Hire the Best NoSQL Developers in California

I'm a web developer based out of San Diego CA! I have particular strengths in: - Front-end UI development with react HTML5 CSS3 and javascript, - Back-end development using Node.js, and Express.js, - Database design and integration using NoSQL(mongoDB) and SQL, - Comfortable with git flow and github's co-pilot. I deliver clean and concise code and I'm a great collaborator in not just building but coming up with features that will set your project above the rest!

⭐ Expert-Vetted Top 1% AI Consultant on Upwork ⭐ Experienced AI Consultant with 10+ years working in top-tier research with MIT professors & founding 2 VC-backed startups (over $1M of entrepreneurial insights and lessons learned). I've helped 50+ businesses make efficiencies and scale through AI: sfailabs (dot) com Recent business case studies: ⭐ AI transformation for a $2B private equity firm for their sales & marketing pipeline. ⭐ Helped a healthcare team cut admin processes by 40% through LLM-driven automation ⭐ Guided an enterprise finance department to build their proprietary AI copilot. ⭐ Designed an AI roadmap for a construction firm to streamline project documentation My services: 🎨 AI Architecture Design 🚀 AI Development (Agents, Platforms, Products) 🔍 AI Commercialization Advising 🤖 AI Strategy for Market Trends and Insights 🧠 CTO | Tech advisor | Consultant – I can join your team on a partial basis How I can help: 💼 Identify your best AI opportunities in your business or market 🧠 Design and build your custom AI (agent, platform, product) 💸 Launch your AI to maximize profit & impact First-author on AI conference papers (ICRA, AAAI, ICCM) and US Patent holder #405505-561P01US. I obtained a M.S. of Computer Science from Brown University, later awarded a Research Fellowship by the National University of Singapore. Founder of VC-backed AI companies with diverse industry applications. Sharing Knowledge in: ✅ Generative AI LLMs, AI Agents, RAG, LangChain, LangGraph, LlamaIndex, Vector Databases, Prompt Engineering, Tool / Function Calling, Structured Outputs, MCP Integrations, Multi-Agent Systems, Autonomous AI Workflows, Fine-Tuning & PEFT (LoRA, QLoRA), Hugging Face, OpenAI GPT-5.5, Claude Opus / Sonnet 4.x, Gemini 3.x, Llama 4, Mistral Large / Medium, Multimodal Models, Diffusion Models, AI Evaluation, Guardrails, and Hallucination Detection. ✅ Machine Learning & Neural Networks Transformers, GANs, VAEs, GNNs, CNNs, LSTMs, Bayesian Models, Random Forests, and SVMs using PyTorch, TensorFlow, and Scikit-Learn. ✅ Data & Analytics Regression, Classification, Clustering, Feature Engineering, Validation, and Advanced Statistical Analysis for AI-driven insights. ✅ Cloud & MLOps AWS, Azure, GCP, Docker, Terraform, CI/CD, GitHub Actions, MLflow, DVC, and scalable model deployment pipelines. ✅ Backend & Infrastructure API Design, Authentication, Microservices, Databases (SQL, NoSQL, Neo4j, BigQuery), and ETL Pipelines. ✅ Project Management Agile Project Management, Roadmaps, Technical Documentation, and Cross-Functional Team Leadership. ✅ Programming Languages Python, JavaScript, TypeScript, C#, C++, SQL. ✅ Edge & Hardware Systems Edge AI, GPU/TPU Optimization, Data Streaming, and Video Processing (H264, H265, AV1).

