Senior Back-End Software Engineer (up to £120k)

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 is building an AI operating system for the parts and equipment industries. Think automotive spare-parts distributors, construction, agriculture – businesses sitting on vast, fragmented, unstructured data across legacy systems. They're bringing modern AI to a blue-collar world, backed by leading VCs and founded by AI researchers. This isn't another consumer app; it's a deep technical challenge with real-world impact. You'll be one of the first US tech hires, working directly with the founders to build this system end-to-end. This is a foundational role: you'll own data ingestion, cleaning, transformation, and the backend services that serve insights. It's not a narrow feature-team role; it's about shaping the architecture, setting standards, and defining the engineering culture from day one. Expect intense work, but also the rare chance to build the core product of a fast-growing company. The work Design, build, and own end-to-end data pipelines, from raw ingestion through cleaning and transformation.Develop robust orchestration workflows (Airflow-style DAGs) to ensure reliable, observable data movement.Integrate deeply with messy, legacy customer systems – on-prem databases, SFTP, CSV dumps, ERPs – to structure fragmented data.Architect and develop the core APIs and backend services that power AI insights for non-technical users.Define the engineering standards for data quality, schema evolution, observability, CI/CD, and deployment automation. What You Bring 5+ years shipping backend services, ideally in an early-stage or fast-paced environment. (Exceptional mid-level engineers with 2-3 years will be considered.)Deep expertise in Python for APIs, services, workflow design, job scheduling, and orchestration tools.Proven ownership of end-to-end data pipelines, ensuring reliable and observable data movement.A builder's mindset: you thrive on startup intensity, have a track record of shipping, and are not looking for a 9-to-5.Your primary strength is backend engineering; this is not a full-stack or frontend-focused role. Why apply through Dex This is a rare, foundational role at an early-stage company that isn't publicly advertising. Dex helps you cut through the noise: get a direct introduction, skip the cold application, and receive a full brief before you even interview. We connect you to roles like this that you won't find elsewhere. If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/9b329b61-2272-48d0-9d3f-2940b0a43973 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.