< JavaScript Development />
Get expert JavaScript development from a seasoned freelancer with 12+ years of full-stack experience.
From 100+ reviews
const config = require('./path/to/kegan'); const config = { settings: { custom: { expertise: { languages: ["ES6+", "TypeScript", "Node.js", "jQuery"], javascript: { frontendFrameworks: true, serverSide: true, apiDevelopment: true, testing: true } } } } }; module.exports = config;
All of your JavaScript development needs
Whether you have no web presence, or a pre-existing website, get effective solutions for your JavaScript needs.
Build
Build interactive, high-performance web applications from the ground up.
Grow
Add complex functionality, API integrations, and real-time features.
Maintain
Keep dependencies updated, code optimized, and applications secure.
JavaScript development services
JavaScript services from an expert with a decade + of design, development, SEO, and analytics experience.
Front-End Development
Interactive, performant user interfaces using modern JavaScript, from vanilla ES6+ to full framework implementations.
Reusable components
Smart component separation
Custom hooks
Modern ES6+ syntax
Back-End Development
Smart state management, with built in JavaScript features, to ensure data is shared only where and when it’s needed.
Local state
Global state
Form state
Performance tuning
API Integration
Comprehensive testing, using industry-standard tools, for all components.
Unit tests
Integration tests
Async behavior
Webhook handling
Testing & Performance
Comprehensive testing strategies and performance optimization to ensure your JavaScript applications run smoothly.
Secure auth flows
User input sanitation & validation
Keep dependencies updated
Token based auth
Benefits of working together
Over the years, I’ve built and maintained over 500 websites, delivering solutions that have reached more than 200 million people worldwide. With deep development expertise, I can quickly diagnose and resolve even the most complex issues—while offering proactive guidance to help prevent problems before they start.
Premium Quality, Independent Pricing
I work directly with the clients who hire me — no project managers or middle layers. When you need something, you can reach me by text, email, or phone. I also integrate seamlessly with your internal tools like Asana, Jira, or Slack to collaborate as part of your team.
Simple, Straightforward Communication
Clean, high-quality code matters — but so do communication, timelines, and collaboration. I keep you in the loop with regular updates, join team meetings, and work within your existing tools to stay aligned every step of the way.
Knowledge You Can Trust, Personality You’ll Enjoy
Over the past 12 years, I’ve built a reputation as a trusted custom JavaScript developer and analytics expert. My experience brings real value to the organizations I work with—but I always approach projects with an open mind and a no-ego attitude.
Minimal Plugins, Maximum Performance
Many JavaScript sites suffer from plugin overload. Often, a client’s request can be handled with a few lines of clean code, but when a well-built plugin is the smarter choice, I use it. My approach is simple: use custom code only when it’s the best solution for the job.
We hired Kegan to build our entire website from the ground up — and he absolutely knocked it out of the park. From the initial concept through to launch, he was responsive, thoughtful, and deeply invested in making sure the site reflected our brand and business goals. Not only did they deliver a clean, modern, and intuitive design, but he also made sure the site was built for performance, SEO, and scalability. Every detail — from UX to backend functionality — was handled with care and expertise. He even put up with my multiple revisions :). Kegan took the time to understand our audience and offerings, and translated that into a site we’re incredibly proud to share with clients and prospects. If you’re looking for a web developer who’s skilled, reliable, and easy to work with, I can’t recommend Kegan highly enough!
Travis Culwell
Marketing & Design, AAA
Working with a freelancer for JavaScript development
Organizations are often hesitant to hire a freelancer over an agency—but with the right freelancer, the benefits can be significant.
CONCERN
SOLUTION
Reliability & Availability
Companies sometimes worry that freelancers won’t be as reliable as an in-house developer or agency, with concerns about slow replies or inconsistent availability.
I offer reliable, well-organized support for every client. My process ensures fast communication and dependable service—you can always reach me when needed. In all my years of freelancing, I’ve never abandoned a project or left a client hanging—something I’ve seen happen even with larger agencies when the right expertise wasn’t available.
Quality & Expertise
Larger organizations sometimes question if a freelancer can match the expertise of a specialized agency.
I have 10+ years of experience building business websites and leading complex projects for enterprise clients, with a strong focus on custom JavaScript development. Quality and expertise are central to everything I do, so you can feel confident you’re working with a skilled professional.
Scalability & Project Size
Mid-size and large companies may worry that a freelancer doesn’t have the resources to take on big or complex projects.
I’ve led large projects while working closely with in-house teams and outside partners. I specialize in scaling JavaScript builds—from complex integrations to large databases—making sure everything runs smoothly and meets your goals.
Security & Compliance
For organizations handling sensitive data, security is a top priority. Some may question whether a freelancer can meet strict security and compliance standards.
Security is built into every project I take on. I follow industry best practices for data protection and compliance, including GDPR, to keep your systems safe. I’ve worked with clients in regulated industries and ensure all requirements are met.
Long-Term Support
Companies often worry that freelancers might not be available for long-term support, which could affect future updates and maintenance.
I offer reliable, ongoing support and maintenance and provide service-level agreements (SLAs) for long-term projects. My focus is on building sites that are easy to maintain and built for lasting success.
Process Integration
Companies may worry that a freelancer won’t easily fit into their in-house teams or existing workflows.
I’m experienced in working closely with in-house teams, adapting to your tools, workflows, and communication style. My goal is to collaborate smoothly and act as a true extension of your team.
Reliability
Organizations often prefer the structured accountability agencies offer and may worry a freelancer won’t bring the same level of professionalism.
I bring the professionalism and reliability you’d expect from an agency, paired with the personal attention of a freelancer. Clear timelines, detailed contracts, and regular updates ensure accountability every step of the way.
