Senior Full Stack Engineer - Radiance at Infinity (Remote)
Role details
Equity · Remote-First Culture · Async-Friendly Environment · Direct Influence On Product And Company Direction
Summary
Join Radiance as a founding Full Stack Engineer to architect and build The SOURCE®, a scalable platform blending design, AI, and automation. You will translate creative workflows into technical systems, define product architecture, and drive the transition from services to a SaaS model.
Job description
MEET RADIANCE
The Source® of all your creative collateral.
Radiance is a digital design agency powered by The SOURCE®, a proprietary Creative OS that aligns every asset, message, and moment into one adaptive brand system.
We combine human-crafted design with intelligent systems to help modern brands operate with clarity, speed, and cohesion. Every engagement we deliver is not just creative output, but infrastructure: systems that scale as our clients grow.
At the center is The SOURCE®, a platform blending design, AI, and automation into a single evolving system for brand truth, execution, and growth.
We are backed by Infinity Constellation, the first AI holding company, and are building something category-defining at the intersection of brand, systems, and intelligence.
WHY THIS ROLE EXISTS
Radiance is moving from services-first → platform-powered.
We are looking for a Senior Full Stack Engineer to help architect, build, and evolve The SOURCE® from a powerful internal system into a scalable platform that supports both our agency workflows and future SaaS expansion.
This is not a “ticket-taking” role. This is a role for someone who wants to shape the product, the architecture, and the technical philosophy from the ground up.
You’ll work directly with the founder to translate creative workflows, brand logic, and operational complexity into elegant systems that compound over time.
WHAT YOU’LL DO
Platform & Product Architecture
- Design and own the technical architecture of The SOURCE®
- Translate creative, brand, and agency workflows into scalable systems
- Build a platform that supports services today and SaaS tomorrow
- Make pragmatic decisions about build vs buy vs automate
Execution & Systems
- Ship fast, iterate often, and prioritize leverage over perfection
- Build internal tools that reduce scope creep and operational drag
- Integrate AI, automation, and workflow tooling where it actually adds value
- Establish technical standards, documentation, and patterns early
Partnership & Leadership
- Act as a thought partner to the founder on product vision and sequencing
- Help define what Radiance should and should not build
- Lay the groundwork for future engineering hires and contributors
- Own outcomes, not just code
WHAT YOU BRING
- 6–12+ years experience in engineering, product, or technical architecture roles
- Experience building platforms or internal systems from zero to v1 (or beyond)
- Strong product intuition: you think in systems, not features
- Comfort working in ambiguity with evolving requirements
- Ability to translate non-technical needs into technical solutions
- Pragmatic, opinionated, and execution-focused
- Experience with modern web stacks, APIs, automation, and AI tooling
- Bias toward leverage, simplicity, and compounding value
MUST-HAVE HARD SKILLS (NON-NEGOTIABLE)
- FULL-STACK WEB DEVELOPMENT (PRODUCTION-GRADE)
- Frontend: React / Next.js (or equivalent modern framework)
- Backend: Node.js / Python (FastAPI preferred) or similar
- REST + basic GraphQL understanding
- Authentication, permissions, role-based access
- Handling real users, real data, real edge cases
- SYSTEMS THINKING & DATA MODELING
- Designing relational and/or hybrid schemas (Postgres + JSON)
- Modeling entities like:
- Brands
- Assets
- Campaigns
- Messaging hierarchies
- Versions / approvals / history
- Understanding how systems evolve without breaking
- WORKFLOW AUTOMATION & TOOL INTEGRATION
- Integrate tools via APIs (Stripe, Jira, Webflow, CMSs, CRMs)
- Use automation tools (Zapier, Make, n8n, Temporal, etc.)
- Design async workflows (approvals, handoffs, notifications)
- Build internal dashboards and admin tools
- AI / LLM PRACTICAL IMPLEMENTATION
- Prompt engineering for structured outputs
- Embedding LLMs into workflows
- Using vector databases (Pinecone, Weaviate, Supabase, etc.)
- Designing guardrails for brand voice + consistency
- Knowing when NOT to use AI
- SHIPPING MENTALITY
- Scope ruthlessly
- Ship v1 fast
- Iterate with live users (your team first)
- Make tradeoffs without paralysis
BONUS POINTS
- Experience building tools for agencies, creative teams, or knowledge workers
- Exposure to AI workflows, LLMs, or automation systems
- Experience scaling internal tools into external-facing products
- Interest in brand, design, storytelling, or creative systems
- Prior founding or early-employee experience
WHY JOIN RADIANCE
- Founding technical seat in a platform-led creative company
- Direct influence on product, architecture, and company direction
- Build something that blends brand, creativity, and intelligence
- Move fast without corporate drag
- Remote-first, async-friendly, outcomes-driven culture
- Backed by Infinity Constellation with long-term ambition
RADIANCE IS FOR YOU IF
- You want to build systems that compound
- You enjoy shaping products from first principles
- You care about how humans actually work, create, and decide
- You like autonomy and responsibility more than structure
- You want equity in what you build
RADIANCE IS NOT FOR YOU IF:
- You want highly defined specs and long planning cycles
- You prefer maintaining existing systems over creating new ones
- You’re looking for a narrow engineering role
You’re uncomfortable with ambiguity or iteration
Why work at Infinity
- Culture highlights: The company explicitly defines its culture through a set of published principles: “Speed Over Perfection,” “Aggressive Yet Kind,” “Our Word Is Our Bond,” “Move Fast,” “Tell Us the Truth,” and “Figure It Out.” Emphasis on high standards, direct feedback, and extreme ownership without bureaucracy.
- Remote/hybrid/office policy: Mostly remote-first across the US (many jobs marked “Remote, USA”); physical HQ in New York, but employees work from home; some roles in Las Vegas
- Notable perks or engineering culture: Access to a shared brain across the portfolio — playbooks, customer intros, and lessons from every company; founders get back-office leverage so they focus on product and customers; engineering roles involve building AI-native products from scratch using cutting-edge applied AI
- Who thrives here: Self-starters who move fast, ship real products, iterate quickly, and want to be part of building category-defining businesses rather than maintaining existing ones
- Known downsides from culture page: High expectations — “We push hard. We have high standards.” — and a rejection of perfectionism: “Paralysis is worse than a wrong call you can reverse.”