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I want to extend my existing WordPress site with a purpose-built add-on that installs cleanly as a standard plugin (ZIP), respects WordPress coding standards, and works on the latest stable WP + PHP versions. At this stage I’m still finalising the exact feature set, so I’d like a developer who can help shape the scope, suggest best-practice architecture, and then build the add-on from scratch. Whether the final solution ends up enhancing SEO, adding simple e-commerce hooks, or tying into an external API, the code must remain modular so extra functionality can be bolted on later without rewrites. Deliverables • Well-documented plugin files packaged for one-click upload • Clear install & rollback instructions • Brief hand-over notes on how to extend or localise the add-on Acceptance criteria will be a working demo on my staging server plus a short code review session to walk through structure, security and performance considerations. If you already have experience writing lean, secure WordPress plugins (ideally following WP-CLI, Gutenberg, and modern OOP practices) and can turn tasks around quickly, let’s talk architecture and timelines.
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⚡ **Custom WordPress Plugin — Clean, Secure & Built to Scale!** Hi, We’re **Solution24Seven**, an experienced WordPress development team specializing in **custom plugins, PHP, modern OOP architecture, APIs, Gutenberg, and performance-focused development**. We can help you **define the right architecture first**, then build a lean, modular plugin that can easily grow with future features. ✅ Custom WordPress plugin from scratch ✅ Modular & scalable architecture ✅ Latest stable WordPress + PHP compatibility ✅ Secure, clean & documented code ✅ One-click ZIP installation ✅ Install + rollback instructions ✅ Extension/localization handover notes ✅ Staging demo + code review **First, your work will be completed 100% — then you can review it and award the project. No issue at all.** ? We’re ready to discuss the feature roadmap and start with the right architecture from day one. **Solution24Seven** ? [login to view URL]
$40 USD in 1 day
6.5
6.5
313 freelancers are bidding on average $135 USD for this job

With over a decade’s worth of experience in web development and a specialization in WordPress, my team at 360 Elevate is the ideal partner for your custom add-on project. Our deep understanding of WordPress, WooCommerce, WP-CLI and Gutenberg coupled with our modern OOP practices will ensure that we can deliver a clean, high-performance and secure plugin that not only aligns with your current needs but also allows for smooth integration of future functionalities. Our meticulous approach to documentation and knack for following best-practices have always led us to deliver one-click uploadable plugins with clear install instructions that can be effortlessly navigated by even non-technical users. Right from planning the architecture to executing each line of code, modularity stands at the core of our development philosophy. This guarantees easy future enhancements without having to revamp the entire system.
$200 USD in 7 days
10.0
10.0

Hello, I understand that you are looking for a skilled WordPress developer to create a custom add-on for your existing WordPress site. As someone with extensive experience in WordPress plugin development, I can help shape the scope, suggest best-practice architecture, and build the add-on from scratch to meet your requirements. My approach involves following WordPress coding standards, ensuring compatibility with the latest WP and PHP versions, and maintaining modular code for future scalability. I have a proven track record of delivering well-documented plugins with clear installation instructions and robust performance. With expertise in lean, secure WordPress plugin development, including WP-CLI, Gutenberg, and modern OOP practices, I am confident in my ability to meet your needs efficiently and effectively. I am committed to delivering a high-quality solution that aligns with your goals and ensures seamless integration with your existing site. I invite you to review my portfolio at https://www.freelancer.com/u/Microlent and discuss further details to tailor the add-on to your specific requirements. Let's collaborate on architecture and timelines to bring your vision to life. Sincerely, Rajesh
$140 USD in 10 days
9.4
9.4

Hi, hope you're doing well! I'd love to help you build a clean, modular WordPress plugin from scratch that grows with your needs. Here's my approach: OOP architecture with hooks and filters for easy extension, PSR-style coding following WP standards, and a tidy ZIP package with install, rollback, and handover docs. I'll join your code review session ready to walk through security, performance, and structure. Three questions to help me scope this well: 1. Do you have any existing plugins or APIs this add-on must integrate with? 2. Are you leaning toward a Gutenberg block interface, a settings page, or purely back-end logic? 3. What's your rough timeline for the staging demo? Looking forward to shaping the architecture with you! Azeem Amin
$250 USD in 7 days
9.1
9.1

