Hire the Best Semantic UI Specialists in California

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Ali I.

Rowland Heights, California

$50/hr
5.0
2 jobs

I build autonomous AI workforces that go beyond basic chatbots. Using ๐—”๐—ด๐—ฒ๐—ป๐˜๐—ถ๐—ฐ ๐—ฅ๐—”๐—š ๐—ฎ๐—ป๐—ฑ ๐— ๐˜‚๐—น๐˜๐—ถ-๐—”๐—ด๐—ฒ๐—ป๐˜ orchestration, I transform messy data into production-ready intelligence that executes complex tasks. If you are struggling with unreliable LLM outputs, disconnected data silos, or manual workflows that are slowing your growth, you don't need a prompt engineer, you need a Systems Architect. Most "AI solutions" today are just wrappers that hallucinate or fail at scale. Don't follow that approach. ๐™ƒ๐™ค๐™ฌ ๐™„ ๐™ƒ๐™š๐™ก๐™ฅ ๐™”๐™ค๐™ช ๐™Ž๐™˜๐™–๐™ก๐™š: โœ…Agentic Orchestration: I design "Supervisor-Worker" hierarchies (LangChain/LangGraph) where specialized AI agents collaborate, critique, and execute tasks autonomously. โœ…Production-Grade RAG: I build Retrieval-Augmented Generation systems that don't just search, they reason through your proprietary data (Vector DBs like Pinecone/Milvus) with high precision. โœ…Full-Stack Reliability: I treat AI as part of a larger ecosystem. I build the robust backends (Python/FastAPI/Django) and fluid frontends (React) necessary to make AI usable for your team or customers. โœ…Human-in-the-Loop (HITL): I implement safety "circuit breakers" for sensitive tasks, ensuring AI acts with guardrails and escalates to humans when necessary. ๐™ˆ๐™š๐™–๐™จ๐™ช๐™ง๐™–๐™—๐™ก๐™š ๐™„๐™ข๐™ฅ๐™–๐™˜๐™ฉ & ๐™๐™š๐™จ๐™ช๐™ก๐™ฉ๐™จ: โญ 2.4M Monthly Calls: Engineered an AI Front Desk system using a multi-agent pattern to route and resolve high-volume interactions. โญ 22% Reduction in Data Errors: Architected normalized API models for 15+ disparate legacy systems to ensure seamless data interoperability. โญ 65% Performance Boost: Migrated monolithic legacy infrastructures to modern headless architectures, drastically improving global scalability. โญ Agentic Reasoning: Developed systems capable of autonomously querying external databases to perform complex eligibility and logic checks. ๐™ˆ๐™ฎ ๐™๐™š๐™˜๐™ ๐™Ž๐™ฉ๐™–๐™˜๐™ : ๐Ÿ”˜AI & LLMs: OpenAI (GPT-4o), Amazon Bedrock, LangChain, LangGraph, CrewAI. ๐Ÿ”˜Backend & APIs: Python (FastAPI, Django), Node.js, PostgreSQL, Neo4j (GraphRAG). ๐Ÿ”˜Frontend & Data: React, Tailwind CSS, ETL Pipelines, AWS/Docker. ๐—ช๐—ต๐—ผ ๐—ง๐—ต๐—ถ๐˜€ ๐—œ๐˜€ ๐—™๐—ผ๐—ฟ: I work with forward-thinking firms and mid-sized companies that need to move beyond AI prototypes and into scalable, revenue-generating production systems. ๐—ช๐—ต๐—ผ ๐—ง๐—ต๐—ถ๐˜€ ๐—œ๐˜€ ๐—ก๐—ข๐—ง ๐—™๐—ผ๐—ฟ: I am a bad fit for clients looking for basic GPT wrappers or simple "scripting." I prioritize documentation-first, secure, and interoperable architecture. About Me: I am a Senior Architect with 5+ years of experience navigating the duality of high-stakes technical execution and complex problem-solving. My work is defined by "Precision-by-design", treating every line of code as a critical component in a larger machine. Ready to deploy a digital workforce that actually works? Letโ€™s discuss your project.

  • Artificial Intelligence
  • Web Application
  • Mobile App
  • Computer Vision
  • Machine Learning
Gayithri P.

