Software Engineer IV

HackerOne, a leading offensive security solutions provider, is seeking a Software Engineer IV to join their engineering team in a remote capacity based in London, UK. This role combines technical leadership with hands-on development, requiring 5+ years of full-stack experience. The position offers a competitive salary range of £90K-£110K plus equity.

As a Software Engineer IV, you'll lead challenging projects and collaborate with Product Managers and Designers to build features for HackerOne's cybersecurity platform. The role demands both broad technological expertise and deep domain knowledge, with opportunities to drive new initiatives and make systematic improvements across codebases.

The company provides a comprehensive benefits package including health insurance, equity options, retirement plans, unlimited PTO, and parental leave. HackerOne's culture is built on core values including Customer Obsession, Default to Disclosure, and Winning Together, fostering an inclusive and transparent work environment.

Your journey begins with a structured onboarding process (H.A.T.C.H.), where you'll set up your development environment and learn about the company's engineering processes. By day 90, you'll be making significant technical contributions and leading important projects. The role requires expertise in Ruby on Rails or Python, with preferred experience in generative AI, Elasticsearch/OpenSearch, and GraphQL.

HackerOne's platform is trusted by industry giants like Amazon, Anthropic, General Motors, and the U.S. Department of Defense, making this an opportunity to work on meaningful projects with global impact. The company has been recognized as a Best Workplace for Innovators and Most Loved Workplace for Young Professionals.