Hi, I’m
ALOK RAJAK
Bangalore
Summary
Technical Architect with over 16 years of experience in designing and optimizing cloud infrastructure. Strong background in finance and healthcare industries, utilizing Azure and AWS to improve performance and security. Skilled in team leadership and stakeholder collaboration for successful project delivery.
Overview
16
years of professional experience
5
Certification
Work History
Microland LtdBangalore
Technical Architect
08.2022 - Current
Job overview
- Deployed Microsoft Sentinel for centralized threat monitoring, configuring connectors across Azure AD, O365, Defender, Palo Alto, and Mimecast
- Proven expertise in delivering secure, scalable, and highly available architectures aligned with business and compliance requirements.
- Deep hands-on experience with Microsoft Azure, including Azure Landing Zones, Azure Arc, VNET architecture, Azure Policy, RBAC, and governance models.
- Skilled in building cloud foundations that support regulated workloads and large-scale enterprise adoption.
- Strong expertise in Kubernetes and Azure Kubernetes Service ‘AKS’, including cluster architecture, node pools, ingress controllers, autoscaling, and containerized workload management using Docker and Kubernetes best practices.
- Extensive experience with Infrastructure as Code 'Terraform' and CI/CD pipelines using Azure DevOps and GitHub Actions, enabling automated, consistent, and reliable deployments across environments.
- Proven success in cloud migrations, modernization, and cost optimization.
- Security-focused architect with solid expertise in Azure AD, IAM, Microsoft Defender, Azure Security Center, monitoring, and observability using Azure Monitor, Log Analytics, Prometheus, and Grafana.
- Combined with strong leadership in architecture governance, incident response, and cross-functional collaboration.
- Built a Syslog server ‘Ubuntu) for ingesting firewall logs and ensured reliable data flow via Azure Arc agents
- Migrated logging infrastructure from Exabeam to Sentinel, enhancing visibility and threat response
- Microland Ltd specializing in IT services
Mphasis LtdBangalore
Sr. Principal Infrastructure Engineer
01.2021 - 08.2022
Job overview
- Designed and maintained Cloud Infrastructure to exceed service level agreements (SLA).
- Advised clients on best cloud practices and architectural strategies.
- Defined technical direction and roadmap for Cloud migrations, overseeing implementation of solutions.
- Monitored performance of Cloud Infrastructure, resolving technical issues efficiently.
- Led a Cloud Infrastructure team, ensuring effective support for projects to meet SLA requirements.
- Implemented solutions utilizing cloud components: compute, storage, network, security, and governance.
- Provided clear instructions and knowledge sharing to enhance team collaboration.
- Maintained 24x7 standby availability for operational support during off-hours and holidays.
Huawei TechnologiesBangalore
Technical Architect
01.2020 - 01.2021
Job overview
- Oversaw infrastructure management for Windows, virtualization, Huawei Cloud, and Fusion Cube.
- Directed security and vulnerability remediation utilizing SCCM.
- Led a team of 25 resources to achieve operational goals.
- Ensured compliance with service level agreements (SLA).
IBM IndiaBangalore
Sr. Windows Admin – SME
02.2018 - 01.2020
Job overview
- Work collaboratively with peers in the Data Center Compute team on virtualization and cross-platform interoperability tasks.
- Participate in and execute global disaster recovery programs and business continuity planning.
- Participate in updating the security patches and reporting for the Windows servers.
- Participate in a 24/7 on-call engineer rotation, supporting our core services.
- Maintain the service level agreement for all operational incidents.
SynechronTechnologiesPvt.Ltd.Bangalore
Lead-IT Operations
10.2016 - 01.2018
Job overview
- Troubleshooting and resolving tickets related to OEM hardware-related issues.
- Analyzing server, hardware, cluster, and application-related issues, and providing solutions adhering to the ITIL process.
- Upgrade and maintain OS versions, cluster resource management, and enhancement activities.
- Managing the change implementation, priority calls like production issues, application functional issues, DC management, FS design, and major hardware outages.
Stratogent Technology Services Pvt. Ltd.Bangalore
Sr.System Engineer
09.2015 - 10.2016
Job overview
- Managing the Networking and Storage Infrastructure in System Center 2012 R2 Virtual Machine Manager.