👑𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 | 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I am an expert Full Stack Developer with over 12 years of experience in building scalable, high-performance web and mobile applications. With a deep understanding of modern frameworks and technologies such as Node.js, Python, and FastAPI, I have consistently delivered innovative solutions to complex challenges, working across the full stack to build end-to-end solutions. As a top 1% Expert-Vetted Talent, I’ve been pre-screened by industry professionals and talent managers to ensure I meet the highest standards of technical expertise and quality. Throughout my career, I’ve had the privilege of working in dynamic, high-impact roles at some of the most renowned tech companies, where I gained extensive experience in leading engineering teams and architecting advanced systems. 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 1- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 Spearheaded large-scale, cloud-based software systems that supported Microsoft’s enterprise solutions, focusing on security, performance optimization, and user experience. Led cross-functional teams to implement key features for Microsoft Azure and Office 365. 2- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 Contributed to the core engineering teams responsible for Facebook’s backend services, handling millions of active users and optimizing real-time data processing. Played a pivotal role in building scalable APIs, improving system performance, and enhancing user experience. 𝟯- 𝗟𝗲𝗮𝗱 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗛𝗲𝗹𝗹𝗼𝗴𝗼𝘃 𝗔𝗜 Directed a team to build AI-powered government solutions, improving efficiency and accessibility for public services. Collaborated with stakeholders to design innovative features while ensuring system reliability and scalability. 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 1- Backend Development: Skilled in Node.js, Python, FastAPI, and Express.js for building scalable APIs and microservices. 2- Frontend Development: Experienced with React.js, Vue.js, and HTML/CSS for creating responsive web interfaces. 3- Mobile Development: Expertise in React Native and Flutter for cross-platform mobile app development. 4- Cloud & DevOps: Proficient in AWS, Azure, Google Cloud, Docker, Kubernetes, and CI/CD for scalable deployment. 5- Database Management: Strong in relational and NoSQL databases like PostgreSQL, MySQL, MongoDB, and Redis. 6- Agile & Leadership: Experienced in leading Agile teams, driving project success, and mentoring junior developers. 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I am comfortable working across a variety of time zones and can adapt to your team’s working hours, ensuring seamless collaboration no matter where you're based. Whether you need overlapping work hours or full-time availability, I am open to flexible arrangements that align with your team’s needs. 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆, 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I have a proven track record of building high-performance systems that scale efficiently, ensuring long-term stability and performance. I am committed to delivering robust solutions that meet business goals while optimizing user experience. 𝗙𝗮𝘀𝘁-𝗣𝗮𝗰𝗲𝗱 & 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: I thrive in fast-paced environments and understand the importance of meeting deadlines without compromising on quality. I take a results-driven approach to development, always focusing on delivering value quickly and effectively. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗧𝗲𝗮𝗺 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: Throughout my career, I’ve led multiple cross-functional teams, ensuring strong collaboration and clear communication at all stages of development. Whether working as a lead engineer or as part of a team, I take an active role in mentoring and guiding junior developers to achieve their full potential. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 & 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗟𝗲𝗮𝗿𝗻𝗲𝗿: I am passionate about staying ahead of the curve in an ever-evolving tech landscape. My curiosity drives me to constantly explore new tools, technologies, and techniques, so I can apply the best possible solutions to each project I undertake. 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿! With expertise in Full Stack Development, cloud solutions, and Agile, I offer flexible timezone availability and a commitment to delivering high-quality, scalable applications, ready to collaborate and drive results. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, Senior Software Engineer, Node.js, Python, FastAPI, React.js, Web Development, Mobile Development, Backend Development, Frontend Development, Full Stack Architecture, API Development, RESTful APIs, Microservices, Cloud Computing, AWS, Azure, Google Cloud, Docker, Kubernetes, CI/CD, Continuous Integration.

Check out my YouTube tutorial channel! youtube.com/@tattedcodementor A solution-focused and technically competent Full-Stack MERN Software Developer, highly experienced in JavaScript, jQuery, React, React Native, Redux, MERN, MEAN, REST APIs, AWS (Ex. EC2, S3, Lambda, Serverless-servers, etc...), database administration, and other technologies, implementing the best strategies that improve workflows, services, and teams. Having architected and developed technical solutions (see above referenced website for example of core competencies), I excel at driving all phases of projects by transforming simple requirements into quantifiable growth and revenue, building and configuring secure products, visualizing, and delivering expected results. Committed professional, highly organized, capable to work under pressure with progressive teams to implement solutions that perform. I've built numerous mobile & web applications solely on my own (the entire lifecycle both front/back-end). Some of these examples that can be found in my 'portfolio' section on Upwork are sometimes over 100 pages of completely dynamic & live data fully demonstrating my abilities as a Senior level software engineer showcasing my skills & why you should pick myself over other dev's on Upwork. You may have to pay more but your work will actually get done and be quality, utilizing 'best practices' with a focus on continuous delivery of high quality code.

𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗔𝗜 𝗱𝗼𝗲𝘀𝗻'𝘁 𝗰𝗼𝗺𝗲 𝗷𝘂𝘀𝘁 𝗳𝗿𝗼𝗺 𝗯𝗲𝘁𝘁𝗲𝗿 𝗽𝗿𝗼𝗺𝗽𝘁𝘀. 𝗜𝘁 𝗰𝗼𝗺𝗲𝘀 𝗳𝗿𝗼𝗺 𝗯𝗲𝘁𝘁𝗲𝗿 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗔𝗜 𝘁𝗵𝗮𝘁 𝗲𝗮𝗿𝗻𝘀 𝗶𝘁𝘀 𝘄𝗮𝘆 𝗶𝗻𝘁𝗼 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻. First call is free — no pitch, just a conversation about what you need. I spent 5 years as a backend engineer at Walmart, Oracle, and VMware, building systems where reliability wasn't optional. Now I apply that same engineering discipline to AI — because the gap between a promising demo and a product your customers can depend on is almost always engineering work, not model work. Datalumina-certified AI Engineer, focused on production-ready RAG, LLM orchestration, and evaluation. I write about RAG, LLM evaluation, and production AI engineering — happy to share case studies and technical posts on our first call. ✦ 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 • RAG assistants that cite their sources and gracefully say "I don't know" • Support chatbots grounded in your docs and ticket history — ones that actually resolve • Internal AI tools wired into your CRM, database, or Notion — the kind your team keeps using after week one • Python-based workflow automation that quietly runs the work no one wants to do manually ✦ 𝗛𝗼𝘄 𝗜 𝘁𝗵𝗶𝗻𝗸 𝗮𝗯𝗼𝘂𝘁 𝗔𝗜 𝘄𝗼𝗿𝗸 • Retrieval and cost-optimization first, model second. • I evaluate before I promise — if I can't measure it, I won't claim it won't break • Guardrails from day one — not bolted on after the first embarrassing output • I match the tool to the problem — sometimes a scheduled script beats an AI agent, and I'll tell you when that's true ✦ 𝗧𝗼𝗼𝗹𝘀 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀 • Python • SQL 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 • FastAPI • PostgreSQL • Redis queues 𝗔𝗜 / 𝗠𝗟 • OpenAI • Claude • Gemini • PydanticAI • LangChain 𝗥𝗲𝘁𝗿𝗶𝗲𝘃𝗮𝗹 • PostgreSQL with pgvector and TimescaleDB • Semantic search, Hybrid search 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 • Python • Scheduled jobs 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 • Hetzner Cloud • AWS • Docker • Git ✦ 𝗛𝗼𝘄 𝘄𝗲'𝗹𝗹 𝘄𝗼𝗿𝗸 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿 • Our first call is free — we figure out what "done" looks like before I quote • I write down scope, tests, and acceptance criteria, so you always know where we stand • You'll get readable code, short docs, and a working demo — never a black box • I don't disappear at handoff — I'll help you through deployment and the first round of real-world fixes Tell me what you're trying to solve. I'll ask the right questions before quoting anything.

Live portfolio: https://itsnicklam.com I am a full stack developer with a successful track record of bringing conceptual ideas to fully functional applications. Graduated from UC Berkeley and currently residing in the San Francisco Bay Area. I've worked with a handful of clients in a variety of industries, ranging from startups to Fortune 500 companies. I’ve scaled multiple MVPs to production and have led development teams on enterprise-level codebases. Proficient in both front end and back end frameworks along with relational / non-relational databases. HTML/CSS, Javascript (ES5 / ES6, Typescript, AngularJS, jQuery, Ionic, React, React Native, Redux), Node.js (Express), Python (Flask, Django), SQL (MSSQL, SQLite and Postgres), noSQL (DynamoDB, mongoDB, Firebase, CouchDB, RealmDB), and Java (Android). Well versed in API integration and payments processing. Previous experiences include Uber, Google Maps, Yahoo, Facebook, Instagram, and Stripe. If you are looking for complete end to end services, I can readily deploy across AWS (EC2 / Elastic Beanstalk / Lambda / RDS), Heroku, WordPress, cPanel, or any other platforms / VPS of your choice. Sufficient experience in setting up both Nginx and Apache2. I have also successfully deployed mobile apps on both the Play Store and App Store.