Sergey
Rubanov

AI agent infrastructure, web platform standards, developer tools, observability, and open-source projects.

• Build AI agent and developer-tooling systems across tool execution, agent-task runtimes, web standards, JavaScript runtime internals, and observability.
• Design operator-facing reliability controls for agent systems: provider health/readiness, route diagnostics, trace links, usage/cost visibility, policy boundaries, approvals, and sandbox-aware execution.
• Contribute to TC39/ECMA-262 and Test262 by analyzing proposal trade-offs, refining specification text and semantics, and collaborating with browser vendors, JS engines, and the standards community.
• Work independently in ambiguous, research-heavy spaces: turn loosely defined agent/runtime ideas into usable tools, documentation, release paths, and test loops.

• Co-authored the Promise.any proposal and contributed editorial improvements to ECMA-262.
• Participate in proposal discussions, evaluate compatibility and ergonomics trade-offs, and develop Test262 tests to validate JavaScript behavior across engines.

Joined Firetiger after the acquisition of Dispatch.run; initially spent four months at Dispatch.run.

• Dispatch.run: owned the CLI for the Durable Functions platform, improving developer experience and local-to-cloud workflow reliability.
• Researched deployment approaches for running Go code through WebAssembly on Cloudflare.
• Firetiger: contributed to the telemetry product across core features, infrastructure, and OpenTelemetry compatibility.
• Supported early customers through onboarding, troubleshooting, integrations in Python/TypeScript, Vercel support, and Kubernetes/Terraform deployment workflows.

Stack Go · Python · TypeScript · Node · Next.js · Vercel · Docker · Kubernetes · Terraform · AWS / GCP / Cloudflare · OpenTelemetry / Prometheus / Grafana / OTel Collector

• Developed core Socket Runtime components in C++ to improve execution stability and platform behavior.
• Enhanced JavaScript APIs for Node.js compatibility and native capabilities across mobile and desktop runtimes.
• Built tooling to streamline developer workflows and reduce setup friction.

Stack C++ / C / Objective-C++ · JavaScript / TypeScript · Node.js · WebKit- and Chromium-based webviews (WKWebView, libwebkit2gtk, WebView2)

• Developed a multi-tenant CRM and a custom document editor with layout templates to reduce manual formatting effort.
• Optimized the document rendering pipeline to improve load times and editor responsiveness.

Stack React / Svelte · Flow · Node.js · Relay · Docker + Composer · Headless Chromium · GCP

• Led development of a web trading terminal, Chrome extension, Ledger hardware-wallet applications, and web3/cryptocurrency projects.
• Mentored and interviewed web developers while leading delivery across React/Preact, TypeScript, RxJS, D3, Redux/MobX, and browser-extension work.

Stack React/Preact · Redux/MobX · RxJS · D3 · TypeScript · C

• Built a React-Native-like JavaScript SDK for an interactive TV platform; helped adopt SpiderMonkey and later migrate to V8.
• Managed build systems, DevTools extensions, and R&D for client applications.

Stack JavaScript · Babel · React · Chrome DevTools extensions

• Led frontend team to deliver the frontend for an advertising platform.
• Established unit testing with Karma and Jasmine to reduce frontend defects and regression frequency.
• Coordinated with backend and product teams to resolve integration issues and improve data accuracy.

Stack Angular · JavaScript

• Built a CRM-like system with integrations for call-center software: Genesys Agent Desktop and Oktell.
• Promoted to Team Lead in 2012; led a team to implement a CRM system, enhancing client interactions and driving measurable improvements.
• Developed a dynamic web-based operator-script generator, streamlining call-center operations and reducing response times.
• Managed and optimized databases (MySQL, MSSQL, Oracle), ensuring data integrity and system performance for critical applications.

Stack PHP · JavaScript · MSSQL · MySQL · OracleDB