Software Engineer

PortSwigger is a company that values high-bandwidth communication, collaboration, and innovation. They are looking for a software engineer to join their team and help shape the future of web security. The ideal candidate is someone who cares about outcomes, has a growth mindset, and is passionate about product-led engineering.

Requirements

• Solve complex technical problems with creativity and sound judgment
• Contribute across the stack (frontend, backend, infrastructure), balancing breadth with depth and adapting quickly to new domains and tools
• Talk to users and use insights to drive decisions
• Share your work early and invite input from peers and cross-functional partners
• Collaborate with designers, researchers, marketers, and perform pair programming activities with other engineers and AI
• Proactively seek and give feedback with candour and care, helping create a culture of continuous improvement
• Role-model PortSwigger values and raise the bar through your mindset, behaviours, and technical standards
• Leverage AI tools (e.g. LLMs, agents, copilots, ML APIs) to improve developer workflows and user-facing features
• Explore how AI can be meaningfully integrated into our products to solve real-world security challenges
• Help shape how the team works — its practices, its rhythms, and its culture

Benefits

• 8% employer pension contribution
• Share options (discretionary)
• Private medical insurance, provided through Bupa with same day virtual GP appointments
• Life assurance: 4x salary
• Income protection: full pay for first 6 months of incapacity followed by 75% of salary plus pension contribution
• 33 days including public holidays, with the ability to buy and sell additional holidays
• Regular team events, including memorable summer and winter parties
• Flexible working hours, with core hours from 9am to 4pm