Millennium
Reference Data Operations Specialist
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Reference Data Operations Specialist
Reference Data Operations Specialist
About the Role
The Operations & Middle Office department at Millennium seeks a driven and thorough Reference Data Operations Specialist to join the Data Operations team, based in London. This team operates within Control and is responsible for overseeing the firm’s Global Security Master via data quality measures while managing processes for onboarding new securities and attributes.
Ideal candidates will be self-starters with a keen eye for detail, a background in financial services—particularly in Security Master & Reference Data—and a passion for initiating process improvements, efficiency, and real-time problem-solving.
Principal Responsibilities
- Ensuring the accurate creation and maintenance of all tradable securities in Millennium’s Global Security Master
- Overseeing data quality control checks through system and business validations
- Monitoring Corporate Actions and Market Data events to proactively prevent disruptions in downstream processes
- Liaising and resolving ad hoc issues raised by internal (front-, middle- and back-office) and external (data vendors) stakeholders
- Analyzing datasets to work with Development teams on requirements, designing, and implementing new processes and workflows for the Security Master
- Managing a small team in EMEA & APAC and collaborating globally with regional leads, including:
- Stakeholder management across Trading, Risk, and Operations
- Serving as an escalation point for complex issues
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Qualifications & Skills Required
Experience & Background
- 8+ years in financial services, preferably at a broker-dealer or asset management firm, with expertise in Security Master / Reference Data
- Proven ability to lead a small team and collaborate across regions/time zones
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Specialist Knowledge
- Strong working knowledge of financial instruments, including:
- Equities
- Fixed income
- Derivatives
- Experience with data vendors, including:
- Bloomberg, Refinitiv (LSEG), Markit (S&P Global), ICE, and others
Technical Proficiencies
- Ability to implement and maintain new systems, procedures, and controls
- Analytical skills for reviewing/validating datasets to identify gaps and driving requirements
- Fundamental SQL query experience and proficient in MS Excel
Soft Skills
- Strong communication with senior stakeholders, including interpersonal and stakeholder management expertise
- Ability to meet deadlines and thrive in a team-driven environment
- Self-directed, diligent problem-solver, motivated to contribute to Millennium’s reputation and success
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location