jQuery Developers Who Build Production Web Apps
TESSA Marketing + Technology has been delivering jQuery services since 2012. Our jQuery developers build interactive, performant, and maintainable web applications for global companies, small businesses, and everything in between.
This page covers what TESSA’s jQuery developers do, how our process works, the technical skills our jQuery experts bring to every project, and why companies hire jQuery developers from TESSA when they need reliable software development on the web’s most widely deployed JavaScript library.
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Why Companies Still Hire jQuery Developers in 2026
The “jQuery is dead” narrative is louder than the reality. According to W3Techs, jQuery is used by approximately 73-74% of all websites in 2025-2026, holding roughly a 90% market share among sites that use any known JavaScript library. That makes jQuery — released in 2006 by John Resig — still the most widely deployed JavaScript library on the web, by a significant margin.
The reason isn’t nostalgia. The reason is that jQuery powers tens of millions of production websites, WordPress installations, e-commerce platforms, and internal business applications that work, generate revenue, and don’t need to be rebuilt. Companies hire jQuery developers because rewriting a working jQuery codebase in React or Vue is expensive, risky, and rarely justified by business value.
TESSA’s jQuery developers help companies maintain, extend, and optimize the code that runs their businesses — without forcing them into unnecessary rewrites or risky migrations.
Legacy jQuery Code Maintenance
The vast majority of jQuery work in 2026 is maintenance and incremental improvement of existing codebases. Our jQuery developers specialize in working with jQuery code that’s been in production for years — finding bugs, improving performance, adding new features, and keeping these sites running reliably.
WordPress Development at Scale
WordPress ships with jQuery by default, and a huge percentage of WordPress themes, plugins, and custom builds rely on jQuery. Our WordPress team uses jQuery daily to build the interactive elements that make WordPress sites feel modern, fast, and responsive.
Faster Development for Specific Use Cases
For interactive UI features that don’t justify a full single-page application — accordions, modals, animations, AJAX form handling, dynamic content loading — jQuery still ships faster than spinning up React infrastructure. Our jQuery developers know when jQuery is the pragmatic choice.
Cross Browser Compatibility
jQuery was originally created to solve cross browser compatibility issues. Browser engines have closed most of those gaps, but cross browser compatibility quirks still appear — and jQuery’s battle-tested abstractions still save development time when supporting older browsers or edge cases matters.
Custom Plugins for Specific Business Needs
jQuery’s extensive plugin ecosystem covers most common interactive patterns, but specific business requirements often need custom plugins built from scratch. Our jQuery experts create custom plugins that integrate cleanly with existing codebases without bloating the page or introducing new dependencies.
Modernization Path, Not Forced Rewrites
When a jQuery codebase genuinely needs to evolve toward modern JavaScript frameworks like React, Vue, or vanilla JavaScript, we help companies plan a phased migration — not a risky big-bang rewrite. Our just developers approach: write the right code for today, leave the codebase ready for tomorrow.
What TESSA’s jQuery Development Services Cover
Our jQuery development services span the full lifecycle of engagements — from initial planning and architecture through development, testing, deployment, and post launch support. We deliver services for new builds, ongoing maintenance, and modernization engagements.
Custom jQuery Plugin Development
Our top jQuery developers create custom plugins from scratch for projects with unique interactive requirements. Each plugin we build follows modular coding principles, includes proper documentation, ships with an easy to use api, and integrates cleanly with the broader jquery library and existing application code.
jQuery Performance Optimization
Performance is the most common complaint about jQuery codebases — and most of those complaints are about poor implementation, not the library itself. Our work includes performance audits, code refactoring, selector caching optimization, event handling improvements, and Core Web Vitals work that directly impacts SEO rankings.
AJAX and Dynamic Content
jQuery’s AJAX methods remain a pragmatic way to load dynamic content, submit forms without page refreshes, and build interactive web apps. Our jQuery developers implement AJAX patterns that handle errors gracefully, support modern browsers and older ones, and integrate with REST APIs or GraphQL backends.
jQuery and WordPress Integration
WordPress is one of our most common use cases for jQuery and web development. We build custom WordPress themes and plugins that use jQuery effectively without conflicting with WordPress’s bundled jQuery version or creating compatibility issues with other plugins.
Legacy jQuery Migration
For companies whose jQuery development process started a decade ago, we offer migration services — moving from older jQuery versions to current ones, modernizing patterns, removing deprecated APIs, and reducing technical debt without breaking existing functionality.
