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Harnham Linkedin · Posted 29d ago

Lead Fullstack Engineer

New York City, New York, United States

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Indexed description

Lead Fullstack Engineer

Location: New York, NY (Hybrid)

Pay: $200k - $250k Base + Bonus & Equity

Overview

This is a senior‑most individual contributor role within a rapidly scaling, data‑intensive consumer technology organisation operating at global scale. The company builds high‑traffic, customer‑facing platforms used by tens of millions of users and processes hundreds of thousands of real‑time events per second.
The role sits within a newly expanded NYC engineering hub and plays a central role in shaping the company's next‑generation platform architecture. You will operate as a technical leader across frontend and backend systems, driving modernisation, AI adoption, and engineering best practices in a fast‑moving, low‑bureaucracy environment.

Responsibilities

  • Act as a technical lead across fullstack initiatives, setting architectural direction and engineering standards
  • Partner with engineering leadership and product stakeholders to define platform strategy and execution
  • Lead the design and implementation of scalable, server‑rendered applications using modern TypeScript frameworks
  • Drive migration away from legacy systems toward modular, maintainable, and testable architectures
  • Champion the integration of generative AI into software development workflows, including agent‑driven coding and review
  • Evaluate and mitigate risks associated with AI‑assisted development in production systems
  • Contribute to system design documentation, specifications, and long‑term platform roadmap
  • Mentor senior and mid‑level engineers through technical guidance and code reviews

Must‑Have Qualifications

  • 10 - 15 years of professional software engineering experience with significant fullstack ownership
  • Advanced TypeScript expertise across frontend and backend systems
  • Strong experience with server‑side rendering frameworks (e.g. Remix, NestJS, Next‑style architectures)
  • Production experience running systems on Kubernetes
  • Proven technical leadership in complex, high‑scale environments
  • Bachelor's degree in Computer Science or a related technical discipline
  • Demonstrated enthusiasm for AI‑assisted development and modern engineering workflows

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