Senior Software Engineer (80-100%)

Overview Join SIX to design, build, and operate reliable, scalable backend platforms that power financial indices. As a senior IC within a distributed team in Zurich and India, you own features end-to-end from design to production, collaborating with PMs, domain experts, and SREs. You’ll shape robust solutions and drive improvements in performance, reliability, and maintainability. This role offers hands-on engineering, impact across index services, and a chance to influence finance technology at scale.

Verantwortungsbereiche Design, build, and maintain backend services for index calculation and data processing (Java/Spring Boot and Python) Own end-to-end delivery of features, ensuring quality and timely delivery Take technical ownership of complex components from design through testing, deployment and production support Collaborate with SRE teams to ensure reliability and production readiness Drive architectural decisions to improve scalability, performance, and maintainability Zentrale Anforderungen Deep hands-on software engineering with Java (Spring Boot) and Python Ability to solve complex technical problems and make sound architectural decisions in production Strong knowledge of backend and distributed system design (scalability, resilience, observability) Experience with modern engineering tooling and AI-assisted development to boost productivity and code quality Bachelor’s or

Master’s degree in Computer Science or equivalent hands-on experience Fluent English; German is a plus Collaborative mindset with cross-functional teams Strong communication skills Ownership and proactive problem-solving Java (Spring Boot) Python Backend and distributed systems design