AI Engineer | Full-Stack Developer | Production SaaS Builder

I build and ship AI-powered applications. Check out my live work:

• 🔗 e-waive.com - Electronic waiver management SaaS (AWS deployment, payment integration)
• 🔗 esl.sletchersystems.com - AI-powered ESL platform with PayFast integration
• 🔗 sletchersystems.com - My portfolio & company site

📄 View My CV | 📧 wsletcher@gmail.com | 📍 Port Elizabeth, South Africa

Production Experience:

• ✅ Full-stack SaaS applications with payment integration (Square, PayFast)
• ✅ AWS deployments (Amplify, Elastic Beanstalk, RDS, load balancing)
• ✅ AI-powered applications using LLMs, vision models, TTS/STT
• ✅ Authentication systems (JWT, Supabase)
• ✅ Real-time data processing and vector databases

Technical Capabilities:

• 🤖 LLM Integration: LangChain, LangSmith, CrewAI, LlamaIndex
• 🔧 Inference: Groq, NVIDIA NeMo, OpenRouter, Ollama (local models)
• 💻 Full-Stack: React, Node.js, TypeScript, Electron
• 🗄️ Databases: PostgreSQL, MongoDB (vector), Redis, SQL
• ☁️ Cloud: AWS, Vercel, Docker
• 🎨 AI Media: Image generation, voice cloning, document processing
• 🔬 ML: Model fine-tuning, quantization, GAN training, benchmarking

I'm seeking a junior to mid-level role where I can:

• Contribute to production AI/ML systems
• Learn from experienced engineers
• Ship code that solves real problems
• Work remotely with a collaborative team

Immediately available. Ready to start.

Explore my repositories to see:

• 🔹 AI agent implementations and LLM integrations
• 🔹 Full-stack application builds
• 🔹 Rapid prototyping and deployment examples
• 🔹 Document processing and RAG systems

Check out my pinned repositories below ⬇️