Jobs and Careers
SI
(Senior) Backend Developer
SIX GroupPolandfull_timeVerifiedPosted 26 Sept 2025
About the role
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<p align="center"><span><span>SIX drives the transformation of financial markets.</span></span></p>
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<p align="center"><span><span>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.</span></span></p>
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<h1 align="center"><span><b> </b><b><span>(Senior) Backend Developer</span></b> </span></h1>
<p align="center"><span><span>Warsaw</span><span> |</span><span> Working from home up to 40% possible</span><span> | Reference</span><span> 7280</span></span></p>
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<p><p>The SIX Central IT Software Engineering team specializes in designing, developing, and continuously optimizing custom applications and integrated solutions using public cloud technologies. We leverage agile methodologies and cross-functional collaboration to deliver robust, scalable, and user-centric applications tailored specifically to meet diverse business requirements. Our expertise ensures high-quality software development with a strong focus on innovation, reliability, and customer satisfaction. </p>
<p>As a (Senior) Backend Developer, you will play a crucial role in advancing our custom developed solutions, leveraging your strong software development expertise and proactive mindset. You will ensure our applications continually meet the evolving needs of internal customers, actively collaborating with stakeholders and team members to identify and implement optimizations. </p> </p>
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<h2><span><strong>What You Will Do</strong></span></h2>
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<li>Lead the design, development, implementation, and ongoing maintenance of diverse applications using modern technologies such as Java, Docker, GitLab, and Azure Cloud. </li>
<li>Drive collaboration with team members and internal customers to design, adapt, and optimize custom-developed cloud solutions for diverse projects, including robust public cloud services (IaaS/PaaS). </li>
<li>Mentor junior developers in web development, continuously enhancing technical skills and knowledge with a focus on innovation and emerging technologies. </li>
<li>Utilize and mentor others in various technologies while emphasizing on customer satisfaction and high-quality delivery. </li>
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<h2><span><strong>What You Bring</strong></span></h2>
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<li>Extensive experience with Java, Spring Boot </li>
<li>Nice-to-have experience with Angular </li>
<li>Autonomous, quality-focused work attitude, capable of leading and mentoring with a strong emphasis on customer satisfaction and high-quality delivery. </li>
<li>Good communication skills in English (both written and verbal). German language skills would be a plus, but not required. </li>
</ul> <p><span><span>If you have any questions, <b>check out our <a href="https://www.six-group.com/en/careers/faq.html" target="_blank">FAQ page</a></b> or call </span></span><span><span>Mateusz Kozielec</span></span><span><span> at </span></span><span><span>+41583998611</span></span><span><span>.</span></span></p>
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<p><span><span>For this vacancy we only accept direct applications.</span></span></p>
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<p><span><span>Diversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background. </span></span></p>
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