Full-Stack Developer - AI-Powered SaaS Platform (D50 AI)

About D50 AI

D50 AI is building the future of AI-powered marketing & business automation. We're a fast-growing startup that combines cutting-edge AI technology with practical business solutions.

We're looking for an exceptional Full-Stack Developer who can take ownership of the entire platform and drive it forward independently.

The Role

Position: Full-Stack Developer (Full-Time, Hybrid)

Location: Dubai, UAE

Compensation: Competitive salary + equity

Start Date: Immediate

You'll be the lead developer responsible for:

• Building and maintaining our multi-engine SaaS platform
• Implementing new features across Lead Gen, Content, and AI Agent engines
• Integrating external APIs (VAPI, HeyGen, Stripe, etc.)
• Deploying and managing production infrastructure
• Working directly with the founder to shape product direction

This is a high-impact role where you'll have full ownership and autonomy.

Key Responsibilities

Development (70%)

• Implement new features across all engines
• Build tRPC procedures and frontend UI
• Integrate external APIs (VAPI, HeyGen, Workable, etc.)
• Write database migrations and queries
• Optimize performance and scalability

Infrastructure (15%)

• Deploy to Railway
• Manage environment variables and secrets
• Monitor production health
• Debug and fix issues
• Set up CI/CD pipelines

Collaboration (15%)

• Work directly with founder on product direction
• Document code and architecture
• Review and refactor existing code
• Communicate progress and blockers
• Participate in planning and strategy

✅ Must-Have Qualifications

1.5+ years of full-stack development experience

2+ years working with the exact tech stack listed above (React, TypeScript, tRPC, Drizzle)

3+ years building AI agents or agentic systems

4.Proven experience with complex SaaS platforms (multi-tenant, payments, integrations)

5.Strong portfolio of production applications you've built

6.Excellent English communication (written and verbal)

7.Self-starter who can work independently without constant supervision

8.Problem solver who can debug complex issues across the stack

9.Fast learner who can pick up new APIs and technologies quickly

10.Available full-time (40+ hours/week)

Nice-to-Have Qualifications

• Experience with Inngest (background jobs)
• Experience with VAPI or Bland AI (AI calling platforms)
• Experience with HeyGen (AI avatar videos)
• Experience with Stripe Connect (marketplace payments)
• Experience with OpenClaw or Puppeteer (browser automation)
• Experience with LangChain or LangGraph (agent frameworks)
• Experience with MongoDB and MySQL together
• Experience with Railway deployment
• Experience building recruitment/hiring tools
• Experience building content creation tools
• Experience building lead generation tools

What Makes You Stand Out

• You've built and deployed AI agents in production
• You've worked on multi-engine SaaS platforms before
• You can show us GitHub repos of complex projects you've built
• You have experience with Manus, Cursor, or Claude Code
• You've integrated 10+ external APIs in a single project
• You've managed 200+ database tables in production
• You've built marketplace platforms with payments
• You're comfortable working with both SQL and NoSQL databases
• You can work independently and make architectural decisions
• You're passionate about AI and automation

Automatic Disqualifiers

We will NOT consider applications if:

• ❌ You don't have AI agent experience
• ❌ You haven't worked with our tech stack (React, TypeScript, tRPC, Drizzle)
• ❌ You don't answer ALL screening questions
• ❌ You provide generic/copy-paste answers
• ❌ You can't provide portfolio links
• ❌ You're not available full-time
• ❌ You can't start within 2 weeks
• ❌ You don't have strong English communication skills

Ideal Candidate Profile

You are:

• A senior full-stack developer with 5+ years experience
• An AI agent enthusiast who's built autonomous systems
• A fast learner who can pick up new technologies quickly
• A problem solver who thrives on complex challenges
• A self-starter who doesn't need hand-holding
• Passionate about AI and automation
• Excited about startups and high-growth environments
• Available immediately and ready to hit the ground running

You have:

• Built production SaaS platforms with payments and integrations
• Worked with complex databases (100+ tables)
• Integrated multiple external APIs (10+)
• Built AI agents that make decisions autonomously
• Used AI coding tools (Manus, Cursor, Claude Code, etc.)
• A strong portfolio of projects you can show
• Excellent communication skills (English)
• A growth mindset and hunger to learn

You want:

• High impact - your work matters
• Autonomy - you own the product
• Growth - become CTO as we scale
• Cutting-edge tech - work with latest AI
• Remote flexibility - work from anywhere
• Equity stake - share in company success

How to Apply

Send your application to: div@d50.ai

Subject Line: "Full-Stack Developer - [Your Name]"

Include:

1.Answers to ALL 10 screening questions

2.Your resume/CV

3.Links to 3 portfolio projects

4.Links to your GitHub, LinkedIn, and personal website (if any)

5.A brief video introduction (2-3 minutes) explaining:

• Who you are
• Your experience with our tech stack
• The most complex AI agent you've built
• Why you want to work at D50 AI

Applications without complete answers will be automatically rejected.

