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Frontend Developer Engineer Jobs in Boulder, CO (NOW HIRING)

UI/UX Front End Engineer

Boulder, CO ยท On-site

$125 - $150/hr

The Ideal Web Developer selected will be located in the Boulder, CO, however the role could operate remotely for the right candidate. Responsibilities Duties of the UI/UX Front End Engineer selected ...

The Ideal Web Developer selected will be located in the Boulder, CO, however the role could operate remotely for the right candidate. Duties of the UI/UX Front End Engineer selected will include the ...

UI/UX Front End Engineer

Boulder, CO ยท On-site +1

$78K - $117K/yr

The Ideal Web Developer selected will be located in the Boulder, CO, however the role could operate remotely for the right candidate. Responsibilities Duties of the UI/UX Front End Engineer selected ...

Senior Front-End Engineer

Longmont, CO ยท On-site

$150 - $200/hr

THE OPPORTUNITY We're looking for a Senior Front-End Engineer to take ownership of our front-end platform and to multiply the team's output by being thoughtful, opinionated, and AI-fluent in how that ...

Basic Position Requirements (Front-End Engineer) Facebook Integration Experience Mobile Development Experience (iOS and Android) Familiar with HTML5 Comfortable designing HTML email templates Keen ...

Frontend Engineer

Golden, CO ยท On-site

$130K - $180K/yr

As a Frontend Engineer at Loft, you will work on a range of projects, including refining the UI of Cockpit, our satellite operations software, and empowering end-users with powerful satellite ...

Frontend Engineer

Golden, CO ยท On-site

$130K - $180K/yr

As a Frontend Engineer at Loft, you will work on a range of projects, including refining the UI of Cockpit, our satellite operations software, and empowering end-users with powerful satellite ...

Frontend Engineer

Golden, CO ยท On-site

$140K - $190K/yr

As a Frontend Engineer at Loft, you will work on a range of projects, including refining the UI of Cockpit, our satellite operations software, and empowering end-users with powerful satellite ...

As a Frontend Engineer, you will work on enhancing the UI of satellite operations software and collaborate with the Software team to improve user experience and maintain web applications.

Sr. Optimizely Developer

Arvada, CO ยท On-site +1

$117K - $154K/yr

We want an engineer who is not just a master of the Optimizely stack, but someone who is highly AI ... Experimentation & Personalization (Frontend Execution) * * Complex Test Engineering: Code and ...

Job Title: Front-end Software Developer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required:

Sr. Optimizely Developer

Denver, CO ยท Remote

$118K - $155K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Full Stack Software Developer/Engineer Job Category: Engineering Time Type: Full time Minimum ... Front End Experience developing within Linux environment Willingness to work across Full Stack of ...

Showing results 21-40

Frontend Developer Engineer information

See Boulder, CO salary details

$63.3K

$144.1K

$205.3K

How much do frontend developer engineer jobs pay per year?

As of Sep 9, 2026, the average yearly pay for frontend developer engineer in Boulder, CO is $144,087.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,200.00 and $167,500.00 per year, depending on experience, location, and employer.

What is a frontend developer engineer?

Frontend Developer Engineers are professionals who design, build, and maintain the user interface and user experience of websites or web applications. They use technologies like HTML, CSS, and JavaScript to create responsive and interactive designs that work across different devices and browsers. Their role often involves collaborating with designers and backend developers to ensure seamless integration of visual elements and server-side logic. Frontend Developer Engineers also optimize web performance and accessibility to provide the best possible experience for users.

How do frontend developer engineers typically collaborate with designers and backend developers during a project?

Frontend Developer Engineers work closely with UX/UI designers to translate design mockups into interactive web interfaces, ensuring fidelity to the intended user experience. They also coordinate regularly with backend developers to integrate APIs and ensure seamless data flow between the client side and server side. Effective communication, participation in agile ceremonies, and using collaboration tools like Git, Jira, or Figma are essential for aligning on project requirements, managing dependencies, and resolving issues quickly.

What are the key skills and qualifications needed to thrive as a frontend developer engineer, and why are they important?

To thrive as a Frontend Developer Engineer, you need proficiency in HTML, CSS, JavaScript, and a solid understanding of responsive design, typically supported by a degree in computer science or a related field. Experience with frameworks like React, Angular, or Vue.js, as well as familiarity with version control systems such as Git, are commonly required technical skills. Strong problem-solving abilities, attention to detail, and effective communication help you collaborate with designers and back-end engineers. These skills are essential to create user-friendly, high-performance web applications that meet both technical and business requirements.

What is the difference between Frontend Developer Engineer vs Frontend Developer?

AspectFrontend Developer EngineerFrontend Developer
Required CredentialsBachelor's in CS or related field, proficiency in HTML, CSS, JavaScriptBachelor's in CS or related field, proficiency in HTML, CSS, JavaScript
Work EnvironmentCollaborates with cross-functional teams, involved in technical implementationFocuses on UI/UX, coding, and visual aspects of websites
Employer & Industry UsageTech companies, startups, agenciesWeb development firms, tech companies, freelance projects
Common Search & ComparisonYesYes

The main difference between a Frontend Developer Engineer and a Frontend Developer lies in the scope of responsibilities. The Engineer role often emphasizes technical implementation, collaboration with backend teams, and sometimes includes more complex problem-solving. Both roles require similar credentials and are used across similar industries, but the Engineer title may suggest a more technical or integrated position within development teams.

