Frontend Development Company for Washington

Build Engaging User Interfaces

Flatirons helps businesses craft stunning, high-performance frontends tailored to your needs.

Request a Free Estimate

Fill out the form below to schedule a call.

Our Frontend Development Services

Flatirons offers a variety of frontend development services for creating responsive and dynamic web interfaces.
UI/UX Design

UI/UX Design

We optimize your website’s load times, responsiveness, and overall performance using best practices and modern tools.

Frontend Development

Frontend Development

Our QA team performs thorough testing, including automated and manual QA to ensure your website is bug-free and performs optimally.

Backend Development

Backend Development

We provide ongoing maintenance, updates, and support to keep your web applications running smoothly and securely.

API Development

API Development

We develop secure, scalable REST and GraphQL APIs that enable seamless data exchange and integration across your platforms.

Mobile App Development

Mobile App Development

Our UI/UX design team crafts intuitive, engaging, and accessible user interfaces to enhance user satisfaction and retention.

Front-End Development

Front-End Development

We build high-performance, visually appealing front-end interfaces using modern frameworks like React and Angular to ensure your users have the best experience.

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 Web Apps we Create

We develop various types of web applications, from single-page apps to enterprise solutions.
Healthcare Web Apps

Healthcare Web Apps

Build secure and user-friendly healthcare applications to streamline patient management, test results, and telehealth services.

Learn More
Content Management Systems (CMS)

Content Management Systems (CMS)

Develop and customize CMS platforms that allow easy content updates while maintaining design consistency.

Learn More
Custom Dashboard Development

Custom Dashboard Development

Create customized dashboards tailored to your business needs, aggregating data from multiple sources for comprehensive insights.

Learn More
E-commerce Frontends

E-commerce Frontends

Design robust and attractive e-commerce interfaces that drive conversions and enhance the shopping experience.

Learn More
Mobile-Optimized Web Portals

Mobile-Optimized Web Portals

Build sleek, mobile-optimized portals that deliver a consistent user experience across smartphones and tablets.

Learn More
Real-Time Data Dashboards

Real-Time Data Dashboards

Implement dashboards that provide real-time analytics and visualizations to help you make informed decisions quickly.

Learn More
Progressive Web Apps (PWA)

Progressive Web Apps (PWA)

Develop fast, reliable, and installable web applications that work seamlessly across all devices, enhancing user engagement and retention.

Learn More
Interactive UI/UX Design

Interactive UI/UX Design

Create engaging and user-friendly interfaces with our interactive UI/UX design services, ensuring your application is intuitive and visually appealing.

Learn More

The reviews are in.

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

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 Frontend Technologies

Redux

Redux

Redux is a predictable state container for JavaScript apps, often used with React for managing application state.
Node.js

Node.js

Node.js is a JavaScript runtime environment that enables building fast and scalable server-side applications.
Material-UI

Material-UI

Material-UI provides React components that implement Google's Material Design principles.
TypeScript

TypeScript

TypeScript is a superset of JavaScript that adds static types for better code quality and maintainability.
Next.js

Next.js

Next.js is a React framework for building static and server-rendered applications with enhanced performance.
React logo

React.js

React.js is a widely-used JavaScript library for building dynamic user interfaces and single-page applications.
VIEW ALL

People talk about us.

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

Our Frontend Engagement Models

We offer flexible engagement models to fit your project requirements.

Staff Augmentation

If you just need additional developers to enhance your existing team for frontend projects, our staff augmentation services can help you expand your workforce.View More

Project Outsourcing

If you want to offload the full execution of your frontend development project, you can outsource the project to Flatirons.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 Frontend Development?

