SOSO is seeking a freelance Senior Software Developer with full-stack expertise to help us build the next generation of AI-enabled experiences.

We craft hybrid digital-physical experiences, creating scalable platforms that foster meaningful connections in both physical and virtual spaces. Our technical foundation combines enterprise-grade software architecture with carefully crafted user experiences, producing work that excels in both performance and purpose.

As a Senior Full Stack Developer, you'll architect and build enterprise-grade software systems that power our award-winning digital installations and experiences. You'll work at the intersection of creative technology and scalable architecture, collaborating with designers, architects, and creative technologists to bring transformative experiences to life.

This is a freelance contract position with compensation ranging from $100-150/hr, based on experience and skill level. If you're passionate about working on exciting projects at the intersection of digital technology and physical space, we invite you to apply!

Your Role

As a Contract Senior Developer at SOSO you will:

Work with project managers to define technical requirements, outline system and software architecture, and build production timelines
Develop software prototypes to validate technical approaches
Build maintainable solutions designed for extended time horizons that can evolve with client needs
Work closely with designers to implement UI/UX specifications and interactive behaviors
Build high-performance front-end components that maintain design fidelity at scale
Design and implement scalable backend services
Architect and maintain SOSO's proprietary platform components (Relay, Sync, Phosphor)

The ideal candidate:

Backend Development: Node.js, MongoDB, PostgreSQL, Redis, Relational Data Modeling
Frontend Development: Vue, TypeScript, Three.js, Pixi, WebGL
Cloud & DevOps: Heroku, AWS, CI/CD pipelines, Git/PR workflows
Real-time Communication: WebSockets, Server-Sent Events, Distributed Systems
Implement AI integration patterns including LLM orchestration / pipeline architecture, and content generation
Design and build systems that leverage real-time AI for interactive experiences
Create robust patterns for AI content moderation and safety in public installations
Has a strong visual design aesthetic and strong typography skills
Has skills in implementing refined motion graphics
Considers how an experience works in a variety of contexts, screens, and media

Bonus points if:

You are passionate about design, animation, and user behaviors
You have experience in creating interactive physical environments
You have experience building with peripheral technologies such as RS485, industrial lighting protocols, and low level network programming

What We Offer

Benefits:

Generous vacation and PTO policy
Studios closed Christmas through New Years
Health insurance
401(k) with 4% company match
Maternity and paternity leave
Paid family and medical leave

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Contract Senior Developer