Frontend Developer III

Apex Systems; Jersey City (NJ); Hybrid; USD 140,000 - 180,000; Full time

Job summary

Apex Systems in Jersey City, NJ is seeking a Senior Frontend Developer to join a team building a modern headless digital platform. You will design, implement, and optimize frontend features using React, Next.js, and TypeScript, with SSR/SSG/ISR patterns.

The role combines hands-on development with mentorship, collaborating with UI/UX, backend engineers, and product teams to deliver scalable, high-performance applications and robust test coverage.

Qualifications

• 8+ years frontend development experience.
• Strong experience with Next.js and React.
• Advanced proficiency with TypeScript.
• Experience in headless architecture environments.
• Understanding of SSR/SSG/ISR concepts.
• Experience integrating frontend with APIs and backend services.
• Hands-on with Jest and automated testing.
• Familiarity with Agile/Scrum practices.

Responsibilities

• Design, develop, and maintain responsive web apps using React, Next.js, and TypeScript.
• Build reusable components, hooks, and scalable frontend architectures.
• Integrate frontend apps with RESTful APIs and backend services.
• Collaborate with UI/UX teams to translate designs into quality UX.
• Ensure cross-browser compatibility and responsive design standards.
• Establish and maintain SSR/SSG/ISR strategies and CI/CD pipelines.
• Mentor junior developers and participate in code reviews.
• Improve performance with code-splitting, lazy loading, and caching.

Skills

Next.js

React

TypeScript

Headless architecture

SSR/SSG/ISR

API integration

CI/CD

Jest testing

Agile/Scrum

Mentoring

Job description

Frontend Developer

Location: Jersey City, NJ (Hybrid)

Duration: Contract

Experience Level: Senior (8-10+ years preferred)

Overview

We are seeking a Senior Frontend Developer to join a team building and enhancing a modern headless digital platform. This role is ideal for an experienced engineer who is passionate about creating scalable, high-performance web applications using modern JavaScript frameworks and frontend best practices. The ideal candidate will bring deep expertise in Next.js, React, and TypeScript, along with experience working in headless architecture environments. This individual will contribute as a hands‑on developer while also providing mentorship and technical guidance to junior team members.

Responsibilities

• Design, develop, and maintain responsive web applications using React, Next.js, and TypeScript
• Build reusable components, custom hooks, and scalable frontend architectures
• Integrate frontend applications with RESTful APIs and backend services
• Collaborate with UI/UX teams to translate designs into high-quality user experiences
• Ensure cross-browser compatibility and responsive design standards
• Configure and maintain modern frontend applications built with Next.js
• Implement Server-Side Rendering (SSR), Static Site Generation (SSG), and Incremental Static Regeneration (ISR)
• Establish and support CI/CD pipelines and development workflows
• Promote frontend engineering best practices and coding standards
• Optimize application performance through code splitting, lazy loading, caching strategies, and other modern techniques
• Improve SEO through effective rendering strategies and frontend optimization
• Implement security best practices and content security standards
• Monitor and improve frontend reliability, accessibility, and user experience
• Write and maintain unit tests using Jest and related testing frameworks
• Support end-to-end testing initiatives
• Participate in code reviews and technical design discussions
• Ensure high-quality, maintainable, and well-documented code
• Work closely with backend engineers, architects, product owners, and designers
• Mentor junior developers through code reviews and technical guidance
• Contribute to Agile ceremonies and collaborative planning activities
• Take ownership of features and drive projects through completion

Required Qualifications

• 8+ years of professional frontend development experience
• Strong experience with Next.js and React
• Advanced proficiency with TypeScript
• Experience building applications in headless architecture environments
• Strong understanding of SSR, SSG, and ISR concepts
• Experience integrating frontend applications with APIs and backend services
• Experience with modern CI/CD pipelines and development practices
• Hands‑on experience with Jest and automated testing
• Strong understanding of frontend performance optimization techniques
• Experience working in Agile/Scrum environments
• Excellent communication and collaboration skills

Preferred Qualifications

• Experience with headless CMS platforms
• Experience working with Sitecore JSS or similar technologies
• Familiarity with GraphQL
• Experience with SCSS and modern styling frameworks
• Experience implementing Content Security Policies (CSP)
• Experience with SEO optimization strategies for modern web applications

What Makes You Successful

• Ability to work independently and take ownership of deliverables
• Strong problem‑solving and troubleshooting skills
• Comfortable mentoring and supporting junior developers
• Ability to thrive in a fast‑paced Agile development environment
• Passion for modern web technologies and continuous learning

This position offers the opportunity to work on a modern digital platform using cutting‑edge frontend technologies while helping shape the future direction of the application's architecture and user experience.

EEO Employer Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [e-mail] or 844‑463‑6178.

Everforth Apex is a world‑class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.

Everforth Apex Benefits Overview:

• Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection.
• We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure.
• Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.
• In terms of professional development, Everforth Apex hosts an on‑demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA.
• Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach.
• You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804‑523‑8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.