Software Engineer (up to £150k)

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. Dex is an AI recruiter agent that helps you run your job search. Tell Dex your stack, seniority, and what you want to build. We will manage your applications and surface other opportunities that are a fit. The role This company acquires profitable, mission-critical B2B SaaS companies, then deploys an AI operating system across them. The problem is hard: building a platform that connects deeply into company data, learns what good operations look like across dozens of businesses, and acts on it. Backed by leading investors, the founding team brings backgrounds from early-stage, pre-IPO tech and frontier AI research. You'll take end-to-end ownership of features from architecture to production. This isn't just shipping code; it's shaping the product directly with commercial teams. You'll join a small engineering team, either building the core AI platform or deploying it into acquired companies to ship product changes identified by the intelligence layer. It's a rare seat to build foundational AI infrastructure with direct business impact. The work Design APIs, data models, and integrations to pull structured and unstructured data from acquired companies into the core platform. Build React interfaces that surface real-time operational intelligence. Own features end-to-end, from architecture through to production deployment. Work directly with product and commercial teams to define and shape the roadmap. Contribute to a codebase that is 90%+ Ruby, with opportunities in Python. What You Bring 2–5 years of experience building and shipping production systems. Owned the full lifecycle of features: data modelling, API design, testing, reliability, and deployment. Strong in at least one modern stack, with the ability to pick up new languages quickly (their codebase is 90%+ Ruby). Proven ability to break down ambiguous problems, prioritise high-leverage work, and communicate reasoning clearly to non-engineers. Actively exploring AI tooling, LLM workflows, or developer productivity improvements, with something built or shipped to show for it. Why apply through Dex This is a rare role at a company building foundational AI infrastructure, not just another SaaS application. Dex helps you cut through the noise: get a full brief on the company and role, understand the nuances, and apply with confidence. Skip the cold application process and get matched to this and other high-impact roles that fit your profile. If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/c8715e68-23bc-4e9d-a8fc-61ae9ca444b1 As part of the recruitment process at Dex, we process your personal data in accordance with our Privacy Notice for Job Applicants. This notice explains how and why your data is collected and used, and how you can contact us if you have any concerns.