About the Founder

Soltane is an entrepreneur and AI enthusiast who's building D50 AI to revolutionize marketing & business automation. He's founded a well established marketing, recruitment and sales development company worked with AI agents extensively and uses tools like Manus, Codex, and Claude Code daily. He's looking for a technical partner who can take the platform to the next level.

Company Stage

• Stage: Early-stage startup (pre-seed)
• Product: Live in production with paying customers
• Revenue: Growing MRR
• Team: Small (founder + contractors)
• Funding: Bootstrapped (profitable)
• Growth: Expanding rapidly

• Why Join Now?
• Ground floor opportunity - shape the product from day 1
• High equity stake - get in before Series A
• Technical ownership - you own the entire stack
• AI revolution - be part of the agentic automation wave
• Fast growth - company is scaling quickly
• Direct impact - your code affects real customers
• Career acceleration - CTO path within 12 months

Ready to Apply?

If you meet ALL the requirements and are excited about building AI-powered automation, we want to hear from you!

Apply now: div@d50.ai

Questions? Email us at div@d50.ai

D50 AI is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Last Updated: February 14, 2026

Job ID: FSDEV-001

Department: Engineering

Reports to: Founder/CEO

Requirements

️ Required Tech Stack Experience

Frontend

• ✅ React 19 (with hooks, context, modern patterns)
• ✅ TypeScript (strong typing, interfaces, generics)
• ✅ Tailwind CSS 4 (utility-first styling)
• ✅ shadcn/ui (component library)
• ✅ Wouter (routing)

Backend

• ✅ Node.js (Express 4)
• ✅ tRPC 11 (end-to-end type safety)
• ✅ Drizzle ORM (database queries and migrations)
• ✅ Superjson (serialization)

Database

• ✅ MySQL/TiDB (relational database)
• ✅ MongoDB (document database)
• ✅ Complex schema design (200+ tables)

Infrastructure

• ✅ Railway (deployment platform)
• ✅ AWS S3 (file storage)
• ✅ GitHub (version control, CI/CD)

APIs & Integrations

• ✅ Stripe (payments, subscriptions, webhooks)
• ✅ OAuth (Supabase, Google, GitHub)
• ✅ RESTful APIs (integration with external services)
• ✅ Webhooks (event-driven architecture)

Testing & Quality

• ✅ Vitest (unit and integration testing)
• ✅ TypeScript strict mode (type safety)
• ✅ Code review (best practices)

CRITICAL REQUIREMENT: AI Agent Experience

This is non-negotiable. You MUST have hands-on experience with:

Agentic Programming

• ✅ Building autonomous AI agents that make decisions
• ✅ LLM integration (OpenAI, Anthropic, etc.)
• ✅ Tool calling / Function calling patterns
• ✅ Agent workflows (planning, execution, reflection)
• ✅ Multi-agent systems (coordination between agents)

AI Development Tools

Experience with at least 2 of these:

• Manus (AI agent platform)
• OpenClaw (browser automation agents)
• LangChain (agent frameworks)
• AutoGPT / AgentGPT (autonomous agents)
• Cursor / Codex / Claude Code (AI coding assistants)

Benefits

Compensation & Benefits

• Competitive salary based on experience
• Equity stake in the company (0.5%-2%)
• Growth opportunity - become lead as company scales
• Cutting-edge tech - work with latest AI tools
• High impact - your work directly affects product success
• Direct access to founder - no bureaucracy

What We Offer

Technical Growth

• Work with cutting-edge AI technology
• Build autonomous agents that make real decisions
• Integrate with 20+ external APIs
• Manage complex multi-engine architecture
• Learn from founder with deep AI expertise

Career Growth

• Start as Lead Developer
• Become CTO as company scales
• Equity stake in fast-growing startup
• Direct impact on product direction
• Build and lead team as we grow

Culture

• Fast-paced startup environment
• High autonomy and ownership
• Direct access to founder
• No bureaucracy or politics
• Focus on shipping and impact