Lead Nso Developer

**Lead Cisco NSO Developer (Python / MAAPI / Service Provider Networks)** ========================================================================= **Job Profile Summary** ----------------------- As a **Lead Individual Contributor (IC)**, this role is responsible for solving **sophisticated technical problems** and guiding teams through **code, architecture, and build decisions** within the Network Automation domain. You will: * Define and **own technical direction** for Cisco NSO-based automation * Lead **architecture and implementation** of scalable, reusable solutions * Raise engineering standards through **hands-on leadership, mentorship, and reuse** * Deliver **high-quality automation solutions** that accelerate delivery and reduce duplication across the REFLEX platform **Role Purpose** ---------------- We are seeking a **Lead Cisco NSO Developer / Architect** with deep expertise in: * **Cisco NSO (6.x)** * **Python development** * **MAAPI-driven service implementation (critical requirement)** This role sits within the **Network Automation team** and drives the evolution of **REFLEX**, an intent-based automation platform enabling **fully automated, multi-cloud network connectivity provisioning** across global infrastructure. **Key Responsibilities** ------------------------ ### **Technical Leadership & Ownership** * Lead the **technical direction and architecture** of NSO-based automation systems * Lead design and delivery of **template-less services using MAAPI** * Establish **guidelines for scalable, reusable service models** * Mentor engineers and guide design decisions across teams ### **Cisco NSO & Automation Development** * Develop production-grade services using: **Python (maapi, requests, netaddr)** **YANG models** * Implement: Stacked and composite services Full service lifecycle (CRUD ownership model) Transaction-safe, idempotent workflows * Integrate NSO with broader ecosystem via: RESTCONF / APIs Mid-tier orchestration (MIND layer) ### **REFLEX Platform Contribution** Work across layers of the automation stack: * **REFLEX (UI/API layer)** User-facing APIs, ServiceNow integration, orchestration entry point * **MIND (Logic layer)** Intent validation, capacity management (VLANs, ASNs), workflow orchestration * **NSO (Execution layer)** Implements intended state across devices using service-driven configuration ### **Network & Service Modeling** * Translate **business intent into network configurations**, including: BGP/MPLS L3VPN / EVPN VRFs, VLANs, interface provisioning * Automate **multi-cloud connectivity** across: AWS, Azure, GCP Data centers and colocation facilities ### **Software Engineering Practices** * Drive **high-quality engineering standards**: Unit testing (**pytest**) Integration testing (**Robot Framework**) * Chip in to: CI/CD pipelines (GitLab) Containerized deployments (Docker) * Promote: Code reuse Observability Secure, scalable design **Competencies (Aligned to Lead IC Expectations)** -------------------------------------------------- ### **Technical Excellence** * Hands-on authority in **Cisco NSO, MAAPI, and Python** * Drives improvements in: Scalability Resilience Observability * Guides team-level architecture decisions using domain expertise ### **Customer Focus** * Builds systems aligned with **real-world usage and operational needs** * Takes ownership of issues impacting service delivery * Uses **feedback and operational data** to continuously improve automation ### **Risk Management** * Builds **secure, resilient automation systems** * Evaluates trade-offs in: Architecture Network design Service modeling * Ensures safe and reliable service deployment at scale ### **Leadership** * Leads through **hands-on engineering and technical influence** * Mentors team members and raises engineering capability * Drives consistency, quality, and reuse across solutions ### **Analytical Thinking** * Uses **data-driven approaches** to validate design assumptions * Improves systems through: Measurement Experimentation Iteration ### **Adaptability** * Challenges legacy approaches and introduces improved methods * Drives continuous improvement across platforms and practices * Invests in personal and team-level technical growth ### **Communication** * Clearly articulates: Architecture decisions Design trade-offs Technical strategy * Bridges communication between **technical and non-technical collaborators** **Required Skills & Experience** -------------------------------- ### **Core Technical Skills** * **Cisco NSO (Authority)** Strong **MAAPI experience (mandatory)** Template-less service design YANG modelling * **Python (advanced)** Automation frameworks Testing (pytest, Robot) ### **Networking Expertise** * Service Provider Networking: **BGP/MPLS, EVPN** * Platforms: Cisco IOS-XR (ASR9K, NCS) Cisco NX-OS (Nexus 9K) Arista EOS ### **Automation & Tools** * REST APIs / RESTCONF * GitLab CI/CD * Linux * Docker ### **Cloud & Infrastructure** * AWS (EC2, S3, networking fundamentals) * Multi-cloud networking concepts **What You’ll Deliver** ----------------------- * Fully automated **intent-based network services** * Scalable **multi-cloud connectivity automation** * Reduced provisioning time from **weeks to minutes** * Production-grade network automation used across global infrastructure **Summary** ----------- This is a **senior leadership role for a highly technical NSO guide** who: * Specialises in **MAAPI-based service development** * Understands **service provider-grade networks at scale** * Can **architect and deliver end-to-end automation platforms** * Drives engineering perfection through **hands-on leadership** **Career Stage:** Manager **London Stock Exchange Group (LSEG) Information:** Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you. LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. Our purpose is the foundation on which our culture is built. Our values of **Integrity, Partnership**, **Excellence** and **Change** underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions. Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. We are proud to be an equal opportunities employer. 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