Hello, With my extensive 15+ years of experience and a strong focus on turning out efficient, secure, and user-friendly products, I am confident that I'm the ideal fit for your custom WordPress add-on development project. My proven track record in working with WordPress and WooCommerce, as well as my ability to code following WP-CLI, Gutenberg and maintaining modern OOP practices, will bring an added value to your site. As the founder of A4Logic, I have fine-tuned my skills in understanding clients' requirements and developing tailored solutions. The fact that I actually enjoy shaping scopes and suggesting best practice architectures aligns perfectly with your search for someone who can help you finalise your feature set through collaborative ideation while ensuring that your code remains modular to anticipate future bolt-ons without rewrites. Besides delivering a well-documented plugin package for one-click upload, clear instructions for installation & rollback, and thorough hand-over notes - I'm committed to providing long-term support. Additionally, I believe in maintaining clear communication throughout the process to ensure full client satisfaction at all times. Working together, we can create something great! Thanks!
$180 USD in 3 days
8.6
8.6

Hello, I am interested in developing your custom WordPress add-on. With extensive experience in WordPress plugin development, API integration, and web development, I can help shape the scope, suggest best practices, and deliver a modular, secure, and well-documented plugin. I have previously worked on similar projects such as 'WordPress WooCommerce Apparel eCommerce Store with Payment Gateway, Giveaways, Bible API & Brevo Email Marketing' and 'Add and format content in a Wordpress site,' which demonstrate my capability to handle this task efficiently. I will ensure the plugin is packaged for easy upload, with clear instructions for installation and rollback, and provide a brief hand-over for future extensions. I am confident I can deliver a working demo within 30 days and look forward to discussing the project further. Best regards, SYMLINK TECHNOLOGIES LLP
$150 USD in 30 days
8.5
8.5

Hi, I went through your project "Custom WordPress Add-On Development" and I can help. I'm a web developer working across WordPress, Shopify, Drupal, Magento, CS-Cart, WooCommerce, Joomla, OpenCart, building custom functionality, plugins, themes and integrations. I have many years of experience in programming, along with in-depth knowledge of software architecture, software development, and database systems. I have a strong background in web development and have worked on many projects, including e-commerce websites, custom plugins, and integrations and ability to solve quickly the every problem and then I always ensure the high quality & low cost of the work. Please have a look at my profile. Happy to discuss scope and timeline. Best, Hoang
$30 USD in 7 days
8.6
8.6

Hi, We have 15+ years of experience in WordPress, web development & digital marketing with 1327+ client reviews and specialize in custom WordPress development, plugin integration, website functionality and performance optimization. I can help develop and integrate custom WordPress functionality based on your exact requirements while ensuring clean implementation, compatibility and a smooth user experience. * CUSTOM WORDPRESS DEVELOPMENT PLAN * ✅ Analyze your existing WordPress setup and development requirements ✅ Build custom functionality tailored to your website needs ✅ Develop or customize WordPress plugins and features ✅ Ensure compatibility with your current theme and plugins ✅ Optimize code for performance, security and maintainability ✅ Test all functionality across devices and major browsers ✅ Provide proper implementation, troubleshooting and post-development support I’ll first review your current WordPress environment and requirements to determine the cleanest and most reliable development approach. The implementation will focus on scalable functionality, minimal plugin conflicts and a stable website experience without unnecessary changes to your existing setup. Best Regards, Firoz
$100 USD in 30 days
8.7
8.7

With a track record in developing lean, secure WordPress plugins following modern OOP practices, I understand the importance of clean code and adherence to WordPress standards. I'm excited about the opportunity to collaborate on shaping and building a purpose-built add-on for your WordPress site. How do you envision the add-on's scalability for future feature enhancements? Regards, Yogesh Kumar
$90 USD in 10 days
8.5
8.5

