Resume

Work experience

Software Engineer @ Last9 (Jan 2022–June 2025)

• Led alerting team for Last9
• Built and maintained in-house metrics-based alerting system to serve enterprise customers
  • Fetch timeseries data for alert rules and evaluate each rule, based on configured sensitivity and threshold
  • Manage flow across services, from evaluation to data transformation and storage of alerts
  • Notify users via multiple channels
  • Improve evaluation performance for multi-timeseries rules, allowing support for rules with 100s of timeseries
• Built end-to-end auth management for new service, usable for existing services
  • APIs to create refresh tokens with custom scopes, duration, request origins
  • Ability to invalidate refresh token and all access tokens created from it
  • Update middleware for existing services to keep them backward compatible with old tokens
  • Rate limiting for token usage
• Implemented a horizontally scalable solution for existing service
  • Use redis queue to serve multiple pods within deployment
• Built scalable APIs using Go
• Setup internal monitoring utilizing in-house alerting
  • Infrastructure monitoring via node exporter metrics
  • Application monitoring via API rate/error/duration metrics
  • Custom instrumentation via Prometheus library
• Handled oncall responsibilities, including during major events like IPL and World Cups for OTT providers

Languages and Technologies

• Languages: Go, Python, Ruby
• Technologies: Postgres, Docker, Kubernetes, Terraform, Redis, AWS, Git
• Other: Prometheus, OpenTelemetry, Grafana

Open Source

• Parca
• Buildpacks
• Linkerd
• Prometheus
• Hugo

Community/Talks

See Talks

Education

Delhi University
BSc. (H.) Biochemistry (2017-2020)
[CGPA: 8.6]

Contact

Email: importujjwal[at]gmail.com
Twitter: @importhuman