Senior Frontend Engineer

Quantum Technologies LLC; Weehawken (NJ); On-site; USD 82,000 - 117,000; Full time

Job summary

Quantum Technologies LLC in Weehawken, NJ seeks a Senior Frontend Engineer to design, develop, and maintain enterprise-scale digital banking frontends. The role centers on Angular-based development with exposure to ReactJS within a regulated banking environment.

You will own features from development through production support, collaborate with Product, UX, QA, Security, and Platform teams, and contribute to code reviews while mentoring junior engineers.

Qualifications

• 5+ years of frontend development experience in enterprise environments.
• Strong experience with Angular, including AngularJS and modern Angular.
• Proficiency in HTML5, CSS3, Bootstrap, and Flexbox.
• Experience integrating frontend apps with REST APIs.
• Knowledge of Node.js, npm, and nvm.
• Experience with modular or micro-frontend architectures and shared UI libraries.
• Familiarity with build tools such as Webpack, Gulp, Grunt, Vite, Rollup, or Parcel.
• Experience with Jasmine or Karma testing frameworks.
• Proficient with Git and Agile development practices.
• Experience in financial services or regulated environments.

Responsibilities

• Design, develop, and maintain Angular-based SPAs for digital banking.
• Modernize frontend apps while preserving backward compatibility and stability.
• Implement role- and entitlement-driven UIs with gating and access control.
• Integrate with REST APIs and backend services using JSON contracts.
• Collaborate with backend teams to align API contracts and data models.
• Leverage Node.js for frontend-adjacent tasks and BFF functionality.
• Create and maintain unit tests with Jasmine or Karma.
• Troubleshoot defects and support production performance improvements.
• Support release activities including build, validation, and QA coordination.
• Participate in Agile ceremonies with Product, UX, QA, Security, and Platform.
• Conduct code reviews and mentor junior engineers.
• Ensure frontend security considerations and compliant practices.

Skills

Angular

Frontend architecture

HTML5

CSS3

REST APIs

Node.js

NPM

NVM

Micro-frontend

Webpack

Jasmine/Karma

Git

Agile

Tools

Webpack

Gulp

Grunt

Vite

Rollup

Parcel

Jasmine

Karma

NPM

NVM

Git

Job description

Job Title:Senior Frontend Engineer
Location: Weehawken, NJ
Duration: 8 Months + Extension
Bill Rate: $72/hour (C2C)
Job Type: W-2, 1099, C2C
Client: To Be Discussed Later
Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-4-EAD, Other
Job Summary:

We are seeking a Senior Frontend Engineer to design, develop, and maintain enterprise-scale digital banking applications supporting small and mid-sized business clients.

This role is primarily focused on Angular-based frontend development, with exposure to ReactJS, in a complex and regulated banking environment. The ideal candidate has strong experience working within established enterprise applications, integrating with backend services, and owning features from development through production support.

Key Responsibilities:

• Design, develop, and maintain Angular-based single-page applications supporting digital banking capabilities.
• Enhance and modernize existing frontend applications while maintaining backward compatibility and production stability.
• Develop role- and entitlement-driven user experiences, including conditional rendering, feature gating, and unauthorized-user handling.
• Integrate frontend applications with RESTful APIs and backend services using JSON-based contracts.
• Partner with backend engineering teams to ensure API contracts, error handling, and data models support reliable frontend experiences.
• Utilize Node.js for frontend-adjacent and backend-for-frontend functionality when needed.
• Develop and maintain unit tests using Jasmine, Karma, or similar frameworks.
• Troubleshoot defects, resolve production issues, and support application performance improvements.
• Support release activities including build generation, validation, and QA coordination.
• Participate in Agile ceremonies and collaborate with Product, UX, QA, Security, and Platform teams.
• Conduct code reviews and provide technical guidance to junior engineers.

Required Qualifications:

• 5+ years of frontend development experience in enterprise environments.
• Strong hands-on experience with Angular, including experience across AngularJS and modern Angular versions.
• Strong experience with HTML5, CSS3, Bootstrap, and Flexbox.
• Experience integrating frontend applications with REST APIs.
• Working knowledge of Node.js, npm, and nvm.
• Experience with modular or micro-frontend architectures, shared UI libraries, or independently deployed frontend modules.
• Familiarity with build tools such as Webpack, Gulp, Grunt, Vite, Rollup, or Parcel.
• Experience with frontend testing frameworks such as Jasmine or Karma.
• Proficiency with Git and Agile development practices.
• Experience working in financial services, digital banking, payments, or another regulated environment.

Preferred Qualifications:

• Experience with payments, transfers, bill pay, or entitlement-based banking workflows.
• Exposure to hybrid or web-based mobile applications.
• Experience supporting or generating mobile builds.
• Experience mentoring engineers or acting as a technical lead.
• Understanding of frontend security concepts including Content Security Policy (CSP), authentication, authorization, entitlement management, and secure handling of client data.
• What Success Looks Like
• Ability to quickly contribute within established Angular and ReactJS codebases.
• Strong ownership of features from requirements and development through testing, release, and production support.
• Ability to modernize existing applications without negatively impacting production stability.
• Strong understanding of security and authorization requirements within digital banking applications.
• Consistent delivery of maintainable, high-quality code while balancing speed, reliability, and business needs.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.