JavaScript Development Company for Washington

Craft Engaging and Dynamic Applications

At Flatirons, we specialize in JavaScript development to create responsive web applications that enhance user experience and drive engagement.

Request a Free Estimate

Fill out the form below to schedule a call.

Our JavaScript Development Services

Flatirons offers a comprehensive range of services for building dynamic web applications using the latest JavaScript technologies.
JavaScript API Development

JavaScript API Development

Our experts build robust and secure APIs using JavaScript frameworks, ensuring seamless integration and performance.

Frontend Development

Frontend Development

We create interactive and dynamic user interfaces using core JavaScript and popular frameworks such as React and Vue.js.

Backend Development

Backend Development

Our team specializes in creating server-side applications with Node.js and Express, ensuring scalability and efficiency.

Unit Testing and QA

Unit Testing and QA

We apply rigorous unit testing practices to ensure the reliability and performance of JavaScript applications.

Web Application Maintenance

Web Application Maintenance

Our maintenance services keep your JavaScript applications up-to-date and running optimally, with regular updates and support.

Custom Software Development

Custom Software Development

We provide comprehensive custom JavaScript software solutions tailored to meet your unique business needs.

Frontend JavaScript Development

Frontend JavaScript Development

We specialize in building intuitive and interactive frontend applications using modern JavaScript frameworks for dynamic user experiences.

Backend JavaScript Development

Backend JavaScript Development

Our team develops scalable and robust backend systems using Node.js to handle complex data and support high-performance applications.

Quality Assurance and Testing

Quality Assurance and Testing

We ensure the quality of your JavaScript applications through rigorous testing processes including automated and manual testing.

Data Analysis and Visualization

Data Analysis and Visualization

We provide data analysis and visualization services to turn your data into insightful dashboards and reports enhancing decision-making processes.

Our record speaks for itself.

We form long-term relationships with businesses from startups to Fortune 100 enterprises.
3 year
Average client relationship.
5.0 / 5.0
Clutch client rating.
50+
Industry awards.
get in touch

Types of JavaScript Applications We Create

We build a variety of applications including single-page applications (SPAs), progressive web apps (PWAs), and more.
Single Page Applications

Single Page Applications

Create dynamic and responsive single page applications using JavaScript frameworks like React or Vue.

Learn More
Progressive Web Apps

Progressive Web Apps

Enhance user engagement with seamless progressive web apps that work offline and provide a native app-like experience.

Learn More
Real-time Applications

Real-time Applications

Develop applications that require real-time syncing of data, ideal for chat apps and collaborative tools.

Learn More
E-commerce Platforms

E-commerce Platforms

Build robust e-commerce solutions tailored to your business needs, featuring secure payment gateways and user-friendly interfaces.

Learn More
Content Management Systems

Content Management Systems

Create customizable and scalable content management systems to manage content efficiently and improve workflow.

Learn More
Mobile Applications

Mobile Applications

Craft mobile applications using JavaScript frameworks, ensuring they are optimized for performance and usability.

Learn More
API Development

API Development

Design and develop robust APIs that allow different applications to communicate and share data efficiently.

Learn More
Cross-Platform Applications

Cross-Platform Applications

Create applications that work across multiple platforms, using technologies that support both web and mobile environments.

Learn More
Web Applications

Web Applications

Develop modern web applications using JavaScript frameworks like React, Angular, and Vue.js to create interactive and responsive user experiences.

Learn More
Custom APIs

Custom APIs

Develop custom APIs using JavaScript to enable communication between different software components and enhance functionality.

Learn More
Progressive Web Apps (PWAs)

Progressive Web Apps (PWAs)

Create progressive web apps that offer app-like experiences on the web, utilizing modern web capabilities to enhance user engagement.

Learn More
Single Page Applications (SPAs)

Single Page Applications (SPAs)

Build fast and dynamic single page applications where users can interact without refreshing the page, ensuring a seamless user experience.

Learn More
Content Management Systems (CMS)

Content Management Systems (CMS)

Create custom content management systems using JavaScript frameworks to help users manage digital content effortlessly.

