Mid Level Front End Developer Jobs

About Cook Systems

For over 30 years, Cook Systems has partnered with organizations across the country to solve technology challenges and build strong technology teams. As a veteran-owned IT consulting company, we combine decades of industry experience with a continued focus on how technology, AI, and the way people work are evolving. Our work spans technology consulting, talent development, and AI-enabled solutions. We value people who take ownership, adapt quickly, communicate well, and care about the quality of their work. Whether you’re early in your career or bringing years of experience, you’ll have the opportunity to keep building your skills, contribute to meaningful client work, and grow with a company that continues to evolve with the industry.

Summary

Join our agile software development team as a Senior Frontend Developer. You will be responsible for designing, developing, and maintaining high-traffic, customer-facing web experiences using technologies such as JavaScript, React, Node.js, Next.js, HTML, CSS, and Sitecore CMS. Collaborate with cross-functional teams to enhance architecture and design, participate in code reviews and Scrum ceremonies, and drive initiatives for scalability, performance, and continuous improvement.

Responsibilities

- Develop and maintain web solutions using Node.js, Next.js, React, and Sitecore CMS.
- Participate in Agile/Scrum ceremonies and contribute to iterative software delivery.
- Collaborate with cross-functional team members on architecture and technical design decisions.
- Participate in code reviews and provide constructive technical feedback.
- Write unit tests and ensure the quality, reliability, and maintainability of code.
- Lead engineering initiatives when called upon.
- Maintain, enhance, and document existing systems and applications.
- Troubleshoot production issues and provide after-hours support when required.
- Contribute to the development of scalable, high-performing customer-facing web applications.

Required Qualifications

- Bachelor’s degree in Computer Science, a related analytical field, or equivalent professional experience.
- 5+ years of experience designing, developing, and supporting customer-facing e-commerce websites and APIs.
- 5+ years of experience with HTML, CSS, and JavaScript.
- 3+ years of experience developing websites using modern frontend JavaScript frameworks.
- 2+ years of experience with React.js.
- 2+ years of experience developing websites or applications running on Node.js.
- 1+ years of experience working with Agile software development methodologies and Scrum.

Preferred Qualifications

- 7+ years of experience designing, developing, and supporting customer-facing e-commerce websites and APIs.
- Experience with Git-based source control and Microsoft Azure DevOps.
- Experience with Next.js.
- Experience with unit testing and automated testing frameworks.
- Experience building highly scalable systems and performing application performance tuning.
- Experience with analytics, feature flagging, and experimentation platforms such as Google Tag Manager, Optimizely, LaunchDarkly, and Adobe Analytics.
- Experience developing websites that meet WCAG/ADA accessibility standards.

What You’ll Gain

- Hybrid work flexibility with opportunities for both focused remote work and in-person collaboration.
- The opportunity to work on high-impact customer-facing digital products.
- Exposure to modern web technologies, cloud platforms, automation, and emerging AI initiatives.
- A collaborative engineering environment that values autonomy, innovation, continuous learning, and technical excellence.
- Opportunities to contribute to architecture and technical strategy.

Benefits At Cook Systems

We want our employees to have benefits that support their health, financial well-being, and life outside of work. Eligible Cook Systems employees have access to a comprehensive benefits package beginning the first of the month following their hire date, including:
- Medical coverage through Blue Cross Blue Shield, with two plan options
- Dental and vision coverage
- Life, critical illness, and accident insurance through Unum
- Flexible Spending Account and Dependent Care FSA options through Navia
- Health Gap Insurance through Sun Life
- 401(k) retirement plan through The Standard, with eligibility after six months

Beyond benefits, Cook Systems is a place where we expect people to take ownership of their work, communicate openly, continue learning, and contribute to the teams and clients they support. We have been building technology careers and client partnerships for more than three decades, and we continue to evolve with the industry. If you’re looking for an opportunity to do meaningful work, develop your capabilities, and be part of what comes next in technology, we’d like to hear from you.