About the Role

As a Senior Software Engineer, you will play a key role in designing, building and optimising data‑driven solutions that power LSEG’s strategic platforms. You will work in a collaborative engineering environment, contributing to high‑impact initiatives across our data ecosystem. This role is ideal for someone who thrives in complex, modern data platforms and enjoys driving technical excellence.

What You Will Do

• Design, implement and enhance scalable data solutions using Data Lake technologies (ideally Delta).
• Build and maintain Change Data Feed pipelines to ensure real‑time data accuracy and reliability.
• Develop and support mirroring capabilities for data replication and consistency across environments.
• Engineer modern cloud‑native services using Azure Kubernetes Service (AKS).
• Work with event‑driven architectures, including ingestion, orchestration and processing layers.
• Contribute to solutions built on Microsoft Fabric, integrating data, analytics and governance capabilities.
• Collaborate closely with cross‑functional teams across Engineering, Architecture and Product to enable seamless solution delivery.
• Champion clean code, best practices, automation, CI/CD, observability, and reliability.
• Participate in technical discussions, peer reviews, and decision‑making processes to shape engineering standards.

What You Bring

• Deep understanding of Data Lake architectures, including Delta Lake and optimisation strategies.
• Strong knowledge of Change Data Feed, mirroring, and real‑time data ingestion/processing patterns.
• Hands‑on capability with AKS and container‑based microservices.
• Practical experience with event‑driven systems (e.g., Event Hubs, Kafka, or similar).
• Familiarity with Microsoft Fabric, its data engineering components and integration patterns.
• Ability to solve complex technical problems and make pragmatic engineering decisions.
• Comfortable working autonomously while contributing to a collaborative team culture.
• Clear, concise communication and the ability to explain engineering concepts to diverse audiences.

Why Join Us

At LSEG, you will work on global platforms with real‑world impact. You’ll be part of an inclusive culture that values growth, innovation and continuous learning. We offer opportunities to develop your expertise and contribute to products used by thousands of customers worldwide.

Career Stage:

Senior Associate

Compensation Information:

LSEG is committed to offering competitive Compensation and Benefits. The anticipated annual gross base salary for this position is between zł203,800 - zł322,200. Please be aware base salary ranges may vary by geographic location. In addition to our offered base salary, this role is eligible for our Annual Bonus Plan (”bonus plan”). Target Bonus % will be commensurate with role level and posted career stage. Individual salary will be reflective of job-related knowledge, skills and equivalent experience.

Benefits Information:

LSEG roles (excluding internships) are typically eligible for inclusion in our LSEG Benefits program. To view the benefits available for the role you're applying for, please click here. This document provides a list of benefits by country. Simply click on the country where the role is based to view the relevant details. If you have specific questions or would like further details, these can be discussed during your interview.

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.

Location: POL-Gdynia-3T Office Park, Tower C

Time Type: Full time