Senior Frontend Engineer

Senior Frontend Engineer 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. Build reusable and maintainable frontend components using Angular, TypeScript, JavaScript, HTML5, and CSS3. 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. Advanced knowledge of TypeScript and JavaScript. 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. ReactJS development experience. 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. Apex Systems