Real-Time Software Engineer - Early Career

LSEG; St. Louis (MO); On-site; USD 90,000 - 120,000; Full time

Job summary

London Stock Exchange Group (LSEG) is seeking a Software Engineer to join our development team to build high-quality software supporting critical business capabilities. Open to recent graduates or engineers up to 2 years of experience, with interest in AI-assisted engineering practices.

You will design, develop, test, and maintain software, collaborate across teams, and leverage AI tools to improve productivity and quality.

Qualifications

• Bachelor’s degree in CS/Software Engineering/CE or related field or equivalent.
• 2+ years of professional software development experience outside internships.
• Proficiency in at least one language: C++, Python, Java or C#.
• Strong fundamentals: OOP, data structures, algorithms, Git, testing, debugging.
• Experience using AI-assisted development tools for software tasks.

Responsibilities

• Design, develop, test, and maintain software applications and services.
• Collaborate with product owners, developers, architects, and stakeholders to deliver value.
• Write clean, well-tested code and participate in code reviews.
• Troubleshoot defects, performance issues, and production problems.
• Utilize AI-assisted tools to boost productivity and software quality.
• Contribute to automation, testing, and deployment improvements.
• Learn new technologies as project needs evolve.

Skills

Programming languages: C++, Python, or

Object-oriented programming

Data structures & algorithms

Git version control

AI-assisted development tools

Communication skills

Collaboration in teams

Education

Bachelor’s degree in CS/Software Engineering/CE or related field

Tools

GitHub Copilot

Cursor

Claude Code

OpenAI Codex

Windsurf

Job description

About the Role

We are seeking a Software Engineer to join our development team and help build high-quality software solutions that support critical business capabilities. This role is ideal for a recent graduate or an engineer with up to two years of professional experience who is passionate about software development, enjoys solving complex problems, and embraces modern AI-assisted engineering practices.

We value strong engineering fundamentals, curiosity, and a growth mindset more than expertise in any specific programming language. Successful candidates may have experience in C++, Python, Java, or C# and should be comfortable learning new technologies as business needs evolve.

Responsibilities

• Design, develop, test, and maintain software applications and services.
• Collaborate with product owners, developers, architects, and stakeholders to deliver business value.
• Write clean, maintainable, and well-tested code.
• Participate in code reviews and design discussions.
• Troubleshoot defects, performance issues, and production problems.
• Utilize modern AI-assisted and agentic development tools to improve engineering productivity and software quality.
• Contribute to continuous improvement of development practices, automation, testing, and deployment processes.
• Learn new technologies and programming languages as required by project needs.

Required Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, or a related technical field, or equivalent practical experience.
• At least 2+ years of professional software development experience outside internship experience
• Demonstrated proficiency in at least one of the following languages: C++/ Python/Java /C#
• Understanding of software engineering fundamentals including: Object-oriented programmingData structures and algorithmsVersion control (Git)Software testing principlesDebugging and problem solving
• Experience using AI-assisted development tools for software engineering tasks.
• Strong written and verbal communication skills.
• Ability to work effectively in a collaborative team environment.

Preferred Qualifications

• Internship, co-op, research, or personal project experience demonstrating software development skills.
• Experience with agentic software development tools such as GitHub Copilot, Cursor, Claude Code, OpenAI Codex, Windsurf, or similar platforms.
• Experience developing applications, services, APIs, or automation solutions.
• Familiarity with cloud platforms such as Azure, AWS, or Google Cloud.
• Experience with CI/CD pipelines and modern development practices.
• Exposure to Agile software development methodologies.

What We’re Looking For

We are looking for engineers who:

• Learn quickly and adapt to new technologies.
• Use AI and agentic development tools as force multipliers while maintaining accountability for code quality.
• Demonstrate strong analytical and problem-solving skills.
• Take ownership of their work and actively seek feedback.
• Collaborate effectively with teammates and stakeholders.
• Show curiosity, initiative, and a passion for continuous improvement.

Interview Focus Areas

Candidates will be evaluated on:

• Software engineering fundamentals rather than language-specific expertise.
• Practical coding ability in their language of choice.
• Problem-solving and debugging approach.
• Ability to leverage AI-assisted development tools effectively.
• Communication and collaboration skills.
• Learning agility and growth potential.

Career Stage:

Senior Associate

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.