senior system engineer for optical transport

T-Digital is the Deutsche Telekom Tech powerhouse in Greece. We create compelling digital propositions for the worlds’ largest Telekom giant by building scalable and agile platforms to provide the best of digital experience to Deutsche Telekom customers across Europe.

We are agile and international organization where creativity and freedom are valued the most. We are looking for those who can embrace our culture, think outside the box and turn ideas into high quality products and services.

About Our Culture

We strive to build and strengthen a strong culture of caring and performance, building a workplace we are proud of. We attract good fellas, create life-changing experiences and believe in work-life balance. What we absolutely need from you is:

• Innovation focus

• Customer Obsession

• Growth Mindset

Our Guiding Principles

• Delight our Customers

• Get things Done

• Respect & Integrity

• One Team

• Ownership (I am T – Count on Me)

• Curiosity & Growth

What We Will Trust You With

As a Senior System Engineer for Optical Transport, you will play a critical role in the design, planning, and optimization of our high-performance optical transport infrastructure. Leveraging your deep expertise in DWDM Technology, OTN (Optical Transport Network), and Transport Network Architecture, you will be responsible for ensuring the robustness, scalability, and efficiency of our network. Your day-to-day will involve leading system engineering activities, complex troubleshooting, managing network planning and capacity, and engaging with vendors to drive technical solutions. In addition, you will support RFQ activities by translating network requirements into clear technical specifications, contributing to vendor evaluation criteria, assessing supplier proposals, and ensuring that selected solutions meet architectural, operational, scalability, and lifecycle requirements. We expect you to bring strong skills in analyzing and resolving optical transport faults, understanding link budgets, and ensuring network resilience. Furthermore, your ability to coordinate with cross-functional teams and potentially leverage Test-Automation (e.g., Python) will be key to evolving our cutting-edge transport networks.

About You

We are looking for someone who combines deep technical expertise with strong teamwork and communication skills.

What You Will Need

Must-Have Skills

• Solid experience in agile project management and product thinking methodologies 

• Professional stakeholder management (e.g., with vendors, partners) combined with excellent collaboration and communication skills 

• Experience in technical leadership within complex international technical projects 

• Experience with effective Vendor Management

• Strong expertise in DWDM Technology

• In-depth knowledge of OTN (Optical Transport Network)

• Proven experience with Transport Network Architecture

• Solid skills in System Engineering principles

• Proficient in Network Planning and Capacity Management

• Demonstrated ability in Complex Troubleshooting

Nice-to-Have Skills

• Experience with OTN, MPLS-TP, or IP/optical integration

• Familiarity with network management systems and performance monitoring tools

• Exposure to lab validation, proof of concept testing, or interoperability testing

• Experience documenting solutions, procedures, or handover materials

• Solid experience in Test-Automation

• Experienced in leveraging AI-based tools in day-to-day work

Social skills

• A mindset of continuous learning, willingness to share knowledge, and learn from others.

• Ability to think outside of the box and find solutions to complex problems.

• Being a strong individual contributor and an empathic team player.

• Ability to communicate effectively with different stakeholders in the company.

About What We Can Offer

• Flexible & remote work

• Very competitive annual bonus scheme

• Meal vouchers

• Private insurance

• Cool office spaces in Thessaloniki and Athens

• A new team that will support and challenge you on your path to growth

• Extra days off

• Opportunities to travel and work all around the world

• … and many more