Senior Full-Stack Engineer - AI Sales Transform...
@ Underdog.io -Apply to top tech jobs in 60 seconds. A place where companies apply to you

Hybrid
$207,500
Hybrid
Full Time
Posted 22 days ago

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Job Details

About Underdog.io

Underdog.io is a modern recruiting platform where companies apply to you. One of our hiring partners is redefining enterprise outbound sales through cutting-edge AI and LLM-powered agent technology, trusted by innovators like 1Password, Fivetran, and Greenhouse.

Mission

As a Senior Full-Stack Engineer - AI Sales Transformation, you will pioneer the future of sales technology by architecting and scaling AI-native products, automating complex sales workflows, collaborating with customers on roadmap decisions, and leading technical innovation in a product-led environment.

What You’ll Own

  • Build end-to-end features using React, TypeScript, Node.js, and Python.
  • Define architecture, quality standards, and development processes.
  • Mentor junior engineers through code reviews and best practices.
  • Design systems leveraging LLMs for sales task automation and analytics.
  • Optimize performance for 100M+ interactions ensuring reliability and speed.

Your Expertise

  • 6+ years building production-grade full-stack applications.
  • 1+ year in a technical leadership role.
  • Proven success in startups or high-growth tech environments.
  • Mastery of distributed systems, API design, and database optimization.
  • Strong communication in collaborative, product-driven teams.

Our Tech Stack

  • Frontend: React, TypeScript, Vercel
  • Backend: Node.js, Python, GraphQL/REST
  • Infra: AWS, Kubernetes, PostgreSQL
  • AI Tooling: LLM orchestration, agent frameworks, real-time analytics

Compensation & Benefits

  • Base Salary: $175,000 – $240,000
  • Meaningful equity ownership
  • 100% covered medical, dental, vision
  • Unlimited PTO and hybrid work model
  • Annual learning stipend and leadership training
  • Premium hardware and ergonomic workspace support

Our Culture

We build category-defining products with velocity and rigor, keeping customer success as our north star, and working together as one team.

Key skills/competency

Product Engineering, Full-Stack, React, TypeScript, Node.js, Python, Distributed Systems, API Design, Mentorship, AI Integration

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How to Get Hired at Underdog.io -Apply to top tech jobs in 60 seconds. A place where companies apply to you

🎯 Tips for Getting Hired

  • Research Underdog.io: Understand their platform, values, and culture.
  • Customize your resume: Highlight full-stack and leadership skills.
  • Showcase AI expertise: Provide examples of AI integrations.
  • Prepare for interviews: Review technical and architectural questions.

📝 Interview Preparation Advice

Technical Preparation

Review React and TypeScript fundamentals.
Practice Node.js and Python coding challenges.
Study distributed systems and API design.
Explore cloud setups with AWS and Kubernetes.

Behavioral Questions

Describe a challenging project leadership experience.
Explain a time you mentored a colleague.
Detail collaboration in a high-growth environment.
Discuss handling rapid iteration and ambiguity.

Frequently Asked Questions