ZipRecruiter

Log In

1

Junior Frontend Developer React Jobs in Colorado

KORE1 Technologies

Principal Frontend Engineer

Denver, CO · On-site

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Experience with Vue 3+ is preferred, but we're also interested in strong React or Angular engineers ... Design scalable frontend solutions using clean architecture and coding practices. * Conduct ...

KORE1 Technologies

Principal Frontend Engineer

Denver, CO · On-site

$110K - $165K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Experience with Vue 3+ is preferred, but we're also interested in strong React or Angular engineers ... Design scalable frontend solutions using clean architecture and coding practices. * Conduct ...

AgentSync, Inc.

Senior Frontend Engineer

Denver, CO · On-site

$160K - $185K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Build high-quality, accessible, performant features in our React app across multiple product areas * Help shape the path forward for our frontend architecture * Build and extend a shared component ...

Cymertek

Full Stack Developer (ReactJS, Vue, Angular)

Aurora, CO · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... Front End Engineer, React Developer, Vue Developer, Angular Developer, UI/UX Developer, Full Stack Software Engineer, ect. DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science ...

Kanshe Infotech

Sr. React / UI Architect

Denver, CO · On-site

$60 - $65/hr

Provides informal mentoring to junior developers. Responsibilities * Develop and optimize React ... Implement and manage front-end testing using frameworks such as Jest, Cypress, or React Testing ...

Xe Careers

Principal Frontend Engineer

Denver, CO · On-site

$108K - $168K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

About This Role We're looking for a senior frontend engineer to help build and shape the user ... If you're proficient in Vue 3+, that's ideal, but we're equally interested in strong React or ...

Anagh Technologies, Inc.

Lead React Developer

Louisville, CO · On-site

$60.75 - $77.75/hr

Title Lead React Developer-MUI Location: Louisville, CO Duration: 12Months Only 10+ Years with PP ... front end software development experience (not freelance / hobby experience) • Solid ...

Bentley Systems

Sr. Optimizely Developer

Arvada, CO · On-site +1

$117K - $154K/yr

Experimentation & Personalization (Frontend Execution) * * Complex Test Engineering: Code and ... Advanced proficiency in HTML5, CSS3/SASS, and JavaScript (Vanilla, ES6+, jQuery, React/Vue) to ...

Horizontal Talent

Sr. Optimizely Developer

Denver, CO · Remote

$118K - $155K/yr

Partner on server-side testing and feature flagging when frontend testing is not the best fit ... jQuery, React, or Vue. * Deep understanding of Optimizely platform concepts such as Project JS ...

Loft Orbital

Frontend Engineer

Golden, CO · On-site

As a Frontend Engineer, you will work on enhancing the UI of satellite operations software and ... Required : • Strong proficiency in TypeScript / HTML / CSS • Experience with Vue or React • ...

Horizontal Talent

Senior CMS Developer Optimizely

Denver, CO · Remote

$118K - $155K/yr

Partner on server-side testing and feature flagging when frontend testing is not the best fit ... jQuery, React, or Vue. * Deep understanding of Optimizely platform concepts such as Project JS ...

New

Horizontal Talent

Senior Optimizely CMS Developer

Aurora, CO · Remote

$117K - $154K/yr

Partner on server-side testing and feature flagging when frontend testing is not the best fit ... jQuery, React, or Vue. * Deep understanding of Optimizely platform concepts such as Project JS ...

New

previous pagenext page

Showing results 21-40

All JobsFrontend Developer React JobsJunior Frontend Developer React JobsJunior Frontend Developer React Jobs in Colorado

Junior Frontend Developer React information

What is the difference between Junior Frontend Developer React vs Junior Frontend Developer Angular?

AspectJunior Frontend Developer ReactJunior Frontend Developer Angular
Required SkillsProficiency in React, JavaScript, HTML, CSSProficiency in Angular, TypeScript, HTML, CSS
Work EnvironmentOften in startups, tech companies using ReactCommon in enterprise, large-scale applications using Angular
CertificationsReact certifications, JavaScript coursesAngular certifications, TypeScript courses
Industry UsagePopular in web development projectsUsed in complex, scalable web applications

Both roles are entry-level frontend positions requiring knowledge of JavaScript frameworks. React developers focus on building flexible, component-based UIs with React, while Angular developers work with a comprehensive framework for large-scale applications. The choice depends on the company's tech stack and project requirements.

What does a junior frontend developer React do?

A Junior Frontend Developer React is responsible for building and maintaining the user interface of web applications using the React JavaScript library. They work closely with designers and backend developers to implement visual elements, ensure responsiveness, and improve user experience. As a junior developer, they typically handle basic coding tasks, bug fixes, and learn best practices under the supervision of more experienced team members.

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

To thrive as a Junior Frontend Developer React, you need a solid understanding of HTML, CSS, JavaScript, and foundational knowledge of React.js, often supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, code editors such as VS Code, and basic knowledge of RESTful APIs are typically expected. Strong problem-solving abilities, attention to detail, and effective communication skills help you collaborate and adapt in team environments. These competencies ensure you can build responsive user interfaces, integrate with backend services, and contribute effectively to dynamic development teams.

What are some common challenges faced by junior frontend developers working with React, and how can they be overcome?

