Sergey
Rubanov

Independent work across AI agent infrastructure, web platform standards, developer tools, observability, and open source.

• Build agent tooling around tool execution, task runtimes, JavaScript runtime behavior, web standards, and observability.
• Design operator controls for agent systems: provider readiness, routing 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.
• Turn research-heavy 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 through the Dispatch.run acquisition.

• Dispatch.run: owned the CLI for the Durable Functions platform, including local development, deployment flow, and cloud handoff.
• Researched deployment approaches for running Go code through WebAssembly on Cloudflare.
• Firetiger: worked on telemetry product 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++ across execution stability, platform integration, and runtime behavior.
• Enhanced JavaScript APIs for Node.js compatibility and native capabilities across mobile and desktop runtimes.
• Built tooling for project setup, local development, and runtime debugging.

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

• Developed a multi-tenant CRM and custom document editor with reusable layout templates.
• 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 frontend development for a web trading terminal, Chrome extension, Ledger hardware-wallet apps, and cryptocurrency products.
• 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 for call-center workflows and customer-interaction tracking.
• Developed a dynamic web-based operator-script generator, streamlining call-center operations and reducing response times.
• Worked with MySQL, MSSQL, and Oracle databases for CRM data, reporting, and call-center integrations.

Stack PHP · JavaScript · MSSQL · MySQL · OracleDB