Trading Reference Data Specialist

Susquehanna International Group; Dublin; On-site; EUR 60,000 - 90,000; Full time

Job summary

Susquehanna International Group is seeking a Production Support/Reference Data specialist in Ireland to manage and support reference data across trading systems. You will act as a first line of support, ensure data accuracy, and coordinate data changes with traders, quants, and developers.

The role requires 5+ years in financial services or reference data, strong knowledge of financial instruments, and experience with SQL/Python and market data vendors.

Qualifications

• At least 5 years in financial services, trading support, or reference data roles.
• Strong understanding of financial instruments and trading workflows.
• Experience with SQL and/or Python, and relational databases.
• Ability to multi-task and manage high data-change volumes.
• Experience with market data vendors (Bloomberg, exchanges).
• Strong problem-solving and cross-team communication.

Responsibilities

• Act as first line support for issues related to trading reference data.
• Investigate and resolve data issues impacting trading systems.
• Maintain data quality across environments.
• Onboard new trading venues, brokers, and instruments.
• Coordinate updates with development teams and ensure smooth rollout.
• Communicate data impacts to stakeholders.

Skills

Financial data

SQL

Python

Data analysis

Communication

Multitasking

Stakeholder management

Problem-solving

Tools

Relational databases

Job description

Overview

You will join the Static Data team within the Enterprise Software Systems (ESS) group, responsible for managing and supporting the reference data used by Susquehanna’s trading systems. This is a production-facing role focused on ensuring the accuracy, availability, and integrity of trading data across front office, post‑trade, and quantitative systems. A key part of the role is acting as a first line of support for trading‑related data issues, requiring a strong understanding of how reference data flows through systems and impacts trading activity. You will work closely with traders, developers, quants, and operations to resolve issues, onboard new data, and ensure systems remain aligned with market and exchange changes.

Key Responsibilities

Production Support & Data Ownership

• Act as first line support for issues related to trading reference data
• Investigate and resolve data issues impacting trading and downstream systems
• Take ownership of data quality and ensure accuracy across all environments
• Understand and manage the impact of data changes on trading workflows
• Reference Data Management
• Maintain instrument definitions, pricing data, and corporate actions
• Validate and monitor data from external vendors (e.g. Bloomberg, exchanges)
• Ensure consistency and correctness of data across systems

Data Onboarding & Change Management

• Onboard new trading venues, brokers, and financial instruments
• Analyse vendor and exchange changes (e.g. symbology, tick sizes, trading rules)
• Coordinate updates with development teams and ensure smooth rollout

Stakeholder Interaction

• Work closely with traders, operations, and developers to support trading activity
• Communicate clearly on issues, changes, and data impacts
• Provide guidance on reference data behaviour and system expectations

What We're Looking For

• At least 5 years of experience in financial services, trading support, or reference data roles
• Strong understanding of financial instruments and trading workflows
• Working knowledge of SQL &/or python, relational databases and querying/updating database tables.
• Ability to multi-task, meet deadlines, familiar with high volumes of data changes and prioritize workloads.
• Experience working with market data vendors (Bloomberg, Exchanges, etc.)
• Strong problem‑solving skills and ability to operate in a production environment
• Excellent communication skills and ability to work across teams

Why Join

• Work directly with front office trading systems
• Own and support business‑critical data
• Gain exposure to global markets, exchanges, and trading workflows
• Be part of a team that sits at the intersection of trading, technology, and data

Susquehanna is an equal opportunity employer. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruitment process, please contact us.