jQuery Development Services

Clean, Fast, Dependable jQuery That Works.

From legacy system support to modern UI enhancements — built to perform across every browser.

Why Choose Us

jQuery expertise without the shortcuts

Stable, browser-compatible jQuery for teams that can't afford shortcuts.

Legacy System Fluency

We navigate aging codebases with the same discipline we bring to greenfield work — identifying risk, reducing technical debt, and keeping systems stable.

Cross-Browser Reliability

Cross-browser interfaces built and tested to perform consistently — no surprises in production across environments.

Seamless Modern Integration

We integrate jQuery into contemporary architectures alongside React, Angular, and REST APIs — bridging what exists with what your product roadmap demands.

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Our Proven Track Record

Delivering Results

Healthcare & Wellness
Byram Healthcare

First Factory modernized Byram's legacy front-end stack, migrating a ReactJS application while maintaining jQuery-based dependencies in their customer service and e-commerce tools. Work included insurance integrations for their breast pump division, directly enabling new revenue capture under ACA coverage mandates.

Education
Ascend Learning

Across six-plus years and multiple brands — including ATI Testing, NASM, and ClickSafety — First Factory engineers maintained and extended jQuery-reliant interfaces within Ascend's broad learning platform portfolio, while managing complex authentication flows and improving backlog velocity for seasoned stakeholders.

our service

Command of jQuery

Precise, tested, built to last in your stack.

DOM Manipulation & Events

We build responsive, dynamic interfaces using jQuery's core strengths — efficient DOM traversal, event delegation, and manipulation at scale.

Plugin Dev & Integration

We author custom jQuery plugins and integrate established libraries to extend functionality without introducing instability or unnecessary dependencies.

AJAX & API Connectivity

Asynchronous data loading, form submissions, and real-time UI updates via jQuery's AJAX methods — integrated cleanly with REST and legacy APIs.

Performance & Compatibility

Minification, deferred loading, and selector optimization keep jQuery fast — tested across browsers and paired with modern build pipelines.

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Why First Factory

The Competitive Difference

For more than 25 years, we have partnered with companies to accelerate go-to-market, improve user outcomes, and deliver tangible business results.

Time Zone Alignment

Costa Rica is 1–2 hours behind Eastern Time. No 12-hour lag, no async-only collaboration. Our teams communicate in real time and attend your standups live.

Security Posture Built In

SOC 2 Type 2 certified. Full MDM device management. Background checks for every hire. Dedicated full-time IT Security Officer. Your IP is protected.

Design + Engineering Under One Roof

Our Costa Rica design team handles UX/UI for client projects, keeping design and development tightly coordinated. There are no handoff gaps or delays iterating.

No Long-Term Lock-In

No minimum contract length on resources. We require written notice to ramp down based on contract terms. You scale based on your needs, not our revenue targets.

Our Guarantee

If  you're unsatisfied — for any reason — at any point during the first 30 days of your project, you can walk away on the spot. No penalties, no questions asked.

25+
Years of experience
175+
Full-time employees
3+ years
Average client tenure
5X
Inc. 5000 Honoree
Engagement Models

Your needs, your way of working.

The right engagement model reduces risk, accelerates delivery, and lowers total cost.

Staff Augmentation

Dedicated full-time engineers who become a natural extension of your team, working in your time zone and integrating into your existing workflows.

Handpicked for ideal fit
Complete transparency
Your team may interview candidates
Engineering Manager oversight
Adapts to your processes
100% committed to you
40hrs per week, billed hourly
30-Day Satisfaction Guarantee
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Scrum Teams

Self-organizing, collaborative teams who deliver high-quality software in two-week sprints with complete transparency and regular stakeholder engagement.

Complete project management
Engineering architecture
Scalable engineering team
QA Resources
Pick & choose Agile ceremonies
Exceptional communication
Seamless integration with your team
Flexibility to pivot as needed
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Milestone-Based Projects

Fixed-price custom development with guaranteed pricing, clearly defined scope, and dedicated project management from concept to post-launch support.

Clear up front scope defined
Fixed price, billed in 3 installments
Fully independent team
Complex challenges tackled first
High transparency & alignment
Structured UAT window
Post-release support
Easy transition to maintenance
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Specialized Services

Assisting you with strategy, implementation, and maintenance

We offer packages that help you achieve business outcomes and provide long-term product support.

Consulting

Expert guidance to evaluate software solutions, compare build vs. buy options, and optimize your development processes through strategic analysis and recommendations.

Service Contracts

Ongoing maintenance and support agreements available as fixed-price annual contracts or hourly arrangements with specific SLAs tailored to your post-launch needs.

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Frequently asked questions

Everything you want to know clearly explained

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