NetOps – Network Engineer Infrastructure & Cloud

London Stock Exchange Group; Paris; Sur place; EUR 70 000 - 100 000; Plein temps

Résumé du poste

London Stock Exchange Group seeks a Senior Network Engineer to design, deploy and maintain resilient, scalable network infrastructure for Post Trade services. You will collaborate with cloud, security, and operations teams to ensure high availability and compliance in a regulated environment.

You’ll influence system reliability by implementing automation, DR/BCP plans, and capacity management, while mentoring teammates and driving performance improvements across on-prem and cloud networks.

Qualifications

• Bachelor's degree in computer science or engineering, or equivalent experience.
• 5+ years as a Network Engineer/SRE or similar in regulated/high-availability settings.
• Experience designing large-scale multi-site networks and complex topologies.
• Hands-on with VMware, Cisco switches, network security, and cloud networking (IS-IS, VXLAN, BGP, EVPN).
• Proficient in scripting (Python, Bash) and automation (Ansible, Puppet, Chef).
• Familiarity with containers (Docker, Kubernetes) and cloud (AWS, Azure, Google).

Responsabilités

• Assess, design, and implement highly available network infrastructure.
• Plan capacity and troubleshoot network application products and services.
• Monitor and improve observability of network infrastructure.
• Lead DR/BCP planning and regular validation.
• Develop automation and reusable infrastructure components.
• Provide on-call support and incident response leadership.

Connaissances

Networking design

SRE/Network engineering

Cloud networking

Python

Bash

Automation

Network security

Monitoring/observability

Formation

Bachelor's degree in CS/Engineering

Equivalent experience

Outils

VMware

Cisco switches

Ansible

Puppet

Chef

Docker

Kubernetes

AWS

Azure

Google Cloud

Description du poste

Role Summary

Do you have a passion for technology? Do you want to make a difference, delivering IT infrastructure used by some of the biggest companies in the world and a critical player in the market infrastructure? We are looking for a skilled NetOps – Network engineer to join the LCH SA Infrastructure & Cloud Team that provides technical resources to Post Trade Business Services (a division of LSEG). Your role is vital in designing, deploying, and maintaining resilient, scalable, and highly available systems. Collaboration with infrastructure teams, operations, and partners will be crucial in ensuring efficient performance and availability of our critical environments.

Key responsibilities and accountabilities

• Implements, tunes, and conducts ongoing administration of infrastructure layer, including proposing application systems changes, better uses and improvements
• Improves the whole life cycle of services from inception and design, through deployment, operation, and refinement.
• Design, implement, and regularly validate Disaster Recovery (DR) and Business Continuity (BCP) strategies for network infrastructure, ensuring high availability, and compliance with RTO/RPO objectives.
• Manage and optimize network interconnect operations with cloud providers, telecom carriers, exchanges, and third-party partners, ensuring secure, resilient, and highly available connectivity
• Leads support services before they launch through activities such as system design consulting, developing features of the infrastructure platforms and frameworks, capacity planning, and launch reviews.
• Provides mentorship to other team members on handling availability and performance of critical services, on building automation to prevent problem recurrence, and on building automated responses for non-exceptional service conditions.
• Maintains services once they are live by measuring and monitoring availability, latency, and overall system health.
• Leads sustainable and efficient incident response.
• Scales systems sustainably through mechanisms like automation, evolving evolve systems by advocating for changes that improve reliability and velocity.
• Writes highly optimized and accurate code for LCH SA and LSEG products and solutions.
• Proactively continues to build and apply relevant domain knowledge that may relate to workflows, data pipelines, business policies, configurations and constraints.
• Supports essential processes while ensuring high quality standards are met.

What you’ll be doing

• Assess, plan, design, and implementation of the network infrastructure (DHCP/DNS/IPAM, Firewalls, Network, Load balancers, Time protocol, DNS, proxy) as a highly available and scalable infrastructure solutions to support our critical applications and services.
• Capacity planning and troubleshooting of the network applications products, infrastructure, and services.
• Monitoring and observability of the network applications products infrastructure.
• Source code management and development.
• Leverage testing environments using industry practices for pre-testing changes and proof of concept.
• Troubleshoot and resolve customer networking issues across the network (cloud & on-premises networks).
• On-call rotation shifts

You’ll bring

• Bachelor’s degree in computer science, Engineering, or a related field (or equivalent experience).
• Experience (at least 5 years) as a Network Engineer, SRE or similar role, with a focus on managing and maintaining Network infrastructure in regulated and or highly available environment.
• Experience with planning and designing large scale networks (e.g., multiple sites, multiple products, etc.)
• Experience with VMware, Cisco Switches, Network Security and Knowledge in many of the following Cloud Networking technologies: IS-IS, VXLAN, BGP, EVPN, Network Virtualization (at least 5 years).
• Experience on VMware technology (at least 2 years), Expertise in cloud AWS, Azure, Google technologies will be a plus (at least 3 years), Expertise (at least 3 years) in scripting languages (Python, Bash), and on automation/configuration management tools (Ansible, Puppet, Chef), Expertise in containerization technologies (Docker, Kubernetes) is advantageous, Experience on operating in a regulated environment with specific security constraints (at least 2 years).
• Experience on Systems Monitoring and Capacity Management (at least 5 years).
• Adheres to applicable risk control frameworks, policies and procedures.

About London Stock Exchange Group (LSEG)

LSEG’s vision is to be the most trusted authority in global financial markets. This is achieved through leading the world in providing access to capital, helping customers optimise capital resources and promoting trusted and open environments and services for investment.

LSEG is a diversified international exchange Group that sits at the heart of the world's financial community. The Group operates through four key business divisions: Capital Markets (broad range of international equity, bond and derivatives markets); Post Trade (post trade and risk management services); Global Technology Services (trading platforms and capital markets software); and Information Services (real-time and reference data products).

As a global business, LSEG relies on diversity of culture and thought to deliver on our goals. Therefore we seek hardworking, qualified employees in all our operations around the world−regardless of race, colour, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under country or local law.

LSEG makes reasonable accommodations for applicants and employees with disabilities.

If an accommodation is needed to participate in the job application or interview process, to perform crucial job functions, and/or to receive other benefits and privileges of employment, please contact us to request an accommodation.

Career Stage: Senior Associate

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. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law.

Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives.

Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.