Intern - Software Engineer

Programme starts: June 2027

Duration: 12 Weeks

Please review all the internship opportunities and make one application 

Our Software Engineer Summer Internship has been crafted so that you can understand what a career in the Post Trade Solutions (PTS) engineering team at LSEG would really 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 Core Technology Team, part of the Post Trade Engineering division based in our 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 Computer Science, Engineering, or any other relevant tech field. 

Internship Summary  

The Core Technology team creates the systems that deliver the optimisation services to clients. It is this team’s responsibility to design and build systems that permit financial market participants to securely provide risk and trade data to the company, to deliver that data to the optimisation services developed by the financial engineers, and to return the output of those computations safely back to the participants in a timely manner. In addition, the systems should provide feedback to the clients to help them understand the results as well as how they can modify their parameters and data to gain improvements in the future. Our systems live in the cloud, hosted by AWS, and leverage lambdas, EC2, RDS, and Redshift. 

The successful candidate will work as part of a team of 5-10 engineers to build and research improvements to the applications & environment. They will work directly with the Product Development team to enhance the services based on feedback from clients and analysis of runs as well as on strategic projects.  

Examples of possible projects, which involve writing software in python, include: 

• Designing and building a new workflow to run data quality (DQ) checks on financial data submitted by the clients 

• Collaborate with the Analytics team to leverage their pricing algorithms in our DQ checks 

• Building the internal portal screens used by the Product team to perform the optimisations 

• Implement the code providing connectivity to external booking systems, trade stores, etc. 

• Enhance our task queueing system to improve resource utilisation 

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.    

• Solid understanding of python for executable & repeatable programs (as opposed to data analytics). Affinity to PyData stack is preferred. 

• 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.  

• Familiarity with UNIX command line 

• Some experience with AWS and/or frontend development is a plus 

• Ideal candidates will have the rights to work in the London or New York City 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.

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