Messaging Architect
CGI
Company Profile:
Founded in 1976, CGI is among the largest independent IT and business consulting services firms in the world. With 94,000 consultants and professionals across the globe, CGI delivers an end-to-end portfolio of capabilities, from strategic IT and business consulting to systems integration, managed IT and business process services and intellectual property solutions. CGI works with clients through a local relationship model complemented by a global delivery network that helps clients digitally transform their organizations and accelerate results. CGI Fiscal 2024 reported revenue is CA$14.68 billion and CGI shares are listed on the TSX (GIB.A) and the NYSE (GIB). Learn more at cgi.com.
Job Title: Messaging Architect
Position: SSE
Experience: 10+ years
Category: IT Infrastructure
Main location: Chennai/Bangalore
Position ID: J0926-1887
Employment Type: Full Time
Qualification: Bachelor's degree in Computer Science or related field or higher with minimum 3 years of relevant experience.
Job Description:
Mission
The Messaging Architect is a member of the Global Collaboration Services and UX Governance team. This role acts as an Architect, technical and strategic reference for enterprise messaging and communication platforms, ensuring consistency, security, scalability, and alignment with business objectives across a global organization. The primary mission of the Messaging Architect is to design, architect, deploy, govern, manage and optimize enterprise messaging and communication platforms, covering:
- Enterprise Email & Messaging (Postfix, Exchange Online, Hybrid Exchange)
- Email Security & Hygiene (Proofpoint)
- Microsoft 365 & Identity integrations
- Unified Communication integrations including CPaaS
- Automation, API integration, and governance
- MS Places
Key Responsibilities
- Postfix & SMTP / Email Relay Architecture
- Architect, deploy, migrate, upgrade, and maintain Postfix-based SMTP relay platforms on Red Hat Linux.
- Extensive hands-on expertise in:
SMTP authentication (AD-based and local authentication)
TLS, certificates, and secure relay configurations
High availability, performance tuning, and scaling Postfix environments
- Experience with other Linux-based email components/MTAs.
- Design end-to-end mail relay architecture, including:
Whitelist IP address to source email address matching
Network flows, firewall rules, and routing
Secure relay patterns for SaaS, on-prem, and third-party systems
- Strong automation and scripting skills for Linux email platforms.
- Reporting experience exporting smart reports segregating source applications based on private/public Ips.
- Microsoft Exchange & Microsoft 365
- Architect and manage Exchange Online for large enterprise environments.
- Strong experience with:
- Exchange Online / Exchange Online Protection (EOP)
- Hybrid Exchange (Exchange 2019)
- Decommissioning/Re-architect post migration
- Public/private Certificate renewal/management
- Design and govern:
- Mail flow, connectors, transport rules
- Security, compliance, and governance controls
- Archive and Backup Strategies for Mail
- Deep knowledge of:
- Purview (DLP, retention policies, sensitivity labels, eDiscovery)
- Microsoft 365 tenant management
- Clients: Outlook (Windows/Mac), IMAP, POP3, mobile devices, Active Sync, Intune over Modern Authentication protocol.
- Knowledge on Entra ID Connect, Entra AD RMS, and identity-driven mail authentication.
- Troubleshoot mail related issues.
- Keep a tab Microsoft 365 notification and be pro-active on communicating, planning and executing.
- Onboarding and offboarding automation of joiners/leavers integrating with 3rd party tools like Jarvis/One Identity.
- Proofpoint – Email, Network, DNS Security & Hygiene
- Strong hands-on experience with Proofpoint email security platforms.
- Architect and manage end-to-end Proofpoint + Exchange Online integrations.
- Deploy and manage Proofpoint appliances for secure email relay.
- Design and implement:
- Email hygiene policies
- Firewall policies, Domain integration, Whitelist/Blacklist
- Message header based rules
- Anti-phishing, anti-spam, and threat protection rules
- Governance and compliance use cases
- Act as the security reference for messaging solutions in collaboration with the Security team.
- Troubleshooting mail flow related issues
- Strong understanding of:
- SMTP protocol and mail routing
- Public mail domain management
- DNS records: MX, SPF, DKIM, DMARC, TXT
- SMTP alias hosting and domain integration
- Ability to collaborate closely with network, server, and security architects.
- Migration & Transformation
- Extensive experience in large-scale migrations, including:
- Tenant-to-tenant (M&A, divestments)
- On-premise to cloud migrations
- Mail domain migration and coexistence
- Perform discovery, scoping, and estimation (LOE), wave wise data migrations for messaging transformation projects.
- Provide in-person and remote support during migration and cutover and Hyper-Care phases.
- Experience working with 3rd party tools like Quest On Demand, Sharegate, Avepoint etc.
- Experience working on MS places and onboarding new offices, integration, building, desks, pools etc.
- Automation, APIs & Integration
- Strong PowerShell scripting capabilities for Exchange, Entra ID, and Microsoft 365 with Entra ID SPN/app-based unattended approach.
- Experience with Microsoft Graph / REST APIs for automation and integration.
- Entra ID integration, Service Principals, managed identity knowledge.
- Power Platform based automation (power-Apps, Power Automate, Power BI) is a strong advantage.
- Good-to-have experience integrating messaging platforms with CPaaS solutions.
- Reporting to showcase different messaging KPIs, Metrics through automated Dashboard is an added advantage.
- Documentation & Support
- Ensure technical architecture documents (TAD), KBs, and operational guides are created, maintained, and up to date.
- Define and enforce messaging governance standards.
- Provide Level 3 support for complex mail and messaging incidents.
- Educate and upskill Level 1 and Level 2 support teams.
- Communicate and educate both technical and business stakeholders on:
- Current architectures
- Industry trends
- Microsoft roadmap and enterprise impact
- Core Technical Skills
- Postfix (Red Hat Linux) –proven Expertise
- Exchange Online / Hybrid Exchange
- Exchange On premise 2019
- Microsoft 365 & Entra ID
- PowerShell scripting & automation
- SMTP, DNS, Mail Security standards
- Microsoft Graph / REST APIs
- Proofpoint Email Security
- MS places
- Additional Competencies
- Strong troubleshooting skills with ability to identify and resolve performance, stability, and availability issues.
- Experience working in large, global enterprise environments.
- Strong understanding of digital security principles.
- Ability to work collaboratively with international teams.
- Excellent written, verbal, and presentation skills.
- Ability to communicate complex technical topics to non-technical audiences.
- Experience with integrated Cloud SaaS and IaaS solutions.
- Innovation mindset with focus on security, governance, and service quality.
- CPaaS platform integration experience (InfoBip, Sinch, Twillio etc)
- Nice to Have
- Teams / Sharepoint exposure
- Power Platform experience with Power Automate/Apps/BI
- Proven experience of delivering process efficiencies and improvements
- Clear and fluent English (both verbal and written)
- Ability to build and maintain efficient working relationships with remote teams
- Ability to plan, prioritise and complete your own work, whilst remaining a team player
- Willingness to engage with and work in other technologies
Life at CGI:
It is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction
Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise
You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons
Come join our team, one of the largest IT and business consulting services firms in the world
Your future duties and responsibilities
Required Qualifications To Be Successful In This Role
Together, as owners, let’s turn meaningful insights into action.
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.
Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.
Come join our team—one of the largest IT and business consulting services firms in the world.