Hybrid jQuery + Modern Frameworks
Modern web development often blends jQuery with React, Vue, or native JS. We build hybrid applications where jQuery handles legacy interactive elements while newer code uses current frameworks for state management, component architecture, and complex user interface work.
— TESSA Marketing + Technology
Technical Skills Our jQuery Developers Bring
The best jQuery developers aren’t just developers who memorized jQuery’s API. They’re software development professionals with broad technical skills who understand when jQuery is the right tool, when it isn’t, and how to write code that holds up over time. Our screening process tests for both technical skills and problem solving skills.
Vanilla JavaScript Foundation
Every one of our top jQuery developers has deep expertise in vanilla JavaScript. jQuery is built on top of native APIs, and the best jquery developers know exactly which patterns can be replaced with native browser APIs and which still earn their place in the codebase.
HTML, CSS, and the DOM
jQuery exists primarily to simplify html document traversal and DOM manipulation. Our jQuery experts have strong HTML5 and CSS3 skills, understand the document object model deeply, and can choose the right HTML element for accessibility, semantics, and search engine optimization.
Performance Optimization
Effective jQuery development requires understanding performance trade-offs: minimizing dom manipulation, caching jQuery selectors, using event delegation, and avoiding patterns that block the main thread. Our developers’ related skills include performance tests, Core Web Vitals optimization, and page load budgets.
AJAX, APIs, and Backend Integration
Most production jQuery work involves AJAX requests, REST API integration, and async data handling. Our jQuery developers implement clean async patterns with proper error handling — whether the backend is in PHP, Node.js, or a microservices architecture in another tech stack.
Modern JavaScript Frameworks Familiarity
Even when we’re writing jQuery, we maintain expertise in current frameworks like React, Vue, Angular, and Svelte. That cross-framework experience makes our jQuery developers better at recommending the right architecture and at building applications that can evolve over time.
Communication and Problem Solving
Technical skills are necessary but not sufficient. Our jQuery programmers also bring strong communication skills, problem solving skills, expert knowledge of business context, and a commitment to continuous learning. We hire developers who can explain technical decisions to non-technical stakeholders.
Our jQuery Development Process
Every TESSA engagement follows a clear development process designed to deliver predictable, high-quality outcomes. Our process emphasizes upfront planning, clear communication, and rigorous quality assurance. The process is the same whether we’re building from scratch or maintaining a decade-old jQuery codebase.
Step 1: Discovery and Scoping. Every project starts with discovery — understanding the business goals, the existing codebase (if there is one), the user interface requirements, and the timeline. We document the problem before we start coding. This step alone catches scope creep before it happens.
Step 2: Architecture and Planning. For projects of meaningful size, we plan the architecture before writing code: file organization, plugin boundaries, jQuery plugins to leverage, custom plugins to build, and integration points with the rest of the tech stack. Good architecture saves weeks of refactoring later.
Step 3: Development and Iteration. Our jQuery developers write code in small, reviewable chunks, with regular client check-ins so problems surface early. We use version control, peer code review, and continuous integration to maintain quality. Clients can see progress on the same page they’ll deploy to.
Step 4: Testing and Quality Assurance. Every jQuery deliverable goes through cross browser testing on current browsers and any legacy browsers the project requires, performance tests against page speed budgets, and accessibility validation. We test the things that break in production, not just the happy path.
Step 5: Deployment and Launch. When code is ready, we coordinate deployment with the client’s existing infrastructure — staging environments, DNS, CDN configuration, and monitoring setup. Launch should be uneventful, and it usually is.
Step 6: Post Launch Support. Every TESSA engagement includes post launch support to catch issues in the first weeks after deployment. We offer ongoing support and ongoing maintenance plans for clients who want a long-term partner. This is where many jQuery development company relationships fall apart — and where TESSA excels.
Why TESSA’s jQuery Developers Stand Out
There are many jQuery development companies. Most are either offshore staff augmentation shops or marketplaces matching freelancers to projects. TESSA is something different: a full-service digital marketing and technology agency where jquery developers worldwide work alongside SEO specialists, designers, content strategists, and senior engineers. That breadth changes what we can deliver for our clients.
Extensive Experience Since 2012
TESSA has been building production software for clients since 2012 — over ten years and over nine years before that for our founders. Our extensive experience spans the full evolution of jQuery from version 1.x through current releases, plus the parallel rise of newer frameworks. We’ve seen what holds up over time.