Learn More
Dashboards and Data Analytics

Dashboards and Data Analytics

Build interactive dashboards for data visualization using JavaScript libraries like D3.js to help businesses analyze data effectively.

Learn More
Interactive Forms

Interactive Forms

Design interactive and dynamic forms that enhance user engagement by providing real-time validation and instant feedback.

Learn More

The reviews are in.

Award-winning agency with 5.0 rating on Clutch
5.0/5
25 client reviews
Schedule a call

Our Development Process

Our streamlined approach ensures clarity and efficiency, guiding your project from concept to delivery.
Scoping

01

Scoping

We have detailed discussions to understand your requirements, objectives, and challenges.
Proposal

02

Proposal

We provide you with a proposal that outlines scope, timelines, required resources, and costs.
Contact

03

Contract

A contract formalizes our relationship and commitment to delivering the agreed-upon services.
Execution

04

Execution

We kick off the project by dedicating our resources to design and implement the software solution.

A trusted partner for your business.

Heidi Hildebrandt
Flatiron's work optimized site design and flow. The creative lead at Flatirons demonstrated exceptional UX know-how, integrating usability and design to deliver a powerful product. The client came out of the engagement with a wider understanding of the most important platform features.
Heidi Hildebrandt

Director of Product

Schedule a call
Jeremy Zaborowski
With the help of Flatirons Development, we were able to launch a large update to our platform, introducing new innovative tools for our clients. The information was complex but Flatirons found creative ways to present it, making it feel simple and easy to understand.
Jeremy Zaborowski

Co-Founder & CTO

Schedule a call
Storey Jones
They deconstructed our idea and provided it back to us in an incredibly smart and accessible manner. Flatirons Development is constantly solving problems in both a visually stunning and intelligent way.
Storey Jones

Founder and CEO

Schedule a call
Brian Bar
Our company is growing, and as we started looking to scale, we wanted a more efficient business model. We hired Flatirons Development to build a platform that would help connect talent with the right company.
Brian Bar

Founder and CEO

Schedule a call
Heidi Hildebrandt
Flatiron's work optimized site design and flow. The creative lead at Flatirons demonstrated exceptional UX know-how, integrating usability and design to deliver a powerful product. The client came out of the engagement with a wider understanding of the most important platform features.
Heidi Hildebrandt

Director of Product

Schedule a call
Jeremy Zaborowski
With the help of Flatirons Development, we were able to launch a large update to our platform, introducing new innovative tools for our clients. The information was complex but Flatirons found creative ways to present it, making it feel simple and easy to understand.
Jeremy Zaborowski

Co-Founder & CTO

Schedule a call
Storey Jones
They deconstructed our idea and provided it back to us in an incredibly smart and accessible manner. Flatirons Development is constantly solving problems in both a visually stunning and intelligent way.
Storey Jones

Founder and CEO

Schedule a call
Brian Bar
Our company is growing, and as we started looking to scale, we wanted a more efficient business model. We hired Flatirons Development to build a platform that would help connect talent with the right company.
Brian Bar

Founder and CEO

Schedule a call
Heidi Hildebrandt
Flatiron's work optimized site design and flow. The creative lead at Flatirons demonstrated exceptional UX know-how, integrating usability and design to deliver a powerful product. The client came out of the engagement with a wider understanding of the most important platform features.
Heidi Hildebrandt

Director of Product

Schedule a call
Jeremy Zaborowski
With the help of Flatirons Development, we were able to launch a large update to our platform, introducing new innovative tools for our clients. The information was complex but Flatirons found creative ways to present it, making it feel simple and easy to understand.
Jeremy Zaborowski

Co-Founder & CTO

Schedule a call
Storey Jones
They deconstructed our idea and provided it back to us in an incredibly smart and accessible manner. Flatirons Development is constantly solving problems in both a visually stunning and intelligent way.
Storey Jones

Founder and CEO

Schedule a call
Brian Bar
Our company is growing, and as we started looking to scale, we wanted a more efficient business model. We hired Flatirons Development to build a platform that would help connect talent with the right company.
Brian Bar

