Software Engineer (Front-end / React)

1851 Labs; Toronto; On-site; CAD 100,000 - 125,000; Full time

Job summary

A leading AI company in downtown Toronto seeks a skilled full-stack engineer to define product features for a rapidly growing platform. You will be responsible for ownership of end-to-end systems, focusing on user experience and real-time AI streaming. Mastery of React Native and backend technologies such as Node.js and Python are crucial. The role offers significant equity and a fast-paced, innovative environment where your work will reach millions.

Benefits

Generous health, dental, and vision benefits

Unlimited PTO

Paid parental leave

Relocation support for top candidates

Qualifications

• Full-stack developer fluent in modern frameworks.
• Mastery of React Native and performance optimizations.
• Experience with Node.js and Python APIs essential.

Responsibilities

• Own end-to-end systems and build instant experiences.
• Ship iterations quickly and drive product metrics.
• Lead technical architecture and mentor team members.

Skills

Full-stack fluency across modern frameworks and infra

React Native mastery with deep performance optimization

TypeScript

GraphQL

Real-time systems

Database management

Tools

Node.js

Python

Next.js

Tailwind

Job description

Mission

Make creation the world’s favorite entertainment.

About GenTube

Imagination to images in milliseconds. Already 10M+ monthly creations and accelerating. We believe AI creation is the next social medium — as big as video, as habitual as scrolling.

The Opportunity

We’re at the start of a generational shift. Just as YouTube unlocked the world’s videos and TikTok turned short-form into the default entertainment, GenTube is making AI creation the medium of our time. A billion people will move from passive consumption to active creation — and you’ll be one of the engineers building the rails.

The Founders

Josh and Mo scaled platforms to 100M+ users and led a $150M+ AI exit to Microsoft. Now they’re building the defining consumer AI company of the creation era. We’re well-funded with a long runway and you’re joining the founding team.

The Role

You’ll own product-defining features used by millions daily. Build systems that feel instant. Your code will set the standard for how people create, share, and play with AI globally.

What You’ll Do

• Own end-to-end systems: React Native UI, Next.js infra, Node/Python APIs, AI streaming, databases
• Ship loops that feel like magic: sub-50ms taps, real-time AI streaming, intuitive experiences
• Build infra that scales: from 10M+ monthly creations today to 1B+ tomorrow
• Move at founder speed: daily deploys, 24-hour experiments
• Drive by metrics: session time, creates per DAU, retention. Optimize what moves the graph
• Grow into technical leadership — setting architecture, scaling systems, mentoring

What We’re Looking For

• Full-stack fluency across modern frameworks and infra
• React Native mastery with deep performance optimization
• Frontend: TypeScript, React internals, Next.js SSR/ISR, Tailwind
• Backend: Node/Python APIs, GraphQL, caching, real-time systems
• Prototype to production, fast
• Bias toward speed and iteration, balanced with craft
• You think in loops — retention, virality, engagement

Bonus

• Built AI products or shipped with ML APIs (Groq, Replicate, etc.)
• Real-time streaming interfaces with sub-second latency
• Open source/projects that show technical creativity

Why Join

• Be Early — Your work defines the product.
• Own It — Zero layers. Ship daily. Reach millions.
• Learn From Operators — Founders who’ve scaled to 100M+ users.
• Win Big — Significant equity, competitive comp, asymmetric upside.
• Lead the Wave — Consumer X AI is the next global platform shift.

Details

• Location: Toronto — downtown office, high-energy, creative hub
• Benefits: We offers generous health, dental, and vision benefits, unlimited PTO, paid parental leave, and relocation support as needed.
• Visa: Available support for top candidates

If you want to help define the medium that follows video and social, this is the moment. Join us before GenTube becomes the next billion-person creation platform. We encourage you to apply even if you do not believe you meet every single qualification.