster site, a smaller attack surface, and code that does not break when the next WordPress core update lands.
Elementor mastery, not Elementor abuse
Elementor is a remarkable design tool when used well and a performance disaster when used badly. We use Elementor extensively for clients who need design freedom and editorial control but we use it with engineering discipline. Custom Elementor widgets where stock widgets are bloated. Performance budgets enforced sprint by sprint. Critical CSS extraction. Asset deferral. Image optimisation pipelines. The result: Elementor sites that score 90+ on PageSpeed, not the typical 40-something.
CMS engineered for SEO and AEO
Most WordPress sites are built for visual presentation. We build them for indexability and citation. Server-side rendering, semantic HTML, structured data (JSON-LD schema injected at the right hook), Core Web Vitals as a release blocker, hreflang for international, AEO-ready Q&A formatting, and entity SEO across the content. Your CMS is not just where you write – it is where AI engines source their answers.
Our WordPress Development Services
Full-site builds from scratch - custom design, custom theme code or hand-tuned Elementor, custom post types, custom user flows. Built around your brand and your roadmap, not a template marketplace.
Hand-coded plugins for functionality that no off-the-shelf plugin solves -custom integrations, niche workflows, internal tools, business logic. Object-oriented, namespaced, WP-coding-standards-compliant, security-reviewed.
Premium Elementor builds with custom widgets, custom theme builder templates, performance-budgeted page construction, and reusable global components. Elementor used the way Elementor should be used.
Custom WooCommerce stores, custom payment integrations, multi-vendor marketplaces, subscription products, custom checkout flows, B2B WooCommerce, performance-tuned product catalogues.
Multisite networks for franchise and multi-brand operations. WPML and Polylang multilingual deployments with hreflang configuration. Geo-targeted regional sites with shared content models.
WordPress as a backend CMS, paired with Next.js or Nuxt front-ends via REST API or GraphQL (WPGraphQL). The right architecture when your editorial team loves WordPress but your front-end needs to be enterprise-fast.
Full SEO implementation on WordPress — schema engineering, internal-link architecture, Core Web Vitals remediation, AEO/LLM optimisation, programmatic SEO at scale. Cross-linked to our SEO services.
Migrations from Wix, Squarespace, Shopify, custom CMS, or legacy WordPress installs. Content preservation, URL redirect engineering, SEO equity protection, zero-downtime cutover.
Ongoing support contracts — security patching, plugin updates, daily backups, uptime monitoring, performance audits, monthly health reports. Optional, never mandatory
Core Web Vitals remediation, asset optimisation, database optimisation, caching strategy (object cache, page cache, CDN), critical CSS, image optimisation pipelines. From a 4-second LCP to under 2 seconds.
Security hardening, malware removal, brute-force protection, file integrity monitoring, two-factor authentication, role-based access control, security headers, OWASP-aligned audits.
Custom WordPress plugins, hand-coded for your business
How we build plugins
Object-oriented PHP, namespaced, autoloaded via Composer where it earns its place.
Hooks and filters used correctly actions for side effects, filters for transformation, custom hooks where downstream developers need extensibility.
Custom REST API endpoints with proper authentication, capability checks, and structured response envelopes.
Database design discipline custom tables only when post-meta would not scale, dbDelta for schema migrations, proper indexing
Internationalisation built in text domains, .pot files, RTL support where relevant.
Coding standards WordPress Coding Standards (WPCS), PHPStan static analysis, automated linting in CI.
Security review capability checks, nonce verification, escaping output, sanitising input, prepared statements, no eval, no shell exec
