Full-Stack Software Engineer

alexai· Engineering
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📍 San FranciscoFullTime💰 USD 100K–250K/yr

About this role

Why Alex?

Alex is one of the fastest-growing startups to come out of its YC batch with strong traction. We’re revenue-generating, well-funded, and backed by premier investors with years of runway.

We’re building the future of hiring. Our AI recruiter conducts live job interviews, helping companies get deep hiring signals faster and more efficiently than ever before. Customers love the product - and we’re just getting started.

Who are we?

We’re people who:

  • genuinely enjoy solving complex engineering problems

  • learn quickly and do what it takes to deliver results

  • work really, really hard

  • move with urgency

  • enjoy and value working together in person in San Francisco 5 days a week

What technologies do we use?

Experience preferred in:

  • Javascript (Typescript, React, Node, Next)

  • Python

  • Cloud / DevOps (Azure, Kubernetes, Docker)

  • System Architecture

What can I work on?

Alex is similar to a marketplace, as we serve both candidates through the interview experience and employers through a data aggregation and analysis platform. As a hands-on engineer, you will build both consumer-facing and enterprise-grade software with a clear opportunity for growth. Problems that you could work on related to consumer software are:

  • How can we bring the average interviewer response latency down to 200ms?

  • How can we fine-tune our models to decrease hallucination and help Alex pass the Turing test?

  • How will our system architecture change as we scale to thousands more users, concurrently?

Problems that you could work on related to enterprise software are:

  • How do we integrate with our customer’s internal hiring systems?

  • What’s the best way to present interview results visually and as fast as possible?

  • How can Alex expand to coordinating the hiring process end to end?

  • And many, many feature requests that need to be built out!

What’s in it for me?

  • Take ownership of building the next billion dollar company

  • Collaborate with a tight-knit team of talented builders

  • Launch products that directly impact people’s careers

  • Work with the founding team daily in-person in San Francisco

  • Competitive salary and equity

  • Health insurance, unlimited PTO, and great company events

If you’ve gotten this far and our culture/tech resonates with you, we want you to apply. Your first conversation will be with Alex, our AI recruiter.

Frequently Asked Questions

What is the salary for the Full-Stack Software Engineer role at alexai?
The listed salary for this Full-Stack Software Engineer position at alexai is USD 100K–250K/yr. This is an FullTime role.
Where is the Full-Stack Software Engineer position at alexai located?
This Full-Stack Software Engineer role at alexai is based in San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Full-Stack Software Engineer role at alexai full-time or part-time?
This is listed as a FullTime position. It is posted as a Full-Stack Software Engineer role in the Engineering department at alexai.
Which team or department does the Full-Stack Software Engineer at alexai belong to?
This Full-Stack Software Engineer position is part of the Engineering department at alexai. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Full-Stack Software Engineer position at alexai?
Click the "Apply Now" button on this page. You will be redirected to alexai's official application portal hosted on ashby where you can submit your application directly.
When was the Full-Stack Software Engineer job at alexai posted?
This Full-Stack Software Engineer position at alexai was posted on May 12, 2026. Apply as soon as possible — early applications are often reviewed first.
Full-Stack Software Engineer
alexai · 💰 USD 100K–250K/yr
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