Senior Team With Proven Track Records
Our team includes senior staff with proven track records on production codebases at scale. Every developer goes through our screening process before joining client work. We test for technical depth, communication ability, and the judgment to know when to deviate from “best practices.”
Cutting Edge Solutions When Appropriate
We don’t fetishize new technology, but we deliver cutting edge solutions when they’re the right answer. That means integrating machine learning into web applications, building digital transformation projects that span web and AI, and using modern build tools and architecture decisions that future-proof what we ship today.
Integrated Digital Marketing Capability
Most jQuery development companies build the code and walk away. TESSA pairs jquery development services with SEO, content strategy, conversion rate optimization, and digital marketing — so the application we build also performs in search results and converts visitors into customers. See our SEO services.
No Hidden Costs, Clear Pricing
Our project quotes include everything: discovery, development, testing, deployment, and post launch support. No surprises. No surprise change orders for things that were always in scope. Companies that have been burned by overseas firms or freelance platforms appreciate the difference.
Strategic Partnership for Business Growth
The best client relationships are multi-year partnerships, not single transactions. Our jQuery development work often leads to broader engagements — web design, web application architecture, machine learning integration, and digital transformation roadmaps that support long-term business growth.
Industries TESSA’s jQuery Developers Serve
jQuery’s ubiquity means our jQuery developers work across various industries. We’ve delivered jQuery development services for clients in software and technology, manufacturing, healthcare, nonprofit organizations, government and education, e-commerce, professional services, and hospitality. Each industry has its own constraints — regulatory, performance, accessibility — and our team has the extensive experience to navigate them.
Our jQuery work spans interactive landing pages for marketing campaigns, complex web application interfaces for SaaS products, e-commerce checkout flows, custom plugins for content management systems, and integrations with third-party services. We also handle the front end development for clients whose backend teams have built APIs but need experienced front end development specialists to consume them.
— TESSA Marketing + Technology
Hire jQuery Experts From TESSA: How It Works
Companies that hire jquery experts from TESSA typically engage us in one of four ways. Each model fits different business situations, and we’ll help you figure out which makes sense during the initial consultation.
Project-Based Engagement
For defined-scope work — a custom plugin, a new feature, a performance optimization — we deliver fixed-scope projects with clear deliverables and timelines. This is the most common engagement model for companies that need specific jQuery work without committing to long-term retainers.
Ongoing Retainer
For companies whose web application needs continuous development capacity — new features, ongoing maintenance, performance work, content updates — we offer monthly retainer engagements. These provide predictable cost, consistent team availability, and the deep product knowledge that comes from long-term work.
Staff Augmentation
When in-house teams need specific jQuery skills they don’t have on staff, we provide dedicated jquery programmers who integrate directly with the client’s team — daily standups, shared tooling, joint code review. The client gets specialized capacity without hiring full-time.
Full-Service Web Agency
For companies that need jQuery development alongside design, SEO, content, and digital marketing, TESSA delivers all of it under one roof. This is where our agency model really earns its keep — one team, one accountable partner, no finger-pointing between vendors.
Every engagement starts with a free strategy session. We discuss the project, evaluate fit, walk through similar work we’ve done, and give you a clear scope and pricing proposal. Some clients want a risk free trial — a small initial engagement that proves the working relationship before committing to anything larger. We’re happy to structure engagements that way.
What Sets the Top jQuery Developers Apart
The market is full of developers who claim jQuery expertise. The top jquery developers — the ones worth paying for — share a set of characteristics that go beyond knowing the jquery api. These attributes are what separate jquery programmers from generic web developers.
The best jquery developers approach every problem as a software development problem first and a library-specific problem second. They understand programming languages broadly — JavaScript, PHP, Python, and increasingly TypeScript — and know how to integrate jquery cleanly with whatever else the codebase uses. Web developers who only know jquery, without that broader software development foundation, struggle on real production projects.
A jQuery development company that genuinely invests in continuous learning produces dramatically better outcomes than one that doesn’t. Our developers spend time on continuous learning every week — reading new releases, exploring new front end development patterns, evaluating new tools, and contributing back to open-source projects. Front end development changes constantly. Modern web development demands flexibility. Top jquery developers stay current.