What you get
A plugin that solves your specific problem, with no dependencies on abandoned third-party code. A plugin that survives WordPress core updates. A plugin you own — source code in your Git repository, free to modify or hand to another developer. And, critically, a plugin that does not bloat your site with code you will never use.
For projects that justify it, we can also list and maintain plugins in the WordPress.org repository on your behalf — extending your brand’s authority across the WordPress ecosystem.
| How we build Elementor sites | We use Elementor on most client projects where the marketing team needs editorial control. We use it with discipline. |
|---|---|
| Custom Elementor widgets | for repeatable design patterns — hero blocks, testimonial walls, pricing tables, product showcases — coded once, reusable across pages, performance-budgeted, brand-locked |
| Performance budgets enforced | every page benchmarked before going live; LCP under 2.5 seconds, CLS under 0.1, INP under 200ms or it does not ship |
| Critical CSS extraction | asset deferral, font subsetting, image optimisation pipelines — the engineering layer most Elementor sites skip |
| Global widgets and design tokens | colours, typography, spacing centralised so brand updates propagate in one click instead of fifty |
| Database-clean exports | when handing over a site, no orphaned post-meta, no abandoned templates, no leftover demo content |
| Elementor Pro plus our custom widgets | For most engagements we ship Elementor Pro with a custom NullStack widget pack — preconfigured to your brand, performance-tested, and locked down so editors get the design freedom they need without breaking the system that holds the site together. |
- NST WP Engine
How We Deliver
A five-layer framework. Every WordPress engagement runs through the same layers, in the same order, with the same artefacts at the end of each layer. It is what makes our WordPress work reproducible across a hospital website, a D2C storefront, and a national publisher.
Audit & Architecture
Existing-site audit (if migrating or rebuilding). Information architecture and content model design. Custom post types, taxonomies, and field structure (ACF or native). Plugin audit — what stays, what gets replaced with custom code, what gets removed entirely. Hosting evaluation. Output: a written WordPress architecture document signed off before development begins.
Foundation Build
Theme scaffold (custom theme or child theme). Custom plugin scaffolds where needed. Elementor theme builder templates. Custom widget development. Schema markup integration at the right WordPress hooks. SEO foundation — sitemap, robots, hreflang, canonical strategy. Output: a working staging site with the structural skeleton in place.
Page-Level Build & Content Migration
Page-by-page construction in Elementor or block editor. Content migration from existing site (if applicable) with URL redirect map. Custom block development for repeatable content patterns. AEO-ready Q&A formatting where it earns visibility. Output: every page built, content migrated, internal-link architecture in place.
Hardening & Optimisation
Core Web Vitals remediation. Caching strategy (object cache via Redis, page cache, CDN). Image optimisation pipeline. Critical CSS. Asset deferral. Security hardening — two-factor admin, role-based access, security headers, file integrity monitoring. Backup and disaster recovery configured. Output: a site benchmarked against pre-launch targets — LCP under 2.5s, security audit clean.
Launch, Train & Support
Production cutover with zero-downtime DNS strategy. Editor training session for your content team — recorded for reference. Documentation handover — custom plugin docs, Elementor template library, content-publishing runbook, schema-update procedure. First-30-days observation window with on-call support. Optional ongoing maintenance contract.
Creating Solutions that
Fuel Growth and Success
Real Estate
We offer more than
just Real Estate
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

