Lead Software Engineer II - Frontend

Best Egg is a market-leading, tech-enabled financial platform helping people build financial confidence through a variety of installment lending solutions and financial health tools. The Lead Software Engineer II plays an important role in building and enhancing engineering solutions across the organization, focusing on designing and delivering reliable, high-quality frontend software while collaborating with various teams to deliver user-focused features.

Responsibilities:

• Design, develop, and deliver high-quality software iteratively and incrementally
• Take ownership of key components and features—from hands-on coding to deployment and monitoring
• Contribute to frontend observability using tools like Datadog and Fullstory for error tracking, performance monitoring, and user session analysis
• Participate in technical design discussions and contribute architectural insights, working with senior leaders to shape solutions
• Ensure software follows modern engineering practices, including clean code, testing, automation, and modern frontend architecture patterns
• Support continuous improvement in code quality, reliability, performance, and developer experience
• Translate business requirements into clear technical tasks and help validate assumptions and approaches
• Mentor and support junior engineers through pairing, code reviews, and knowledge sharing
• Collaborate effectively with Engineering, Product, and Design/UX to deliver well-aligned solutions
• Contribute to a culture of learning, curiosity, and continuous improvement within the engineering team
• Own core components or features
• Deliver high-quality, production-ready code and contribute meaningfully to team goals
• Build strong working relationships within Engineering, Product, and Design/UX
• Lead development of one or more components or features with increasing autonomy
• Help improve application performance, reliability, and user experience
• Support and elevate engineering practices through mentorship, code reviews, and process improvements

Requirements:

• 5–7 years of professional frontend software engineering experience
• Expertise with Angular (preferred), React, or Vue at scale
• Strong proficiency in JavaScript and TypeScript, including experience with advanced typing and generics
• Strong understanding of reactive programming patterns and state management, with experience in libraries such as RxJS, NgRx, Vuex/Pinia, or Redux
• Strong proficiency in CSS/SCSS, HTML, responsive design, cross-browser compatibility, and mobile-first development
• Experience integrating RESTful APIs, third-party SDKs, and embedded widgets within single-page applications, including complex asynchronous workflows
• Experience designing and contributing to reusable component libraries and shared internal packages (NPM preferred)
• Experience with unit testing (Vitest, Jest, Jasmine, or similar)
• Experience working within mature, legacy codebases and contributing to incremental modernization efforts
• Familiarity with accessibility standards and best practices