What cities near Boulder, CO are hiring for Frontend Developer Engineer jobs?

Cities near Boulder, CO with the most Frontend Developer Engineer job openings:

UI/UX Front End Engineer

Boulder, CO โ€ข On-site

Lynker Corporation
Scientific Research and Development Servicesย โ€ขย 201 - 500 employees

$125 - $150/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 21 days ago


Job description

Overview

Lynker is seeking a detail-oriented UI/UX Front-End Engineer to support a long term contract with the Space Weather Prediction Center (SWPC) at the National Centers for Environmental Prediction (NCEP). SWPC operates 24/7, monitoring space weather conditions that impact national security, satellite operations, aviation, power grids, and emergency management.

In this role, you will build and refine the front-end user interfaces, accessible designs, and visual features for both the primary operational site (spaceweather.gov) and the experimental testbed site (testbed.spaceweather.gov). Working alongside web application scientific developers, you will translate complex scientific data into clean, responsive, and intuitive web interfaces built on Drupal 10.

This position plays a critical role in the research-to-operations (R2O) process by enabling the integration of new models, data sources, and processing workflows into operational test environments. The Ideal Web Developer selected will be located in the Boulder, CO, however the role could operate remotely for the right candidate.

Responsibilities

Duties of the UI/UX Front End Engineer selected will include the following:

  • UI/UX & Drupal Engineering: Build, theme, and maintain scalable front-end components within Drupal 10, ensuring high-fidelity visual translation from design comps to responsive web environments.
  • Scientific Developer Collaboration: Partner closely with backend scientific developers to integrate UI components, interactive dashboards, and visual tools with underlying data streams and web services.
  • Design System & Component Architecture: Develop clean, modern, and reusable front-end assets using modern web standards (HTML5, CSS3/SASS, JavaScript/TypeScript) and Drupal theme frameworks.
  • User Experience & Accessibility: Craft accessible, mobile-first user flows for complex space weather maps, charts, and forecasts in alignment with federal Section 508 / WCAG standards.
  • Cross-Browser & Responsive Optimization: Test and optimize front-end interfaces across major browsers, devices, and viewports to ensure seamless visual consistency and performance.
Qualifications

The UI/UX Front End Engineer selected should have the following:

  • A Bachelor's Degree in Computer Science, Web Engineering, Interactive Design, or a related technical field (or equivalent experience)
  • Experience: 5+ years of dedicated web development and UI/UX front-end engineering experience.
  • CMS Expertise: Demonstrated experience custom-theming and building front-end components in Drupal 10 (Twig, custom layouts, Drupal render API).
  • Core Tech Stack Mastery: High proficiency in HTML5, CSS3/SASS, JavaScript (ES6+), and modern CSS layouts (Flexbox, CSS Grid).
  • High Design Fidelity: Strong eye for visual detail and commitment to producing polished, high-quality user interfaces.
  • Version Control: Proficiency with Git and standard collaborative development workflows.

The Ideal Web Developer will have the following:

  • Experience engineering data visualizations or mapping interfaces for scientific, meteorological, or geospatial applications (e.g., Leaflet, OpenLayers, Chart.js, or D3.js).
  • Hands-on experience with Federal Section 508 web accessibility compliance and testing tools.
  • Familiarity with containerized local development workflows (e.g., Docker, DDEV, or Lando).
  • Experience collaborating with scientific, engineering, or research teams in an Agile environment.

About Lynker

Lynker is a growing, employee owned, small business, specializing in professional, scientific and technical services. Our continually expanding team combines scientific expertise with mature, results-driven processes and tools to achieve technically sound, cost effective solutions in hydrology/water sciences, geospatial analysis, information technology, resource management, conservation, and management and business process improvement.

We focus on putting the right people in the right place to be effective. And having the right people is critical for success. Our streamlined organization enables and empowers our talented professionals to tackle our customers' scientific and technical priorities - creatively and effectively.

Lynker offers a team-oriented work environment, and the opportunity to work in a culture of exceptionally skilled professionals who embrace sound science and creative solutions. Lynker's benefits include the following:

  • Comprehensive healthcare for the employee at no monthly cost
  • Healthcare benefit covers medical, prescription drug, dental, and vision
  • Personal Time Off (PTO) Policy plus paid holidays
  • Highly competitive compensation plan regularly calibrated against industry and location benchmarks
  • 401(k) retirement plan with company-matching
  • Employee Stock Ownership Plan (ESOP) - we're all company owners!
  • Flexible spending accounts
  • Employee assistance program (EAP)
  • Short- and long-term disability insurance
  • Life and accident insurance
  • Tuition assistance/Training/Workforce improvement reimbursement per year
  • Spot bonuses for exceptional performance
  • Annual Employee Recognition Awards with bonuses
  • Employee Referral Program
  • Free centralized, self-directed Learning Management System to learn at your own pace
  • Personalized career growth plans for every employee

Lynker is an E-Verify employer.

Lynker is an equal opportunity employer and makes all employment decisions based on merit, qualifications, and business needs. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, marital status, veteran status, or any other legally protected status under federal, state, or local laws.

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