Talent.com
Senior/Staff React Frontend Engineer
Senior/Staff React Frontend EngineerNuclearn • Phoenix, Arizona, United States
Senior / Staff React Frontend Engineer

Senior / Staff React Frontend Engineer

Nuclearn • Phoenix, Arizona, United States
[job_card.30_days_ago]
[job_preview.job_type]
  • [job_card.full_time]
  • [job_card.permanent]
[job_card.job_description]

Senior / Staff React Frontend Engineer

Why Nuclearn.ai

Nuclearn.ai builds AI-powered software for the nuclear and utility industries—tools that keep critical infrastructure reliable, efficient, and safe. Our software integrates AI-driven workflow, documentation, and research automation, and is already used at 60+ nuclear reactors across North America. You'll ship production code operators and engineers rely on every day.

We're growing quickly, expanding our team and our Phoenix HQ. The work is consequential : what you build helps real plants run safer and smarter.

Eligibility : U.S. citizenship or permanent residency (green card) is required due to DOE export compliance.

What You'll Do

  • Architect scalable frontend systems that handle complex data workflows and real-time updates
  • Build sophisticated data visualizations that make ML model outputs interpretable and actionable
  • Design and implement component libraries that balance flexibility with consistency
  • Optimize performance for data-heavy applications while maintaining excellent UX
  • Collaborate deeply with backend engineers, data scientists, and domain experts to translate complex requirements into elegant interfaces
  • Establish frontend standards and drive technical decisions across the engineering team
  • Mentor engineers and elevate the entire team's frontend capabilities
  • Ship features end-to-end from concept to production, owning the quality and user experience

Examples of problems you might own in your first 90 days

  • Building real-time monitoring interfaces used in mission-critical nuclear operations
  • Designing complex, high-dimensional ML visualization components that make automated insights actionable
  • Establishing a robust frontend architecture and shared component system that scales with the engineering team

    • What Makes You a Great Fit

    Technical Excellence

  • 7+ years building production web applications with deep expertise in React and modern JavaScript / TypeScript
  • Mastery of state management patterns (Redux, Zustand, React Query, Context, etc.)
  • Strong computer science fundamentals, including performance optimization and debugging complex systems
  • Experience architecting large-scale applications designed for long-term maintainability
  • Proficiency with modern tooling (Vite / Webpack, testing frameworks, CI / CD)

    • Product Mindset

  • You think beyond implementation—asking why and should we as often as how
  • Experience collaborating with designers, or designing interfaces yourself when needed
  • Track record of creating intuitive, delightful user experiences
  • Comfortable making pragmatic tradeoffs in ambiguous and fast-changing environments

    • Communication & Leadership

  • Ability to explain complex technical decisions to non-technical stakeholder
  • Experience mentoring engineers and performing thoughtful code reviews
  • Skilled at driving consensus and influencing technical direction
  • Thrive in a collaborative, fast-paced startup environment

    • Self-Directed Impact

  • Able to contribute independently within 6 weeks
  • High degree of ownership and ability to drive problems end-to-end
  • Proactively identifies improvements and executes on them

    • Nice To Have (not Required)

  • Experience with data visualization libraries (D3.js, Recharts, Plotly, etc.)
  • Background in complex domains (scientific, industrial, financial, healthcare)
  • Contributions to open source or technical writing
  • Experience with WebGL, Canvas, or high-performance graphics
  • Knowledge of accessibility (WCAG) and building inclusive interfaces
  • Full-stack capabilities or strong understanding of backend systems
  • Prior startup experience or leading engineering initiatives

    • Impact You'll Have (near-term roadmap)

  • Improve the reliability and usability of interfaces used daily at nuclear power plants
  • Shape the foundation of our shared component library & frontend patterns
  • Lead development of new visualization systems for ML-driven analysis and operator workflows

    • Work Model & Schedule

  • Full-time, salaried
  • Mon–Fri hybrid (Wed remote); expectation is ≥80% in-office (Phoenix HQ)

    • How We Hire (fast, respectful, practical)

  • 20-min intro with the founder / hiring manager to trade context and assess mutual fit
  • Practical work sample (60–90 min; a real task in our stack)
  • Team meet + peer programming (system design + collaboration)

    • We aim to move from first chat to decision quickly.

    [job_alerts.create_a_job]

    Engineer • Phoenix, Arizona, United States

    [internal_linking.similar_jobs]
    Senior Front End Developer

    Senior Front End Developer

    TWO95 International • Scottsdale, AZ, United States
    [job_card.full_time]
    Title : Senior Front End Developer.Front End Developer serves as a lead technical resource on the Digital Solutions team (Web & Mobile) and participates in all phases of the development life cycle.F...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Senior Front End Developer

    Senior Front End Developer

    Two95 International Inc. • Scottsdale, AZ, US
    [job_card.full_time]
    [filters_job_card.quick_apply]
    Title : Senior Front End Developer.Front End Developer serves as a lead technical resource on the Digital Solutions team (Web & Mobile) and participates in all phases of the development life cyc...[show_more]
    [last_updated.last_updated_30]
    Senior Staff Engineer

    Senior Staff Engineer

    Motion Recruitment • Phoenix, AZ, United States
    [job_card.full_time]
    A leading global financial services organization is expanding its Commercial Services technology group in Phoenix, AZ.This full-time, direct-hire position is based on their Desert Ridge campus (3 d...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Software Engineer, Frontend - Developer Experience

