Software Engineer, Backend Developer, Cloud Engineer - Software

About Bug Bounty Switzerland

Bug Bounty Switzerland is the leading Security Testing Hyperscaler. With our Cyber Resilience Platform, we help regulated enterprises in financial services, critical infrastructure, and government stay ahead of evolving threats.

We’re headquartered in Switzerland, trusted by some of the most security-conscious organisations in Europe, and scaling fast.

We're building the operating system for enterprise security testing - a platform that turns security objectives into executable plans and translates findings into actionable insights.

We have a proven orchestration engine, a growing AI layer, and real customer traction. Now we need a Software Engineer to build and scale the backend systems that bring them together. You'll own the services, data layer, and integration points that power the platform end-to-end, architect the systems where agents, humans, and code interact, and ship what customers rely on daily.

This is a senior role with high autonomy, clear accountability, and the space to create real impact.

You'll design, build, and maintain the backend systems that make our security testing platform reliable, fast, and extensible. This means:

• Architecting and evolving backend services in C# / .NET Core and Python that form the backbone of our platform

• Building and maintaining APIs and integration points (REST, MCP) that connect our orchestration engine, AI capabilities, and customer-facing interfaces

• Designing granular identity and access control across human users, AI agents, and service-to-service calls

• Working across a multi-model data layer (Azure SQL, CosmosDB document + graph) - designing storage and data flows that fit the access pattern, serving both deterministic logic and AI agents

• Architecting systems where agents, humans, and deterministic logic co-drive security testing - event-driven choreography and durable execution patterns that trigger, await, and react to each other across long-running, stateful workflows

• Deploying and operating services across Azure compute (Kubernetes, Functions, Container Apps) with a focus on reliability, scalability, and security

• Co-creating internal admin interfaces on Retool, to streamline operations

• Contributing to our Angular frontend when needed - fixing issues end-to-end rather than stopping at the API boundary

You'll work in cross-functional teams with full domain ownership - where success means moving the needle for customers and the business:

• Drive projects from shaped bets with clear appetite and boundaries - find the best way to deliver them with your team, in pairs, or independently

• Navigate ambiguity with confidence - make smart trade-offs, prototype when needed, and ship what matters

• Partner with peers, product, and stakeholders to solve customer security challenges through technical innovation

• Balance speed with craft - build on a strong, well-maintained core with the discipline needed for production-grade systems

• Leverage AI developer tools (Copilot, Claude Code, etc.) as a natural part of your workflow to accelerate delivery

• Ship meaningful contributions within your first weeks, then take on increasingly complex challenges

• 7+ years of professional software engineering experience with a track record of shipping and maintaining production systems

• Strong proficiency in C# and .NET Core

• Experience with large-scale Python software development

• Experience designing and operating services on Azure or comparable cloud platforms

• Understanding of event-driven architectures and messaging (Azure Service Bus, RabbitMQ, or similar), ideally with frameworks like Mass Transit

• Depth in relational and non-relational databases, including hands‑on experience with ORMs like Entity Framework

• Experience deploying and operating containerized workloads across cloud compute models (Kubernetes, Functions, Container Apps)

• Strong software engineering fundamentals: you write code that is testable, maintainable, and built for production

• Proven skills in structured, independent problem-solving - comfortable working with incomplete…