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Job Title


Founding Engineer


Company : Cyberstaff


Location : london, south east england


Created : 2025-12-22


Job Type : Full Time


Job Description

We’re building an AI workforce that lets small businesses run and grow themselves. Working alongside technical founder Kai Feller (previous company was UK’s largest bootstrapped exit of $300m), we're assembling an elite founding team that moves fast and gets things done.As a Founding Engineer, you’ll ship step-changing features fast, shaping architecture, and integrating cutting-edge AI directly into the product. You’ll design & build the scalable backend systems and intelligence layers that enables the autonomous running of thousands of businesses. This is an engineering role at its best - building what’s never existed before hands-on within a small & exceptionally talented group, that operates with a sense of urgency and passion for building innovative products.What you’ll doBuild new step-changing product features end-to-end, shipping fast and often.Integrate cutting-edge AI directly into the product - voice, reasoning, context management, data extraction - turning static workflows into living intelligence.Design & build APIs that scale internally & externally to connect products, integrations, and intelligence systems together.Architect robust data flows & pipelines that fuel agent context & decision making.Develop backend infrastructure and intelligent automation for knowledge crawling, extraction and enrichment.Help shape and contribute towards our DevOps practices (CI/CD, cloud infrastructure, observability).RequirementsDeep full-stack Javascript expertise or deep backend Python expertise (we're looking to hire for both).Previous full ownership of a successful high volume system.Evidence of excellence at everything you do.Exceptional problem-solving skills and meticulous attention to detail.Naturally articulate and able to communicate complex concepts clearly.Genuine care for customers, their experience and desire to wow them.Why joinShare options - Everyone gets equity. But unlike most, our share options translate into real value as we’ve paid them out before.High pay 'stability - We pay top salaries and offer tangible equity. You don’t have to trade security for upside.Tools for the job - Whatever helps you be more productive, you get it. The best hardware, software, and setup. We love technology.Proven winning team - We’ve built, scaled, and sold businesses before (UK’s largest bootstrapped exit of $300m). Now we’re hands-on building again.Warchest available - We have our own significant funds available if required. No external shareholders, no external distractions.