Messaging Lead-US Citizen

Company: Applicable Limited
Location: Washington
Posted on: May 3, 2025

Job Description:

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 that messaging services are available 24/7/365 to users worldwide, with a focus on the core services managed by the Information Systems Division (ISD), including email for 15,000 mailboxes, instant messaging for 10,000 users, and mobile device management for 10,000 devices. The 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, to ensure 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 production 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: One-and-one-half (1.5) years of additional experience can substitute for one (1) year of a typical degree program.
    • 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 Information Assurance Technician (IAT) Level 2 (e.g., CompTIA Security+, CCNA Security, or equivalent) is required at the time of hiring.
    • Must be a US citizen who possesses an active Top Secret SCI Clearance and who is capable of receiving a higher level clearance.
    • Must live a commutable distance from the client site in Washington, DC.Preferred Qualifications:
      • Master's degree in Computer Science, Information Systems, Engineering, or a related discipline.
      • Demonstrated expertise in designing, deploying, integrating, and maintaining complex messaging platforms (e.g., email, instant messaging, mobile device management) in a high-availability environment.
      • Certifications: Microsoft certifications (e.g., Microsoft Certified: Messaging Administrator Associate, Microsoft 365 Certified: Enterprise Administrator Expert) and DoD 8140 IAT Level 3 compliance (e.g., CASP+, CISSP).
      • More than 5 years of experience in systems engineering, particularly with messaging platforms in a DoD or government enterprise setting.
      • Proficiency with enterprise messaging tools (e.g., Microsoft Exchange, Skype for Business), mobile device management systems, and Apple device management platforms.
      • Proven ability to maintain 99.99% system uptime in a 24/7/365 operational environment supporting global users.#FedsecAbout NTT DATANTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at
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Keywords: Applicable Limited, Reston , Messaging Lead-US Citizen, Other , Washington, Virginia