We are seeking an experienced Provisioning Engineer – Subsea Optical Services to support the planning, provisioning, and lifecycle management of lit services delivered over dedicated subsea fibre pairs. This role focuses on high‑capacity lit wavelength and spectrum‑based services, delivered across Ciena optical transmission platforms. You will be responsible for end‑to‑end service delivery, from design collaboration and spectrum planning through provisioning, testing, handover, and operational readiness. The environment is technically demanding and change‑sensitive, requiring strong engineering discipline, excellent cross‑team collaboration, and a deep understanding of subsea fibre‑pair capacity, spectrum constraints, and service performance. Key Responsibilities Optical & Subsea Service Provisioning Plan, provision, modify, and cease lit 10G / 100G / 400G services across dedicated subsea fibre pairs Deliver end‑to‑end service activation for both On‑Net and Off‑Net services across resilient and diverse backhaul routes Provision services across Ciena 6500 platforms, including: WaveLogic 5 / WaveLogic 6 WaveServer platforms Associated optical shelves, ports, and services Execute service delivery across protected and unprotected architectures, ensuring compliance with design and SLA requirements Spectrum Services & Fibre Pair Capacity Management Design, provision, and configure Managed and Unmanaged Spectrum services, including: Quarter fibre‑pair increments Half fibre‑pair increments Manage and optimise optical spectrum allocation on subsea fibre pairs to maximise capacity while protecting in‑service channels Support modulation, baud rate, and power‑level changes to improve spectral efficiency Perform capacity management across: Subsea fibre pairs Subsea cable systems Ciena optical transmission networks Network Design & Cross‑Team Collaboration Work closely with Architecture and Design teams to optimise service routes, optical configurations, and spectrum usage Collaborate with Systems and Tools teams to: Configure alarms and thresholds Set up SNMP traps and monitoring Integrate ticketing and incident workflows to support lit and spectrum services Provide engineering input into new service models, capacity strategies, and network evolution initiatives Testing, Validation & Service Handover Perform end‑to‑end optical and service testing, including power, OSNR, BER, and path integrity Validate services against defined performance SLAs and delivery timescales Support controlled migrations, upgrades, and service re‑grades within agreed maintenance windows Deliver high‑quality service handover to customers and operations teams Documentation, Operations & Enablement Produce and maintain: Engineering Method of Procedures (EMOPs) End‑to‑end design sheets and service charts Handover and support documentation Support onboarding and inventory accuracy for: Ciena racks, shelves, ports, and optics Fibre pairs, spectrum allocations, circuits, and carrier services Cabling, ODFs, power, and cross‑connects Work with Operations and Service teams to: Build and refine support procedures Improve operational readiness for lit and spectrum services Contribute to service and network availability reporting across Ciena platforms Training & Knowledge Transfer Support the development of training materials, procedures, and documentation for NOC and Operations teams Act as an escalation and subject‑matter expert for complex provisioning and spectrum‑related issues About You Strong experience planning and provisioning services across Ciena 6500 products and services, including: WaveLogic 5 / 6 WaveServer Spectrum services Navigator / MCP Proven experience delivering end‑to‑end 10G / 100G / 400G lit services Solid understanding of: DWDM and ROADM architectures Subsea fibre‑pair service models Optical spectrum management and flexible‑grid networks Experience working in high‑value, low‑tolerance environments with strong change control and governance About Us At Indigo, you’ll join an inclusive culture that values diversity, integrity, and merit, empowering you to reach your full potential. We welcome candidates from all backgrounds, especially those underrepresented in our industry, including women, people with disabilities, and LGBTQ individuals. As a leader in the telecoms industry, Indigo offers endless opportunities for personal and professional growth in a dynamic market projected to expand from US $1657.70 billion in 2020 to US $2395.47 billion by 2027. With over two decades of experience and a presence in 90 countries, we specialize in cutting-edge technologies like Fixed Line, 5G, Edge DC, and Subsea. Recognized as one of the UK’s top-performing privately-owned technology companies, we prioritize the well-being and growth of our employees, fostering a respectful and inclusive atmosphere with over 30 nationalities. Our commitment to sustainability and innovation ensures a brighter future. As a proud recipient of the ‘Investors in People’ Gold Award, we invest in your growth and development. Join Indigo and make a real difference in an organization that offers unparalleled opportunities at the right place and time. Embark on an exciting journey with us. At Indigo, our smart, ambitious teams are dedicated to supporting our customers. Our culture of ownership and transparency empowers our team to achieve goals and exceed customer expectations. For over twenty-five years, we’ve partnered with some of the world’s leading network carriers and hyperscalers, with a diverse talent pool we celebrate differences, inviting new ideas, creativity, collaboration, and passion from every employee. Our commitment extends beyond the present, as we cultivate and mentor the next generation to access limitless growth opportunities. At Indigo, we understand that our people are the heart of our success. We are deeply committed to nurturing a work culture that prioritizes the well-being and growth of our employees. We take pride in listening to our team and taking action to continually enhance our company’s support and enriching environment. Our diversity is our strength, coming together as one team, we foster an atmosphere of respect and inclusivity, where collaborating with individuals from various backgrounds, cultures, and thinking styles empowers us to evolve into better professionals and leaders.