Senior Engineer - DCI - DWDM Network Engineering

Transmission / DCI Network Engineer, Core42, Abu Dhabi - UAE

About Us

Core42, a leader in AI-powered cloud and digital infrastructure, is driving transformative technology solutions globally. Leveraging advanced resources and partnerships, Core42 empowers clients to harness sovereign AI infrastructure, especially in sectors with stringent regulatory needs. With a mission to redefine digital transformation, we combine sovereign capabilities with scalable, high-performance compute infrastructure, positioning itself at the forefront of AI innovation in the Middle East and beyond.

The opportunity

The Transmission / DCI Network Engineer will be responsible for the design, implementation, and operation of Data Center Interconnect (DCI) infrastructure across Core42’s network environment. This role focuses on ensuring high performance, scalability, and resilience of DWDM/OTN networks supporting cloud and high-performance computing (HPC) workloads.

You will play a key role in optimizing network performance, leading advanced troubleshooting activities, and supporting the deployment and evolution of large-scale transmission infrastructure. Working closely with internal stakeholders and external vendors, you will ensure that Core42’s network solutions meet the highest standards of reliability, efficiency, and security.

Your key responsibilities

• Design, implement, and manage Data Center Interconnect (DCI) infrastructure using DWDM/OTN technologies, ensuring high availability and performance
• Lead advanced L3 troubleshooting and incident resolution for complex transmission and optical network environments
• Plan and optimize network capacity, traffic flows, and infrastructure utilization to support growing cloud and HPC demands
• Develop and review High-Level and Low-Level Designs (HLD/LLD), ensuring alignment with best practices and security standards
• Manage deployments, upgrades, maintenance activities, and change requests across data center environments
• Collaborate with internal teams, WAN providers, and technology vendors to deliver scalable and efficient network solutions
• Oversee network testing and acceptance, including fiber validation and service verification using NMS and specialized tools
• Maintain accurate and up-to-date documentation of network configurations, architecture, and operational processes
• Contribute to continuous improvement initiatives and knowledge sharing across network engineering teams

What we’re looking for

(a) Required skills / qualifications

• Bachelor’s degree in Electrical, Electronics, or Telecommunications Engineering
• Minimum 5 years of hands-on experience working with DWDM/OTN technologies in DCI or large-scale network environments
• Strong expertise in optical transmission networks, including design, implementation, and troubleshooting
• Proven experience working with advanced transmission technologies such as:
• Flex Grid and Super-Channels
• Coherent optical transmission
• CDC (Colorless, Directionless, Contentionless) architectures
• Layer 1 encryption
• MS-OTN environments
• Solid knowledge of fiber optic infrastructure, including implementation, testing, and acceptance processes
• Hands-on experience with testing equipment such as OTDR, OSA, Ethernet Analyzers, and Optical Light Source/Power Meter (OLS/PM)
• Good understanding of IP networking concepts and their integration with transport layers
• Knowledge of cloud and high-performance computing (HPC) environments and their interconnect requirements

(b) Preferred skills / qualifications

• Vendor certifications in optical/network technologies (e.g. Ciena, Nokia) are highly desirable
• Experience working in large-scale, mission-critical, or hyperscale environments
• Strong vendor management and stakeholder engagement skills
• Experience supporting NOC operations and collaborating with L1/L2 teams
• Strong analytical, problem-solving, and troubleshooting capabilities in high-availability environments
• Excellent communication and collaboration skills, with the ability to work across cross-functional teams

What working at Core42 offers

With a diverse team of 1,100+ employees from 68 nationalities, we foster an inclusive, innovative and collaborative environment. At Core42, we foster a culture grounded in trust, accountability and high performance. We are united by our values: Grit, where we overcome challenges with resilience and determination, Passion, which drives us to pursue excellence in everything we do, and Impact, as we aim to inspire progress and create meaningful change. Our team members thrive in an environment where each person’s contributions propel us forward, and together, we commit to achieving extraordinary results.

• Competitive Salary: We offer an attractive salary package based on your skills and experience
• Yearly Bonus: In recognition of your contributions, you will receive a performance-based annual bonus
• Exclusive Discount Cards: Access special benefits with Esaad and Fazaa cards
• Premium Family Insurance: Comprehensive health coverage including dental, vision and life insurance
• Learning & Development: Access to top-tier learning platforms with unlimited premium courses