Senior Software Engineer, Proactive Security
We are seeking a Senior Software Engineer, Proactive Security to help strengthen the security of complex, distributed systems before vulnerabilities become incidents. In this role, you will design and build scalable security solutions, develop tools that identify and reduce risk early in the software development lifecycle, and partner closely with engineering, infrastructure, and product teams. You will contribute to security architecture, threat modelling, vulnerability management, secure-by-design practices, and the automation of preventative and detective controls.
Your responsibilities will include defining and implementing security engineering strategies, improving code and dependency scanning, developing security-focused services and integrations, and analysing emerging threats to determine practical mitigation approaches. You will review designs and technical proposals, lead security assessments, investigate complex issues, and translate findings into clear, prioritised engineering work. You will also help establish standards, metrics, and operational processes that improve security maturity across development teams. As a senior member of the team, you will mentor engineers, provide thoughtful technical guidance, and promote a culture of shared responsibility for security.
You should have substantial professional experience in software engineering, security engineering, or a related discipline, with a strong understanding of secure application development and modern cloud environments. Experience programming in languages such as Python, Go, Java, or similar is required, along with familiarity with APIs, distributed systems, CI/CD pipelines, containers, infrastructure as code, and common application security risks. Knowledge of threat modelling frameworks, vulnerability research, identity and access management, cryptography, or security testing methodologies is highly valued. We are looking for someone who combines deep technical expertise with sound judgement, clear communication, curiosity, and the ability to influence teams without relying on formal authority.
Senior Software Engineer, Proactive Security
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