Rajeshkumar Manivannan

About Rajeshkumar Manivannan

20 years of professional experience in supporting mission critical applications.• Played the roles of Site Reliability Engineer for business-critical applications, Observability lead for large transformation implementations Project Manager leading global application support teams.• Experienced in designing and maintaining monitoring dashboards that surface SLIs, service health, and key performance indicators for application and infrastructure operations teams.• Proficient in establishing and implementing alert hygiene practices: deduplication, rate-limiting, suppression during planned maintenance, and alert fatigue reduction through escalation policies and grouping.• Skilled in leading teams on end-to-end support of large-scale distributed environments.• AWS Solutions Architect Associate certified with a strong, practical understanding of AWS services and cloud-native architecture.• Experience with operating and managing Kubernetes clusters for production workloads with emphasis on high availability, resilience, and cost-efficient scaling.• Expert with incident management lifecycle: detect, triage, mitigate, and remediate incidents with predefined runbooks, clearly defined on-call rotations, and escalation paths.• Experience with automating routine operational tasks using python and shell scripting.• Worked on measuring and improving key SRE metrics (MTTR, MTBF, change failure rate, deployment frequency, and SLO compliance) to guide operational decisions.• Practice Management activities like managing document repository, interviewing candidates, conducting internal training and mentoring/coaching.

Experience

1. Senior Site Reliability Engineer

   Cognizant

   Dec 2020 — Present · Portsmouth, NH, US

Education

• Madras Institute of Technology

  Bachelor of Engineering (B.E.), Production Engineering

  2002 — 2006