San Jose, California

$60/hr
5.0
2 jobs

๐—ฅ๐—ฒ๐—น๐—ถ๐—ฎ๐—ฏ๐—น๐—ฒ ๐—”๐—œ ๐—ฑ๐—ผ๐—ฒ๐˜€๐—ป'๐˜ ๐—ฐ๐—ผ๐—บ๐—ฒ ๐—ท๐˜‚๐˜€๐˜ ๐—ณ๐—ฟ๐—ผ๐—บ ๐—ฏ๐—ฒ๐˜๐˜๐—ฒ๐—ฟ ๐—ฝ๐—ฟ๐—ผ๐—บ๐—ฝ๐˜๐˜€. ๐—œ๐˜ ๐—ฐ๐—ผ๐—บ๐—ฒ๐˜€ ๐—ณ๐—ฟ๐—ผ๐—บ ๐—ฏ๐—ฒ๐˜๐˜๐—ฒ๐—ฟ ๐—ฒ๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด. ๐—œ ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ ๐—”๐—œ ๐˜๐—ต๐—ฎ๐˜ ๐—ฒ๐—ฎ๐—ฟ๐—ป๐˜€ ๐—ถ๐˜๐˜€ ๐˜„๐—ฎ๐˜† ๐—ถ๐—ป๐˜๐—ผ ๐—ฝ๐—ฟ๐—ผ๐—ฑ๐˜‚๐—ฐ๐˜๐—ถ๐—ผ๐—ป. First call is free โ€” 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 โ€” 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 โ€” happy to share case studies and technical posts on our first call. โœฆ ๐—ช๐—ต๐—ฎ๐˜ ๐—œ ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ โ€ข RAG assistants that cite their sources and gracefully say "I don't know" โ€ข Support chatbots grounded in your docs and ticket history โ€” ones that actually resolve โ€ข Internal AI tools wired into your CRM, database, or Notion โ€” the kind your team keeps using after week one โ€ข Python-based workflow automation that quietly runs the work no one wants to do manually โœฆ ๐—›๐—ผ๐˜„ ๐—œ ๐˜๐—ต๐—ถ๐—ป๐—ธ ๐—ฎ๐—ฏ๐—ผ๐˜‚๐˜ ๐—”๐—œ ๐˜„๐—ผ๐—ฟ๐—ธ โ€ข Retrieval and cost-optimization first, model second. โ€ข I evaluate before I promise โ€” if I can't measure it, I won't claim it won't break โ€ข Guardrails from day one โ€” not bolted on after the first embarrassing output โ€ข I match the tool to the problem โ€” sometimes a scheduled script beats an AI agent, and I'll tell you when that's true โœฆ ๐—ง๐—ผ๐—ผ๐—น๐˜€ ๐—œ ๐˜„๐—ผ๐—ฟ๐—ธ ๐˜„๐—ถ๐˜๐—ต ๐—Ÿ๐—ฎ๐—ป๐—ด๐˜‚๐—ฎ๐—ด๐—ฒ๐˜€ โ€ข Python โ€ข SQL ๐—•๐—ฎ๐—ฐ๐—ธ๐—ฒ๐—ป๐—ฑ โ€ข FastAPI โ€ข PostgreSQL โ€ข Redis queues ๐—”๐—œ / ๐— ๐—Ÿ โ€ข OpenAI โ€ข Claude โ€ข Gemini โ€ข PydanticAI โ€ข LangChain ๐—ฅ๐—ฒ๐˜๐—ฟ๐—ถ๐—ฒ๐˜ƒ๐—ฎ๐—น โ€ข PostgreSQL with pgvector and TimescaleDB โ€ข Semantic search, Hybrid search ๐—”๐˜‚๐˜๐—ผ๐—บ๐—ฎ๐˜๐—ถ๐—ผ๐—ป โ€ข Python โ€ข Scheduled jobs ๐—œ๐—ป๐—ณ๐—ฟ๐—ฎ๐˜€๐˜๐—ฟ๐˜‚๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ โ€ข Hetzner Cloud โ€ข AWS โ€ข Docker โ€ข Git โœฆ ๐—›๐—ผ๐˜„ ๐˜„๐—ฒ'๐—น๐—น ๐˜„๐—ผ๐—ฟ๐—ธ ๐˜๐—ผ๐—ด๐—ฒ๐˜๐—ต๐—ฒ๐—ฟ โ€ข Our first call is free โ€” we figure out what "done" looks like before I quote โ€ข I write down scope, tests, and acceptance criteria, so you always know where we stand โ€ข You'll get readable code, short docs, and a working demo โ€” never a black box โ€ข I don't disappear at handoff โ€” 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.

  • Artificial Intelligence
  • Python
  • Retrieval Augmented Generation
  • LangChain
  • Vector Database
  • LLM Prompt
  • Docker
  • Git
  • Java
  • REST API
  • Spring Boot

How it works

Post a job for free Post a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Semantic UI Specialist in California on Upwork?

You can hire a Semantic UI Specialist in California on Upwork in four simple steps:

  • Create a job post tailored to your Semantic UI Specialist project scope. We'll walk you through the process step by step.
  • Browse top Semantic UI Specialist talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Semantic UI Specialist profiles and interview.
  • Hire the right Semantic UI Specialist for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Semantic UI Specialist?

Rates charged by Semantic UI Specialists on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Semantic UI Specialist in California on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Semantic UI Specialists and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Semantic UI Specialist team you need to succeed.

Can I hire a Semantic UI Specialist in California within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Semantic UI Specialist proposals within 24 hours of posting a job description.