Founding Engineer (AI Startup) (5C0BE43)

Founding Engineer (AI Startup) (5C0BE43)

Full-Time No working from home possible
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Some engineers enjoy writing code. Others can't stop building.

If you've been programming since you were a teenager, spend your evenings experimenting with new technology, and get genuine satisfaction from shipping products, this role was written for you.

Referment is partnering with a venture-backed AI startup looking for one exceptional engineer to help build the next generation of AI-powered cybersecurity products.

You'll work directly with the founders and own features from customer problem through to production.

You'll enjoy this role if you...

  • Love building more than talking about building
  • Prefer shipping software over writing documentation
  • Can move between backend, frontend and infrastructure without thinking twice
  • Get excited by hard engineering challenges like building compilers, DSLs, or internal developer tools
  • Use AI every day, but don't rely on it to think for you
  • Enjoy solving messy customer problems instead of perfectly defined tickets

What You'll Be Building

  • You'll design complex backend architecture and systems.
  • Ship React interfaces.
  • Build internal developer tools and agentic consoles.
  • Improve databases and handle systems programming.
  • Debug production and deploy continuously.
  • Help shape both the product and the engineering culture.

What We're Looking For

  • Deep technical focus on hard engineering and complex backend architecture
  • Strong Python backend fundamentals with high-level application of tools like FastAPI, Django, or Flask
  • Senior-level technical sophistication and the ability to move beyond routine maintenance tasks
  • Verifiable track record of technical contributions and honest project claims (e.g. active GitHub or OSS presence)
  • React experience or willingness to work across the frontend
  • Startup mentality with genuine product ownership
  • Around 3-6 years' experience with a focus on engineering depth

Extra points for experience with:

  • Founding or leadership roles (e.g. Co-Founder or CTO)
  • Building internal developer tools, DSLs, or compilers
  • Multi-language proficiency (e.g. Go, C, or Rust)
  • Cybersecurity
  • Workflow orchestration (Prefect, Airflow)
  • High-growth SaaS

This probably isn't for you if...

  • Your focus is primarily on product management or innovation titles rather than hands-on engineering
  • You consider routine infrastructure maintenance to be your core focus area
  • You need detailed specs before starting work
  • You only enjoy one part of the stack
  • You avoid production responsibility
  • You're looking for a comfortable corporate engineering role
  • You're currently splitting your attention with another startup

Why join?

  • Competitive salary
  • Meaningful equity
  • One of the first engineering hires
  • Direct access to the founders
  • Huge ownership from day one
  • Build products that customers actually use

#Referment

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Founding Engineer (AI Startup) (5C0BE43) employer: Referment

Referment is an exceptional employer, offering a dynamic work culture that fosters collaboration and innovation. As a Finance Director, you will not only lead the finance function but also play a pivotal role in shaping the company's growth trajectory, with ample opportunities for professional development and advancement. Located in a vibrant B2B technology hub, the company provides a supportive environment where your contributions are valued and rewarded.

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Contact Details:

Referment Recruitment Team