SIX drives the transformation of financial markets.
What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.
(Senior) Java Full-Stack Developer
Warsaw | working from home up to 40% | Reference 7411
Are you a results-driven software engineer passionate about building mission-critical systems in the financial industry? Do you thrive in an environment that values innovation, resilience, and systematic problem-solving? If so, we’re looking for you!
As part of the Stock Exchange Engineering team, you will play a pivotal role in driving the back-end and front end development of our products. We're seeking top-tier talent to join our growing team and help shape the future of financial markets infrastructure.
What You Will Do
- Design and develop high-performance Java-based end-to-end applications with external-facing interfaces, ensuring seamless integration with primary and secondary market trading systems, while working across the full technology stack including frontend, backend and database layers.
- Ensure compliance with regulatory standards and internal security policies, maintaining system resilience and operational reliability.
- Translate business requirements into scalable, best-in-class solutions, following Java development best practices and financial market regulations
- Support and maintain mission-critical financial systems used by leading global financial institutions, including participation in on-call duties, while working across the full technology stack
- Build and maintain GitOps-based CI/CD pipelines with Jenkins for automated delivery, release support, and incident handling, using Bash scripting to ensure scalable and resilient operations
- Collaborate in an agile, cross-functional team comprising developers, testers, product owners, and business stakeholders, leveraging frameworks like SCRUM and SAFe
What You Bring
- Extensive Experience in High-Performance Software Engineering
You have 10+ years of hands-on experience building applications using Java (Java 8+, SpringBoot, JPA/Hibernate). Bonus points if you have worked with Angular and modern front-end frameworks to deliver seamless user experiences - Advanced Cloud Expertise: Proven ability to optimize data workflows for reliability and scalability
- Proven experience with containerization technologies and orchestration platforms, including Kubernetes and OpenShift
- Expertise in object-oriented design and event-driven architecture, with a solid understanding of messaging systems and database optimization or financial markets infrastructure is highly advantageous in advancing the organization’s core objectives.
- Strategic Problem-Solver with a Resilience Mindset
You’re a strategic thinker with a focus on quality and resilience. You have the systematic thinking skills to troubleshoot complex systems and ensure secure, scalable solutions that stand the test of time
If you have any questions, check out our FAQ page or call Beata Czyzewska at +48 22 104 6571 / +41 58 399 9800 / +34 91 330 51 49.
For this vacancy we only accept direct applications.
Diversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background.
What We Offer

Flexible Work Models
We trust our employees and offer a work environment that is well-balanced, productive and fosters success.

Personal Development
You will benefit from a culture of continuous learning and feedback. Your personal growth is supported through an extensive learning offering.

Agile Working Methods
Whether through scrum or design thinking,
we solve exciting tasks together in teams.