Junior ION SME Support

Posted 16 Days Ago
Be an Early Applicant
London, England
Hybrid
Junior
Information Technology • Consulting
The Role
Provide L3 support for ION and e-trading platforms, maintain production and disaster recovery environments, and enhance system performance.
Summary Generated by Built In
About the Role
We are looking for a Junior ION SME to join a high-performing technology team responsible for the support and continuous improvement of electronic trading platforms for Fixed Income. This role offers a unique opportunity to work at the heart of live trading systems in a fast-paced environment, maintaining mission-critical platforms and driving technical excellence across the e-trading landscape.

Key Responsibilities
Provide L3 support for ION and e-trading platforms used across Fixed Income desks (trading, sales, and back office).
Oversee production trade flows, from market execution to downstream systems and post-trade processes.
Maintain and configure production (PRD) and disaster recovery (DR) environments, ensuring stability and availability.
Identify and implement process enhancements to improve system performance and user experience.
Coordinate and execute platform changes across proprietary systems and third-party components.
Collaborate with technical and business stakeholders to ensure seamless service delivery and operational efficiency.

Required Experience
Proven experience supporting electronic trading environments, ideally with ION Trading platforms.
Solid understanding of Fixed Income products (Rates, Credit, Swaps, etc.).
Familiarity with the end-to-end trade lifecycle — quoting, execution, confirmation, settlement, and valuation.
Strong technical knowledge of Linux, Sybase, TCL, and shell scripting.
Intermediate knowledge of SQL, Excel, and VBA.
Understanding of market connectivity and trading protocols (Tradeweb, MarketAxess, Bloomberg TOMS, MarkitWire, etc.).

Desirable Skills
University degree in Computer Science or a related field.
Experience using JIRA and participating in testing or continuous integration environments.
Analytical mindset with a proactive approach to troubleshooting.
Strong communication skills and ability to work collaboratively under pressure.

Key Competencies
Problem Solving & Delivery Focus – ownership, accountability, and attention to detail.
Client Orientation – understanding business needs and delivering high-quality support.
Collaboration & Communication – working effectively with cross-functional teams.
Ethics & Conduct – acting with integrity, diligence, and professionalism at all times.

Why Join
Work within a cutting-edge trading technology environment in a global financial institution.
Gain exposure to high-impact trading systems and complex market infrastructures.
Join a collaborative, high-performance culture that values innovation, learning, and ownership.



As an employer, MARGO offers equal employment opportunities regardless of gender, ethnicity, religion, sexual orientation, social status, disability, or age. MARGO is committed to fostering an inclusive work environment that reflects the diversity of its teams, and several actions are taken daily to achieve this!

Top Skills

Excel
Ion
Linux
Shell Scripting
SQL
Sybase
Tcl
VBA
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The Company
London
358 Employees
Year Founded: 2005

What We Do

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

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