    Software Engineer, Frontend - Developer Experience

    Coinbase • Phoenix, AZ, United States
    [job_card.full_time]
    Ready to be pushed beyond what you think you’re capable of?.At Coinbase, our mission is to increase economic freedom in the world. It’s a massive, ambitious opportunity that demands the best of us, ...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Senior Software Engineer (AEM Full Stack)

    Senior Software Engineer (AEM Full Stack)

    Ford Motor Company • Phoenix, AZ, United States
    [job_card.full_time]
    Consider joining Ford as a Senior Software Engineer (AEM Full Stack) on our team with responsibilities including defining a path to a robust, scalable platform that harnesses the power of diverse d...[show_more]
    [last_updated.last_updated_1_day] • [promoted]
    React Developer

    React Developer

    Encora • Scottsdale, AZ, United States
    [job_card.full_time]
    Collaborate with and across Agile teams to design, develop, test, implement, and support technical solutions in full-stack development tools and technologies. Shows a commitment to quality by implem...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Senior Front-end Developer (React.js, HTML, CSS)

    Senior Front-end Developer (React.js, HTML, CSS)

    St. George Tanaq Corporation • Phoenix, AZ, United States
    [job_card.full_time]
    Senior Front-end Developer (React.Tanaq Technical Services (TTS), a division of St.George Tanaq (SGT)Corporation, is an 8(a) Alaskan Native Small Business that specializes in delivering Enterprise ...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Senior Software Engineer - AZ

    Senior Software Engineer - AZ

    Prismhr • Chandler, Arizona, United States
    [job_card.full_time]
    As a Senior Software Engineer, you will be.Our teams use a diverse set of tools and languages, including C#, Go, Ruby, Kafka, Docker,. We work with React and SPA’s in the front-end, and are investin...[show_more]
    [last_updated.last_updated_30] • [promoted]
    Senior Software Engineer

    Senior Software Engineer

    Valore Partners • Tempe, Arizona, United States
    [job_card.full_time]
    A world-class Software Engineering firm, delivering bulletproof software transformation since 2005!.Seeking a Senior Software Engineer to join our team. you will help build and drive solutions in a...[show_more]
    [last_updated.last_updated_30] • [promoted]
    Senior Front-End Engineer

    Senior Front-End Engineer

    VirtualVocations • Chandler, Arizona, United States
    [job_card.full_time]
    A company is looking for a Front-End Software Engineer IV (React / Typescript).Key Responsibilities Develop React / Typescript web applications Design and implement UX workflows for clinical study m...[show_more]
    [last_updated.last_updated_30] • [promoted]
    Senior Software Engineer

    Senior Software Engineer

    Relativity • Phoenix, AZ, United States
    [job_card.full_time]
    The Senior Software Engineer - aiR for Review designs, builds, and operates the next generation of generative AI-driven, cloud-native web applications that are transforming our business and industr...[show_more]
    [last_updated.last_updated_30] • [promoted]
    Senior Fullstack Engineer

    Senior Fullstack Engineer

    PrePass • Phoenix, AZ, US
    [filters.remote]
    [job_card.full_time]
    [filters_job_card.quick_apply]
    PrePass® is North America's most trusted weigh station bypass and toll management platform.We’re transforming how the transportation industry operates—creating solutions that keep trucks moving saf...[show_more]
    [last_updated.last_updated_30]
    Mid-Level Angular Role

    Mid-Level Angular Role

    Yrefy LLC • Phoenix, AZ, United States
    [job_card.full_time]
    Join a small, focused engineering team building the visual backbone of a modern financial platform.As our Angular / UI Engineer, you'll create reusable components, define UI standards, and craft da...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Sr. React Developer

    Sr. React Developer

    Arizona Staffing • Phoenix, AZ, US
    [job_card.full_time]
    The intelligent transformation partner.The global technology and services leader that powers the world's best brands, today and into the future. We're solution-focused, tech-powered, intelligence-fu...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Sr React Native Developer

    Sr React Native Developer

    DMSi Software • Phoenix, AZ, United States
    [job_card.full_time]
    You'll collaborate with cross-functional teams to create cutting-edge solutions that empower businesses and enhance user engagement. If you're passionate about customer-centric development and drive...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    React Developer

    React Developer

    InterSources • Chandler, AZ, United States
    [job_card.full_time]
    Location : Chandler, AZ; Charlotte, NC; Dallas, TX; Irving, TX.Must Have : React / Node JS, HTML, JavaScript, JQuery and CSS, Mocha and Jest. Proficiency in React JS, Node JS, HTML, JavaScript, jQuery, ...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Principal Full Stack Software Engineer

    Principal Full Stack Software Engineer

    Oracle • Phoenix, AZ, United States
    [job_card.full_time]
    As a Principal Software engineer in our team, you'll be responsible and lead efforts in designing and building scalable, distributed, and resilient software components and infrastructure to support...[show_more]
    [last_updated.last_updated_variable_days] • [promoted]
    Full Stack Engineer (Staff or Principal level) - remote / hybrid

    Full Stack Engineer (Staff or Principal level) - remote / hybrid

    BuildWitt • Phoenix, AZ, US
    [filters.remote]
    [job_card.full_time]
    [filters_job_card.quick_apply]
    Our Mission The Dirt World (food, water, shelter, power, and transportation) is the foundation of humanity.And hardworking people are the foundation of the Dirt World.But these folks—who have...[show_more]
    [last_updated.last_updated_30]