- Working on problem tickets and providing root cause analysis for recurring issues.
- Managing servers with RDP, iLO, DRAC, IPMI, and vSphere Web Client 6.0.
- Troubleshooting and analyzing hardware, operating system-related issues, crashes, hangs, hardware failures, unexpected reboots, and memory dumps, and providing an availability report.
- Patching Windows servers (Exchange, Domain Controller, Hyper-V Core) through WSUS.
HCL Infosystems LimitedBangalore
System Associate
12.2013 - 07.2015
Job overview
- Creating a distribution list, providing 'Send As' / full permission to the user mailbox.
- Creating SOPs for L1 and L2 engineers.
- Updating Employee ID/Mobile Number attribute in AD users.
- Managing VMs through vSphere Client and vSphere Web Client.
- Analyzing performance issues and performance counters, PAL reports.
Aceline Infosolutions Pvt. LtdKOLKATA, West Bengal
System Administrator
12.2012 - 06.2013
Job overview
- RAID Configuration & maintenance.
- Configuration, Maintenance & backup.
- Client configuration through Group policy or manually.
- Installation, Configuration & Maintenance.
- Installing & Configuring DHCP & DNS.
- Server Monitoring.
- Client configuration through Group policy or manually.
VFS Global Pvt. India Ltd.KOLKATA, West Bengal
Junior Associate
05.2011 - 10.2012
Job overview
- Updating OS & Implementing Patches on all the servers & Desktops across the Network using WSUS.
- Installing, configuring, and troubleshooting HP Thin Client, Barcode & Impact Printers.
- Managed and maintained network services, including high volume Mail/POP/IMAP servers as well as Web, DNS, and FTP servers.
- Responsible for installing/configuring/troubleshooting Networks for remote job sites.
- Installing configuring and troubleshooting wireless networks and installing/troubleshooting Network printers and print servers.
Saregama India Ltd.KOLKATA, West Bengal
System Engineer
10.2009 - 05.2011
Job overview
- Creating windows domain, implementing group policies, ACL for different users, Users & group creation, and management.
- Coordinate and monitor troubleshooting to isolate and diagnose common system problems.
- Significance pertaining to networking connectivity issues, printer, server, and application to meet business needs.
- Maintaining and managing total LAN infrastructure, all switches, and routers.
- Configuring VPN, NATTING, ACL, IP addresses on Routers and Switches.
Education
Sikkim Manipal UniversityKolkata
Bachelor of Science (B.Sc.)
08.2015
Skills
- AZURE solutions architect
- AWS solutions architect
- Kubernetes management
- Infrastructure as code
- Cloud migration strategies
- Cloud infrastructure design
- Performance monitoring
- Problem solving
- Client consultation
- Technical architecture design
- Technical design documentation
- Experience with devops practices
Certification
- Microsoft Certified: Azure Solutions Architect Expert
- AWS Certified Solutions Architect - Professional
- Windows Server Hyper-V and System Center Specialist
- Microsoft Certified Enterprise Administrator (MCITP)
- ITIL Foundation (HCL Internal)
Accomplishments
Successfully migrated legacy systems to hybrid cloud, enhancing performance and significantly improving security to receive internal awards
Timeline
Technical Architect
Microland Ltd
08.2022 - Current
Sr. Principal Infrastructure Engineer
Mphasis Ltd
01.2021 - 08.2022
Technical Architect
Huawei Technologies
01.2020 - 01.2021
Sr. Windows Admin – SME
IBM India
02.2018 - 01.2020
Lead-IT Operations
SynechronTechnologiesPvt.Ltd.
10.2016 - 01.2018
Sr.System Engineer
Stratogent Technology Services Pvt. Ltd.
09.2015 - 10.2016
System Associate
HCL Infosystems Limited
12.2013 - 07.2015
System Administrator
Aceline Infosolutions Pvt. Ltd
12.2012 - 06.2013
Junior Associate
VFS Global Pvt. India Ltd.
05.2011 - 10.2012
System Engineer
Saregama India Ltd.
10.2009 - 05.2011
Sikkim Manipal University
Bachelor of Science (B.Sc.)