Principal Software Engineer (AdTech)

TL;DR

Principal Software Engineer (AdTech): Leading technical strategy and architecture for a high-revenue web platform and mobile app with an accent on server-side performance and ad-tech optimization. Focus on designing scalable systems using Node.js, React, and GCP to ensure reliability and speed under heavy traffic.

Location: Must be based in the US, Canada, UK, Ireland, or the Netherlands

Company

hirify.global is an ad-tech startup and development agency building high-performance web products and applications for clients in fintech, healthcare, and decentralized finance.

What you will do

• Own the end-to-end technical architecture for a high-revenue web platform and mobile app.
• Design and maintain server-side rendering pipelines using Node.js, Fastify 5, and React 19.
• Manage data layers across MySQL and BigQuery to support large-scale datasets.
• Oversee GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer.
• Optimize ML pipelines for ad-tech performance and ensure millisecond-level site speed.
• Collaborate with stakeholders to define long-term technical strategy and remove bottlenecks.

Requirements

• Must be based in the US, Canada, UK, Ireland, or the Netherlands.
• Proven production experience with Node.js and TypeScript.
• Strong expertise in React within a server-side rendering context.
• Deep knowledge of MySQL database design, query optimization, and ORM usage.
• Hands-on experience with BigQuery for large-scale data management.
• Extensive experience with GCP services including Cloud Run, Cloud Build, and Load Balancing.

Nice to have

• Ad-tech industry experience including yield optimization and programmatic advertising.
• Experience with Cloudflare CDN and caching strategies.
• Proficiency in Golang or Rust for high-performance services.
• Knowledge of machine learning applied to ad-tech optimization.
• Experience with Flutter for mobile development.

Culture & Benefits

• Fully remote work environment with flexible hours.
• Paid vacation and sick days.
• Opportunity to work on high-revenue products with significant technical impact.