Founder and CEO

Schedule a call

Our JavaScript Technologies

JavaScript

JavaScript

JavaScript is a versatile programming language primarily used for creating interactive web applications.
Node.js

Node.js

Node.js is a JavaScript runtime built on Chrome's V8 engine, ideal for building scalable network applications.
React logo

React

React is a JavaScript library for building user interfaces, particularly for single-page applications.
Next.js

Next.js

Next.js is a React framework that enables server-side rendering and generating static websites.
Flutter logo

Flutter

Flutter is an open-source UI software development toolkit for building cross-platform applications from a single codebase.
Figma

Figma

Figma is a web-based UI/UX design tool that provides collaborative design capabilities for teams.
React logo

React Native

React Native is a framework for building native apps using React, allowing developers to create mobile applications for both iOS and Android.
AWS

AWS

AWS (Amazon Web Services) provides a robust cloud computing platform offering a range of services including computing power, storage, and databases.
Kubernetes

Kubernetes

Kubernetes is an open-source container orchestration platform designed to automate the deployment, scaling, and management of containerized applications.
Java

Java

Java is a versatile programming language used for building mobile applications, web applications, and large-scale systems.
VIEW ALL

People talk about us.

We have been featured in major publications for our award-winning software development work.
Schedule a call

Our JavaScript Development Engagement Models

We provide flexible engagement models tailored to fit the unique needs of your JavaScript projects.

Staff Augmentation

If you want to offload the full execution of your web app, you can outsource the project to Flatirons.View More

Project Outsourcing

If you just need a few extra hands on your already established team, our staff augmentation services can help you expand your team.View More

The top 1% of design & engineering talent.

Our average employee has 10 years of professional experience in their field.
Schedule a call
“The company treats employees like family and genuinely cares about their well-being.”
Senior Software Engineer

Why Choose Flatirons for Your JavaScript Development?

Flatirons combines expertise and innovation to deliver top-notch JavaScript development services that meet your business goals.
Experienced JavaScript Developers

Experienced JavaScript Developers

Our team consists of seasoned JavaScript developers who bring a wealth of experience and technical expertise to your projects.
Custom Solutions Tailored to Your Needs

Custom Solutions Tailored to Your Needs

We specialize in delivering custom software solutions that fit your unique business requirements and objectives perfectly.
Agile Development Methodology

Agile Development Methodology

We employ agile methodologies to ensure quick iterations and effective project management, leading to faster delivery and enhanced collaboration.
Robust QA and Testing Procedures

Robust QA and Testing Procedures

Our comprehensive quality assurance processes guarantee that your JavaScript applications are robust, secure, and free from bugs.
State-of-the-Art Technology Stack

State-of-the-Art Technology Stack

We utilize the latest technologies and frameworks in JavaScript development to create scalable and high-performance applications.
Local Expertise in the Washington Area

Local Expertise in the Washington Area

Being based in Washington, we understand the local market and can provide tailored services that cater to the specific needs of businesses in the area.
Expert JavaScript Development

Expert JavaScript Development

At Flatirons, we specialize in JavaScript development with a team of experts ready to deliver robust applications tailored to your needs.
Cutting-Edge Technologies

Cutting-Edge Technologies

We leverage the latest JavaScript frameworks like React and Node.js to build fast, scalable applications that drive results.
Comprehensive Solutions

Comprehensive Solutions

From web apps to mobile applications, Flatirons provides comprehensive JavaScript solutions to meet your business's diverse needs.
Client-Centric Approach

Client-Centric Approach

We focus on building strong partnerships with our clients, ensuring clear communication and collaboration throughout the development process.
Timely Delivery

Timely Delivery

Our team is committed to meeting deadlines, ensuring your projects are delivered on time without compromising quality.
Scalable Solutions

Scalable Solutions

We design applications with scalability in mind, ensuring your software can grow as your business does.
Post-Launch Support

Post-Launch Support

Flatirons offers ongoing support even after your project goes live, ensuring seamless operation and management of your application.
Specialties
Specialties

Hire Top JavaScript Developers

Our team of skilled JavaScript developers is ready to bring your ideas to life with cutting-edge technology.

