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Replify

Senior Software Engineer

Reposted 19 Days Ago
In-Office or Remote
2 Locations
Senior level
In-Office or Remote
2 Locations
Senior level
Architect, build, and maintain scalable full‑stack applications using React, TypeScript, Node.js, and AWS. Own features end-to-end, optimize performance and usability, collaborate with founders, and use AI tools to accelerate development in a fast-paced startup.
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About heyLibby

heyLibby is a seed-stage startup building the world’s best AI assistant for small to medium businesses focusing on the fitness and wellness industries. We were co-founded by Spencer Rascoff, the former CEO of Zillow and current CEO of Match Group. Our AI works seamlessly across phone, email, text, and chat to help businesses manage their communications efficiently. We move fast, prioritize impact, and work closely with top industry experts. Our culture values transparency, hard work, and making an impact.

About the Role

We are looking for a highly skilled and experienced Senior Software Engineer with the ability to architect, design, and build and with deep expertise in React, TypeScript, Node.js, and AWS. You will be a critical part of our small, high-impact team, architecting and building scalable systems while making quick and pragmatic architectural decisions. We value engineers who can think creatively, ship fast, and build practical solutions that drive real business value. We also use AI throughout all our daily tasks and are looking for engineers that can use the latest AI technologies to accelerate their development.

Responsibilities

  • Architect, develop, and maintain scalable, high-quality full-stack applications.

  • Design and implement frontend experiences using React and TypeScript. You will be our React/frontend expert to fill in and round out the team’s skills!

  • Build and optimize backend services using Node.js on AWS.

  • Collaborate closely with founders and the team to shape technical decisions and product direction.

  • Own features end-to-end, from idea to deployment.

  • Optimize performance and usability while maintaining high-quality code.

  • Work quickly and adapt to a fast-changing environment while maintaining a pragmatic approach to problem-solving.

  • Help to select design patterns, and architect solutions top to bottom.

Qualifications

Must-Haves:

  • 5+ years of professional experience in full-stack development.

  • Strong expertise in React, TypeScript, and Node.js.

  • Ability to use the latest AI technologies for development, testing, and other tasks

  • Deep understanding of AWS and cloud-based architectures.

  • Ability to independently design and architect systems.

  • Strong problem-solving skills and ability to move fast in a startup environment.

  • Excellent communication skills and ability to work collaboratively in a small team.

  • A ‘get-it-done’ attitude and a bias toward execution over perfection.

Nice-to-Haves:

  • Experience with AWS Amplify.

  • Experience working at an early-stage startup.

  • Familiarity with automated testing tools and CI/CD pipelines.

  • Experience with Identity and Access Management solutions.

  • Experience with Authentication and Authorization frameworks (OIDC, OAuth, etc.)

Why Join Us?

  • Fast-moving environment: We believe in moving fast and iterating quickly.

  • Work with top experts: Get the opportunity to collaborate with leading industry professionals.

  • Real impact: Your work will directly shape the future of AI-powered business tools.

  • Work-life balance: We work very hard but also respect the need to take care of life and family.

  • Equity and ownership: Be part of a small, high-impact team where your contributions are valued.

If you are an experienced software engineer looking to work in a high-energy, fast-paced, and fun startup, we’d love to hear from you. Apply now and help us shape the future of AI-powered business communication!

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