Senior Backend Software Engineer - Onboarding

About the role

A partner company is recruiting a Senior Software Engineer (Backend) for its Onboarding & Identity team in Switzerland. The team builds the backend infrastructure behind customer verification, covering the full journey from registration through compliance approval. It runs KYC/KYB checks, identity verification, sanctions and PEP screening, risk assessments and agreement signing, and supports direct, embedded and partner-led onboarding at high volume. The role is hands-on engineering in an international, fast-growing environment with a hybrid or remote approach.

Key responsibilities

• Design, build and operate reliable backend services for the customer onboarding and identity verification journey.
• Develop and maintain APIs and orchestration for KYC/KYB, identity verification, sanctions and PEP screening, automated risk assessment and agreement signing.
• Build scalable integrations so partners can onboard large volumes of end customers via APIs and webhooks.
• Integrate third-party identity verification and RegTech providers (e.g. SumSub, Orbis) and workflow orchestration tools such as Temporal.
• Work with Salesforce specialists and engineering teams to embed Salesforce into existing workflows.
• Collaborate with Product Managers and engineers in the Embedded Payments and Onboarding squad, and contribute to engineering practices that keep compliance and regulatory standards intact.

Required profile

• Strong professional experience as a backend software engineer.
• Proven experience designing, developing and operating microservices in distributed systems.
• Experience with cloud platforms (AWS, GCP or Azure) and containerization (Docker, Kubernetes).
• Experience with observability, logging, metrics, distributed tracing and performance optimization.
• Comfortable with Jira, Confluence and Git-based workflows; strong communication skills.
• Experience in fintech, payments or banking infrastructure is an advantage; exposure to payment schemes, banking APIs or multi-rail routing is beneficial.

Required skills

• Java, Kotlin or similar JVM languages.
• PostgreSQL and event-driven architectures (Kafka, AWS SQS, SNS).
• CI/CD pipelines, infrastructure-as-code.
• Domain-driven design and hexagonal architecture are desirable.

What we offer

• Competitive salary based on experience and certifications.
• Flexible working hours and a hybrid/remote approach.
• Flexible holiday policy and opportunities to travel to offices worldwide.
• A collaborative, open culture and the chance to work on large-scale financial infrastructure.