Senior Software Engineer

About AlphaSense: The world’s most sophisticated companies rely on AlphaSense to remove uncertainty from decision-making. With market intelligence and search built on proven AI, AlphaSense delivers insights that matter from content you can trust. Our universe of public and private content includes equity research, company filings, event transcripts, expert calls, news, trade journals, and clients’ own research content. The acquisition of Tegus by AlphaSense in 2024 advances our shared mission to empower professionals to make smarter decisions through AI-driven market intelligence. Together, AlphaSense and Tegus will accelerate growth, innovation, and content expansion, with complementary product and content capabilities that enable users to unearth even more comprehensive insights from thousands of content sets. Our platform is trusted by over 6,000 enterprise customers, including a majority of the S&P 500. Founded in 2011, AlphaSense is headquartered in New York City with more than 2,000 employees across the globe and offices in the U.S., U.K., Finland, India, Singapore, Canada, and Ireland. Come join us! About the Role AlphaSense is seeking an exceptional engineer to own our Excel plugin strategy, bringing the power of AI-driven market intelligence directly into the workflow of financial professionals worldwide. You'll build the bridge between our cutting-edge AI platform and the tool that millions of analysts, investors, and researchers use every day – Microsoft Excel. This is a unique opportunity to work at the intersection of enterprise desktop development, financial technology, and AI. You'll create experiences that feel magical to users – imagine Excel formulas that can query 1.6 billion documents, or financial models that update with real-time market intelligence. Your work will directly impact how the world's leading financial institutions make critical decisions. Who You Are: 5+ years building production software, with significant experience in desktop applications or Office add-ins Deep expertise in C#, .NET and modern development practices Strong understanding of asynchronous programming, state management, and event-driven architectures Experience with enterprise software deployment, updates, and version management Track record of building performant applications with excellent error handling and recovery Excellence in debugging complex integration issues and memory/performance optimization Strong testing philosophy adapted to desktop environments Ability to mentor teams and establish development best practices Preferred: Production experience with C#, VSTO, or COM add-ins Knowledge of Excel's calculation engine, object model, and common power-user patterns Knowledge of AWS Understanding of financial modeling, data analysis workflows, or trading systems Experience with web development technologies Familiarity with financial data formats (XLSX, CSV, JSON) and transformations Background in building offline-capable applications with sync mechanisms Experience with WebSocket, real-time data feeds, or streaming architectures Technical Environment Visual Studio & Visual Studio Tools for Office (VSTO) REST APIs and WebSocket connections to AlphaSense platform Complex state management between local and cloud data Enterprise authentication (SSO, OAuth, SAML) Cross-platform support (Windows and Mac) AWS What You'll Do Architect the Excel Experience : Design and build a production-grade Excel plugin that seamlessly integrates AlphaSense's AI capabilities while respecting Excel's performance and stability requirements Master Complex Integration : Navigate Excel's object model, calculation engine, and event system to create features that feel native while accessing cloud-based intelligence Ensure Enterprise Excellence : Build plugins that work flawlessly across Excel 2016, 2019, and Office 365, handling corporate proxies, SSO, offline scenarios, and IT restrictions Optimize Ruthlessly : Make complex operations feel instantaneous, managing memory carefully and ensuring our plugin never slows down Excel Bridge Worlds : Translate between financial users' needs and technical possibilities, creating intuitive interfaces for sophisticated AI capabilities Establish Best Practices : Define patterns for desktop development excellence, mentoring the team on testing, deployment, and monitoring strategies for Office plugins You'll fundamentally change how AlphaSense's own equity research analysts turn raw market data into finishe