Intern - Quantitative Services

Programme starts: June 2026 

Duration: 12 Weeks

• Please review all the internship opportunities and make one application 

Our Quantitative Services Summer Internship Programme has been crafted so that you can understand what a career on the Quantitative Services team of Post Trade Solutions at LSEG would be like. As an intern, you play a part in the success of our organisation. 

This position is within the Quantitative Services team of the Post Trade Solutions division at LSEG based in London or Dublin.

The Quantitative Services team is responsible for the development of ORE, its dependent services, and implementation of ORE in major financial institutions to deliver transparent, state-of-the-art risk management. 

To be eligible, you should be in the penultimate year of your undergraduate or final year of an Undergraduate degree and plan to continue onto Masters for academic year 2026/27 studying Math, Physics, Financial Engineering or other quantitative fields. 

The successful candidate will work as part of a team of Quants to develop solutions for our risk analytics services. 

Internship Summary

• Contributing to the development of Open-Source Risk Engine (ORE). 
• Supporting the infrastructure for the IM Risk Generation (IMRG) service. 
• Pricing client portfolios and performing stress-testing and backtesting using ORE 
• Utilizing ORE to calculate risk (VaR, SIMM, etc.) on client portfolios 
• Translating client portfolios into the ORE XML format. 
• Collaborating with collateral management and risk teams to build financial applications 

What We Are Looking For:

We are passionate about recruiting people who are interested in pursuing a career within Financial Engineering and would like to learn about the full breadth of our business – and are interested in playing a part of our development, as it grows and diversifies.    

• Interest in Quantitative Finance, demonstrated through studies, projects or independent work 
• A good understanding of at least Python or C++ 
• Familiarity with Git, LaTex, is ideal but not essential 
• Having functional knowledge on stochastic models/SDEs, e.g. Ornstein-Uhlenbeck/Hull-White model, Black-Scholes model, etc. 
• Someone who can collaborate with others, using their communication skills in the process. 
• A curiosity for data and an ability to analyse information to draw conclusions and propose solutions.  
• Knowledge of financial derivatives and pricing techniques, e.g. finite difference, Monte Carlo Simulation, etc. 
• Ideal candidates will have the rights to work in London or Dublin without restrictions for the duration of the internship programme 

You will stand out to us if you can demonstrate and recognise that what you achieve is equally important as how you achieve it.  

Applications close:  23 November, we recommend an early application because we consider candidates on a rolling basis and may close applications early. 

Recruitment Process:

• The first stage of the recruitment process involves making an application and submitting your resume.  
• The next stage of the application process is an Immersive Online Assessment. The assessment is designed to give you an insight into what it’s like to work at LSEG 
• The third stage is a video interview where you will answer a series of questions using a strength-based-interview style 
• The fourth stage is completion of coding assessment, so we can understand your technical capabilities 
• The final stage is a half day assessment centre which involves several different types of exercises – further information is provided at the point of invite.  

Please review all the internship opportunities and make one application If you make more than one application, we will review your first application only. 

Please note, all our assessment centres are run virtually.    

Life At Lseg

We believe hybrid working makes more possible and recognise difference as a good thing. We want to set everyone up to bring their best self to work. Everyone will spend time with colleagues in the office (3 days), but you’ll be trusted to work flexibly, in a way that delivers excellence.   

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.