Risk of Becoming Dependent
Relying on a single person can feel risky if they suddenly become unavailable.
I reduce that risk by keeping thorough documentation, clear project plans, and writing clean, maintainable code that others can easily take over if needed. Transparency and communication are always a priority.
Limited Access to Tools & Resources
Larger organizations may be concerned that freelancers don’t have access to the same premium tools or enterprise-level resources as agencies.
Through agency and direct-hire work, I’ve used a wide range of advanced enterprise systems. I also rely on premium tools for development, SEO, analytics, and security—making sure your project has everything it needs to succeed.
Lack of Strategic Insight
Companies might think a freelancer doesn’t bring the same level of strategic focus or business insight as an agency.
With years of experience working with mid-size and enterprise clients, I understand how to align development with your strategic goals. I offer insights on SEO, conversion optimization, and key business metrics to ensure every decision supports your objectives.
JavaScript development resources
Before hiring someone for JavaScript development, make sure you understand the fundamentals. Here’s a look at some resources to get you started.
Beginner Resources
Get an elementary understanding of what it takes to bring a JavaScript website to life.
Advanced Resources
Learn the ins and outs of JavaScript & full-stack optimization to make your applications the best they can be.
Featured JavaScript development projects
These are some of my past client projects that feature JavaScript development.
TALLAHASSEE, FL
Web Design, WordPress Development
Level Up Digital Media
Redesigned and rebuilt an old Squarespace website, to be fast, modern, maintainable, and easy to navigate.
5.0
SAN FRANCISCO, CA
WordPress Development
Center for Human Insight
Built custom WordPress theme from in-house design team to allow for easy content creation and increased SEO.
Learn more about Center for Human Insight
5.0
BERKELEY, CA
WordPress Development
A3 Ventures by AAA
Built custom WordPress theme from in-house designers to showcase investment portfolio and projects.
5.0
PALO ALTO, CA
WordPress Development
Writable
Built custom WordPress theme from in-house design team to allow for easy content creation and increased SEO.
5.0
BOSTON, MA
WordPress Development
Sqrrl by Amazon
Extended WordPress environment to drive content marketing initiatives, increase web traffic, and setup knowledgebase.
5.0
NEW YORK, NY
Web Design, WooCommerce Development
Renmac Access
Designed and built a subscription based web application for investors to receive daily updates based on membership level.
Learn more about Renmac Access
5.0
Frequently asked questions for hiring a freelance JavaScript developer
People looking for a solid JavaScript developer tend to ask the same key questions—and for good reason.
What hourly rate do freelancers charge for JavaScript development?
JavaScript developer rates vary significantly by specialization and experience. General front-end JavaScript work ranges from $50–$100/hr, while specialized work with modern frameworks, Node.js backends, or TypeScript typically falls in the $100–$200/hr range. Senior developers with full-stack expertise and architecture experience command the higher end.
How much does custom JavaScript development cost?
$2,000–$10,000 — Interactive Front-End Features
Adding dynamic functionality, form validation, animations, and interactive elements to an existing website.
$10,000–$30,000 — Single-Page Applications
Full SPAs with routing, state management, API integration, and responsive design.
$30,000–$100,000+ — Full-Stack Applications
Complete web applications with Node.js backends, database integration, authentication, and deployment infrastructure.
Is JavaScript still the best choice for web development?
JavaScript remains the dominant language of the web. It’s the only language that runs natively in every browser, and with Node.js, it powers server-side applications too. Its ecosystem is the largest of any programming language, with millions of packages available through npm. Whether you’re building a simple website or a complex web application, JavaScript is almost certainly part of the solution.
What’s the difference between JavaScript and TypeScript?
TypeScript is a superset of JavaScript that adds static type checking. It catches errors at compile time rather than runtime, making code more reliable and easier to maintain—especially in larger projects. I use TypeScript when it adds value, particularly for complex applications and team environments where type safety improves collaboration.
Can JavaScript handle enterprise-level applications?
Absolutely. Companies like Netflix, LinkedIn, Uber, and PayPal run significant portions of their infrastructure on JavaScript and Node.js. With proper architecture, testing, and deployment practices, JavaScript applications scale to handle millions of users.
How do you ensure JavaScript code quality?
I follow established best practices including ESLint for code standards, comprehensive testing with Jest or Vitest, TypeScript for type safety when appropriate, and clean code principles. Code reviews, documentation, and modular architecture ensure the codebase remains maintainable over time.
Is JavaScript good for SEO?
JavaScript-heavy sites can present SEO challenges if not built correctly. I use server-side rendering (SSR) or static site generation (SSG) when SEO is critical, ensuring search engines can crawl and index your content effectively. Modern frameworks like Next.js make it straightforward to build JavaScript applications that are fully SEO-optimized.
Trusted by many for their JavaScript development
Businesses of all types — startups, marketing agencies, SaaS companies, and enterprise teams — trust me to build performant, modern JavaScript applications.
AAA
Amazon
Adobe
UserTesting
Pantera
SJSU
ManyChat
Randy Hetrick
Don’t take my word for it
Businesses of all sizes say I help them streamline internal operations, rank better on Google, save time with automations, and save money with expert-level WordPress development.
Kegan drove the setup, construction, hosting, and maintenance of our website, built around WordPress and third party plugins and templates that he modified and integrated. He also implemented design work done by our in-house design team.
Michael Mace
VP Marketing, User Testing
Kegan helped me visualize a site that works well for my business and showcases our video production work to clients. He is very talented, but also a genuine person who will listen to what you want and create it. We are proud to have people visit our website.
Josh McLawhorn
Founder, Level Up Digital Media