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firstPRO, Inc

Senior User Interface Developer (Angular/React/Next.js) (Boston)

firstPRO, Inc, Boston, Massachusetts, United States, 02298

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Role:

Senior User Interface Developer (Angular/React/Next.js) Location:

4 Days onsite in Boston, MA (Must currently reside in Massachusetts) MUST HAVE: 10+ years of experience Angular/React/Next.JS Ability to mentor/lead a team

Role Overview This role is responsible for designing and delivering modern, high-performance user interfaces within a complex, production-grade web platform. The position blends hands-on development with architectural ownership and technical leadership across frontend and full-stack initiatives. Key Responsibilities Design, build, and evolve scalable web applications using modern JavaScript frameworks, including Angular- and React-based ecosystems, with experience delivering applications using server-side and static rendering approaches. Implement and maintain server-side services and APIs to support frontend functionality and data access within a full-stack environment. Provide technical direction on UI architecture, component strategy, styling approaches, and build tooling to ensure maintainability and performance. Establish and improve automated build, test, and deployment workflows, supporting reliable releases to cloud-based environments. Serve as a technical mentor, guiding engineers on state management, accessibility standards, performance optimization, and testing strategies. Partner with product management, UX/design, and backend engineering to translate requirements into intuitive, user-centered experiences. Assess emerging tools and frameworks and recommend improvements aligned with long-term platform goals. Required Experience Strong hands-on experience building production applications with modern frontend frameworks and supporting server-side technologies. Advanced proficiency in JavaScript and TypeScript, with a solid foundation in web standards, responsive design, and modern CSS practices. Experience integrating frontend applications with REST-based and/or query-driven APIs. Exposure to cloud-based deployment models and automated delivery pipelines across major cloud platforms. Demonstrated ability to lead frontend or full-stack initiatives and support the growth of other engineers.