David R.
San FranciscoCA
100% Job Success
Top Rated

Principal Software Engineer | AI RAG Expert | Ex-TikTok, Salesforce

Hi I’m David. I’m a Principal Software Engineer with over a decade of experience working at startups and big tech companies in the Bay Area, most recently TikTok and Salesforce. At TikTok I was a leader on several teams, including user growth focusing on the new user FYP recommendations engine. 🔵 Expert-Vetted top 1% at Upwork 🔵 I'm experienced in building AI, AI RAG, Ad Tech, Mar Tech, CRM, and other business software. 🔵 Core backend developer for multiple Billion+ DAU applications Can help your business with: ⭐️ Developing high-performance backend architectures using the latest cloud technologies. ⭐️ Implementing DevOps strategies for streamlined and secure software deployment. ⭐️ Building scalable CRM and marketing solutions with dynamic integration frameworks. ____________________________________________________________________________________________ As a seasoned Software Engineer focused on AI, backend systems, DevOps, and full-stack development, I am dedicated to empowering startups and established enterprises to exceed their technological objectives. If you're aiming to surpass industry standards and innovate at scale, you've found the right expert! Why work with me? Here are the facts: 🦖 10+ years of hands-on industry experience 📍 Located in the heart of Silicon Valley, San Francisco, CA, USA 🛠️ Mastered technologies including Generative AI, RAG, AWS, Spring Framework, Kafka, Go, and MySQL 🌟 Led key initiatives at TikTok, enhancing user growth onboarding and developing a comprehensive SAAS CRM platform 🚀 Played a pivotal role at Salesforce leading AdTech projects and real-time data processing advancements 📈 Built and managed systems with ultra-high throughput and complex data pipelines 🔗 Facilitated dynamic integrations and machine learning model implementations for lead scoring and actionable insights ___________________________________________________________________________________________ Skillset: 🧠 Generative AI (OpenAI, ChatGPT, API integration, GPT-3.5, GPT-4, TensorFlow, OpenCV, Python, Retrieval Augmented Generation, PyTorch, LangChain, Open-source LLMs Mistral AI, LLaMA2, WizardLM, Falcon LLM) 📊 Backend Engineering Mastery (Java, Spring Boot, Spring Framework, Go) 💡 Expert in Cloud and Big Data (AWS, Apache Hive, Kafka, Redis, DynamoDB) 🔧 DevOps Excellence (Terraform, Amazon EC2, CDN, Puppet, Networking) 🔄 Full-Stack Development Proficiency (Java, Python, TypeScript, Node.js, React) 🗄️ Database Architecture and Design (MySQL, Database Scaling, Performance Optimization) 🤝 Leadership and Team Collaboration (Tech Lead, Cross-Functional Team Management) 🎛️ Backend Framework Expertise (Django, Flask, Play Framework) 🛠️ Infrastructure and Deployment (Kubernetes, Nginx, Amazon RDS, Amazon Lambda) 📈 Real-time and Large-Scale System Design (High QPS API Design, Real-time Segment Processing) 📜 Certifications (AWS Certified Solutions Architect, CCNA) ___________________________________________________________________________________________ If you're looking for a proven technology leader who can navigate the complexities of your backend systems and scale your infrastructure to meet tomorrow's demands, let's connect and explore how we can achieve your vision together.

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  • Advertising Platform
  • Golang
  • Marketing API Integration
  • CRM Software
  • Data Ingestion
  • Spring Framework
  • Google Cloud Platform
  • Network Engineering
  • CRM Development
  • Java
  • Django
  • Salesforce CRM
  • MySQL