Senior Software Engineer

LSEG; Gdynia; On-site; PLN 203,800 - 322,200; Full time

Job summary

LSEG in Gdynia is seeking a Senior Software Engineer to design, build and optimise data‑driven solutions powering strategic platforms. You will work in a collaborative team, shaping engineering standards and delivering scalable data pipelines using modern cloud and data technologies.

Bring strong OO and functional programming skills, solid SQL and Spark SQL experience, and the ability to work autonomously while communicating clearly across teams.

Qualifications

• Experience designing and building data-driven solutions in modern data platforms.
• Strong coding skills with OO and functional patterns.
• Hands-on SQL, Spark SQL and data-engineering patterns.

Responsibilities

• Design and enhance scalable data solutions using Data Lake technologies.
• Utilise Azure, containers, dev containers and IaC for deployments.
• Build cloud-native services with AKS and Microsoft Fabric integration.
• Collaborate with cross-functional teams to enable delivery.
• Champion clean code, CI/CD, observability and reliability.

Skills

OOP

Functional patterns

SQL

Spark SQL

Relational databases

Problem solving

Autonomous working

Communication

Tools

Azure

AKS

Containers

Dev containers

IaC

Data Lake technologies

Microsoft Fabric

CI/CD tooling

Job description

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.
• Work with modern infrastructure tooling (Azure, containers, dev containers, IaC) to support fast, reliable deployments.
• Engineer modern cloud‑native services using Azure Kubernetes Service (AKS).
• 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, standard methodologies, automation, CI/CD, observability, and reliability.
• Participate in technical discussions, peer reviews, and decision‑making processes to shape engineering standards.

What You Bring

• Strong programming expertise with the ability to work comfortably with object‑oriented and functional patterns.
• Good understanding of relational databases.
• Hands‑on capability with SQL, Spark SQL and core data‑engineering 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.

Compensation

LSEG is committed to offering competitive Compensation and Benefits. The anticipated annual gross base salary for this position is between 203,800 zł - 322,200 zł. 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

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.

Career Stage

Senior Associate

Equal Opportunity Employer

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.