Software Engineer, Full Stack

Mexico City, Mexico City
Full-time
Visa Sponsorship

About the role

About Helios (YC W23)

Most software helps companies manage support and sales. At Helios, we're building systems that help companies run them.

We're building a new layer of AI-native operations infrastructure, systems that combine intelligent agents, orchestration, and real-time reliability to power sales and support inside real businesses. We work with banks, startups, and enterprise companies globally. Backed by Y Combinator, Accel, 1517 Fund, and Goodwater.

About the founder

Eric (CEO) previously founded on Holacasa, an end-to-end mortgage solution backed by Y Combinator, later pivoted into Helios. We started Helios because we saw how fragile current AI implementations are in real production environments, most AI agent companies break the moment volume goes from 100 to 10,000 conversations a day.

About the role

This is not a narrow role.

We're looking for someone who can move across engineering, infrastructure, and customer reality. Someone who can ship product, keep systems healthy, solve production problems, and help customers succeed on top of what we're building.

You will own:

  • The production runtime that powers our voice and WhatsApp agents
  • Reliability, observability, and on-call for live customer traffic
  • The abstractions that let us deploy new agents across customers without breaking the ones already in production

First 30 / 60 / 90 days

  • 30 days: Ship your first production change to a live customer agent. Document the current architecture, latency budget, and failure modes.
  • 60 days: Lead a meaningful architectural improvement to the agent runtime. Stand up an evals harness so we can ship voice changes without praying.
  • 90 days: Own the on-call rotation for production agents. Lead the architecture for our next enterprise customer.

What we're looking for

  • Strong in TypeScript / Node.js — event loops, streams, async internals
  • Comfortable with modern infrastructure
  • Excited by building something foundational in AI
  • Based in Mexico City (5 days a week in office)

About Helios

Create your AI workforce

Interested?

Let me introduce you to the founders.

Skip the process

Refer someone

Know someone great for this role?

Share your link. If they get hired through Standout, you get $3,000.

Job details

Salary

$30,000 - $55,000

Equity

0.5% - 1%

Location

Mexico City, Mexico City

Experience

0+ years

Company

NameHelios
IndustryB2B
Team Size3

Funding

Total raised

$4M

Last stage

Seed

Investors

Unusual Ventures
FFounders Inc.
Alumni Ventures

Founders

JS

Joe Scheidler

Co-Founder & CEO

JF

Joseph Farsakh

Co-Founder & President

BS

Brandon Smith

Co-Founder & CTO

Eric Yáñez

Eric Yáñez

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.