Backend Software Engineer at High-growth AI Startup

Jack & Jill/external Ats
San Francisco, CA

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 .


Backend Software Engineer

Company Description: High-growth AI startup

Job Description:
Join an innovative team building a sophisticated AI memory platform designed to help startups scale without losing their organizational context. You will build scalable backend systems and develop advanced LLM agents that integrate with vast datasets. This is a high-impact role in a fast-paced environment where you will directly influence strategic product alignment.

Location: San Francisco, USA

Why this role is remarkable:

  • Work at the intersection of LLMs and organizational intelligence to solve fundamental scaling challenges for top-tier companies

  • Backed by top-tier VCs and Silicon Valley veterans, ensuring a high-pedigree environment with significant industry visibility

  • Enjoy premium benefits including Equinox memberships, comprehensive wellness stipends, and a culture that prioritizes rapid technical growth

What you will do:

  • Architect and deploy scalable backend platform systems to support large-scale data processing and organizational insights

  • Develop and optimize LLM agents using agentic frameworks and RAG to enhance the platform’s contextual understanding

  • Take full ownership of features in an early-stage environment, moving quickly from ideation to production-ready code

The ideal candidate:

  • Possesses at least 3 years of professional experience in backend and platform engineering with a focus on high-performance systems

  • Demonstrates technical proficiency in Python, AWS infrastructure, SQL databases, and robust API development and integration

  • Shows a strong ability to adapt to evolving technical challenges and a deep interest in LLMs and generative AI

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.

Next steps
Step 1. Visit our website
Step 2. Click 'Talk to Jack'
Step 3. Talk to Jack so he can understand your experience and ambitions
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction
Step 6. If not, Jack will find you excellent alternatives. All for free

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.

Posted 2026-01-31

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