Principal Software Engineer (Ad-tech)

TL;DR

Principal Software Engineer (Ad-tech): End-to-end technical ownership of high-revenue web platform, mobile app, and ML-powered ad-tech optimization systems with an accent on architecture design, performance optimization, and scalable infrastructure. Focus on building server-side rendering pipelines, optimizing data layers, and integrating ad-tech services for high-load environments.

Location: Remote (US, Canada, UK, Ireland or Netherlands)

Company

React.js and Next.js development agency and ad-tech startup building websites and apps for DeFi, crypto, fintech, healthcare clients, and operating own web product with ML ad-tech engine.

What you will do

• Own end-to-end technical direction for web platform and mobile app including architecture and long-term strategy
• Design and maintain server-side rendering pipeline using Node.js, Fastify 5, and React 19
• Manage data layer with MySQL and BigQuery including design, optimization, and large-scale querying
• Handle GCP infrastructure with Cloud Run, Cloud Build, Global Load Balancer, and related services
• Integrate ad-tech tools like Google Ad Manager, GTM, GTag, and GPT.js
• Optimize performance at scale and maintain ML pipeline for ad-tech

Requirements

• Node.js with TypeScript in production
• React in server-side rendering context
• MySQL including database design, query optimization, ORM
• BigQuery for large-scale datasets
• GCP hands-on with Cloud Run, Cloud Build, Cloud SQL, Load Balancing

Nice to have

• Ad-tech experience with ad serving, yield optimization, programmatic advertising
• Affiliate marketing with Anura, Everflow
• Cloudflare CDN, caching, Workers
• Fastify 5 patterns
• Flutter for mobile
• Golang or Rust for performance services
• ML applied to ad-tech
• DeFi, crypto, NFT, blockchain, fintech, healthcare experience

Culture & Benefits

• Fully remote work
• Flexible hours
• Paid vacation and sick days