Backend Engineer

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Job Title Backend Engineer Salary Not Disclosed Company Description 北京金网安泰信息技术有限公司 is a leading commodity e-commerce and electronic trading platform provider, headquartered in Beijing and operating since 1999. They have built mission-critical trading systems for global markets including steel and precious metals, and are now establishing their first international engineering hub in London to spearhead global expansion. Job Description Join 北京金网安泰信息技术有限公司 as a founding member of their London engineering team. You will own production services powering international trading infrastructure using Python, FastAPI, and Postgres. This role offers the unique opportunity to build scalable backend systems from the ground up while leveraging the stability of an established market leader entering new global territories. Location London, UK Why this role is remarkable Founding member status: Be one of the first engineers in the London office, directly shaping the technical culture and local team expansion.High-impact ownership: Move beyond maintenance to design and deploy critical trading infrastructure with full autonomy over architectural decisions and scaling strategies.Proven stability meets startup energy: Experience the security of a profitable company operating since 1999 combined with the fast-paced environment of an international market launch. What You Will Do Design and implement high-performance APIs and backend services using Python (FastAPI) to power electronic commodity trading platforms.Optimize database performance and schema design with Postgres and Redis to ensure reliability for real-time market transactions.Manage the full lifecycle of production services, including deployment via Docker/Kubernetes on AWS and implementing robust monitoring systems. The ideal candidate At least 4+ years of professional backend experience building and maintaining production-grade APIs using Python frameworks like FastAPI.Proven expertise in SQL and database management, specifically optimizing Postgres for high-traffic environments and complex data schemas.Strong track record of taking ownership of production services, including experience with AWS infrastructure, containerization, and scaling distributed systems. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. How does this work? Jack's an AI agent for job searching and career coaching. He works for you.Jill is the AI recruiter working for the company. She recruits from Jack's network.If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.