E-Commerce
We offer more than
just E-commerce!
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

FinTech
We offer more than
just Fintech
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

EdTech
We offer more than
just EdTech
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

Healthcare
We offer more than
just Healthcare
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

SaaS
We offer more than
just SaaS
- Our Services Include
- Web Design & Development , Mobile App Development , Digital Marketing , SEO , Social Media Marketing , ERP Software Solutions .

Frequently Asked Questions
WordPress projects vary widely by scope. Starter sites — small-business brochure sites, 8–15 pages — typically range ₹75,000–₹2,50,000. Standard sites — mid-market, 15–40 pages, basic integrations — range ₹2,50,000–₹7,50,000. Custom builds — multi-role sites, custom plugins, WooCommerce, headless setups — range ₹7,50,000–₹25,00,000. Enterprise WordPress engagements start at ₹25,00,000 and scale with multisite scope or programmatic content. Hosting and premium plugin licences are scoped separately and run through your accounts.
Starter sites typically deliver in 3–5 weeks. Standard sites in 5–10 weeks. Custom builds in 8–16 weeks. Enterprise WordPress engagements run 12 weeks and beyond. Timelines depend on content readiness, design rounds, integration complexity, and your team's review velocity. Our written project specification includes a sprint-by-sprint timeline so you can track progress against the plan.
Both — depending on the project. Elementor is our default for clients whose marketing teams need editorial control without filing developer tickets for every change. Custom themes are our default when performance is the absolute priority, when the site has unusual structural requirements, or when the team prefers Gutenberg block patterns. We will recommend the right approach during scoping; we will not push Elementor when a custom theme is the better fit.
Yes — custom plugin development is a core capability. We have built plugins for CRM integrations, ERP connectors, custom marketplaces, niche workflows, and dozens of business-logic problems where no off-the-shelf plugin solves the actual problem. Plugins are object-oriented, namespaced, WordPress-Coding-Standards compliant, and security-reviewed. You own the source code from day one.
Yes. Performance is a release blocker, not a phase-2 nice-to-have. Every site we ship must achieve LCP under 2.5 seconds, CLS under 0.1, and INP under 200ms on a mid-range mobile device before it goes live. We use object caching (Redis), page caching, CDN delivery, critical CSS extraction, asset deferral, image optimisation pipelines, and database query optimisation. We have taken sites from 4-second LCP to under 2 seconds on rebuild — without removing functionality.
Security is built in. Every site ships with two-factor admin authentication, role-based access control, security headers, file integrity monitoring, brute-force protection, and OWASP-aligned hardening. We use Wordfence Premium or iThemes Security Pro on every site. For sites in regulated sectors — healthcare, fintech, education — we layer in vertical-specific controls. Security patching is included in maintenance contracts and applied within 48 hours of any critical CVE disclosure.
Yes — migration is a regular engagement type. We handle content migration, URL redirect engineering (preserving SEO equity), media migration, theme rebuild, plugin replacement, and zero-downtime cutover. Pre-migration we run a full SEO audit so we know which URLs and rankings to preserve. Post-migration we monitor rankings for 90 days to catch any redirect or indexing issues.
Yes — optionally, never mandatory. Maintenance contracts cover daily backups, weekly plugin and theme updates, security patching, uptime monitoring, monthly performance audits, and a small monthly content/development retainer. Pricing depends on site complexity. Critically, we never lock you in — you can cancel maintenance with 30 days' notice and the site keeps running on your hosting under your control.
Yes — WooCommerce development is one of our largest WordPress service lines. We build custom WooCommerce stores, custom payment integrations, multi-vendor marketplaces, subscription products, B2B WooCommerce with role-based pricing, and performance-tuned product catalogues. For larger D2C clients we often recommend Shopify instead — see our Shopify development page — and we will give an honest recommendation based on your scale and roadmap.
Headless WordPress means using WordPress as a back-end CMS while the front-end is built in Next.js, Nuxt, or another modern framework, communicating via REST API or GraphQL. It makes sense when your editorial team loves WordPress but your front-end needs to be enterprise-fast, when you are publishing across multiple channels (web, mobile, kiosks), or when you want SEO and Core Web Vitals scores that traditional WordPress themes cannot reach. It is overkill for small business sites — we will tell you when not to do it.
We engineer sites for both. Standard SEO foundations — schema markup, semantic HTML, internal linking, Core Web Vitals — are baseline. AEO/LLM optimisation — entity SEO, structured Q&A formatting, citation-readiness, AI-engine monitoring — is layered in for clients on our SEO retainer. WordPress is a strong CMS for both disciplines when used correctly.
You do — fully and unconditionally. Source code is hosted in a Git repository under your organisation. Custom plugins are owned by you and you can modify, fork, or relicense them. Designs are delivered in your Figma. Hosting and domain accounts are yours throughout. We retain nothing on departure beyond the right to reference the work in our portfolio with your permission.You do — fully and unconditionally. Source code is hosted in a Git repository under your organisation. Custom plugins are owned by you and you can modify, fork, or relicense them. Designs are delivered in your Figma. Hosting and domain accounts are yours throughout. We retain nothing on departure beyond the right to reference the work in our portfolio with your permission.
Yes — editor training is included in every engagement. We deliver recorded video walkthroughs, written documentation, and a one-on-one training session for your content team. For larger engagements we run multi-session training programmes covering Elementor templates, content modelling, schema updates, and SEO publishing standards.
Yes — most maintenance contracts include a small monthly bucket of development hours for ongoing tweaks, new pages, and minor feature work. For larger feature requests we scope them as separate sprints. The split is transparent — you always know how the hours are being used and what is queued next.
Three things, in order. First, our engineering origin — we treat WordPress as a serious application platform, not a theme-shop deliverable. Second, custom plugin development as a core capability — we can build the exact functionality you need instead of stacking ten compromised plugins. Third, performance and AEO as release blockers — our WordPress sites are fast, indexable, and increasingly cited inside AI answers, while most Kolkata WordPress sites are still slow, fragile, and invisible in 2026 search.