Software Engineer, Backend (Platform)

Skip to main content📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"📊 AI analytics use case: how Mercor unlocked $100M in revenue🤯  Generative data apps: Gorgeous, interactive dashboards and apps you can build with just a prompt📖 State of Data Teams 2026 discover key insights from data leaders 🙏 It's just "Hex"! Not "HEX" or "Hex dot tech"Open RoleSoftware Engineer, Backend (Platform)NYC or Remote (US)About the roleWe are looking for a Senior or Staff-level software engineer to join our Backend Platform team.Our team is responsible for building and maintaining Hex's core compute platform, which serves as the fundamental engine for all code execution, SQL querying, and data processing across the Hex application. Our platform powers everything from the core notebook interface and published applications to the complex data capabilities required by our AI agents.Our mission is twofold: to make the compute platform exceptionally easy to use, develop on, and monitor, while also ensuring it is blazingly fast and performant. Engineers on this team operate at the challenging and rewarding intersection of systems architecture, API design, and deep performance optimization.What you will doOn the Backend Platform team you’ll work on projects with high technical complexity and spanning across the stack, from our backend data systems to the frontend of Hex’s collaborative notebook interface.Here are some examples of the kinds of projects you might tackle:Using DuckDB to enable seamless data interoperability between Python and SQL code written by our users or AI agentsBuilding intelligent caching systems to speed up customer data queriesImplementing a graph-based dependency framework for optimizing multi-step execution plansInstrumenting complex, multi-language systems to identify performance bottlenecksBuilding visualizations into the product to help users understand the performance characteristics of their codeAbout you6+ years of engineering experience working on complex, data-driven systems or applicationsExpert-level understanding of Python, SQL, jupyter kernels, and/or data warehousing systemsDeeply informed on industry trends around data processing, databases, and performant data architecturesYou love diving into highly complex codebases and have a passion for designing elegant abstractions that improve correctness and developer productivityAn inexhaustible desire to understand where every millisecond of time could be goingAn instinct for strategic thinking and aligning with business and product goals while keeping a healthy balance of velocity and engineering excellence.Experience working in a remote-first team and...