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Lead Full Stack Developer

Lead Full Stack Developer

ReplyDetroit, Michigan, United States
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Concept Reply, part of the Reply Network, is a leader in IoT solutions. We support and advise our customers in Automotive, Manufacturing, Smart Infrastructure and beyond in all aspects of Internet of Things (IoT) and Cloud Computing. From designing and developing customized IoT solutions to implementing and managing them seamlessly, Concept Reply helps customers unlock the potential of IoT.

As a Lead Full Stack Developer, you will architect and build a sophisticated platform combining interactive 3D experiences and scalable enterprise services. You will lead a cross-functional team and own the delivery of robust applications using modern DevOps pipelines. Your expertise in React, Three.js , and .NET or Java will be critical in creating seamless user and backend experiences.

Responsibilities

  • Lead the development of immersive and responsive frontends using React, TypeScript, and Three.js
  • Build scalable backend services using .NET (C#) or Java, following clean architecture principles
  • Design and expose RESTful or GraphQL APIs for frontend and external integration
  • Establish and maintain CI / CD pipelines using GitHub Actions
  • Monitor and ensure performance, availability, and observability across the stack
  • Conduct code reviews and mentor team members in architecture and best practices
  • Align technical delivery with business goals and manage risks across the project lifecycle
  • Collaborate with designers, product managers, and stakeholders for seamless delivery

Minimum Requirements

  • Bachelor’s degree in Computer Science, Engineering, or related field or equivalent experience
  • 7 years of full-stack development experience, including 3+ years in a technical leadership role
  • Proven expertise in React, TypeScript, and Three.js for frontend development
  • Experience with backend development in .NET (C#) or Java (Spring Boot preferred)
  • Strong understanding of REST and / or GraphQL API design
  • Hands-on experience with CI / CD tools such as GitHub Actions
  • Familiarity with cloud platforms like Azure, AWS, or GCP and containerization using Docker
  • up to 15% travel

    • Preferred Qualifications

  • Experience working with 3D file formats such as glTF, FBX, or OBJ
  • Familiarity with OAuth2, OpenID Connect, and enterprise security practices
  • Experience in a manufacturing environment

    • About Reply

    Reply specializes in the design and implementation of solutions based on new communication channels and digital media. Reply is a network of highly specialized companies supporting global industrial groups operating in the telecom and media, industry and services, banking, insurance and public administration sectors in the definition and development of business models enabled for the new paradigms of AI, cloud computing, digital media and the Internet of Things. Reply services include Consulting, System Integration and Digital Services.

    Reply is an equal opportunity employer. We are committed to provide equal opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. If you need assistance and reasonable accommodation due to a disability during the application or the recruiting process, email us at jobusa@reply.com. Visit our website at www.reply.com to learn more about our open roles.

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    Lead Stack Developer • Detroit, Michigan, United States