MBN Solutions
Software Engineer
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Founding Software Engineer – AI Voice Agents – London office based – upto £250k
Ever built something from zero and watched it become the backbone of a company?
Love owning a problem end to end - from customer conversation to shipped code?
Want to work with cutting-edge AI in a business that's actually scaling, not just theorising?
If that sounds like you, keep reading.
The Challenge
This is a Series A startup (fresh off a $13m raise, YC-backed) building AI voice agents for trades businesses - agents that answer calls, handle WhatsApp and email, take bookings, process payments, and run the CRM the way a human would.
Revenue's growing ~30% month on month. They've gone from founders living and breathing AI in San Francisco to a business shipping fast and scaling hard. Now they need a founding engineer to help build the next chapter.
This isn't a "nice to have" hire. You'll shape how the product works, how the team operates, and how the company grows.
What You'll Be Building
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- Core product features across the stack - Python, TypeScript, cloud infra, event-driven systems, third-party integrations
- Solutions owned end to end - working directly with customers to understand needs, scope the build, and deliver outcomes
- The right thing at the right speed - hacking an MVP when speed wins, investing in scalable foundations when it counts
- A team that raises its own bar - testing, documentation, reliability, security, done properly and shared with others
Why This Role Is Different
- Founding-level ownership from day one, not just a seat on the team
- Real customers, real revenue, real problems - not a lab experiment
- A business moving fast with the funding to back it
- Genuine influence over the product and the culture as the team scales
About You
- Strong software engineering fundamentals - you can design, debug, and ship reliable systems
- Proficient in Python or TypeScript (or clear proof you can pick up what's needed)
- Experience shipping AI products end-to-end - startup, side project, open source, or at scale
- Comfortable across the stack - frontend, backend, infra, wherever the problem is
- Confident working directly with customers or non-technical stakeholders to scope and deliver
- A track record that shows drive - something you've launched, contributed to, or taken ownership of when nobody else would
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Bonus if you have:
- Early-stage startup experience, especially in AI, voice platforms, or event-driven systems
- Familiarity with modern cloud infra - Kubernetes, serverless, distributed systems
- Evidence of customer empathy - support, founder, or just building things that solved real pain
What's on Offer
- Competitive salary & equity
- AI-focused learning & development
- Team socials & annual offsites (last year: Greece)
- Private healthcare
Interested? Apply directly or reach out to me for a confidential chat:
📞 0203 773 6498
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