Senior Fullstack Developer

Company:

Stealth Startup

Location:

Seniority:

Senior

Salary:

USD 130000 - 150000

Skills:

Back-end, Front-end

Work model:

Remote

Type of employment:

B2B

Why join us?

You’ll be at the forefront of AI agent development in a small, agile startup environment. Here, you’ll collaborate directly with top-tier AI teams, free from the bureaucracy of large corporations, and contribute to a fast-growing, profitable company where your work makes a real and meaningful impact.

You’ll have the chance to work on an innovative AI agent product, with access to unique datasets and workflows. Enjoy high autonomy and flexible working hours, while exploring technical growth opportunities across backend, frontend, DevOps, and UX. Your contributions will directly shape the product, giving you immediate feedback on your impact. Join a flat, agile team working closely with the founders and leading AI experts, and be part of building something truly groundbreaking.

Role Overview:

As a Senior Fullstack Developer, you will work on our data annotation platform. You’ll be involved in the full product lifecycle, from design and implementation to testing and deployment.

Your work will include:

  • Backend development with Python + Django

  • Frontend development

  • Working within a DevOps culture, ensuring best practices

  • Building and enhancing platform functionality for AI agent training data

  • Supporting QA processes

 

What makes this role exciting:

  • Fast-paced environment with frequent changes in client requirements

  • Immediate feedback on deployed changes

  • High autonomy and flexibility in organizing your work

Required Skills & Mindset:

We are looking for a versatile and pragmatic Engineer who is passionate about technology, takes ownership, and is eager to contribute across the entire product lifecycle. While we currently leverage a specific stack, we highly value the mindset and adaptability to learn new tools quickly.

  • Core Backend Expertise: Proven experience in Backend development is essential. While our primary stack is Python (Django/DRF), strong expertise in another language (e.g., Java, Go,) with a willingness to cross-train is absolutely welcome.
  • Frontend Fundamentals: Familiarity with modern JavaScript frameworks. Direct experience with Svelte is a plus.
  • Product Contributor Mindset: A proactive willingness to contribute beyond core development, including:
    • Active participation in DevOps practices (CI/CD, infrastructure automation, monitoring).
    • Contributing to User Experience (UX) design discussions and implementations.