React Developer

Job#: 3028148Job Description:Title: Senior Web DeveloperDuration: 12+ month contractPay: $60-$70/hr - W2 OnlyLocation: Dearborn, MI - 4 days onsite, 1 day remoteJob SummaryWe are seeking an experienced Senior React Developer / Front‑End Engineer with 5+ years of professional experience to help design and build scalable, high‑performance web applications with a strong emphasis on Test‑Driven Development (TDD). In this role, you will lead front‑end architecture decisions, build intuitive and accessible user interfaces, and collaborate closely with designers and backend engineers to deliver reliable, user‑centric solutions.The ideal candidate is deeply skilled in the React ecosystem, passionate about clean and maintainable code, and thrives in environments that value testing, thoughtful design decisions, and continuous improvement.Day‑to‑Day ResponsibilitiesDesign, develop, and maintain scalable, performant front‑end applications and reusable UI components using React and modern best practicesDrive development using a test‑first mindset, writing unit, integration, and end‑to‑end tests before or alongside feature implementationIntegrate front‑end applications with RESTful APIs and microservices, ensuring efficient data flow and optimal performanceIdentify, analyze, and resolve performance bottlenecks to provide smooth, low‑latency user experiences across devices and browsersCollaborate closely with UX/UI designers to translate wireframes and high‑fidelity designs into accessible, production‑ready codeParticipate in full‑stack discussions by providing input on API design and understanding application flow from database through browserApply UX best practices and accessibility (WCAG) standards to deliver inclusive, responsive user interfacesConduct code reviews, maintain documentation, and uphold front‑end architecture standards for long‑term maintainabilityMentor team members when appropriate and stay current with emerging trends, tools, and patterns in the React ecosystemQualifications5+ years of professional experience in front‑end or UI developmentDeep expertise in React.js and its ecosystem, including state management solutions such as Redux, Context API, or FluxStrong command of TypeScript (required), JavaScript, HTML5, and CSS3Proven experience with Test‑Driven Development (TDD) practices such as Red‑Green‑RefactorExperience with front‑end build and testing tools such as Webpack, Babel, Jest, and React Testing LibraryDemonstrated ability to build scalable, responsive, and cross‑browser compatible applicationsStrong understanding of UX principles, usability best practices, and web accessibility standardsApex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join 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 ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide.Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join 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 ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide.Apex Systems is part of the Commercial Segment of ASGN Incorporated.NYSE: ASGN4400 Cox RoadSuite 200Glen Allen, Virginia 23060Apex 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 Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.