This is a full-time onsite role based in the location(s) posted and is performed from the designated work location five days per week. No relocation is offered.

AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.

The Principal Systems Engineer – OSS Design & Architecture is a senior individual contributor responsible for supporting the design, development, integration, and documentation of Operations Support Systems (OSS) capabilities for a critical government program. The position works closely with the program’s engineering team to ensure OSS capabilities are effectively integrated into the overall system architecture.

This role focuses on translating technical and operational requirements into practical OSS designs, interfaces, and system capabilities. The Principal Systems Engineer will perform detailed systems engineering analysis across network management, monitoring, service assurance, configuration, inventory, performance management, fault management, security, reporting, and related operational support functions.

The position requires strong hands-on systems engineering experience and the ability to work across network, security, operations, test, and vendor environments to develop technically sound, scalable, supportable, and testable OSS solutions

Job Duties/Responsibilities:

·       Support the Chief Engineer and Systems Lead in the development and maturation of the end-to-end OSS architecture.

·       Develop and document system architecture, functional requirements, system interfaces, data flows, dependencies, and integration requirements associated with OSS capabilities.

·       Translate program, technical, operational, security, and performance requirements into detailed system and subsystem requirements.

·       Develop and maintain OSS-related content supporting the High-Level Design (HLD) and Low-Level Design (LLD).

·       Define and document interfaces between OSS platforms, network infrastructure, security systems, operational tools, and other components of the solution.

·       Evaluate OSS products, technical approaches, and vendor solutions against defined requirements and architectural objectives.

·       Perform technical trade studies and engineering analyses to evaluate design alternatives and support technical decision-making.

·       Identify technical gaps, dependencies, integration issues, and architectural risks and develop recommended technical solutions.

·       Develop system requirements and interface definitions necessary to support end-to-end service monitoring, management, troubleshooting, and performance analysis.

·       Work with operations personnel to understand operational workflows and translate those needs into technical OSS requirements and capabilities.

·       Coordinate with test engineering personnel to establish OSS-related verification requirements, integration scenarios, test objectives, and acceptance criteria.

·       Participate in architecture reviews, design reviews, engineering working groups, technical interchange meetings, and system integration activities.

·       Prepare and review technical documentation including architecture diagrams, interface definitions, requirements, engineering analyses, design specifications, and technical decision documentation.

·       Maintain traceability between program requirements, system requirements, architecture, detailed design, implementation, and verification activities.

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Required Clearance:

Customer Specific Clearance (#clearable)

Required Qualifications:

·       Bachelor’s degree in Systems Engineering, Computer Science, Engineering, Information Technology, Telecommunications, or a related technical field.

·       Significant experience in systems engineering, solution architecture, network management, telecommunications, or OSS environments.

·       Experience designing or integrating OSS capabilities within complex, multi-vendor network environments.

·       Strong knowledge of systems engineering principles, including requirements analysis, architecture, interface definition, integration, verification, and validation.

·       Experience with network management capabilities such as fault, configuration, performance, inventory, monitoring, telemetry, and service assurance.

·       Experience developing technical requirements, architecture diagrams, interface definitions, and engineering documentation.

·       Strong analytical, troubleshooting, technical communication, and collaboration skills.

Desired Qualifications:

·       Experience supporting large federal government, telecommunications, or mission-critical infrastructure programs.

·       Experience with large-scale IP, WAN, SD-WAN, or managed network environments.

·       Knowledge of network telemetry, SNMP, APIs, event management, configuration management, topology, inventory, automation, and performance analytics.

·       Experience supporting system architecture, laboratory integration, test and evaluation, and production deployment.

Our Principal System Engineering jobs earn between $174,100.00 - $261,100.00 USD Annual. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

Joining our team comes with amazing perks and benefits:

• Medical/Dental/Vision coverage
• 401(k) plan
• Tuition reimbursement program
• Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
• Paid Parental Leave
• Paid Caregiver Leave
• Additional sick leave beyond what state and local law require may be available but is unprotected
• Adoption Reimbursement
• Disability Benefits (short term and long term)
• Life and Accidental Death Insurance
• Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
• Employee Assistance Programs (EAP)
• Extensive employee wellness programs
• Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone

Weekly Hours:

40

Time Type:

Regular

Location:

Middletown, New Jersey

Salary Range:

$174,100.00 - $261,100.00

AT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit-based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws. In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. Click here to learn more or request an application accommodation here.

Job ID R-125137 Date posted 10/10/2026