Senior Software Engineer

Light Frame SA is a Swiss Financial Technology company building the next-generation core banking and portfolio management platform for private banks and wealth managers. Founded by the team behind Alpian (Switzerland’s first cloud-native private bank) and seasoned technologists from leading institutions, we are enhancing and replacing legacy systems with a modern, intelligent, API-first solution that dramatically reduces operational costs while enabling new revenue opportunities and greater autonomy for our clients.

We have multiple enterprise clients, strategic partnerships, and high-caliber advisory support. This is a rare opportunity to join a founder-led company at the inflection point of commercial traction and scale - helping shape the future of private banking technology with cutting‑edge solutions and deep domain expertise.

As a Senior Software Engineer, you will design, develop, and evolve our next generation Core Banking technology. You will drive technical excellence, collaborate with leading team, and deliver scalable, secure, and high-performance solutions for our financial clients.

This role is based in our office in Lausanne, Switzerland. We operate on a hybrid model, requiring 3 days per week in the office to foster collaboration and team culture, with the remaining days remote.

• Design, implement, and maintain high-quality backend services.
• Develop and optimize core banking modules, including account management, transactions, and compliance workflows.
• Integration of AI and machine learning capabilities to drive automation, intelligent decisioning, and productivity gains for our clients.
• Build, deploy, and optimize cloud‑native applications using Infrastructure as Code, automated CI/CD pipelines, and robust monitoring.
• Ensure applications are highly scalable, resilient, performant, and aligned with cloud best practices.

• Collaborate on frontend development to create intuitive, user‑friendly interfaces for banking and wealth management workflows.
• Ensure seamless end‑to‑end integration between frontend and backend systems.

• Contribute to architectural evolution, including domain‑driven design, module boundaries, and long‑term maintainability.
• Participate in key architectural decisions, code reviews, and technical discussions to maintain the highest engineering standards.

• Write clean, testable code and implement comprehensive automated testing (unit, integration, end‑to‑end).
• Embed security best practices throughout the development lifecycle and support fintech regulatory and compliance requirements.
• Work closely with product, design, and engineering teams in an agile environment.
• Mentor and guide junior and mid‑level engineers to raise overall team capability.
• Proactively identify and implement improvements in development processes, system performance, and reliability.
• Stay up‑to‑date with emerging technologies and champion innovations that strengthen our platform.

• Minimum 10 years of professional software development experience, with strong expertise building SaaS platforms.
• Experience developing banking or fintech software is strongly preferred.
• Hands‑on expertise with Domain‑Driven Design (DDD).
• Deep proficiency with AWS cloud services (EC2, RDS, S3, ECS/EKS, etc.), Infrastructure as Code (Terraform or equivalent), and containerization (Docker, Kubernetes).
• Strong command of modern software engineering practices: CI/CD, automated testing, observability, and secure coding.
• Excellent problem‑solving abilities and communication skills, with the ability to explain complex technical concepts to both technical and non‑technical stakeholders.

• A unique opportunity to be part of a senior team working on mission‑critical fintech infrastructure in the heart of Switzerland’s Lake Geneva region, with competitive compensation, benefits, and the chance to shape the future of private banking technology.