Market Data Analyst

ISS; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading financial technology firm in Greater London is seeking a Market Data Analyst to evaluate and onboard cross‑asset class data feeds. Responsibilities include onboarding new market venues and maintaining a reference database, requiring a degree in finance or mathematics and a minimum of 3 years' experience. Ideal candidates will have strong analytical skills, proficiency in Microsoft Excel, and scripting experience in SQL and Python. This role supports innovation within the financial market data sector.

Benefits

Opportunities for professional growth

Supportive work environment

Qualifications

• Minimum 3 years’ experience in finance or data analysis.
• Ability to work with large datasets like Level 2 order-book data.
• Scripting in SQL and Python with knowledge of object-oriented programming.

Responsibilities

• Onboard new market venues to the platform.
• Maintain and enrich market metadata reference database.
• Produce models on market microstructure changes.

Skills

Financial market data analysis

Data manipulation

Analytical skills

Communication skills

SQL

Microsoft Excel

Good communication skills

Understanding of data modelling techniques

Education

Degree in Finance, Mathematics or Similar

Tools

Power BI

Tableau

Jupyter

Job description

Market Data Analyst – London

At ISS STOXX LiquidMetrix, our workforce is the driving force behind our success. We prioritize attracting and nurturing top talent within our industry, providing them with the tools, support, and opportunities necessary to flourish in their careers, while also prioritizing their health, financial stability, and personal growth.

As a Market Data Analyst, you will help evaluate and onboard cross‑asset class data feeds for our Venue Analytics, Transaction Cost Analysis (TCA) and Trade Surveillance products. You will work closely with expert Product Data and Development teams to deliver Proof of Concepts (POCs) that help guide project roadmaps and enrich the product offering for clients including investment banks, brokers, wealth/asset managers and exchanges.

Key Responsibilities

Market Data Expansion

• Work with teams to onboard new market venues to the platform, including Fixed Income, Derivatives, Equities/ETFs, FX and Crypto
• Maintain and enrich an extensive reference database, covering global cross‑asset market metadata, instrument listings and company fundamentals
• Help evolve data QA procedures to deliver high-quality, robust information to downstream applications
• Work with the Application Support team to recover from data delivery and processing issues

Feed Management

• Liaise with vendor network to identify mandatory feed changes and the required implementation plan for existing feeds
• Research upcoming market microstructure changes and help produce models on how the business can benefit
• Undertake analyses of data and construct accurate and insightful reporting
• Provide clear lines of communication to stakeholders on feed projects and product development

Analytics & Support

• Understand and help develop deeper analytics across asset classes, including differing approaches to TCA and instrument‑level performance measurements
• Respond to client requests for new market coverage

What you bring to ISS STOXX

• Minimum 3 years’ experience
• Educated to degree level in Finance, Mathematics or a similar quantitative discipline
• Proven experience working with financial market data and/or referential data and an interest in further developing a career in finance
• Ability to work with, manipulate and analyse large datasets (such as Level 2 and Level 3 order‑book data)
• Highly proficient with Microsoft Excel, including macros, pivot tables, functions & charts. Experience with analytical tools such as Power BI, Tableau, Jupyter, etc., as well as REST APIs is desirable.
• Scripting: SQL (intermediate as a minimum), Python. Experience in object‑oriented programming is a bonus.
• Excellent analytical skills and an ability to understand technically complex problems
• Good communication and written skills, and the ability to build strong professional relationships at all levels, with both internal and external parties
• Proven ability to work well under pressure and adapt to changing priorities and complex challenges
• An understanding of data modelling techniques (both supervised and unsupervised), applying goodness‑of‑fit measures and AI, highly desirable

What You Can Expect from Us

At ISS STOXX, our people are our driving force. We are committed to building a culture that values diverse skills, perspectives, and experiences. We hire the best talent in our industry and empower them with the resources, support, and opportunities to grow—professionally and personally.

Together, we foster an environment that fuels creativity, drives innovation, and shapes our future success.

About ISS STOXX

ISS STOXX GmbH is a leading provider of research and technology solutions for the financial market. Established in 1985, we offer top‑notch benchmark and custom indices globally, helping clients identify investment opportunities and manage portfolio risks. Our services cover corporate governance, sustainability, cyber risk, and fund intelligence. Majority‑owned by Deutsche Börse Group, ISS STOXX has over 3,400 professionals in 33 locations worldwide, serving around 6,400 clients, including institutional investors and companies focused on ESG, cyber, and governance risk.

Specifically, ISS LiquidMetrix provides a wide range of offerings, including Transaction Cost Analysis (TCA), execution quality, market abuse, and pre‑trade analysis services across every public order and trade executed on European venues. Clients include sell sides, buy sides, exchanges, and regulators that require actionable analysis, reports, compliance tools, and global coverage.

Visit our website: https://www.issgovernance.com

View additional open roles: https://www.issgovernance.com/join-the-iss-team/

Institutional Shareholder Services (“ISS”) is committed to fostering, cultivating, and preserving a culture of diversity and inclusion. It is our policy to prohibit discrimination or harassment against any applicant or employee on the basis of race, color, ethnicity, creed, religion, sex, age, height, weight, citizenship status, national origin, social origin, sexual orientation, gender identity or gender expression, pregnancy status, marital status, familial status, mental or physical disability, veteran status, military service or status, genetic information, or any other characteristic protected by law (referred to as “protected status”). All activities including, but not limited to, recruiting and hiring, recruitment advertising, promotions, performance appraisals, training, job assignments, compensation, demotions, transfers, terminations (including layoffs), benefits, and other terms, conditions, and privileges of employment are and will be administered on a non‑discriminatory basis, consistent with all applicable federal, state, and local requirements.