Dex
Staff Software Engineer (up to £200k)
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This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.
If you're interested, sign up to Dex to apply.
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The role
This isn't another AI startup building a chatbot. This company acquires profitable, mission-critical B2B SaaS businesses, then deploys a proprietary AI operating system across them. The system ingests vast amounts of operational data – from CRM to financial records – to encode best practices and layer autonomous agents on top, automating sales, onboarding, and customer success workflows. They're well-funded by leading investors, with a founding team from top-tier engineering and frontier AI research backgrounds.
You'll join a small, rapidly scaling engineering team (currently four, growing to ten) and own the hardest end-to-end problems on the core platform. This is a Staff Software Engineer role focused purely on technical leadership and deep problem-solving, not people management. You'll design the architecture for a system that scales across dozens of diverse businesses, working directly with the CTO and Engineering Lead to set technical direction. This seat is for a force multiplier who raises the bar through code and mentorship, not someone looking to manage a team.
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The work
- Architect and build core components of a proprietary AI operating system, scaling it across a portfolio of B2B SaaS companies.
- Own end-to-end delivery of complex features, from deep data integration to autonomous agent deployment.
- Define technical strategy and make critical trade-off decisions that shape the platform's evolution and scalability.
- Anchor critical workstreams, solving open-ended problems around heterogeneous data, operational knowledge encoding, and autonomous action.
- Raise the engineering bar across a small, fast-moving team through code review, mentorship, and technical leadership.
What You Bring
- 5+ years shipping production systems end-to-end, with clear examples of architectural decisions that drove business impact.
- Deep expertise in at least one modern stack (e.g., Python, Ruby, Go, Java) and the ability to quickly master new languages.
- Proven track record as a technical force multiplier on small, fast-moving teams: setting the bar, mentoring, and accelerating peers.
- Exceptional ability to break down ambiguous problems, prioritize high-leverage work, and communicate complex trade-offs to both technical and non-technical stakeholders.
- Based in London or willing to relocate.
Get help with your application
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Why apply through Dex
This is a rare Staff-level role with deep technical ownership, not a management track. Dex helps you cut through the noise: sign up once, get matched to this role and others like it, and skip the cold application process. We'll brief you properly before any interview, ensuring you understand the full context and what makes this opportunity genuinely unique.
If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/bdd34d3a-a584-482e-988d-4110221199ed
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