Bhagwant Singh Saini

Unix Engineering / Site Reliability

• Provide L4 support for critical UNIX platforms (RHEL, OEL, Solaris) hosting mission-critical applications (Payments & Trading systems).
• Drive capacity planning, performance benchmarking, and hardware certification for new infrastructure to meet SLOs.
• Develop automation frameworks for provisioning, patching, compliance, and recovery, reducing toil and improving MTTR.
• Manage OS lifecycle (build, patching, upgrades) aligned with security and regulatory standards.

SRE :-

• Collaborate with Ops teams to enhance observability (monitoring, logging, alerting) and improve operational resilience.
• Design failover strategies, backup validation, and high-availability architectures.
• Identify repetitive operational tasks and implement automation to reduce manual intervention.
• artner with DevOps, application, and database teams to ensure services are reliable and scalable.
• Integrate security best practices into automation, deployments, and monitoring; maintain compliance with regulatory standards

• Worked on Synergy (HP) implementation and configuration automation including build, network and firmware.
• Provide Level4 (L4) support through incident and problem management for Unix issues (RHEL, OEL, Solaris, SUSE, AIX).
• Certification of all new forthcoming hardware which includes capacity and performance attestation in Deutsche Bank.
• Develop new automation tools in compliance with Unix KOP and security standards for Deutsche Bank.
• OS Build and Patch management including new certification and development to meet regulatory demands.
• Support and SPOC (single point of Contact) for Oracle Grid/RAC Cluster (DHS)
• Single Point of contact for Major Problem Tickets related to major outages in Bank.

Senior UNIX Infrastructure Engineer

• Delivered L3/L4 support for UNIX (RHEL, OEL, Solaris, SUSE, AIX) in global banking/trading environments.
• Led onshore escalations & offshore teams, ensuring stability of mission-critical systems.
• SME for core infra: NFS (Veritas CVM), NIS, Samba, Oracle RAC/Grid clusters.
• Expertise in Veritas Cluster/Volume Manager, Solaris Zones, EMC SRDF/BCV, NetApp, Symantec NetBackup.
• Drove incident/problem management (P1–P3) under ITIL framework; executed DR across USA/EMEA/APAC.
• Automated operations using Opsware, Puppet, BladeLogic, Tivoli.

UNIX Infrastructure Engineer / Service Manager – GE (via HCL)

• Led transition of 4000+ UNIX servers & 6PB storage across US datacenters.
• Provided L3/L4 support for Solaris, RHEL, OEL, AIX with 95%+ SLA compliance.
• Acted as SPOC for SEV-0/SEV-1 incidents, RCA, and disaster recovery.
• SME in patching & automation (Opsware, Puppet, LU); built/maintained servers via JumpStart, Kickstart, WANBoot.
• Managed storage & clusters: EMC migrations, Veritas VxVM/Cluster, ZFS, LDOMs, Solaris Zones.
• Delivered infra support for new apps, UATs, and performance tuning.

UNIX/Linux Engineer – ISP & Enterprise Mail Systems

• Led Postfix/MySQL mail server projects and implemented anti-spam solutions (SpamAssassin).
• Deployed and managed Linux/Solaris servers with firewall, proxy, DHCP, and monitoring setups.
• Provided infrastructure support, virtualization (VMware, LDOMs, Zones), and training on RedHat Linux.
• Tools: VERITAS Cluster, Oracle RAC, EMC/NetApp, Symantec NetBackup, Opsware.