Junior Frontend Developers using React often encounter challenges such as managing component state, understanding the React lifecycle, and efficiently handling props and state updates. Additionally, collaborating with backend teams and integrating APIs can require careful coordination and clear communication. To overcome these challenges, it's helpful to regularly review React documentation, participate in code reviews, and seek mentorship from more experienced developers. Embracing version control and agile workflows can also make teamwork and project management smoother.
What are popular job titles related to Junior Frontend Developer React jobs in Colorado? For Junior Frontend Developer React jobs in Colorado, the most frequently searched job titles are:
What job categories do people searching Junior Frontend Developer React jobs in Colorado look for? The top searched job categories for Junior Frontend Developer React jobs in Colorado are:
What cities in Colorado are hiring for Junior Frontend Developer React jobs? Cities in Colorado with the most Junior Frontend Developer React job openings:
Junior Frontend Developer React jobs near you
Infographic showing various Junior Frontend Developer React job openings in Colorado as of August 2026, with employment types broken down into 80% Full Time, 6% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Principal Frontend Engineer

KORE1 Technologies

Denver, CO • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 24 days ago

Job description


KORE1, a nationwide provider of staffing and recruiting solutions, has an immediate opening for a Principal Frontend Engineer based in Denver, Co. The role is Hybrid with 3 days onsite each week.

About the Role
We're looking for a Principal Frontend Engineer to help build and shape the user-facing side of our products. You'll bring deep expertise in modern frontend development, a strong understanding of clean architecture, and a collaborative mindset.
In addition to writing high-quality code, you'll mentor other developers, help guide technical direction, and work closely with designers and stakeholders to deliver intuitive, polished interfaces. This is a hands-on position for someone with at least five years of experience who takes ownership of code quality and enjoys raising standards across the team.
Experience with Vue 3+ is preferred, but we're also interested in strong React or Angular engineers who are excited to transition to Vue. Experience in payments, foreign exchange, or another regulated industry is a plus.

What You'll Do
  • Build and maintain reliable, maintainable frontend applications using Vue 3+ and TypeScript.
  • Design scalable frontend solutions using clean architecture and coding practices.
  • Conduct thorough code reviews and uphold high standards for quality across the team.
  • Mentor other developers on architecture, best practices, and clean coding habits.
  • Build responsive and accessible interfaces using Tailwind CSS, HTML5, and CSS3.
  • Write and maintain unit and integration tests using Vitest.
  • Work with modern build tools and bundlers such as Vite.
  • Collaborate with designers to turn UX/UI concepts into intuitive and visually polished experiences.
  • Partner with engineers and stakeholders in an Agile/Scrum environment while contributing to the team's technical direction.
  • Use AI development tools such as Claude Code or GitHub Copilot to improve productivity.
  • Communicate clearly with both technical and non-technical stakeholders.

Required Qualifications
  • Five or more years of experience building production software.
  • Proficiency with Vue 3+, or strong experience with React or Angular and an interest in transitioning to Vue.
  • Strong TypeScript knowledge.
  • A demonstrated commitment to clean, maintainable code.
  • Strong knowledge of frontend architecture and object-oriented programming and design.
  • Experience conducting effective code reviews.
  • Experience mentoring developers on best practices and code quality.
  • Experience with modern Tailwind CSS.
  • Experience writing unit tests using Vitest or Jest.
  • Understanding of JavaScript build tools and module bundlers such as Vite, Rollup, or Webpack.
  • Strong knowledge of HTML5, CSS3, responsive web design, and accessibility principles.
  • Understanding of UX/UI design principles and the ability to collaborate closely with designers.
  • Familiarity with Agile/Scrum methodologies and cross-functional collaboration.
  • Experience with—or an open mindset toward—AI coding tools such as Claude Code and GitHub Copilot.
  • Strong written and verbal communication skills, including the ability to align engineers and stakeholders around a technical direction.

Preferred Qualifications
  • Experience with PostCSS, Sass, SCSS, or similar CSS technologies.
  • Knowledge of end-to-end testing frameworks such as Playwright.
  • Experience with Storybook for component-driven development and UI documentation.
  • Experience in payments, foreign exchange, or another regulated industry.

Perks and Benefits
  • Medical, dental, and vision insurance
  • 401(k) plan with company match
  • Employee stock purchase plan
  • Paid vacation and sick leave
  • Hybrid work schedule
  • Tuition assistance
  • Professional growth opportunities
  • Company gatherings and team-building events
  • Mental health and well-being support through Plumm
  • One paid volunteer day for a charity of your choice



Compensation depends on experience but is typically 110-165k DOE

ABOUT KORE1
Specializing in professional and technical recruiting, KORE1 is committed to supporting top IT, Engineering, Creative, Scientific, Accounting and Finance professionals in their career paths. We build deep relationships with leading companies, connecting them to exceptional talent every day. With extensive industry expertise and unmatched opportunities, our goal is to provide a unique experience for our contractors and consultants as they prepare for their next role. We are passionate about matching the right people with the right companies.

Kore1 provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, Kore1 complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. Kore1 expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Improper interference with the ability of Kore1's employees to perform their job duties may result in discipline up to and including discharge.