Programme starts: June 2027

Duration: 12 Weeks 

Please review all the internship opportunities and make one application 

Our Finance Engineer Summer Internship Programme has been crafted so that you can understand what a career as a Financial Engineer at LSEG would be like. In the internship you will work on projects solving real problems and work as part of a team with experienced engineers. 

This position is within the Optimisation Strats Team within the Post Trade Engineering division and will be based in London Office 

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 2027/28 studying Maths, Physics, Engineering, Computer Science or other quantitative fields.  

Internship Summary  

The Strats team is responsible for designing, building, implementing and maintaining the algorithms at the heart of our services. This typically involves working on models for linear or convex optimisation problems and interpreting the solution of those problems as a set of financial transactions that should be executed to improve some aspect of a derivatives portfolio. It also involves implementing all the data pre-processing logic as well as the postprocessing validation checks and proposal generations, which require the handling of large data sets. 

The successful candidate will work as part of a small team of 4-6 financial engineers to design and implement improvements to our optimisation services. They will work directly with the Product Development team to enhance the product, based on feedback from clients and analysis of runs, as well as on strategic projects.  

Examples of possible projects include: 

• Developing a new scaling scheme to improve reliability and performance 

• Introducing a mix integer model to achieve rounded solutions 

• Investigating how sensitive the solution is to small changes in the data to understand which constraints we should relax for maximum impact. 

• Refactoring some parts of the code to share functionality and business logic across assets 

• Improving the runtime performance by investigating and adding heuristics to reduce the data set and solution search space. 

• Developing new functionality to better validate incoming client data prior to optimisation.   

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.    

• Experience with python and ideally familiarity with pandas and numpy 

• A strong mathematical background (numerical methods, linear algebra, probability & statistics) 

• Basic understanding of linear and/or mixed integer programming and convex optimisation 

• Excellent problem-solving skills 

• Knowledge of basic financial products is a plus 

• Familiarity with UNIX is desired but not required 

• Ideal candidates will have the rights to work in the New York or London 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: 30th 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 second stage is completing Technical and Coding Assessment. This technical assessment is designed to evaluate your coding ability, logical reasoning and problem-solving skills.

• The next stage of the application process is an untimed 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 final stage is a virtual 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.  

Career Stage:

London Stock Exchange Group (LSEG) Information:

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.