Hire the Best Functional Programmers in California
Los Angeles, California
๐'๐๐ฒ ๐๐ฒ๐น๐ฝ๐ฒ๐ฑ ๐๐ผ๐๐ฒ๐ป๐ ๐ผ๐ณ ๐๐น๐ถ๐ฒ๐ป๐๐ Develop AI / ML Prototypes. ๐ค Each one ๐๐ป๐๐๐ฒ๐ฟ๐ ๐ฎ ๐๐ฒ๐ ๐๐๐๐ถ๐ป๐ฒ๐๐ ๐ค๐๐ฒ๐๐๐ถ๐ผ๐ป: โShould we invest more money in data science?โ Expert-Vetted Badge: Top 1% on Upwork. Free intro call - invite me! We will co-develop a plan to apply AI / ML to your business or product. ๐ ๐ Learn More About Me ๐ ----- ๐ช๐ต๐ฎ๐ ๐ ๐ฎ๐ธ๐ฒ๐ ๐ ๐ฒ ๐จ๐ป๐ถ๐พ๐๐ฒ? ----- I've played many roles: ๐๐ฑ๐๐๐ฎ๐ญ๐ข๐ฏ๐, ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ ๐ฆ๐๐ง๐๐ ๐๐ซ, ๐ญ๐๐๐ก๐ง๐ข๐๐๐ฅ ๐ฅ๐๐๐, ๐๐จ๐ง๐ญ๐ซ๐ข๐๐ฎ๐ญ๐จ๐ซ, ๐ถ๐ป๐๐๐ฟ๐๐ฐ๐๐ผ๐ฟ, and ๐๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ๐๐ง๐ญ. These diverse perspectives allow me to: ๐ข Ask compelling questions ๐ข Listen with empathy for a stakeholder's role ๐ข Hone in on the most important product features, capabilities and insights. This ๐บ๐ถ๐ ๐ผ๐ณ ๐๐ฒ๐ฐ๐ต๐ป๐ถ๐ฐ๐ฎ๐น ๐ฎ๐ป๐ฑ ๐ฝ๐ฟ๐ผ๐ฑ๐๐ฐ๐ / ๐ฐ๐ผ๐บ๐บ๐๐ป๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป ๐๐ธ๐ถ๐น๐น๐ helps me provide ๐ฒ๐ ๐ฐ๐ฒ๐ฝ๐๐ถ๐ผ๐ป๐ฎ๐น ๐๐ฎ๐น๐๐ฒ. ----- ๐๐ผ๐ ๐๐ผ๐ฒ๐ ๐ฎ๐ป ๐๐ป๐ด๐ฎ๐ด๐ฒ๐บ๐ฒ๐ป๐ ๐๐ผ? ----- We build in cycles: โถ๏ธ We collaborate to set realistic goals. โคด๏ธ I build a little (or work with a team to build). ๐ I let you know what I found; we restart. These cycles get larger over time, and stop when you know: "Should you invest more money in data science?" ----- ๐๐ผ๐ ๐ ๐๐ฐ๐ต ๐ง๐ถ๐บ๐ฒ ๐ฎ๐ป๐ฑ ๐ ๐ผ๐ป๐ฒ๐? ----- Cycle โ Billed Hours โโ Key Discussion ------- โ ---------------โโ--------------------------- 1โโโโโ~5 - 10๓ โโโโโWhat is the goal? 2โ โ โโ~10 - 30โโ โ โProduct tradeoffs 3โโ โ โ~15 - 40 โโโโHow do we deploy? 