Lennox International

Lead Architect - AD, Exchange & O365

Job Locations IN-Chennai
Requisition #
Information Technology
Shift / Hours

Company Profile

Lennox International Inc. (LII) is a global leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our air conditioning, heating, indoor air quality, and refrigeration systems. Lennox International stock is listed on the New York Stock Exchange and traded under the symbol LII.  

Job Description

  • Design and implement complex solutions for enterprise sized Hybrid environment – involving Exchange Online, Azure AD, MS Teams, Exchange On-prem, Microsoft Collaboration suite, Active Directory (AD), Single Sign On (SSO), Active Directory Federation Services (ADFS), Amazon Simple eMail Service (SES)
  • Proven track record of delivering large O365 transformational projects, Integration of apps for Identity Management, Reporting solutions, Collaboration solutions and act as a O365 Subject Matter Expert reviewing and delivering Business requirements
  • Should be flexible with work schedule, accommodating evening hours meetings with US team and stakeholders


  • Any qualification with 13+ years of experience in below skills
  • Must have Exchange / Active Directory / Office 365 / ADFS / AD Connect.
  • Extensive experience of designing and delivering complex architectures, strategies and specific solutions with a successful track record of delivery, and a broad understanding of MS technologies.
  • Expertise of O365 applications (e.g. Exchange online, OneDrive, Teams) with a proven track-record of designing complex, large O365 transformational programmes, including hybrid configuration and Identity and Access management.
  • Awareness of Exchange Architecture - best practice for the design of a solution to suit various different customer requirements for messaging On Premise, Hybrid & Online
  • Demonstrate a clear track record in at least two or more skills area such as Reporting solutions, Collaboration solutions and / or Integration solutions.
  • Know how to size Exchange using the MS provided calculators and how to plan for resilience in hybrid type deployments
  • Practical Exchange  product experience - installing, configuring, development and deploying solutions
  • Required to understand their business and technical requirements to design O365 solutions to improve our employee experience.
  • O365 Subject Matter Expert within the business and to the end customers, responsible for delivering enterprise-sized O365 solutions.
  • Designing complex O365 solutions, leading work-streams on transformational programs and ensuring conformance to agreed design standards, methods and tools, including prototyping new tools and applications where appropriate.
  • Resolution ownership of technical challenges for O365 projects and the technical escalation point for the implementation teams.
  • Mentoring and coaching more junior architects within the team through both performance management and community-led collaboration.
  • A good working knowledge of the entire O365 stack, including their interactions and use cases.
  • Key competencies to include coaching, influencing senior stakeholders, managing time & priorities, conflict management, commercial / bid awareness, excellent presentation delivery and technical writing.
  • Windows Server and Active Directory (208 R2, 2016 and 2019)
  • Active Directory Migration
  • Active Directory Federation Service (ADFS)
  • AD Connect
  • Active Directory integrated applications (includes single sign-on)
  • DNS services • DHCP services • NTP services
  • Group Policies Deployment and Troubleshooting
  • Email Gateway (barracuda or other 3rd Party Email Gateways)
  • Exchange Hybrid Configuration
  • Exchange On-premise (2010, 2016 and 2019)
  • Exchange High Availability (DR Experience and Public Folder Migration)
  • Amazon Simple Mail Service
  • DNS – Windows DNS Service and Infoblox (Good to have)
  • Azure Active Directory
  • Azure Single Sign on Transformation Experience

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