Senior Software Engineer (US)

VulnCheck is a cybersecurity company delivering structured exploit and vulnerability intelligence. The Senior Software Engineer will design, build, and scale backend systems, APIs, data pipelines, and core platform services while improving architecture, performance, reliability, and observability. The role also involves technical leadership, cross-functional collaboration, mentoring, production support, and incident response.

Responsibilities:

• Design and build scalable backend systems, APIs, and data pipelines
• Own services end-to-end, including architecture, development, deployment, and operation
• Lead technical design discussions and contribute to system architecture decisions
• Write high-quality, maintainable code and drive engineering best practices
• Debug complex production issues and implement long-term, scalable solutions
• Improve system performance, reliability, and observability across the platform
• Partner closely with Product, Data, and other Engineering teams to deliver impactful features
• Mentor junior engineers and contribute to a strong engineering culture
• Participate in incident response and on-call rotations

Requirements:

• 5+ years of experience building and scaling backend systems as a software engineer
• Strong programming skills in one or more languages (Python, Go, Java, etc.)
• Experience in cybersecurity, vulnerability management, or threat intelligence
• Experience designing distributed systems and working with microservices architectures
• Deep understanding of APIs, system design, and cloud infrastructure (AWS preferred)
• Experience working with data pipelines, ETL systems, or high-volume data processing
• Proven ability to debug and optimize production systems
• Strong ownership mindset with the ability to lead projects independently
• Excellent communication skills and ability to collaborate cross-functionally
• Familiarity with CVE, NVD, KEV, or exploit intelligence datasets
• Experience with streaming systems or real-time data processing
• Background in high-growth or startup environments