4+ โ โ โ~20 - 60โโโโ Product tradeoffs The total project cost depends on: ๐กWhat you already have in place ๐กWho you already have working on it ๐กWho else you need to bring in ----- ๐ช๐ต๐ ๐ฆ๐ต๐ผ๐๐น๐ฑ ๐ฌ๐ผ๐ ๐ง๐ฟ๐๐๐ ๐ ๐ฒ? ----- I get great results for my clients, and they will tell you so! โ ๐๐ค๐ฌ. ๐ผ๐๐ง๐ค๐ฃ ๐ช๐ฃ๐๐๐ง๐จ๐ฉ๐๐ฃ๐๐จ ๐๐ก๐ก ๐ฉ๐๐จ๐ ๐จ ๐๐๐๐ค๐ง๐ ๐ฌ๐ ๐๐๐ฃ๐๐จ๐๐๐ ๐ฉ๐ค ๐๐๐จ๐๐ง๐๐๐ ๐ค๐ช๐ง ๐ฃ๐๐๐๐จ. ๐๐ ๐๐จ ๐ซ๐๐ง๐ฎ ๐ค๐ฅ๐๐ฃ ๐ฉ๐ค ๐จ๐ช๐๐๐๐จ๐ฉ๐๐ค๐ฃ๐จ ๐๐ช๐ฉ ๐๐ก๐จ๐ค ๐๐๐ซ๐ ๐๐ง๐๐๐ฉ ๐จ๐ ๐๐ก๐ก๐จ ๐๐ฃ ๐๐ค๐ข๐ข๐ช๐ฃ๐๐๐๐ฉ๐๐ฃ๐ ๐๐๐จ ๐ค๐ฌ๐ฃ ๐๐๐๐๐จ. ๐๐๐จ ๐๐ฅ๐ฅ๐ง๐ค๐๐๐ ๐๐จ ๐ซ๐๐ง๐ฎ ๐จ๐ข๐๐ง๐ฉ, ๐๐ง๐๐๐ฉ ๐๐ค๐ข๐ข๐ช๐ฃ๐๐๐๐ฉ๐๐ค๐ฃ๐จ ๐๐ฃ๐ ๐๐ง๐๐๐ฉ ๐ฅ๐ง๐ค๐๐ช๐๐ฉ ๐ข๐๐ฃ๐๐๐๐ข๐๐ฃ๐ฉ ๐จ๐ ๐๐ก๐ก๐จ. ๐ผ๐จ๐ ๐จ ๐๐ค๐ค๐ ๐ฆ๐ช๐๐จ๐ฉ๐๐ค๐ฃ๐จ ๐๐ฃ๐ ๐๐๐ฃ ๐๐๐ก๐๐ซ๐๐ง ๐๐ช๐จ๐๐ฃ๐๐จ๐จ ๐ซ๐๐ก๐ช๐. ๐๐ค๐ฅ ๐ฅ๐ง๐ค๐๐๐จ๐จ๐๐ค๐ฃ๐๐ก! โ ๐ฃ ๐ ๐ฎ๐๐ฒ๐๐๐ ๐๐น๐๐ฝ๐ฐ๐๐๐ป๐๐ธ๐ถ, CEO of Curulis (50 person company; People Analytics space; Poland based). ๐ฃ I've also made a difference in full-time leadership roles: ๐ ๐ฉ๐ฃ ๐ผ๐ณ ๐ข๐ฝ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป๐ ๐ฎ๐ ๐๐๐จ๐ฉ ๐ ๐ฒ๐ฑ๐ถ๐ฎ: Built a sales information system and a data-driven marketing investment platform. Developed executive dashboards and a KPI tracker. Resulted in reversing a negative trend and growing revenue +20% y/y. ๐ ๐๐ถ๐ฟ๐ฒ๐ฐ๐๐ผ๐ฟ ๐ผ๐ณ ๐๐ฎ๐๐ฎ ๐ฎ๐ ๐๐ฎ๐๐ฎ๐พ๐๐ฒ๐๐: Consolidated and rebuild trust in data. Built platform to analyze educational content, marketing effectiveness, and company KPI and KRIs. Resulted in growing revenue at +4% m/m. ----- ๐ง๐ฒ๐ฐ๐ต๐ป๐ถ๐ฐ๐ฎ๐น ๐๐ฎ๐ฝ๐ฎ๐ฏ๐ถ๐น๐ถ๐๐ถ๐ฒ๐? ----- I've been an expert technologist for 15+ years (and a technologist for 10 more)! I have a toolkit for every size of data. Here's a representative sample: โช๏ธ Smallish: Excel, Tableau, Python / Anaconda, sklearn / pandas, MySQL โพ Bigger: Redshift, Athena, MongoDB, Neo4j, NLTK โผ๏ธ Big: Hadoop + Spark ecosystem; AWS ecosystem, Java / Scala, MLlib I also make liberal use of AI-coding agents. My productivity has significantly increased since early 2026! ----- ๐ช๐ต๐ ๐๐ผ ๐๐น๐ถ๐ฒ๐ป๐๐ ๐๐ผ๐๐ฒ ๐ ๐ฒ? ----- I listen and I don't waste their money! โ ๐ผ๐๐ง๐ค๐ฃ ๐๐จ ๐๐ญ๐๐๐ฅ๐ฉ๐๐ค๐ฃ๐๐ก. ๐๐ง๐ค๐ข ๐จ๐ฉ๐๐ง๐ฉ ๐ฉ๐ค ๐๐๐ฃ๐๐จ๐, ๐๐ ๐ฌ๐๐จ ๐จ๐ค ๐ฅ๐ง๐ค๐๐๐จ๐จ๐๐ค๐ฃ๐๐ก. ๐๐ ๐ฌ๐ค๐ง๐ ๐๐ ๐๐๐ง๐ ๐ฉ๐ค ๐๐๐๐ฅ๐ก๐ฎ ๐ช๐ฃ๐๐๐ง๐จ๐ฉ๐๐ฃ๐ ๐ข๐ฎ ๐๐ค๐๐ก๐จ ๐๐ฃ๐ ๐ฃ๐๐๐๐จ ๐๐ค๐ง ๐ฉ๐๐ ๐ฅ๐ง๐ค๐๐๐๐ฉ, ๐๐ฃ๐ ๐๐ ๐ฌ๐๐จ ๐๐๐ง๐๐๐ช๐ก ๐ฉ๐ค ๐๐ง๐ฉ๐๐๐ช๐ก๐๐ฉ๐ ๐ฉ๐๐๐ข ๐๐๐๐ ๐ฉ๐ค ๐ข๐๐ ๐ ๐จ๐ช๐ง๐ ๐ฌ๐ ๐ฌ๐๐ง๐ ๐๐ก๐๐๐ฃ๐๐. ๐๐ ๐ฌ๐๐จ ๐๐ฃ ๐๐ค๐ฃ๐จ๐ฉ๐๐ฃ๐ฉ ๐๐ค๐ข๐ข๐ช๐ฃ๐๐๐๐ฉ๐๐ค๐ฃ ๐ฌ๐๐ฉ๐ ๐ข๐ ๐๐จ ๐๐ ๐ฌ๐๐จ ๐ฌ๐ค๐ง๐ ๐๐ฃ๐, ๐๐ฃ๐ ๐ฌ๐๐๐ฃ ๐ฌ๐ ๐๐๐ฉ ๐ฅ๐ค๐๐ฃ๐ฉ๐จ ๐ฌ๐๐๐ง๐ ๐๐ช๐๐๐๐ข๐๐ฃ๐ฉ ๐๐๐ก๐ก๐จ ๐ฃ๐๐๐๐๐ ๐ฉ๐ค ๐๐ ๐ข๐๐๐, ๐๐ ๐ฅ๐ง๐ค๐ซ๐๐๐๐ ๐ข๐ช๐ก๐ฉ๐๐ฅ๐ก๐ ๐ง๐๐๐ค๐ข๐ข๐๐ฃ๐๐๐ฉ๐๐ค๐ฃ๐จ ๐๐ฃ๐ ๐ง๐๐๐จ๐ค๐ฃ๐จ ๐๐ค๐ง ๐๐๐๐. ๐๐๐ ๐๐ฃ๐ ๐ง๐๐จ๐ช๐ก๐ฉ ๐๐จ ๐ ๐จ๐ค๐ก๐ช๐ฉ๐๐ค๐ฃ ๐ฉ๐๐๐ฉ ๐ ๐๐ข ๐จ๐ค ๐ฉ๐๐ง๐๐ก๐ก๐๐ ๐ฌ๐๐ฉ๐! ๐ ๐๐๐ฃ'๐ฉ ๐ง๐๐๐ค๐ข๐ข๐๐ฃ๐ ๐ผ๐๐ง๐ค๐ฃ ๐๐๐๐๐ก๐ฎ ๐๐ฃ๐ค๐ช๐๐! โ ๐ฃ ๐๐ฝ๐ฟ๐ถ๐น ๐ฆ๐ฒ๐ถ๐ณ๐ฒ๐ฟ๐, Founder of Decision Analytics (Consumer Analytics space; USA based) ๐ฃ ----- ๐ก๐ฒ๐ ๐ ๐ฆ๐๐ฒ๐ฝ๐ ----- ๐ Invite me to your job on Upwork! Thanks, Aaron Merlob
- Statistics
- Microsoft Excel
- Data Analysis
- Data Interpretation
- Data Science
- Database
- Data Science Consultation
- Data Analytics & Visualization Software
- Management Consulting
- Data Mining
- Artificial Intelligence
Los Angeles, California
Senior Business Analyst, Developer, Database Designer, and Software Architect with a proven record of delivering effective results for complex business problems. Master of business/IT collaboration, object-oriented software development, and problem solving. Conference speaker, author, and former president of a 501(c)(3) computer user group.
