Lead Front-End Developer

MACHINE LEARNING TECHNOLOGIES LLC; Ewing Township (NJ); On-site; USD 83,000 - 165,000; Full time

Job summary

MACHINE LEARNING TECHNOLOGIES LLC is seeking a Lead Front-End Developer to drive design and development of scalable web applications, collaborating with backend and DevOps teams. You will own front-end decisions, implement reusable components, and ensure accessibility and cross-browser compatibility.

Ideal candidates will have deep React/Angular expertise, strong UI/UX sense, and working knowledge of backend concepts to support end-to-end development.

Qualifications

• Expert-level experience with React.js and Angular (both).
• Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3.
• Experience with modern state management (Redux, NgRx, Zustand).
• Hands-on with responsive design frameworks and CSS preprocessors.
• Knowledge of component-based architecture and micro-frontend concepts.
• Experience with Java (Spring Boot).
• Understanding of REST APIs, OAuth2/JWT authentication.
• Basic experience with SQL/NoSQL databases.

Skills

React

Angular

JavaScript

TypeScript

HTML5

CSS3

Redux

NgRx

Zustand

Micro-frontend

Job description

Job Overview

• Job ID: J52404
• Job Title: Lead Front-End Developer
• Location: New jersey, NJ
• Duration: 12 Months + Extension
• Hourly Rate: Depending on Experience (DOE)
• Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, L2-EAD, GC-EAD
• Client: To Be Discussed Later
• Employment Type: W-2, 1099, C2C

Job Summary

We are seeking a Lead Front-End Developer who can drive the design and development of modern, scalable web applications while collaborating closely with backend and DevOps teams. The ideal candidate will have deep expertise in JavaScript frameworks (React/Angular), strong UI/UX sensibilities, and working knowledge of backend technologies to support end-to-end application development.

Key Responsibilities

Front-End Leadership

• Lead the architecture and development of responsive, high-performance web applications.
• Own front-end technical decisions, coding standards, and best practices.
• Translate UX/UI designs into reusable, scalable front-end components.
• Ensure cross-browser compatibility, accessibility (WCAG), and performance optimization.
• Review code, mentor junior developers, and enforce clean code principles.

Backend Collaboration & Exposure

• Work closely with backend teams to define APIs, data contracts, and integration patterns.
• Develop and consume RESTful APIs (and/or GraphQL).
• Understand backend concepts such as authentication, authorization, session management, and caching.
• Perform light backend development or debugging when needed.

DevOps & Quality

• Collaborate on CI/CD pipelines and deployment strategies.
• Implement unit tests, integration tests, and front-end automation frameworks.
• Ensure security best practices (XSS, CSRF, OWASP awareness).
• Participate in Agile/Scrum ceremonies and contribute to sprint planning.

Required Skills & Qualifications

Front-End (Core)

• Expert-level experience with React.js and Angular (both).
• Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3.
• Experience with modern state management (Redux, NgRx, Zustand, etc.).
• Hands-on experience with responsive design frameworks and CSS preprocessors.
• Strong understanding of component-based architecture and micro-frontend concepts.

Backend (Exposure / Working Knowledge)

• Experience with Java (Spring Boot)
• Understanding of REST APIs, API gateways, and authentication mechanisms (OAuth2, JWT).
• Basic experience with databases (SQL/NoSQL) and data modeling concepts.

Equal Opportunity Employer

MACHINE LEARNING TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. MACHINE LEARNING TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters. Nor will MACHINE LEARNING TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract.