Senior Engineer - Backend

Job Summary

What we're looking for:

We're looking for a generalist, high-agency engineer with 5+ years of backend experience building customer-facing products. You should have startup DNA — experience at top-tier startups (Series B or earlier) or as a founder — and a product mindset that ties technical decisions to business impact. We need someone who questions the "why," drives projects end-to-end without oversight, and thrives in early-stage ambiguity with high ownership and fast iteration.

What you'll do:

• Own and ship product features end-to-end — from problem scoping through backend implementation to production.
• Design and ship LLM agents that reason over large, messy, real-world organizational data, and make them reliable enough to trust.
• Make key technical decisions across the product and backend — architecture, data modeling, APIs, tooling — and set the engineering quality bar.
• Operate with full autonomy; in a team this small, your judgment directly shapes the product, the codebase, and the company.
• Own high-risk, high-impact projects in a fire-and-forget work style with minimal hand-holding.
• Shape the product direction alongside the founding team; translate customer needs into technical solutions.
• Work closely with the founding team to support growing client engagements ranging from hundreds to thousands of employees.

Work experience

• Must have Experience at top-​tier startups (Series B or earlier) or as a founder;​ production-​deployed software at a real company.
• Must have Built and shipped customer-​facing backend products at production scale.
• Must have Deep Python expertise for production backend systems.
• Must have Strong backend architecture and systems design skills.
• Required 5+ years of experience with focus on customer-​facing products.
• Required Set technical direction on ambiguous,​ high-​impact projects end to end.
• Required Generalist — not a pure infra/backend specialist;​ comfortable building across the product surface.
• Required Proficient in API design and SQL data stores.
• Required Hands-​on experience building with LLMs or agentic AI systems
• Required Product mindset — ties technical work to business/customer impact,​ not just internal systems.

Skills

• Direct experience working with customers.
• Fluent with AI coding tools;​ uses AI as a force multiplier without outsourcing thinking.
• Tech stack: Python, SQL, Distributed Systems, API Design, LLMs, RAG, Agentic Frameworks, Platform Engineering.

Join us if you’re ready to innovate at the forefront of backend development! Bring your expertise in software engineering to create impactful solutions that enhance user experiences worldwide while advancing your career in a vibrant tech-driven environment.

Pay: $190,000.00 - $300,000.00 per year

Application Question(s):

• Walk us through a recent project you shipped end-to-end — what was the problem, how did you approach it, and what did your day-to-day workflow look like?
• Tell us about something you've built that involves LLMs or AI agents. What were the trickiest technical decisions and how did you work through them?
• What stage companies are you prioritizing in your search, and why?
• What is their salary expectation?
• Will you require visa sponsorship now or in the future?

Experience:

• focus on customer-​facing products: 5 years (Required)

Willingness to travel:

• 25% (Required)

Work Location: Hybrid remote in San Francisco, CA (San Francisco County)