- Microsoft SQL Server
- Database Design
- Visual FoxPro
- FoxPro Programming
- Software Architecture
- Data Modeling
- Business Analysis
- Object-Oriented Design
Playa Vista, California
I help businesses build high-quality WordPress websites that look premium, load fast, and convert visitors into customers. Iโm a senior WordPress developer and UI/UX specialist with over 15 years of experience designing and building high-quality, conversion-focused websites from the ground up. I specialize in creating clean, modern, and highly functional WordPress sites that position businesses as premium, credible, and trustworthy. Whether you need a full redesign, a custom build, or ongoing improvements, I deliver solutions that are both visually refined and technically sound. My work is focused on three core principles: โข Clear, professional design that elevates your brand โข Fast, reliable performance across all devices โข Conversion-focused structure that drives inquiries and results Iโve worked with service-based businesses, consultants, construction companies, education providers, and professional firms to improve their online presence and generate better leads. โธป What I Can Help You With Custom WordPress Development โข Full website design and development โข Custom themes and Elementor builds โข PSD / Figma to WordPress โข Landing pages optimized for conversion WordPress Optimization & Improvement โข Speed optimization and performance tuning โข Website redesigns and modernization โข Mobile optimization โข UX improvements and structural cleanup Advanced WordPress Functionality โข ACF Pro and Custom Post Types โข WooCommerce development and customization โข API integrations โข Custom functionality and troubleshooting Maintenance & Support โข Bug fixes and issue resolution โข Ongoing updates and improvements โข Site cleanup and stabilization โข Long-term technical support โธป Technical Skills WordPress, Elementor, WooCommerce PHP, JavaScript, HTML5, CSS3, AJAX, SQL ACF Pro, Custom Post Types Speed optimization and performance tuning Responsive and mobile-first development API integration Design tools: Adobe Photoshop and Illustrator โธป What You Can Expect Working With Me โข Clear communication โข Professional, detail-oriented execution โข Reliable turnaround times โข Clean, maintainable code โข Long-term support when needed My goal is not just to build a website, but to create a strong, professional online presence that supports your business growth. If youโre looking for a dependable developer who understands both design and functionality, Iโd be happy to discuss your project.
- WordPress Development
- Web Development
- WordPress
- CSS 3
- Yoast SEO
- PHP
- JavaScript
- Elementor
- WordPress Plugin
- WordPress e-Commerce
- PSD to WordPress
- Website Redesign
- Website
- Landing Page
- WordPress Theme
Berkeley, California
Over 20 years experience as software engineer and over 8 years as manager and director. Specialize in full stack, cloud and application development, with extensive experience in design, maintenance, and integration work, including DevOps (CI/CD) and related infrastructure, from prototypes to very large scale. Passionate about ensuring business is heading in the right direction, efficiently delivering quality work of my teams, practicing compassionate communication using NVC, and enabling engineers to be the best they can be. Worn many hats prior to management, such as developer, QA, architect, operations and team lead, documenter, and technical project manager.