The top jquery developers also bring problem-solving judgment that comes from years of delivering solutions on real codebases. They know which patterns scale and which create bottlenecks. They know when to write custom code and when to use existing plugins. They can read other developers’ work quickly and understand why it was written that way — a critical skill when maintaining legacy applications.
At TESSA, our talented team of jquery experts includes both junior and senior developers, deliberately structured so junior developers learn from experienced ones. This is how we develop the next generation of top jquery developers — and how we ensure project knowledge doesn’t depend on a single person’s availability. The best jquery developers we hire are the ones who can teach other developers what they know.
Every web application our team builds is reviewed by senior developers before deployment. This peer review process catches the kinds of subtle bugs that plague jquery applications: memory leaks from unbinded events, performance issues from inefficient selectors, security gaps from improperly sanitized AJAX requests. Code review by experienced jquery developers is the cheapest insurance you can buy.
Frequently Asked Questions About jQuery Development
Who developed jQuery?
jQuery was developed by John Resig and released in January 2006 at BarCamp NYC. Resig built jQuery to solve the cross-browser JavaScript compatibility problems that plagued web development in the mid-2000s, when Internet Explorer, Firefox, and other browsers each implemented JavaScript and DOM APIs differently.
jQuery is maintained by the jQuery Foundation (now part of the OpenJS Foundation), an open-source community of developers worldwide who continue to release security updates, bug fixes, and incremental improvements. The library is distributed under the permissive MIT License.
Does anyone use jQuery anymore?
Yes. According to W3Techs data from 2025-2026, jQuery is used by approximately 73-74% of all websites globally and holds roughly a 90% market share among sites that use any known JavaScript library. That makes jQuery still the most widely deployed JavaScript library on the web by a significant margin.
Most of that usage is legacy code — sites built during jQuery’s peak (2010-2018) that continue to run on it because rewriting working production code in React or Vue is expensive and rarely justified by business outcomes. WordPress, which powers over 40% of the web, ships with jQuery by default, which alone accounts for a huge portion of that usage. New greenfield projects in 2026 typically choose modern frameworks, but existing jQuery codebases will be maintained for years to come.
Who is the father of jQuery?
John Resig is widely considered the father of jQuery. Resig, an American software engineer, created jQuery in 2006 and led its development through its early years. He has also been a prominent figure in JavaScript education — formerly Dean of Computer Science at Khan Academy, and author of several books including “Pro JavaScript Techniques” and “Secrets of the JavaScript Ninja.”
Resig stepped back from day-to-day jQuery leadership years ago, and the library is now maintained by a team of contributors under the OpenJS Foundation.
Who is the best JavaScript programmer in the world?
There’s no single “best” JavaScript programmer — the language and ecosystem are too large for any single person to dominate. That said, several developers have shaped modern JavaScript in lasting ways:
Brendan Eich created JavaScript itself at Netscape in 1995. John Resig created jQuery in 2006. Douglas Crockford popularized JSON and authored “JavaScript: The Good Parts.” Ryan Dahl created Node.js, bringing JavaScript to the server. Dan Abramov co-created Redux and has been a major contributor to React. Evan You created Vue.js. Rich Harris created Svelte.
The “best” depends on context — what problem you’re solving, what tools you’re using, and what era of the web you’re working in.
Ready to Hire jQuery Developers From TESSA?
If your project needs jQuery development capacity — for maintenance of an existing codebase, new feature development, performance optimization, custom plugin work, or a strategic modernization path — TESSA’s jQuery developers can help.
The next step is a free consultation call. We’ll discuss your project, review your existing code if relevant, and give you a clear proposal: scope, timeline, pricing, and the team that would do the work. No pressure, no obligation, no sales pitch you have to sit through. Just a working conversation about whether we’re the right fit for your business.
What you get: A 30-minute call with TESSA senior leadership. Real technical advice you can act on whether or not you hire us.
What it costs: 30 minutes of your time.
Who it’s for: Engineering leaders, CTOs, marketing executives, and business owners evaluating jQuery development services, web development services, software development partners, or digital transformation work that involves the web.
When it happens: We schedule strategy sessions within 1-2 business days of your inquiry. Most clients move from initial conversation to signed proposal within two weeks.
Book My Free Strategy Call or call 1-800-586-1553 to speak with someone immediately.
For more on TESSA’s broader technical capabilities, see our custom website development services, our SEO services, our software and technology case studies, and our AI agent readiness work for clients moving into the next generation of web technology.
