JavaScript Development Company for Seattle

Dynamic JavaScript Solutions

Flatirons delivers powerful JavaScript applications tailored for businesses in Seattle, enhancing user experiences.

Request a Free Estimate

Fill out the form below to schedule a call.

Our JavaScript Development Services

Flatirons specializes in creating custom JavaScript applications that meet the specific needs of businesses in Seattle.
Frontend Development

Frontend Development

Our frontend development expertise using JavaScript frameworks ensures captivating and responsive user interfaces.

Backend API Development

Backend API Development

We build robust backend solutions and APIs utilizing Node.js and Express to power your web applications seamlessly.

UI/UX Design

UI/UX Design

Our UI/UX design team crafts intuitive and engaging experiences that enhance customer satisfaction and user interaction.

Quality Assurance Testing

Quality Assurance Testing

We provide extensive QA testing services to ensure your applications are bug-free and perform optimally across devices.

Web Maintenance and Support

Web Maintenance and Support

Our team offers proactive maintenance and support to keep your applications running smoothly and efficiently.

Data Visualization

Data Visualization

Transform data into visually engaging graphics to help businesses make informed decisions with our data visualization services.

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 JavaScript applications, from web apps to interactive solutions tailored to your business.
Single Page Applications (SPAs)

Single Page Applications (SPAs)

Develop dynamic, responsive SPAs using JavaScript frameworks.

Learn More
Progressive Web Apps (PWAs)

Progressive Web Apps (PWAs)

Create reliable and engaging PWAs that work seamlessly offline.

Learn More
E-commerce Platforms

E-commerce Platforms

Build robust e-commerce solutions with full JavaScript support.

Learn More
Real-time Applications

Real-time Applications

Develop applications with real-time functionalities, ideal for chat and notifications.

Learn More
Custom Dashboard Solutions

Custom Dashboard Solutions

Create interactive dashboard solutions using JavaScript and its libraries.

Learn More
Integrations with APIs

Integrations with APIs

Integrate with third-party APIs to enhance application functionalities.

Learn More
Content Management Systems

Content Management Systems

Build custom CMS solutions for easier content management.

Learn More
JavaScript Game Development

JavaScript Game Development

Explore game development with JavaScript for engaging experiences.

Learn More
Health Monitoring Apps

Health Monitoring Apps

Develop health monitoring applications leveraging JavaScript technologies.

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 process involves collaboration and fine-tuning, from initial consultation through to project completion.
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

Node.js

Node.js

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

React.js

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

Next.js

Next.js is a React framework that enables functionality such as server-side rendering and generating static websites.
TypeScript

TypeScript

TypeScript is a superset of JavaScript that compiles to plain JavaScript, adding static typing and modern features.
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 Engagement Models

We provide flexible engagement models designed to fit each client’s unique business requirements.

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 JavaScript Development?

With a strong track record in JavaScript development, Flatirons ensures quality and creativity for your project.
Expert JavaScript Developers

Expert JavaScript Developers

Our team of expert JavaScript developers is skilled at creating responsive and dynamic web applications tailored to your specific needs.
Custom Solutions for Every Project

Custom Solutions for Every Project

We offer customized JavaScript solutions that align with your business goals, ensuring your project stands out in the marketplace.
Proven Track Record

Proven Track Record

With a proven track record of successful JavaScript projects, we bring reliability and expertise to your development needs.
Agile Development Process

Agile Development Process

Our agile development process allows us to adapt to your changing requirements while maintaining high-quality standards.
Cutting-Edge Technologies

Cutting-Edge Technologies

We utilize the latest JavaScript frameworks and tools to develop modern applications that provide a great user experience.
Full Spectrum Development

Full Spectrum Development

From front-end to back-end, our full spectrum development services ensure seamless integration and efficient workflow.
Client-Centric Approach

Client-Centric Approach

We prioritize client needs and maintain clear communication throughout the development process for complete satisfaction.
Specialties
Specialties

Hire JavaScript Development Experts

Our talented team is ready to bring your JavaScript project to life, ensuring high-quality results.

Benefits of JavaScript Development

Discover the advantages of utilizing JavaScript for creating highly interactive and engaging applications.

FAQs about JavaScript Development

Find answers to common questions regarding our JavaScript development services and processes.

As a leading JavaScript development company, we offer a range of services including web application development, mobile app development, UI/UX design, and custom software solutions.
Our team consists of highly skilled developers with extensive experience in JavaScript frameworks like React, Node.js, and Angular, ensuring top-notch solutions for your projects.
We follow an Agile project management approach, allowing for flexibility and adaptability throughout the development process. This ensures timely delivery and client satisfaction.
Absolutely! We have significant experience in integrating various third-party APIs into JavaScript applications, enhancing the overall functionality of your project.
In addition to JavaScript, we specialize in technologies like React, Node.js, Angular, and various cloud services, ensuring a comprehensive tech stack for your development needs.
Yes, we provide ongoing support and maintenance services to ensure your applications run smoothly post-launch, addressing any issues or enhancements as needed.
We implement best practices for security, including regular code audits, use of secure coding standards, and adherence to data protection regulations to keep your applications safe.
The timeline for a JavaScript development project varies based on its complexity. Typically, small to medium projects take about 4 to 12 weeks to complete.
To get a quote for your JavaScript development project, you can contact us through our website or schedule a consultation where we can discuss your requirements in detail.
Yes, we have a diverse portfolio of JavaScript projects, including complex web applications and mobile apps. We’d be happy to share detailed case studies upon request.
From the Blog

Read about JavaScript Development

Top 10 JavaScript Frameworks for 2025
Development

Top 10 JavaScript Frameworks for 2025

Flatirons

Apr 10, 2023
The Best JavaScript IDE and Code Editors for 2025
Development

The Best JavaScript IDE and Code Editors for 2025

Flatirons

Mar 29, 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
The Best JavaScript IDE and Code Editors for 2025
Development

The Best JavaScript IDE and Code Editors for 2025

Flatirons

Mar 29, 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
The Best JavaScript IDE and Code Editors for 2025
Development

The Best JavaScript IDE and Code Editors for 2025

Flatirons

Mar 29, 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
The Best JavaScript IDE and Code Editors for 2025
Development

The Best JavaScript IDE and Code Editors for 2025

Flatirons

Mar 29, 2024
Node.js vs. Flask: Which is Better in 2025?
Development

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

Flatirons

Jun 07, 2023