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Open nowPosted 478 days ago

Full Stack AI Engineer

Infinity11 open roles

Where
Remote
Work mode
Remote
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Your applicationOpen nowFull Stack AI EngineerInfinity · Remote

  1. YouYes, apply to this one.

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  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

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The clock on this job

Early applications get read.

11.8% of postings close within 7 days. Measured by our own scanner across the market. Infinity postings stay open a median of 26 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.8%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: posted 478 days ago

Infinity median: 26 days open

The posting

AI ENGINEER (CONTRACT-TO-HIRE)

Location: Remote (Global, EST working hours) Start Date: Rolling

Please apply using the provided form, candidates who directly email will not be considered.

ABOUT THE PROJECT

We're building AI-native engineering team within Infinity, a holding company building full-stack AI businesses. We support portfolio companies by:

- Rapidly prototyping new product ideas to validate markets

- Providing flex capacity during high-growth phases

- Maintaining and evolving the Gravity our in house software factory and agent hub that we use to build all software.

We’re not a dev shop. We’re a surgical team of builders who move fast, reduce ambiguity, and create leverage across a network of founders building with AI at the core.

THE ROLE

We’re looking for scrappy, sharp, execution-focused engineers who thrive in high-autonomy environments. You'll be deployed on fast-moving projects; from validating ideas in one-week sprints to helping scale production tools inside early-stage companies.

This is a contract-to-hire role. If there’s mutual fit, you’ll transition to a full-time or retainer-based role within the core team.

WHAT YOU’LL DO

- Build working prototypes of agentic AI applications, LLM workflows, and full-stack products

- Experiment quickly across frameworks, open source tools, and low-code stacks

- Interface directly with product thinkers and founders to distill ambiguous ideas into testable code

- Contribute to shared internal libraries and the Infinity Commons and add features to Gravity, our software factory platform.

- Occasionally embed with portfolio companies to support launches or unblock execution

WHAT WE’RE LOOKING FOR

Required:

- Fluency in Python and experience using AI toolkits and APIs

- Experience rapidly building and iterating on proof-of-concept or MVPs

- Comfort using a blend of commercial APIs, open source, and low-code tooling to get things done

- Strong problem-solving skills and analytical intuition

Bonus Points:

- Prior work with AI agents, and a deep familiarity with what it takes to make them work well in production environments.

- Experience with frontend development (React, Next.js, etc.)

- A background in a STEM discipline, data science, or quant-heavy engineering you'll need to be able to show the impact of your work with statistical significance

- Previous experience in a venture-backed startup or technical founder role

HOW WE WORK

- Asynchronous by default, with tight feedback loops and clear ownership

- High-trust, high-autonomy culture that values shipping, learning, and iterating

- Small, elite team of senior builders with experience across AI, product, and infrastructure

HOW TO APPLY

Send us:

- A short note in the application form on why this role fits you Links to past work, projects, or GitHub.

- Availability to start the contract phase

We’ll move quickly. If it feels like a fit, you’ll be coding real things with us within a week.

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