Junior Frontend Developer Jobs in Chelsea, MA (NOW HIRING)

We are looking for a Front-End Engineer II to design, build, and optimize scalable, high-performance web applications. You will collaborate with product, design, and backend teams to deliver intuitive user experiences. The ideal candidate brings strong proficiency in modern front-end technologies, a customer-obsessed mindset, and a passion for clean, maintainable code.
Key job responsibilities
Design, develop, and maintain responsive, high-performance front-end applications using modern frameworks (React, TypeScript, etc.)
Partner with UX designers, product managers, and backend engineers to translate requirements into polished user interfaces
Write clean, well-tested, and maintainable code following best practices and coding standards
Conduct and participate in code reviews to ensure quality and share knowledge across the team
Identify and resolve performance bottlenecks, accessibility issues, and cross-browser compatibility problems
Contribute to architectural decisions and help define front-end best practices and standards
Mentor junior engineers and support their technical growth
Continuously improve development processes, tooling, and CI/CD pipelines
A day in the life
Amazon offers a full range of benefits that support you and eligible family members, including domestic partners and their children. Benefits can vary by location, the number of regularly scheduled hours you work, length of employment, and job status such as seasonal or temporary employment. The benefits that generally apply to regular, full-time employees include:
1. Medical, Dental, and Vision Coverage
2. Maternity and Parental Leave Options
3. Paid Time Off (PTO)
4. 401(k) Plan
If you are not sure that every qualification on the list above describes you exactly, we'd still love to hear from you! At Amazon, we value people with unique backgrounds, experiences, and skillsets. If you're passionate about this role and want to make an impact on a global scale, please apply!
About the team
This role is for an org that designs, develops, and operates software to monitor, manage and maintain Amazon's robotic warehouse equipment. It owns three core areas: warehouse floor management (ASM maps, layout workflows), operations visualization & troubleshooting (near real-time monitoring tools, maintenance/andon management), and maintenance & system management (work requests, firmware updates, algorithm analysis tools). The long-term vision focuses on foundational autonomous infrastructure, AI-powered maintenance and monitoring, and building scalable APIs and libraries for broader Amazon fulfillment teams
BASIC QUALIFICATIONS
- 4+ years of non-internship professional front end, web or mobile software development using JavaScript, HTML and CSS experience
- 3+ years of computer science fundamentals (object-oriented design, data structures, algorithm design, problem solving and complexity analysis) experience
- Experience using JavaScript frameworks such as angular and react
PREFERRED QUALIFICATIONS
- 3+ years of agile software development methodology experience
- Experience with common front-end technologies such as HTML, CSS, JS, TypeScript, and Node
- Experience with front-end testing frameworks (Jest, Cypress, React Testing Library)
- Knowledge of web performance optimization techniques
Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.
Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you're applying in isn't listed, please contact your Recruiting Partner.
The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits.
USA, MA, North Reading - 143,700.00 - 194,400.00 USD annually