Software Engineer

Senior Software Engineer role at Bug Bounty Switzerland building backend systems for enterprise security testing. Hybrid position in Zurich/Bern focusing on C#, .NET Core, Python, and Azure cloud architecture.

Bug Bounty Switzerland is a fast-growing security testing provider trusted by regulated organizations across Europe. This position focuses on developing the core platform that transforms security goals into executable strategies and actionable intelligence. The engineer will design and scale backend infrastructure that combines an orchestration engine with AI capabilities, operating with significant autonomy and direct accountability to deliver meaningful product impact.

Responsibilities

• Design and refine backend services using C#, .NET Core, and Python.
• Develop and maintain REST and MCP APIs to connect the orchestration engine, AI features, and user interfaces.
• Implement granular identity and access management for human operators, AI agents, and internal service communications.
• Structure data storage and processing flows using Azure SQL and CosmosDB to support both deterministic logic and AI operations.
• Architect systems where automated agents, human reviewers, and deterministic processes collaborate through event-driven patterns and durable execution.
• Manage service deployment on Azure compute resources, prioritizing reliability, scalability, and security.
• Collaborate on building internal administrative tools using Retool.
• Address frontend issues and enhancements within the Angular application when necessary.
• Lead initiatives from initial scoping through delivery, working independently or in pairs.
• Navigate uncertain requirements, make informed trade-offs, and produce functional prototypes when needed.
• Partner with product managers and stakeholders to address customer security needs through technical solutions.
• Maintain high code quality and production readiness while moving quickly.
• Utilize AI coding assistants like Copilot and Claude Code to improve development velocity.
• Deliver functional code early in the engagement and progressively tackle more complex problems.

Requirements

• Seven or more years of experience developing and maintaining production software.
• Advanced skills in C# and .NET Core.
• Proven experience building large-scale Python applications.
• Background in designing and running services on Azure or equivalent cloud environments.
• Knowledge of event-driven designs and messaging systems such as Azure ServiceBus or RabbitMQ, preferably with MassTransit.
• Strong grasp of relational and non-relational databases, including practical use of Entity Framework.
• Experience deploying containerized applications across Kubernetes, Functions, and Container Apps.
• Solid software engineering principles emphasizing testability, maintainability, and production readiness.
• Ability to solve problems independently and work effectively with partial information.
• Active use of AI coding tools like GitHub Copilot or Claude Code in daily tasks.
• Clear communication style that prioritizes simplicity and direct feedback.
• Willingness to work on-site in Zurich or Bern for hybrid arrangements.
• Fluency in English is mandatory.
• German language skills are advantageous.

Nice to have

• Familiarity with hybrid patterns that blend event-driven choreography with orchestrated execution for long-running workflows.
• Hands-on experience with graph databases or multi-model systems like CosmosDB using document and Gremlin APIs.
• Understanding of production LLM integration, agentic frameworks, or prompt engineering.
• Knowledge of real-time communication protocols including SignalR, SSE, or WebSockets.
• Deep familiarity with Azure services beyond compute and data, such as Key Vault, Blob Storage, or Application Insights.
• Experience with durable execution frameworks like Durable Functions, Prefect, or Temporal.
• Proficiency in modern observability techniques including structured logging, metrics, and distributed tracing.
• Frontend development skills with Angular and TypeScript.
• Background in creating low-code administrative interfaces using Retool or similar platforms.
• Prior work in cybersecurity, security testing, or products for technical audiences.
• Experience thriving in fast-paced startup environments with high ambiguity.
• Knowledge of CI/CD pipelines, infrastructure as code using Bicep or Terraform, and general DevOps practices.

What the company offers

• Competitive salary plus equity participation (ESOP), scaled to seniority and impact.
• Hybrid work model requiring regular on-site presence in Zurich or Bern.
• Full-time employment contract.

About the company

Bug Bounty Switzerland operates as a leading security testing hyperscaler headquartered in Switzerland. The company provides a comprehensive Cyber Resilience Platform trusted by security-focused organizations across Europe. As the firm scales rapidly, it emphasizes a culture of high autonomy, clear accountability, and meaningful impact. Engineers work within cross-functional teams, taking full domain ownership while balancing speed with craftsmanship to deliver production-grade systems. The environment encourages leveraging AI tools and delivering early contributions before tackling complex challenges.

• High autonomy and clear accountability for individual impact.
• Cross-functional teamwork with full domain ownership.
• Balance between rapid delivery and high-quality craftsmanship.
• Integration of AI developer tools into daily workflows.
• Early contribution expectations followed by progressive complexity.
• Trusted by security-conscious organizations across Europe.
• Fast-paced scaling environment in Switzerland.