Senior Backend Software Engineer - CyberSec / Start-Up About the Company: Hyre AI is recruiting for a Senior Backend Engineer to join a highly ambitious early stage cybersecurity start-up at a crucial time in their growth following a successful seed round. Our client is on a mission to make the internet a safer place; their products aim to make sure that behind every click, login, and purchase - is a real human being. If you're a scrappy engineer who wants a role with autonomy & impact, this role might just be for you! What you'll be doing: In this role, you won’t just be building features — you’ll be laying the technical foundation that allows for the verification of humanity at internet scale. You will: * Design and scale high-throughput APIs and microservices that power AI-driven fraud and bot detection engines. * Architect backend systems where latency and reliability are critical — because in this domain, milliseconds and edge cases mean the difference between catching an attack or missing it. * Work directly with founders, product, and research teams to deeply understand emerging threats — and build backend systems that turn detection insights into operational reality. Every architectural decision you make will be working towards a future where every internet interaction can be trusted. About you: Here’s the kind of person who our client would be excited to work with: * You’re resourceful and fast-moving: You know how to navigate ambiguity and move projects forward without needing a playbook. * You think from first principles: You break problems down to fundamentals, question assumptions, and build smart, original solutions when needed. * You act with ownership: You take full responsibility for outcomes, not just tasks. You step into gaps, solve problems decisively, and keep standards high. * You bring high energy and clear thinking: You approach challenges with curiosity, positivity, and focus — and you keep momentum even when things get hard. * You care about the work, not the ego: You argue the case when it matters, back your thinking with evidence, and adapt quickly when new information comes in. * You’re multi-dimensional: You're more than just your technical skills — you're intellectually curious, open-minded, and constantly sharpening your edge. Your experience: Here's some thoughts on the experience you'll need to be successful in this role: * You’ve honed your skills over at least 4 years’ experience in backend development and have strong proficiency in GoLang and Node.js * You’ve highly comfortable with DevOps principles; experience with Kubernetes would be a plus! * Exposure to cloud platforms, particularly GCP or AWS * Familiarity with other robust backend programming such as Python * Experience on the front-end, particularly JavaScript would be a bonus! What's in it for you: * Competitive salary (let’s talk!) * Stock options – share in their growth * Employer-matched pension plan * The opportunity to shape systems that stop fraud before it starts and front-row seat in redefining online trust and identity