Software Engineer, Rapid Response Assignment - UK

Software Engineer, Rapid Response Assignment - (UK) Location: Cheltenham, UK (Remote) Team: Product & Engineering Employment Type: Full-Time About VulnCheck Exploitation prevention is only as strong as the intelligence driving those efforts, and most of the industry is still running on intelligence that lacks exploit context. VulnCheck, The Exploit Intelligence Company, delivers structured exploit intelligence on what is actively weaponized in the wild, purpose-built for the data lakes, ETL pipelines, automation, and AI and LLM workflows your infrastructure already runs on, raising the capability of everything it powers. About the Role We're looking for a Software Engineer, Rapid Response Assignment who combines strong engineering skills with a deep commitment to customer outcomes. In this hands-on role, you'll make sure our customers stay unblocked and that the issues they raise are resolved quickly, accurately, and for good.

You'll diagnose and fix complex problems across our platform, deliver improvements that directly address customer needs, and work closely with our Customer Success team to turn technical challenges into great outcomes. As part of a global engineering team providing continuous coverage, you'll bring engineering rigor to the work that customers feel most directly. This is a 100% remote role, but we're primarily looking for candidates based in Cheltenham, UK.

• Resolve customer-reported issues quickly and thoroughly, from investigation through to a durable fix
• Diagnose complex, ambiguous problems across our services and data pipelines, tracing them to root cause
• Deliver high-quality engineering work that improves the platform and directly addresses customer needs
• Partner closely with Customer Success to align on technical solutions and outcomes
• Maintain and improve backend systems, APIs, and data pipelines
• Write high-quality, maintainable code and uphold engineering best practices
• Improve system reliability, performance, and observability across the platform
• 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.)
• Strong diagnostic and debugging skills, with a proven ability to root-cause complex production issues
• Curiosity and persistence — a drive to understand problems fully and see them through to resolution
• A customer-obsessed mindset: you take pride in delivering accurate, high-quality solutions that delight customers
• Excellent communication skills, with the ability to work effectively with customers and cross-functional teams
• Solid understanding of distributed systems, microservices, APIs, system design, and cloud infrastructure (AWS preferred)
• Experience working with data pipelines, ETL systems, or high-volume data processing

• Prior experience in a customer reliability, sustaining, support, or escalation engineering role
• 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

What We Offer

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, tailored to your country of employment:

• Generous, flexible time off


• Retirement/pension plan contributions (e.g., 401k with match in the US; local pension schemes elsewhere)


• Comprehensive healthcare coverage


• Generous paid parental leave


• Remote-friendly environment with flexibility


• Support for home office costs (phone & internet)


• Ongoing professional development, coaching, and learning resources


• Opportunities for career advancement within a fast-growing team

Why Join Us

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.

VulnCheck is proud to be an Equal Employer Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. VulnCheck is committed to working with and providing reasonable accommodations to applicants with physical and mental disabilities. *Even if your experience doesn’t perfectly align with the job description, we encourage you to apply—we value potential just as much as a perfect resume.