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Open nowPosted 175 days ago

Founding Engineer - Elo

Pear VC107 open roles

Pay
$140,000 – $200,000 a year
Where
San Francisco
Work mode
Remote
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Your applicationOpen nowFounding Engineer - EloPear VC · San Francisco

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The clock on this job

Early applications get read.

13.7% of postings close within 7 days. Measured by our own scanner across the market. Pear VC postings stay open a median of 13 days.

Share of postings closed within
  1. 2.2%1 day
  2. 4.7%3 days
  3. 13.7%7 days
  4. 22.1%14 days
  5. 37.8%30 days
  6. 59.1%60 days
This job: posted 175 days ago

Pear VC median: 13 days open

The posting

Elo is the ad-network for consumer AI applications. We’ve gone from 0 to XXM users in our publisher network in 45 days of inception.

Background

With AI becoming the primary surface of interaction for internet users, it is inevitable that digital advertising will happen within AI experiences (including but not limited to chat).

Elo is aggregating supply across consumer AI apps to help them monetize their users via ads and help advertisers reach the right audience at the right moment.

We’re backed by top funds like PearVC https://pear.vc/ and Audacious Ventures https://audacious.co/ who’ve invested in billion dollar companies like Doordash and WorkOS https://workos.com/. We also have advisors from mobile ad-tech and large consumer AI companies helping us in our mission. Founder is a published researcher and has previously built AI infrastructure at Google.

Progress We’ve already solved the hardest cold start problem with ad networks: onboarding both advertisers and publishers. Now, we need to build and improve the core infrastructure to serve the most contextually relevant ads at the right moment.

Role Founding engineer who’ll help us design the engine for ad delivery inside AI experiences and supporting infrastructure. The role guarantees high equity and competitive compensation

What you’ll build

We’re already processing millions of requests per minute which is set to increase dramatically over the next few months.

You’ll work on:

1. Ad decisioning pipeline: candidate retrieval, scoring, filtering, and final ranking under strict latency SLAs

2. Publisher SDK: lightweight integration that AI app developers embed in hours, not days

3. Delivery infrastructure: pacing, frequency capping, budget management, and campaign throttling

4. Observability stack: real-time dashboards for auction win rates, fill rates, revenue, and latency percentiles

What we’re looking for

We look for evidence of technical excellence.

If you’ve built any of the following, we’d love to chat:

1. Your own AI agent harness or multi-agent workflow for complex tasks

2. Low latency network infrastructure and data pipelines serving millions of requests per second

3. Scalable and self-healing infrastructure with 1000s of compute workers spinning up and down with variable demand

4. High frequency trading systems

Or anything that you believe reflects high calibre of engineering design and low-level systems understanding.

You’re a good fit if you:

1. Care about your craft and operate ethically

2. Take extreme ownership of outcomes

3. Like to operate independently

4. Ship extremely fast and effectively use AI to accelerate your impact

5. Want to operate in a fun and social work environment

Apply and you’ll hear back in less than a day.

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