Benefits of JavaScript Development

Discover the advantages of custom JavaScript solutions, including improved performance and user engagement.

FAQs about JavaScript Development

Explore common questions and answers related to our JavaScript development services at Flatirons.

JavaScript development involves the creation of interactive and dynamic web applications using JavaScript, a versatile programming language that runs in web browsers.
JavaScript is essential for creating responsive and interactive web pages. It is supported by all modern browsers and allows for asynchronous communication, enhancing user experience.
We utilize various JavaScript frameworks such as React, Angular, and Vue.js to build scalable and maintainable web applications tailored to client needs.
The development time for a JavaScript application varies based on project complexity, but we provide detailed timelines during the planning phase.
Yes, our team can integrate existing systems with new JavaScript applications, ensuring seamless data exchange and functionality.
Yes, JavaScript can be used for mobile app development through frameworks like React Native, enabling cross-platform apps with native performance.
We follow best practices for secure coding, conduct regular security audits, and utilize libraries and frameworks that are well-maintained and secure.
Yes, we provide ongoing maintenance and support services to keep your JavaScript applications up-to-date and running smoothly.
Choosing a JavaScript development company ensures that you have access to expert developers who can create scalable and efficient web applications tailored to your business needs.
JavaScript offers numerous benefits, including enhanced user interfaces, increased interactivity, better performance through asynchronous operations, and the ability to create responsive designs.
Yes, JavaScript can be used for server-side development through Node.js, allowing developers to build full-stack applications using a single programming language.
We utilize various frameworks and libraries such as React, Angular, Vue.js, and Node.js to streamline JavaScript development and enhance application performance.
We ensure quality through rigorous testing practices, code reviews, and by following best practices and coding standards throughout the development process.
The timeline for JavaScript projects can vary widely based on complexity, typically ranging from a few weeks for smaller projects to several months for larger, more intricate applications.
Yes, we offer ongoing support and maintenance services to ensure your JavaScript applications remain up-to-date, secure, and functional.
From the Blog

Read about JavaScript Development

Top 10 JavaScript Frameworks for 2025
Development

Top 10 JavaScript Frameworks for 2025

Flatirons

Apr 10, 2023
Node.js vs. Drupal: Which is Better in 2025?
Development

Node.js vs. Drupal: Which is Better in 2025?

Flatirons

Jan 07, 2024
Node.js
Business

What is Node.js? An Overview in 2025

Flatirons

Jan 23, 2024
Node.js vs. Flask: Which is Better in 2025?
Development

Node.js vs. Flask: Which is Better in 2025?

Flatirons

Jun 07, 2023
Top 10 JavaScript Frameworks for 2025
Development

Top 10 JavaScript Frameworks for 2025

Flatirons

Apr 10, 2023
Node.js vs. Drupal: Which is Better in 2025?
Development

Node.js vs. Drupal: Which is Better in 2025?

Flatirons

Jan 07, 2024
Node.js
Business

What is Node.js? An Overview in 2025

Flatirons

Jan 23, 2024
Top 10 JavaScript Frameworks for 2025
Development

Top 10 JavaScript Frameworks for 2025

Flatirons

Apr 10, 2023
Node.js vs. Drupal: Which is Better in 2025?
Development

Node.js vs. Drupal: Which is Better in 2025?

Flatirons

Jan 07, 2024
Node.js
Business

What is Node.js? An Overview in 2025

Flatirons

Jan 23, 2024
Top 10 JavaScript Frameworks for 2025
Development

Top 10 JavaScript Frameworks for 2025

Flatirons

Apr 10, 2023
Node.js vs. Drupal: Which is Better in 2025?
Development

Node.js vs. Drupal: Which is Better in 2025?

Flatirons

Jan 07, 2024
Node.js
Business

What is Node.js? An Overview in 2025

Flatirons

Jan 23, 2024