Senior Software Engineer, Core Banking (80-100%)

About Sygnum

Sygnum is a global digital asset banking group, founded on Swiss and Singapore heritage. We empower professional and institutional investors, banks, corporates and DLT foundations to invest in digital assets with complete trust. Our team enables this through our institutional-grade security, expert personal service and portfolio of regulated digital asset banking, asset management, tokenisation and B2B services.

In Switzerland, Sygnum holds a banking licence and has CMS and Major Payment Institution Licences in Singapore. The group is also regulated in the established global financial hubs of Abu Dhabi and Luxembourg.

We believe that the future has heritage. Our crypto-native team of banking, investment and digital asset technology professionals are building a trusted gateway between the traditional and digital asset economies that we call Future Finance. To learn more about how Sygnum’s mission and values are shaping this digital asset ecosystem, please visit sygnum.com and follow us on LinkedIn and X.

Our Values

A key pillar of our success are the Sygnum values that define and unite us a team. We proudly call them our SYGN values:

• S stands for the importance we hold in Seeking and seizing opportunities, and the way we take personal ownership for delivering results for our clients;
• Y represents the way we say Yes to maintaining the highest level of integrity and fairness in everything we do. Sygnumers always display confidence without attitude;
• G reminds us to always Grow and win together. We only succeed by supporting each other and challenging ourselves, and our team-mates, to reach for new heights;
• N is here for Nose for value because we are always looking to focus on what matters most to our clients, partners and team.

Sygnum has one of the most diverse teams in the industry. Diversity plays a central role in keeping our work culture open, our teams productive and energised, and our solutions at the forefront of the industry. In the spirit of our SYGN value to “grow and win together”, we fully embrace an equal opportunity mindset in the way we onboard, develop and promote our team members.

About the role

You will join a team of engineers responsible for building processes and interfaces that connect Sygnum’s digital asset solutions with our core banking platform. Your work will ensure seamless synchronization between digital assets and core banking operations.

As a senior software engineer, you will play a key role in advancing these integrations across business domains, driving scalability for booking processes, and ensuring the quality and reliability of our systems. You will also design and maintain API-based features (such as balance retrieval, account transfers, payments, trading, and messaging) to meet evolving client and business needs.

Your main responsibilities:

• Actively participate in developing new features and improvements by writing and reviewing high-quality, secure code with comprehensive test coverage
• Constantly enhance the quality and security of applications, identifying existing technical debt and making plans to repay it
• Respond to production incidents promptly and efficiently, collaborating with cross-functional teams to resolve issues and restore service continuity
• Collaborate with platform engineers to enhance CI/CD pipelines and streamline release processes
• Collaborate with site reliability engineers and solution architects to optimize application availability, resilience, and observability
• Nurture and guide more junior software engineers through coaching and mentoring

Our ideal candidate

• You like to create scalable backend services based on our tech-stack: Java running on AWS.
• You have a collaborative and growth mindset
• You care about quality and se