Coperniq is hiring a Site Builder Company (YC S13) - Sr Fullstack Developer

We're constructing the premier AI-driven Digital Experience Platform, operating as a remote-centric organization rooted in trust, transparency, and unbridled creativity. This endeavor demands resilience, as we progress rapidly without compromising craftsmanship or quality. Our objective is to democratize development capabilities for all. From startup visionaries launching initial concepts to multinational corporations expanding digital footprints, we empower teams to design, implement, and optimize web experiences without constraints. We envision a future where the web and work become more accessible, innovative, and equitable. We're committed to collective progress. We're expanding our engineering presence in Argentina, establishing teams across critical product domains, including: Cloud: In this role, you'll develop a product enabling customers to deploy fully functional web applications on their hosted domains. You'll integrate features within our Designer Dashboard and supporting infrastructure. e-Commerce: You'll collaborate closely with Product, Design, Engineering, and Data Engineering teams to advance our next-generation e-commerce platform, navigating a comprehensive ecosystem of tools and creating exceptional customer experiences. Team placement will be determined following the interview process. About the role: Location: Remote-first (Argentina) Permanent As a Senior Software Engineer, Fullstack, you'll: Design and implement scalable multi-tenant backend services and APIs. Leverage technologies like Node.js, Javascript/Typescript, MongoDB, GraphQL, Apollo, Amazon Web Services EC2, S3, Lambdas, Kafka, and more. Demonstrate expertise across multiple technical domains. Contribute to functional strategy development and execution. Lead projects driving team and organizational deliverables. Generate maintainable, tested, high-performance, scalable code. Author and evaluate design documentation. Influence technical designs and team prioritization. Collaborate autonomously with product managers and designers. Mentor junior engineers in technical skills and organizational culture. Engage in engineering citizenship activities. We'll support your professional development by aligning your interests with role opportunities. About you: Requirements: Business-level English proficiency 5+ years developing and deploying web applications Expertise in Node.js and TypeScript Capability to create scalable services using Express.js, GraphQL, Apollo, MongoDB Ability to diagnose production issues across service layers Proven experience constructing complex web systems Familiarity with testing frameworks Comfort with agile, experimental environments Commitment to continuous learning and technological exploration