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Infinity Constellation

Full Stack Founding AI Engineer

Infinity Constellation, New York, New York, us, 10261

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Founding Engineer Remote (Global) | Full-Time | Competitive Salary + Meaningful Equity

Website:

withradiance.com

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

About Radiance Radiance is a digital design agency powered by The SOURCE®. As you work, it works: streamlining operations, accelerating creative, and scaling your entire brand system.

We combine human‑crafted design with intelligent systems to help modern brands grow with clarity, creativity, and impact. Every project is crafted for long‑term value — not just assets, but infrastructure. Radiance delivers bold creative backed by strategic insight, made to perform across media, commerce, and customer experience.

At the center of it all is The SOURCE® — a proprietary platform that powers everything we do. It brings together design, AI, and automation into a single, adaptive system that grows with you.

Why This Role Exists We’re looking for a sharp, systems‑minded full‑stack engineer who builds with urgency, curiosity, and care. You’ll partner directly with the founders to translate ideas, client feedback, and strategic needs into real, production‑grade tools. This isn’t just a role for implementing specs — it’s for someone who thrives in ambiguity, sees the edge of a fuzzy idea, talks to users, and ships features that stick. As an early hire, you'll also help shape our foundational engineering principles and how we build as a team.

What You’ll Do

Architect and scale RAG pipelines, agent‑based systems, and LLM‑powered workflows

Fine‑tune large language models for structured data extraction and automation

Build developer‑friendly APIs and interfaces for web automation

Ship product features fast — with real usage and feedback

Work closely with the team and customers to build what matters

Stay ahead of the curve on LLM tools, embeddings, orchestration, and training

Create elegant, resilient systems that just work

What You Bring

Strong full‑stack engineering experience (Python backend + Vue or equivalent frontend)

A systems mindset — architecture, UX, and scalability are one conversation to you

Hands‑on familiarity with production level AI tooling: prompt design, agents, vector DBs, etc.

Clear, proactive communication — you explain not just what you’re doing, but why

Autonomy — you move quickly and make things real

Pragmatism — you build what works, not just what’s elegant

Bonus Points

Built LLM‑based agents, fine‑tuned models, or designed RAG pipelines in production

Contributed to open‑source projects in AI, ML, or developer infrastructure

Experience with AWS, Postgres, and scalable backend systems

Trained or fine‑tuned foundation models from scratch or with custom data

Worked on web automation, scraping, or structured data extraction workflows

Why Join Radiance?

Founding seat. Help define the product and shape how we build from the ground up

Fast feedback loop. Internal users are power users — what you ship gets used

Design‑forward culture. Work alongside world‑class strategists and brand thinkers

Remote‑first, async‑friendly. High trust, low overhead

Momentum. We ship features in days — not quarters

Competitive salary + meaningful equity

Backed by invisible.co, and founded by repeat entrepreneurs

Interview Process We keep things human, clear, and practical. The process includes a few conversations to get to know each other and either:

A short project (done on your own time, then discussed in a review call)

Or a collaborative working session, where we build something together

We’ll align on the format that works best for you.

Radiance Is for You If

You think in systems and love building from zero

You care about clean UX, smart architecture, and long‑term impact

You want to work closely with founders and users to shape the product

You’re excited by creative tools, AI workflows, and fast iteration

You thrive in autonomy, take initiative, and move with purpose

Radiance Is Not for You If

You need detailed specs and tightly scoped tasks

You prefer to stay in your lane and avoid user conversations

You’re not interested in design systems or GenAI

You’re optimizing for predictability over ownership

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