Messaging Lead-US Citizen - Washington DC

Company: Applicable Limited
Location: Washington, DC
Posted On: 05/08/2025

Req ID: 317013NTT DATA strives to hire exceptional, innovative, and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.We are currently seeking a Messaging Lead - US Citizen to join our team in Washington DC, District of Columbia (US-DC), United States (US).Position's General Duties and Tasks:We are looking for a skilled Messaging Lead to support our client in delivering enterprise services to a diverse user base of approximately 10,000 across multiple government agencies and missions. This role operates within a no-fail environment, ensuring messaging services are available 24/7/365 to users worldwide, focusing on core services managed by the Information Systems Division (ISD), including:

• Email for 15,000 mailboxes
• Instant messaging for 10,000 users
• Mobile device management for 10,000 devicesThe contractor provides Tier 2 through 4 systems engineering to maintain the reliability and security of these critical systems. Key responsibilities include:
  • Designing scalable messaging architectures, including email, instant messaging, and mobile device management systems, to meet mission-critical availability requirements.
  • Deploying updates, patches, and new features to messaging platforms while minimizing downtime and ensuring 99.99% system uptime.
  • Integrating messaging systems with related enterprise services, such as Active Directory, PKI, and security applications, for seamless functionality.
  • Maintaining system performance by tuning configurations, monitoring capacity, and addressing potential bottlenecks across on- and off-premises environments.
  • Troubleshooting complex messaging issues, such as delivery failures, synchronization errors, and security breaches, escalated from lower-tier support.
  • Testing system enhancements and configurations in controlled environments to validate reliability before deployment.
  • Documenting engineering designs, integration processes, and maintenance procedures to support operational continuity and audits.Required Qualifications:
    • Bachelor's degree in Computer Science, Information Systems, Engineering, Mathematics, or a related scientific or technical discipline. Education equivalency: 1.5 years of additional experience can substitute for 1 year of degree.
    • Minimum 10 years of relevant experience supporting projects of similar size, scope, and complexity (e.g., enterprise messaging systems with 10,000+ users).
    • Certifications: Compliance with DoD 8140 for IAT Level 2 (e.g., Security+, CCNA Security) is required at hire.
    • Must be a US citizen with an active Top Secret SCI Clearance and capable of receiving a higher level clearance.
    • Must live within commuting distance to Washington, DC.Preferred Qualifications:
      • Master's degree in Computer Science, Information Systems, Engineering, or related field.
      • Experience designing, deploying, and maintaining complex messaging platforms (e.g., email, instant messaging, MDM) in high-availability environments.
      • Certifications: Microsoft Certified Messaging Administrator, Microsoft 365 Certified: Enterprise Administrator, and DoD 8140 IAT Level 3 (e.g., CASP+, CISSP).
      • Over 5 years of systems engineering experience with messaging platforms in DoD or government settings.
      • Proficiency with enterprise messaging tools (e.g., Microsoft Exchange, Skype for Business), MDM systems, and Apple device management.
      • Ability to maintain 99.99% uptime supporting global users in a 24/7 environment.#FedsecAbout NTT DATANTT DATA is a $30 billion global leader in business and technology services, serving 75% of the Fortune Global 100. We are committed to innovation, long-term success, and diversity, with experts in over 50 countries. Our services include consulting, AI, industry solutions, and application management. As part of NTT Group, we invest heavily in R&D to advance digital and AI infrastructure. Visit us at .We strive to ensure accessibility of our website and provide accommodations for applicants. For assistance, contact us at . NTT DATA is an equal opportunity employer; see our EEO policy . For more EEO rights information, click . For Pay Transparency info, click .
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