Hi, I can assist in defining the scope and developing a custom add-on that adheres to WordPress coding standards and is compatible with the latest versions. With over 12+ years of experience in WordPress development, I focus on building modular, clean code that allows for easy expansions in the future. I’ll ensure the plugin is well-documented, with installation and rollback instructions, as well as hand-over notes. My approach includes security checks, performance optimization, and a transparent code review session to ensure everything meets your expectations. I’m familiar with WP-CLI, Gutenberg, and modern OOP practices, so I can deliver a robust solution fast. Please see our portfolio on this link : https://www.freelancer.com/u/webperfection123 Let’s connect and discuss how to turn your ideas into reality! Best Regards, Priyanka
$140 USD in 2 days
8.5
8.5

Hi there, I can build your custom WordPress add-on from scratch as a clean, modular and secure ZIP plugin that follows WordPress coding standards and works with the latest stable WordPress and PHP versions. I’ll first help finalize the architecture and feature scope, then structure the plugin using modern OOP practices so future SEO, e-commerce or API functionality can be added without rewriting the core. I’ll provide clear documentation, install/rollback instructions, extension/localization notes and a staging demo, followed by a code review covering security, performance and maintainability. Could you share your current WordPress setup and the initial features you’re considering so I can propose the best plugin architecture and timeline? Kindly send me a message to discuss more or directly award me. Thank you!
$150 USD in 3 days
8.4
8.4

Hi I can build your WordPress add-on from scratch with a modular OOP architecture, clean coding standards, and compatibility with current WordPress and PHP versions. I’ll focus on secure, lightweight code that can evolve as the feature scope becomes clearer. You’ll receive a ready-to-upload ZIP, rollback and installation instructions, extension/localisation notes, and a staging demo with a code review. Happy to discuss the architecture. Best regards, Singh
$150 USD in 5 days
8.4
8.4

Since the feature set is still open, the architecture has to be the thing that's decided properly up front — so I'd build it as a namespaced, PSR-4 autoloaded plugin with a thin bootstrap file and each feature isolated in its own module registered through a loader, meaning new functionality is a new class rather than edits to existing code. Two things I always get right because they're the usual failure points: schema/options must be self-applying on upgrade (an activation-only installer leaves every existing site broken when you add a table later), and uninstall/rollback must actually clean up, so I include a tested deactivation path plus your existing-site upgrade route, not just a clean install. Security handled with capability checks, nonces, prepared statements and escaped output throughout; text-domain loaded on `init` and strings wrapped for localisation. Delivered as a one-click ZIP with docs and install/rollback notes, demoed on your staging, and I'm happy to walk you through the structure. Free to start scoping immediately.
$30 USD in 1 day
8.1
8.1

Since the feature set is still being finalized, the biggest risk is building the wrong foundation and then having to refactor once new requirements appear. I’d handle this by scoping the architecture first, identifying the right hook/class structure, and then building the add-on as a clean, documented WordPress plugin package ready for one-click upload. I’ve been involved in WordPress builds where security, maintainability, and version compatibility mattered more than flashy code. For this kind of job, that means proper sanitization/escaping, clean separation of concerns, modular classes, and a setup that behaves well on modern WP/PHP without becoming bloated. I can also include concise install and rollback notes so staging-to-live handling is straightforward. - Do you want the first version to expose functionality mainly in wp-admin, on the frontend, or both? - Will this need custom database tables, or would you prefer staying within core WordPress options/meta where possible? - Should localisation be prepared as full translation-ready text domain support from version 1?
$250 USD in 7 days
8.2
8.2

Greetings, I see you're looking to develop a custom WordPress add-on that fits seamlessly into your existing site while adhering to coding standards. My approach would start with collaborating with you to define the exact features you envision, ensuring the architecture is both scalable and modular for future enhancements. With my experience in building secure and efficient WordPress plugins, I can help you create an add-on that could improve SEO, integrate e-commerce capabilities, or connect with external APIs—all while keeping the code tidy and well-documented. Once we have the add-on ready, I’ll provide you with clear installation instructions and hand-over notes, so you feel confident in managing the plugin. I look forward to discussing how we can bring your vision to life. Best regards, Saba Ehsan
$70 USD in 4 days
7.8
7.8

