Senior Software Engineer (Cheltenham, UK)

You'll play a key role in shaping architecture, improving system performance and reliability, and delivering features that directly impact customers. While you'll help resolve production issues, your focus will be on building durable, scalable solutions that prevent them. Although this is a 100% remote role, candidates must be located in or around Cheltenham, United Kingdom. What You'll Do

• 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

• 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 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, * Experience in cybersecurity, vulnerability management, or threat intelligence
• 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

We believe people do their best work when they feel supported, trusted, and valued. VulnCheck offers benefits designed to meet a wide range of needs and lifestyles: Benefits and Perks

• Unlimited PTO
• 401k plan
• Comprehensive healthcare coverage
• Generous paid parental leave
• Remote friendly environment with flexibility
• Expense reimbursement for Cell Phone & Internet
• Ongoing professional development, coaching, and learning resources
• Opportunities for career advancement within a fast-growing team

Built on over two decades of cybersecurity experience, our team of experts understands the intricacies of vulnerabilities, their exploitation in the wild, and how to leverage this data to build more effective cybersecurity products that produce better outcomes for organizations. VulnCheck gives organizations a tactical advantage by providing best-in-class exploit & vulnerability intelligence information. We have a sense of duty to protect the critical infrastructure we rely on including medical devices, power grids and telecommunication networks. We were founded in 2021 in Lexington, Massachusetts. VulnCheck has a transparent, collaborative, and supportive culture - we are looking for people who have a growth mindset, are curious and innovative. Our team is smart, but humble, hardworking, and supportive.