Senior Software Engineer, Core Banking

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 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 security and bake those aspects in the software development lifecycle
• You are comfortable taking ownership of the whole development lifecycle, from designing solutions to running the application in production
• You are proactive and get motivated with new opportunities and challenges

What will make you stand out:

• Expertise in Java (21+)
• Expertise in Quarkus (or Spring)
• Expertise in working with RDBMS (ideally Postgres).
• Working experience with utilizing Kafka.
• Working experience with caching frameworks (ideally Redis)
• Designing flexible and robust REST APIs with an API-first approach.
• Understanding microservices, event-driven architecture and being able to implement complex functionality with high quality and security.
• Working knowledge of Docker and containerization
• Experience working with Kubernetes.
• Experience working with AWS is beneficial.
• Experience working with Typescript and with some UI framework (React, Angular) is beneficial

Our engineering culture:

• Team first mindset. The team above its individuals
• Our people always first. Everything starts there
• We deliver frequently, with high quality and security. Yup, that's right.
• We celebrate success and learn from failures. The key to a healthy balance.
• We are pragmatic and look for simplicity. KISS everywhere
• We have positive impact. We deliver results.

Our Offer

Joining Sygnum means being part of a dynamic, global team that is building a trusted gateway between the traditional and digital asset economies. Working at Sygnum, you will experience our fast-paced, exciting work environment that embraces meritocracy and collaboration and open communication. Alongside our ambitious long-term mission, we also come together for reaching important milestones and annual crypto-industry anniversaries like Bitcoin Pizza Day, and regularly celebrate together at themed company events as part of our journey to shape Future Finance.

Sygnum offers a comprehensive package of benefits for all team members. They include:

• Attractive combination of market salaries and entrepreneurial incentive scheme
• Flexible/Work at home policies
• Professional development via Mentoring and Buddy programs
• One-month fully paid sabbatical after five years of continuous employment

If you are passionate about the potential of blockchain to share Future Finance and your profile is a good fit for this position, please send us your CV today