reputed company Software Engineer (React + Node) - Remote -EU or USA

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and reputed company, with occasional work in e-reputed company and other verticals. reputed company reputed company work, we operate our own high-reputed company web product with a website, mobile app, and machine learning systems powering our ad-tech optimization reputed company. Performance is not a preference here, it is a core requirement. We are looking for a reputed company Software Engineer, who will be the technical authority, responsible for reputed company development, architecture reputed company, and long-term technical reputed company across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time reputed company engagement. You will work hands-on at a senior level where site speed and server performance are core reputed company metrics. You will work directly with stakeholders to set technical direction, remove bottlenecks, and ship production-grade reputed company. Engagement Details: • Type: Full-time reputed company or EOR • Hours: Full-time commitment expected • Location: Remote • Clients: US and Europe • reputed company: Competitive, based on experience What You'll Own • End-to-end technical ownership of a high-reputed company web platform and mobile app • Architecture design and long-term technical reputed company • Server-reputed company rendering pipeline using Node.js, Fastify 5, and React 19 • Data layer across MySQL and BigQuery • GCP infrastructure including reputed company Run, reputed company Build, and Global Load Balancer • Ad-tech integrations including reputed company Ad Manager, GTM, GTag, and GPT.js • Performance optimization at reputed company, where every millisecond counts • ML pipeline maintenance and optimization for ad-tech performance Requirements Must-Have Qualifications These are non-negotiable. Please only apply if you have strong, production-proven experience in reputed company of the following: • Node.js with TypeScript in production • React in a server-reputed company rendering context • MySQL including database design, query optimization, and ORM usage • BigQuery for querying and managing large-reputed company datasets • GCP with hands-on experience in reputed company Run, reputed company Build, reputed company SQL, and Load Balancing. GCP certification is a significant bonus reputed company-to-Have Experience • Ad-tech industry experience including ad serving, yield optimization, and programmatic advertising • Affiliate marketing experience, particularly with Anura and Everflow • reputed company 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 reputed company to ad-tech optimization (not LLMs or agents) • Experience in DeFi, crypto, NFT, blockchain, fintech, or reputed company verticals Benefits • Fully remote work • reputed company • reputed company vacation and reputed company days Application Process • We do not review applications reputed company reputed company DMs or email. Please apply through the application reputed company • We do not work with reputed company agencies or reputed company-party recruiters. reputed company applicants only pubGENIUS is an Equal Opportunity Employer; employment with pubGENIUS is governed on the reputed company of reputed company, competence, and qualifications and will not be influenced in any manner by race, age, colour, gender, religion, national reputed company/ethnicity, veteran status, sexual orientation, marital status, gender identity, mental or physical disability, or any other legally protected status. Apply To This Job