- Design and develop JavaScript-based monitoring agents that capture performance metrics, errors, and user interactions in the browser.
- Work with browser performance APIs (Navigation Timing, Paint Timing, Long Tasks, Performance Observer) to track key metrics.
- Implement support for Core Web Vitals (LCP, FID, CLS, INP) and other industry-standard KPIs.
- Ensure that monitoring agents are lightweight, efficient, and non-intrusive.
- Collaborate with backend/APM teams to correlate frontend traces with backend monitoring data.
- Keep up with latest web performance standards and W3C specifications.

Must-Have Skills

- 3+ years of professional JavaScript/TypeScript development experience.
- Strong expertise in browser APIs and event-driven programming.
- Hands-on experience with performance measurement and optimization in web apps.
- Solid understanding of Core Web Vitals and web performance monitoring.
- Familiarity with cross-browser compatibility and web debugging tools.




- Experience with one or more frontend frameworks (React, Angular, Vue).
- Knowledge of compression techniques (gzip, brotli).
- Exposure to RUM or frontend monitoring tools (Recent Relic, Datadog RUM, Dynatrace, Sentry, etc.).

Nice-to-Have Skills

- Experience building or contributing to JavaScript SDKs/agents.
- Knowledge of Web Workers, Service Workers, WebSockets.
- Familiarity with Open Telemetry for frontend instrumentation.
- Understanding of privacy and compliance in telemetry (PII masking, GDPR considerations).
- Experience with session replay libraries and customization.
- Prior contributions to observability, analytics, or APM solutions.

Location: (India, Panindia, Remote, WFH, "work from home") Bengaluru,Hyderabad,Delhi / NCR,Chennai,Pune,Kolkata,Ahmedabad,Mumbai

📌 Senior JavaScript Engineer (Hyderabad)
🏢 Codemind Staffing Solutions
📍 Hyderabad