Flatirons has the experience and skill to bring your frontend vision to life successfully.
Proven Expertise

Proven Expertise

With a strong track record in delivering high-quality frontend development, Flatirons ensures your project benefits from top-tier skills and industry best practices.
Customized Solutions

Customized Solutions

We tailor our frontend development services to align perfectly with your business goals, providing scalable and efficient interfaces.
Innovative Technologies

Innovative Technologies

Leveraging the latest frameworks and tools, Flatirons delivers modern, fast, and responsive frontend applications.
Dedicated Support

Dedicated Support

Our team offers continuous support and maintenance, ensuring your frontend remains up-to-date, secure, and performance-optimized.
Agile Delivery

Agile Delivery

We follow agile methodologies to deliver your project on time and within budget, with regular updates and stakeholder collaboration.
User-Centric Design

User-Centric Design

Our focus on user experience ensures the interfaces we build are intuitive, accessible, and engaging for your users.
Cost-Effective Solutions

Cost-Effective Solutions

By leveraging efficient development practices and scalable architecture, Flatirons provides cost-effective frontend solutions without compromising quality.
Strong Technology Partnerships

Strong Technology Partnerships

Our collaboration with leading technology providers ensures access to the best tools and resources for delivering innovative frontend projects.
Specialties
Specialties

Hire Top Frontend Developers

We employ expert frontend developers ready to transform your ideas into reality.

Benefits of Frontend Development

Discover the advantages of tailored, high-performance frontend development for your business.

FAQs about Frontend Development

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

A frontend development company specializes in creating the visual and interactive elements of websites and applications, including UI/UX design, responsive layouts, and client-side programming using technologies like HTML, CSS, JavaScript, and frameworks such as React, Angular, or Vue.js.
Hiring a dedicated frontend development company ensures expert design and development, improved user experience, faster delivery times, and access to the latest technologies and best practices, helping your product stand out and meet user expectations effectively.
We use modern frontend technologies including HTML5, CSS3, JavaScript, and frameworks such as React, Angular, Vue.js, and others to build responsive, efficient, and scalable user interfaces.
Yes, we offer comprehensive UI/UX design services to ensure your application is user-friendly, visually appealing, and aligned with your brand, in addition to frontend development.
The development timeline depends on the project scope and complexity but generally ranges from a few weeks to several months to deliver a fully functional, tested, and optimized frontend application.
Yes, we design and develop responsive, mobile-first frontends that work seamlessly across various devices and platforms, ensuring a consistent user experience on desktops, tablets, and smartphones.
We follow best security practices including secure coding, regular security audits, and implementing measures like Content Security Policy (CSP), SSL, and proper authentication to protect your frontend applications from vulnerabilities.
The cost varies based on project complexity, design requirements, features, and technology stack. We provide customized quotes after assessing your specific needs and project scope.
From the Blog

Read about Frontend Development

Start a Tech Company
Business

How to Start a Tech Company: A Beginner’s Guide 2025

Flatirons

Feb 26, 2025
RESTful API and REST API
Development

Difference Between RESTful API and REST API Explained

Flatirons

Feb 20, 2025
Top Web Development Companies in Colorado for 2025
Business

Top Web Development Companies in Colorado for 2025

Flatirons

Aug 25, 2024
Start a Tech Company
Business

How to Start a Tech Company: A Beginner’s Guide 2025

Flatirons

Feb 26, 2025
RESTful API and REST API
Development

Difference Between RESTful API and REST API Explained

Flatirons

Feb 20, 2025
Top Web Development Companies in Colorado for 2025
Business

Top Web Development Companies in Colorado for 2025

Flatirons

Aug 25, 2024
Start a Tech Company
Business

How to Start a Tech Company: A Beginner’s Guide 2025

Flatirons

Feb 26, 2025
RESTful API and REST API
Development

Difference Between RESTful API and REST API Explained

Flatirons

Feb 20, 2025
Top Web Development Companies in Colorado for 2025
Business

Top Web Development Companies in Colorado for 2025

Flatirons

Aug 25, 2024
Start a Tech Company
Business

How to Start a Tech Company: A Beginner’s Guide 2025

Flatirons

Feb 26, 2025
RESTful API and REST API
Development

Difference Between RESTful API and REST API Explained

Flatirons

Feb 20, 2025
Top Web Development Companies in Colorado for 2025
Business

Top Web Development Companies in Colorado for 2025

Flatirons

Aug 25, 2024