Manage and support enterprise Microsoft infrastructure including Exchange on-prem and Exchange Online, Office 365, Azure AD and Azure AD Connect. Perform tenant/hybrid migrations, PowerShell automation, email security and retention configuration, Level 3 troubleshooting, documentation, mentoring, and collaborate with vendors and cross-functional teams following ITIL and change management.
Join our Team
About this opportunity:
We are looking for an experienced Senior infra system expert to manage and support enterprise Microsoft infrastructure, including, Exchange on-prem servers, Office 365, Azure Active Directory, Exchange Online. The ideal candidate will have strong expertise in Microsoft, Exchange on-prem servers, cloud technologies, tenant migrations, identity and access management, and infrastructure operations. This role also involves collaborating with teams, supporting infrastructure projects, and serving as an escalation point for complex technical issues.
What you will do:
The skills you bring:
"All academic credentials must be from recognized and accredited institutions and are further subject to verification."
Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: India (IN) ||
Req ID: 788666
About this opportunity:
We are looking for an experienced Senior infra system expert to manage and support enterprise Microsoft infrastructure, including, Exchange on-prem servers, Office 365, Azure Active Directory, Exchange Online. The ideal candidate will have strong expertise in Microsoft, Exchange on-prem servers, cloud technologies, tenant migrations, identity and access management, and infrastructure operations. This role also involves collaborating with teams, supporting infrastructure projects, and serving as an escalation point for complex technical issues.
What you will do:
- Administer can manage Exchange on-prem, Active directory, Azure AD, Office 365 services including Exchange Online, Microsoft Teams, &
Configure and manage Azure Active Directory, Azure AD Connect, SSO, SAML, and Identity & Access Management. - Develop and maintain PowerShell scripts for automation and administration.
- Configure email security, retention policies, spam protection, and message encryption.
- Collaborate with leads, team member, vendors, and cross-functional teams for successful project delivery.
- Create and maintain technical documentation.
- Troubleshoot complex infrastructure issues and provide Level 3 engineering support.
- Mentor junior engineers and contribute to continuous process improvements.
- Follow ITIL processes, change management, and security best practices
The skills you bring:
- Proficient in Microsoft Office 365 Administration, including user, license, and tenant management.
- Hands-on experience with Exchange Online and Hybrid Exchange administration and migration.
- Strong knowledge of Microsoft Azure Active Directory (Azure AD) for identity and access management.
- Experience configuring and managing Azure AD Connect for hybrid identity synchronization.
- Skilled in PowerShell scripting to automate administrative and operational tasks.
- Knowledge of Azure Information Protection (AIP) for data classification and information security.
- Experience with Privileged Access Management (PAM) to secure privileged accounts and access.
- Familiar with ITIL processes and ServiceNow for IT service management and incident handling.
- Strong troubleshooting, problem-solving, and analytical skills with the ability to resolve complex technical issues efficiently.
"All academic credentials must be from recognized and accredited institutions and are further subject to verification."
Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: India (IN) ||
Req ID: 788666
Ericsson Kolkata, West Bengal, IND Office
Ericsson Kolkata Hub Office
Planned smart‑green New Town with wide roads, parks and malls, minutes from the airport and close to Salt Lake’s IT hub. Eco Park and business parks like Ecospace add leisure and convenience for families and professionals.
Similar Jobs at Ericsson
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Define, package, price and drive go-to-market for telco cloud and HCP-based managed services. Lead service lifecycle, enable sales and delivery, engage customers and partners, prioritize tools/resources, and optimize profitability and operational scalability.
Top Skills:
CnfHybrid CloudHyperscaler Cloud PlatformsMulti-CloudOrchestration And Automation LayersPlatform-As-A-ServiceTelco CloudVnfZero-Touch Operations
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Provides second-level support for network incidents, problem resolution, and technical operations. Maintains and optimizes routers, switches, firewalls, proxies, load balancers, DNS, wireless infrastructure, and security solutions. Investigates problems, implements workarounds, improves deployed solutions, redesigns network alarms, documents procedures, and supports cloud networking across Azure, AWS, GCP, and IBM Cloud. The role requires hands-on troubleshooting, automation, stakeholder communication, and flexible 24x7 on-call support.
Top Skills:
AIAirwaveAruba ClearpassAruba SwitchesAutomationAWSAzureBgpCiscoCloudFormationDevOpsDhcpDnsEigrpEmail SecurityF5FirewallsGCPIbm CloudIp/MplsIpamIsmsJuniperLan/WanLinuxLoad BalancersMobility MasterOspfPalo AltoProxiesRipv2RoutersScalance-X Industrial Ethernet SwitchesScriptingSwitchesTerraformVpnWiresharkWlan
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Design, implement, and manage GitOps workflows using FluxCD and GitLab. Manage multi-environment Kubernetes deployments, develop Helm charts and Kustomize overlays, integrate CI/CD pipelines, automate IaC with Terraform/Helm/ArgoCD, secure secrets, monitor deployments, and collaborate with SRE and platform teams to enable self-service deployments.
Top Skills:
AnsibleArgocdDastDockerFluxcdGitGitlab Ci/CdGrafanaHashicorp VaultHelmKubernetesKustomizeLinuxLokiPrometheusSastSealed SecretsShell (Bash)SopsTerraformYaml
What you need to know about the Kolkata Tech Scene
When considering the industries shaping India's tech scene, gaming might not immediately come to mind. However, in the last decade, increased internet usage and greater access to mobile devices have catapulted the industry to new heights, with Kolkata-based companies like Virtualinfocom, Red Apple Technologies and Digitoonz, at the forefront, driving the design and animation of new gaming titles for players.

