Job Description

Role Summary:

The Exchange Migration Architect is responsible for designing, planning, and overseeing complex migration projects from on-premises Microsoft Exchange environments to Microsoft 365 Exchange Online. This role requires a deep understanding of Exchange Server architecture, Active Directory, identity and authentication models, hybrid configurations, and migration strategies. The architect ensures seamless migration with minimal business disruption, security compliance, and adherence to industry best practices.

Key Responsibilities:

Migration Strategy & Architecture

Design

high-level (HLD)

and

low-level designs (LLD)

for Exchange migrations (2010/2013/2016/2019 to M365). Assess current on-premises Exchange environment (mail flow, DAGs, namespaces, connectors, certificates, load balancers). Define migration approach: Cutover, Staged, Hybrid, or Third-Party Tools (Quest, BitTitan, etc.). Create a migration roadmap including timelines, phases, dependencies, and rollback plans.

Active Directory & Identity Management

Analyze and optimize

Active Directory

health (FSMO roles, replication, DNS, schema updates). Implement

Azure AD Connect

(or Cloud Sync) for directory synchronization. Plan and configure

identity models

(Cloud-only, Synced, or Federated). Design and validate

authentication mechanisms

: Modern Authentication, OAuth, Conditional Access, MFA, and SSO (ADFS/Entra ID).

Hybrid Configuration

Plan and configure

Exchange Hybrid Mode

(Hybrid Configuration Wizard). Design secure mail flow between on-premises and Exchange Online. Validate coexistence for mailboxes, calendars, free/busy lookups, and delegation.

Migration Execution & Tools

Select appropriate migration methods/tools based on environment size and complexity. Lead mailbox migration batches, public folder migration, and shared resource migration. Plan cutover weekends and user communication strategies. Troubleshoot migration failures and performance issues.

Security & Compliance

Ensure compliance with

ISO, GDPR, and organizational security policies

. Plan for

Data Loss Prevention (DLP), eDiscovery, and retention policies

. Secure hybrid connectivity with TLS, firewalls, and zero-trust principles.

Collaboration & Governance

Work with

stakeholders

(IT, Security, Compliance) to align migration with business objectives. Document HLD, LLD, migration runbooks, and operational guidelines. Conduct

knowledge transfer

to operations/support teams post-migration.

Required Skills & Expertise:

Core Exchange Skills

Deep knowledge of

Microsoft Exchange Server (2013/2016/2019)

architecture and administration. Expertise in

Exchange Online

(Exchange Admin Center, PowerShell). Understanding of

mail flow, connectors, accepted domains, and hybrid mail routing

. Experience with

namespace design, certificates, and load balancer integration

.

Active Directory & Identity

Strong understanding of

Active Directory architecture

, FSMO roles, DNS, replication, and GPOs. Experience with

Azure AD

,

Azure AD Connect

, and

hybrid identity management

. Familiarity with

ADFS

,

Pass-through Authentication (PTA)

, and

password hash sync

.

Authentication & Security

Knowledge of

Modern Authentication

,

OAuth

,

MFA

, and

Conditional Access

policies. Experience with

certificate management (PKI)

and

TLS security

.

Migration Tools & Methods

Hands-on experience with

Exchange Hybrid deployments

. Familiarity with

migration tools

like Quest On-Demand Migration, BitTitan, SkyKick. Ability to perform

public folder migrations

and

archive mailbox migrations

.

PowerShell & Automation

Proficiency in

PowerShell scripting

for Exchange, AD, and Microsoft 365 automation.

Networking

Good understanding of

SMTP, DNS, Firewall rules, Load Balancers

, and

Proxy configurations

.

Compliance & Governance

Awareness of

Microsoft Compliance Center

, retention policies, eDiscovery, and legal hold.

Soft Skills

Strong documentation skills (HLD/LLD). Excellent communication and stakeholder management. Problem-solving and troubleshooting under pressure.

Preferred Certifications:

Microsoft Certified: Exchange Server 2016/2019

(or legacy certifications like MCSE Messaging).

Microsoft Certified: Messaging Administrator Associate

.

Microsoft Certified: Identity and Access Administrator Associate

.

Microsoft 365 Certified: Enterprise Administrator Expert

.

TOGAF (for architecture principles)

- good to have.

Experience:

7+ years

in Exchange Server administration and migration projects.

3+ years

in Microsoft 365 migration and hybrid configurations. Experience handling

enterprise-scale migrations (10,000+ mailboxes)

is a plus.
Job Types: Full-time, Permanent, Contract, Temporary, Freelance, Internship, Fresh graduate, Student job
Contract length: 12 months

Pay: RM8,000.00 - RM18,597.16 per month

Work Location: In person