Principal Software Engineer

Pubgenius Inc.

Principal Software Engineer leading technical direction at a React.js and Next.js agency. Handling development and architecture for web products and ML-powered optimizations.

Posted 4/16/2026contractRemote • 🇺🇸 United StatesLeadWebsite

Tech Stack

Tools & technologies

BigQueryCloudFlutterGoGoogle Cloud PlatformJavaScriptMySQLNode.jsReactRustSQLTypeScript

About the role

Key responsibilities & impact

End-to-end technical ownership of a high-revenue web platform and mobile app
Architecture design and long-term technical strategy
Server-side rendering pipeline using Node.js, Fastify 5, and React 19
Data layer across MySQL and BigQuery
GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer
Ad-tech integrations including Google Ad Manager, GTM, GTag, and GPT.js
Performance optimization at scale, where every millisecond counts
ML pipeline maintenance and optimization for ad-tech performance

Requirements

What you’ll need

Node.js with TypeScript in production
React in a server-side rendering context
MySQL including database design, query optimization, and ORM usage
BigQuery for querying and managing large-scale datasets
GCP with hands-on experience in Cloud Run, Cloud Build, Cloud SQL, and Load Balancing. GCP certification is a significant bonus.
Ad-tech industry experience including ad serving, yield optimization, and programmatic advertising
Affiliate marketing experience, particularly with Anura and Everflow
Cloudflare including CDN configuration, caching strategies, and Workers
Fastify, especially Fastify 5 patterns
Flutter for mobile app contribution
Golang or Rust for high-performance service work
Machine learning applied to ad-tech optimization (not LLMs or agents)
Experience in DeFi, crypto, NFT, blockchain, fintech, or healthcare verticals

Benefits

Comp & perks

Fully remote work
Flexible hours
Paid vacation and sick days

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Node.jsTypeScriptReactMySQLBigQueryGCPFastifyFlutterGolangRust

Certifications

GCP certification