I’d start by turning the open-ended SEO, e-commerce hooks, or external API direction into a small plugin contract, then build the core so each feature can be added without rewriting the foundation. The add-on will use namespaced modern PHP/OOP, WordPress hooks, capability checks, sanitization/escaping, and a clean settings or service structure compatible with the latest stable WordPress and PHP versions. I’ll also keep Gutenberg and WP-CLI compatibility in mind where the selected feature requires them. In 3 days, you’ll receive a tested staging demo, a documented one-click ZIP plugin, rollback instructions, extension/localisation notes, and a concise structure, security, and performance walkthrough. I’ve also built a custom WordPress theme with an orders plugin, so I’m comfortable keeping WordPress additions lean and maintainable. Should the first version focus on SEO, e-commerce hooks, or an external API? Muhammad Saad
$180 USD in 3 days
7.9
7.9

With my extensive skills and 6 years of web development experience, I am more than qualified to handle your Custom WordPress Add-On project. My proficiency in CSS, HTML, PHP, SEO, as well as WordPress itself, positions me perfectly to execute all aspects of this project with ease. I understand the exacting standards that a well-built plugin must meet in order to function smoothly within a complex ecosystem like WordPress. Not just crafting plugins that respect WordPress coding guidelines but also ensuring they perform optimally on the most recent WP and PHP versions. My keeps me constantly updated on best practices including WP-CLI, Gutenberg and OOP practices which I believe will greatly help shape the scope of your project. Modularity and scalability are also key features for any successful plugin like the one you need; functionalities may change later and that'll cause less headache if the architecture is right from the start. I build with future needs in mind, so Scaling up or making And with all that said, timely delivery without compromising quality has been my reputation and I intend to achieve it again for your project. Task me with deciphering your digital visions into beautiful realities for an outstanding outcome.
$60 USD in 2 days
8.0
8.0

Hello, I see you're looking to create a custom WordPress add-on that can seamlessly integrate into your existing site. With 7+ years of experience in developing WordPress plugins, I can help you shape the feature set and provide best-practice architectural advice. I focus on writing clean, modular code that adheres to WordPress standards, making future enhancements straightforward. My approach includes thorough documentation, clear installation and rollback instructions, and a concise handover on how to extend or localize the add-on. I pay close attention to security and performance, ensuring that your site remains robust. As we discuss the project, I’d love to know what specific features or functionalities you envision for this add-on. You can check out my work at https://pixoriq.com. Best regards, Ivan Mandinski
$50 USD in 3 days
7.8
7.8

Hi I can and have built secure WP plugins that follow the official wp guidelines. Please view my profile to see my expertise. I look forward to hearing more about the plugin specifics. Thanks for your time and consideration.
$30 USD in 1 day
7.4
7.4

Hi, I can build this as a clean, modular WordPress plugin that can be installed as a standard ZIP and extended later without rewriting the core. I have strong experience with custom WordPress plugins, PHP, APIs, database work and third-party integrations. I can first help you define the initial feature and architecture, then build and test it on your staging server with security, performance and WordPress best practices in mind. I’ll also provide the install/rollback instructions and hand-over notes so another developer can easily extend the plugin later. A few things I’d like to clarify: 1. Which feature should the first working demo target: SEO, e-commerce hooks, or an external API? 2. Does the plugin need to integrate with any existing theme, plugins, custom post types or database data? 3. Do you already have a staging site and target WordPress/PHP versions? I can start now and would be happy to discuss the architecture before development.
$190 USD in 7 days
7.8
7.8

Hello, As the Founder of WellSpring Infotech, a renowned web development firm with a decade of experience, I can confidently say that we are exceptionally skilled in developing lean, secure WordPress plugins just like what you're seeking. Our team has vast experience in WordPress Development, including WooCommerce integration, moreover to match your requirement, our technical expertise is blended with industry best practices. With this professionalism, we can help shape the scope of your add-on and suggest innovative architectures. Adhering strictly to WordPress coding standards is ingrained in our work ethics. We've mastered WP-CLI, Gutenberg, and modern OOP practices which makes us uniquely qualified for this project. Our strategy is all about modularity; building expandable solutions means extra functionality can be seamlessly added without any rewrites. We'll ensure a clean, one-click upload and provide comprehensive documentation to facilitate a smooth handover. I assure you, our 100% client-focused approach coupled with transparent communication will keep you satisfied throughout the project lifecycle. Let's design an add-on that amplifies your website functionality and powers up your online business further! Thank you
$220 USD in 5 days
8.0
8.0

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