Looking for a top JavaScript developer in St. Louis?

If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. Disadvantages to consider include security such as bugs on the client-side.

To assist you in your search for a partner, we’ve compiled this list of the top JavaScript development agencies in St. Louis. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.

List of the Best St. Louis JavaScript Developers

  • 1

    Spry Digital

    Spry Digital is a digital agency based in St. Louis, Missouri. Founded in 2010, their team of about 20 employees primarily provide mid-market and enterprise businesses with web development, web design, and UX/UI design services.

    Notable Project

    Spry Digital provided developing assistance to a telecommunications firm. They took charge of the client's support and hosting needs with Amazon Web Service through Angular and Node on the backend. With additional assistance coming from its expertise with the client's byFlow, they increased sales by 25%.

    "Our sales have grown exponentially, and I attribute much of that to their work with the backend."  VP, Telecommunications Firm

    Former clients
    Arts & Education Council of St. Louis
    Emerson Climate Technologies
    Metropolitan St. Louis Sewer District
    $ $ $ $ $
    equalizer $50,000+
    group10 - 49 Employees
    place St. Louis, MO
    4.9
    4.9
    8 Clutch reviews
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  • 2

    Matchbox Design Group

    Digital marketing company Matchbox Design Group has developed its expertise in web design and development, SEO, branding, and digital marketing strategy since its founding in 2006. The small team of just over 10 employees is headquartered in St. Louis, Mo.

    Notable Project

    When a fire safety company noticed its website was outdated and had a poor user experience, it hired Matchbox Design Group to redesign and redevelop the site. While the fire safety company's old site focused on relaying information, the new version was more oriented to attracting new customers and boosting sales. The project included WordPress development, graphic design, and SEO.

    Everyone in the company is happy with the new site—it represents our company much better. Our customers have also given lots of positive feedback, saying it’s easier to navigate and find the information they want. .. They met all our deadlines; although we did have some minor communication issues." – Market Development Manager, Fire Safety Company

    Former clients
    Quincy.edu
    Meds & Food For Kids
    Imperial
    Des Peres Hospital
    Brown School at Washington University in St. Louis
    $ $ $ $ $
    equalizer $10,000+
    group10 - 49 Employees
    place St. Louis, MO
    4.8
    4.8
    22 Clutch reviews
    Awards

    St. Louis Small Business Monthly: 2013 Best in Web Design Award , 2013 Missouri Excellence Award

  • 3

    Digital Radium

    Digital Radium is a high-end software development company founded in 2020 in St. Louis, Missouri. With about 3 employees on board, they offer web development, mobile app development, and e-commerce development to small and medium-sized businesses across several industries, the main ones being business services, manufacturing, and financial.

    Notable Project

    Digital Radium acted as the marketing agency partner for a soil stabilization company that was looking for a one-stop-shop for all marketing and digital needs. Their work involved web development from scratch as well as SEO, resulting in a product that exceeded the client's expectations. Helpful advice and clean communication were highlights of the collaboration.

    "They came up with the proper keyword research that matches our industry and helped us rank for some of the competitive keywords." – CEO, Soil Stabilization Company

    Former clients
    ASR Tech Group
    STL Polyjack
    LACRM
    $ $ $ $ $
    equalizer $5,000+
    group2 - 9 Employees
    place St. Louis, MO
    5.0
    5.0
    3 Clutch reviews
  • 4

    STL Website Development

    STL Website Development was founded in 2017 and is headquartered in St. Louis, Mo. They have a team of around three employees who focus on web development and design.

    Notable Project

    Working from scratch, the team updated the look and feel of a community church website. The partner was satisfied with the quality of the new site as well as the collaborative spirit of STL Website Development.

    "They invited me into their world and shared the process with me as a partner." Pastor, Christian Chruch

    Former clients
    Galaxy Radio
    Urban K-Life
    VNV-Digital
    $ $ $ $ $
    equalizer $1,000+
    groupFreelancer Employees
    place St. Louis, MO
    5.0
    5.0
    2 Clutch reviews
  • 5

    PC40 Interactive

    PC40 Interactive is a St. Louis, Missouri-based e-commerce development company. The small team focuses on e-commerce development, web development, custom software development, mobile app development, and more and was established in 2006.

    Notable Project

    PC40 Interactive developed a website for an IT consulting firm using WordPress. They have used PHP for some custom functions, as well.

    "They created an excel sheet that had all my inputs, it was a good learning for me too."

    $ $ $ $ $
    equalizer $1,000+
    group2 - 9 Employees
    place St. Louis, MO
    5.0
    5.0
    1 Clutch review
  • 6

    Data Dynamics, Inc.

    Data Dynamics, Inc. is an IT consulting company based in Ballwin, Mo. with more than two professionals. Since 2010, they have provided IT managed services, IT staff augmentation, and cloud consulting solutions for clients ranging from small firms to large businesses.

    Notable Project

    Data Dynamics, Inc. provided various services for a testing lab. The lab needed an e-commerce platform set up, as well as some various IT needs. Data Dynamics, Inc. was able to collaborate well with the lab.

    “What’s clear to me is that they’re very thorough at understanding requirements and building against them.” - Former President, Testing Lab

    Former clients
    TKC Holdings
    Hussmann
    Berkley Insurance
    $ $ $ $ $
    equalizer $5,000+
    group2 - 9 Employees
    place Ballwin, MO
    4.7
    4.7
    5 Clutch reviews
Tell us about your project
NEED HELP SELECTING A COMPANY?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

TELL US ABOUT YOUR PROJECT