- Web Development
- API
- Front-End Development
- Back-End Development
- Scrum
- Agile Project Management
- Automation
- React
- Node.js
- Python
- OpenAI API
- Machine Learning
- Next.js
- LangChain
- AWS Development
San Diego, California
Senior WordPress Developer. Reliable and responsive. Result-oriented work. On time. "Top Rated Plus" Upwork premium freelancer, member of an Upwork PRO group. 14+ years skill in full-stack web site development (prototype, graphic design, front-end, back-end, SEO). Back end experience: PHP (WordPress, Laravel), C# (ASP .NET MVC, Web API, Entity Framework, Orchard, Kooboo, Umbraco). Front end experience: HTML5 / CSS3, SASS, LESS, Bootstrap 5, Html5 animation, JS, jQuery, AJAX, Json, Rest API, Angular 1-2-4, React.js, Vue.js, Node.js, Three.js. Other experience: Windows/Unix Server administration, Git, Azure, AWS and cloud solutions. In terms of WordPress can provide: โ๏ธ custom theme design or theme/template modification; โ๏ธ responsive HTML (will pass Google mobile-friendly test, work on any device and OS); โ๏ธ retina display support; โ๏ธ HTML5 animation if needed; โ๏ธ WordPress/Woo back end; โ๏ธ WordPress multisite and membership, BuddyPress, bbPress; โ๏ธ custom plugin development; โ๏ธ 3rd-party services and payment systems API integration; โ๏ธ SEO, make AMP compliant, setup CDN (Cloudflare); โ๏ธ support; โ๏ธ warranty. Great experience with: โ๏ธ e-commerce; โ๏ธ payment systems integration (PP, Stripe, Authorize.net and similar); โ๏ธ Google Maps API (custom design, clusters, routing, radius, speed/time/distances calculation, etc.); โ๏ธ responsive CRM and dashboards, high-traffic web-projects; โ๏ธ experience with Microsoft Power BI. Keep the warranty, always available, fast response and turnaround. === TAGS === WordPress Developer ; WordPress expert ; Fullstack developer.
- WordPress
- WooCommerce
- PHP
- WordPress Plugin
- WordPress Development
- Elementor
- WordPress Theme
- WordPress Security
- WordPress Multisite
- WordPress Customization
- Web Design
- CSS
- JavaScript
- HTML
- Vue.js
San Leandro, California
I'm a senior software engineer with nearly 20 years of experience across full-stack web, mobile, databases, Internet of Things devices, fintech and trading infrastructure, and most recently AI-powered products. Whether you need a fractional CTO, a hands-on implementation partner, or a second opinion on a hard technical call, there's a good chance I've worked a similar problem before and can help you get it right. I run a small software practice called McDole Group, and when you hire me, I'm the person actually doing the work, not a project manager handing it off to someone else. I lean on AI-assisted development with Claude Code, which lets me deliver at the pace of a small team while staying your single point of contact. Plenty of work that used to take a couple of weeks now takes me a day or two, and I pass that speed along to you. Where I fit best: Fractional CTO and technical advisor. I help non-technical founders pick the right stack, scope an MVP, manage developers and offshore teams, and ship version 1.0 on a 3 to 6 month timeline. I've taken products from concept to launch more times than I can count, and I'm comfortable being the only technologist in the room with business and product people. AI implementation. I build production AI features hands-on, including multi-pass LLM (large language model) pipelines, AI agents, Claude and OpenAI integrations, and MCP (Model Context Protocol) servers. Recent projects include FinBrief, a Securities and Exchange Commission (SEC) filing intelligence API, Upwork Scout, a multi-tier Claude evaluation pipeline, and Talon, an autonomous agent loop with human-in-the-loop gates. General implementation. Node.js and Express backends, Python, native mobile (iOS, Android, Flutter), and embedded C++. I'm strong at getting things from idea to shipped product, and I do my best work when the scope is still fuzzy and someone needs to bring shape to it. I enjoy learning new technologies as needed for the task at hand. AI coaching. I'll show you where AI genuinely helps in your work and where it doesn't, with live demos against your real use cases instead of generic examples. I'm at my best translating between business goals and engineering execution, and I'd rather ship something that works than win an argument on paper. If you'd like to talk through what you're building, I'd love to hear about it.
- Cross Functional Team Leadership
- Scrum
- Android App Development
- iOS Development
- Scripts & Utilities
- Mobile App Development
- Project Management
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