Job Description

Network Engineer – Trading & Electronic Trading Infrastructure
Join MARGO in the UK (London) – Perm & Contracting Opportunities

MARGO is a tech-native consultancy delivering high value-added IT expertise to complex financial markets environments.We work on mission-critical trading and electronic trading infrastructures where performance, latency, resilience and automation are key success factors. Our consultants operate close to trading, application and infrastructure teams to design, transform and operate high-performance platforms.Joining MARGO means contributing to technically demanding transformation initiatives while benefiting from a human-sized structure, close follow-up and tailored career paths.
Business Context
You will join a trading and electronic trading infrastructure environment undergoing a significant network transformation.After years of organic growth, the network architecture is being rethought with fresh investment and a strong focus on:·        latency-sensitive electronic trading systems·        scalability and resilience·        automation and infrastructure-as-code principlesThe role sits at the intersection of network engineering, production operations and application proximity, with direct interaction with trading and development teams.

We are looking for a Network Engineer to contribute to the redesign, automation and operation of trading and corporate network infrastructures.The role combines architecture, hands-on engineering and production ownership. It is suited for engineers who want to work close to trading environments while participating in meaningful technical transformation initiatives. Key Responsibilities
Architecture & Transformation·        Contribute to the re-architecture of trading and electronic trading network infrastructure to improve latency, scalability and resilience·        Design and deploy network solutions following network-as-code principles·        Produce and maintain high-level and low-level designs (HLD / LLD)·        Participate in technical discussions around network standards and evolution
Automation & Engineering·        Contribute to network automation initiatives using tools such as Ansible·        Help standardise configurations, deployments and operational changes·        Work closely with application and development teams to align infrastructure with system requirements·        Support integration with market connectivity and broker networks
Production & Operations·        Participate in production support for trading network environments·        Contribute to troubleshooting and root-cause analysis in production·        Perform packet-level analysis to diagnose latency, packet loss or connectivity issues·        Support monitoring, capacity planning and incident response activities·        Help ensure high availability and operational stability of critical environments
Collaboration & Communication·        Act as a point of contact between infrastructure, trading and application teams·        Capture business and application needs and translate them into technical solutions·        Collaborate with global teams and external vendors on implementations and upgrades·        Contribute to knowledge sharing and operational documentation
Technical Environment
Core Technologies·        Network engineering in low-latency and high-availability environments·        Arista network equipment and architectures·        Network automation (Ansible)·        Routing protocols: OSPF, BGP·        IP transmission: Unicast and Multicast·        Direct market connectivity and broker integrations Valued Technical Exposure·        Firewalls, proxies and load balancers (e.g. LTM, Web Gateways)·        Monitoring and observability tools·        Capacity planning and performance optimisation·        Large-scale trading or electronic trading infrastructures
Required Experience & Skills
Essential·        Experience in trading or electronic trading network environments·        Hands-on expertise with network infrastructure and routing·        Exposure to network automation or infrastructure-as-code practices·        Strong understanding of IP networking, routing and multicast·        Troubleshooting skills including packet-level analysis·        Experience working on production-critical systems·        Ability to work close to application and business teams·        Strong ownership and communication mindset
Valued (but not restrictive)·        Experience with Arista network environments·        Exposure to infrastructure transformation programmes·        Familiarity with firewalls, proxies or load balancers·        CCIE certification or equivalent hands-on experience
Why Join MARGO
·        Access to high-impact trading and electronic trading infrastructure projects·        Opportunity to contribute to architectural and automation initiatives·        Roles combining engineering, production and application proximity·        Close collaboration with trading and development teams·        Human-sized consultancy with strong technical standards and long-term focus Please note - We do not offer visa sponsorship for this position.
Interested? Motivated? Apply on our website or at staff.uk@margo.com

About MARGO

More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish.

For more than 17 years, we have been carrying out missions of the highest technical complexity, enabling the digital acceleration of our clients, while ensuring a perpetual intellectual and collective stimulation for all our talents.

At MARGO it's Consultant First.

By joining MARGO, your talent today will remain relevant tomorrow. We bring you into the group not only for what you are today but for the potential you wish to develop.

At MARGO, you will be able to build your own path to excellence within our teams and our missions. Tailor-made to serve your ambition and to match your talent.

Today, Margo has over 400 employees in 8 entities:

► MARGO Trading Systems: our full stack development offer in market finance

► MARGO Capital Markets: our business offer in market finance

► MARGO Analytics: our expertise in data science and data engineering

► A CAPELLA Consulting: our business offer dedicated to insurance

► CODE BUSTERS: our community of developers

► DELIVERED by MARGO: our 100% remote full stack development entity

► MARGO UK: expertise in complex coding and application support on the English market.

► MARGO Poland: expertise in complex coding in retail Banking on the Polish market.

Industry

IT & Software

Company Size

201-500 employees

Headquarters

Courbevoie, FR

Year Founded

2005

Website

margo.com

Social Media