We are looking for a Senior Fullstack Engineer with a strong backend orientation (80%) to join the development of our scalable, AI-powered product systems.What You'll Do:Join a role that combines deep backend expertise with solid frontend fluency and product thinking, along with the ability to leverage AI tools effectively across the development lifecycle. You will work closely with product, design, frontend, and data/AI teams to build reliable, performant systems and intuitive user experiences, while driving engineering excellence and modern development practices. Your contributions will shape the technical foundation of an AI-first product and directly influence the experience of end users.What does the day to day of a Senior Fullstack Engineer look like:Your daily work will span backend architecture, frontend collaboration, and AI-augmented development, engaging directly with the systems that power our product.Your role will include:Design and build scalable, maintainable backend services using NestJS (Node.js/TypeScript) and/or PythonOwn API design, contracts, and versioning across servicesDesign and optimize data models, database schemas, and query performanceImplement authentication, authorization, and secure API integration patternsBuild reliable data-fetching layers, caching strategies, and async processing (queues, jobs, events)Lead backend technical decisions, code quality standards, and system architectureEnsure system scalability, fault tolerance, and observability (logging, monitoring, alerting)Contribute to CI/CD pipelines and deployment practices for backend servicesCollaborate on frontend applications built with React, TypeScript, and Vite, and contribute to API contracts from the consumer's perspectivePartner with frontend engineers to align on data shapes, performance, and UX constraintsTranslate product requirements into robust, scalable technical solutions, working closely with product and designConduct high-quality code reviews and drive architectural discussions and best practicesImprove testing, observability, CI/CD, and system reliability across the teamUse AI coding tools effectively in daily development work (Cursor, Copilot, Claude, ChatGPT, etc.), critically evaluating and refining AI-generated code, especially for backend logic and data integrityDesign efficient personal/team workflows for AI-assisted development and contribute to engineering productivity through AI tooling and automationRequirements: 5+ years of Full stack or Backend engineering experience, with a strong backend focus(80%)- MustStrong proficiency in Node.js, TypeScript, and NestJS; Python proficiency also welcome (or equivalent backend framework)- MustSolid working proficiency in React and modern frontend fundamentals (HTML, CSS)Experience designing scalable backend architectures and data modelsDeep understanding of API design, authentication flows, and distributed system tradeoffsExperience with relational and/or NoSQL databases, including query optimizationStrong understanding of system performance, reliability, and security best practicesExperience with testing methodologies (unit, integration, E2E) and observability toolingHands-on experience using AI development tools in daily workflows, with the ability to validate, debug, and improve AI-generated codeUnderstanding of prompt engineering for engineering workflows and the ability to work effectively in fast iteration environmentsStrong product and technical intuition, with excellent communication and collaboration skillsNice to have: experience with data platforms, analytics products, or BI tools; large-scale data processing or query optimization; streaming/real-time data patterns; or integrating with LLM APIs.This position is open to all candidates.
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