Hire the Best Regular Expressions Developers
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Igor K.

San Diego, California

$90/hr
4.9
543 jobs

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: ✔️ custom theme design or theme/template modification; ✔️ responsive HTML (will pass Google mobile-friendly test, work on any device and OS); ✔️ retina display support; ✔️ HTML5 animation if needed; ✔️ WordPress/Woo back end; ✔️ WordPress multisite and membership, BuddyPress, bbPress; ✔️ custom plugin development; ✔️ 3rd-party services and payment systems API integration; ✔️ SEO, make AMP compliant, setup CDN (Cloudflare); ✔️ support; ✔️ warranty. Great experience with: ✔️ e-commerce; ✔️ payment systems integration (PP, Stripe, Authorize.net and similar); ✔️ Google Maps API (custom design, clusters, routing, radius, speed/time/distances calculation, etc.); ✔️ responsive CRM and dashboards, high-traffic web-projects; ✔️ 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
Braeden K.

Overland Park, Kansas

$45/hr
5.0
4 jobs

Every number traces to a source, and every pipeline tells you when it’s wrong. I specialize in messy data reconciliation, complex document extraction, and production Python pipelines where dropping a single row is not an option. Whether you have legacy mainframe PDFs, conflicting multi-platform exports, or thousands of unstructured records, I turn fragmented sources into clean, verifiable deliverables. What I build: • Complex Data Extraction: 9,915-page legacy mainframe PDFs, scanned tables via OCR, and rate-limited web sources parsed into structured schemas with 100% row accounting. • Records Reconciliation & Deduplication: Combining overlapping exports (WhatsApp, email archives, CRM/ERP dumps) into clean, chronological, audit-ready databases. • Defensive Pipelines & Automation: Unattended daily scrapers and ETL jobs built with automated validation rails, checksums, and loud failure alerts—never silent errors. • Clean Reports & Dashboards: Turning raw CSV/Excel dumps into interactive HTML dashboards or automated client-facing charts. Recent Track Record: • Multi-Source Forensic Reconstruction ($900 Upwork project): Reconstructed 7,600+ fragmented communications across 7 platforms into a single searchable, blind-review interface (5.0 ★). • Public Records Intelligence Engine (GAScout): Parsed 409,142 county tax records from a 9,915-page fixed-width PDF with zero dropped rows. • High-Volume Automated Reporting (5.0 ★): Automated 428 company chart files from raw spreadsheets with a reusable Python engine. Fixed price or hourly. Send me a sample of the raw input and what you need out of it—I'll tell you honestly what's straightforward, what's tricky, and give you an exact price and timeline.

  • Python
  • Data Extraction
  • Automation
  • API Integration
  • Data Processing
  • SQL
  • Data Cleaning
  • Spreadsheet Automation
  • Web Scraping
  • Data Visualization
  • Data Mining
  • Data Analysis
  • ETL
  • Data Migration
  • Data Engineering
  • ETL Pipeline
  • PostgreSQL
  • Web Crawler Framework
  • Data Quality Assessment
  • Data Transformation
Donald B.

Montgomery Village, Maryland

$100/hr
5.0
3 jobs

Experience Summary Experienced with engineering most aspects of network based system architectures and development using Java, C++ and RDBMS. Extensive design and development experience on multiple client-server projects using UNIX & Windows and the design of interoperability between UNIX, Windows & Mainframe Platforms. Development of many Android apps over the past 5 years using both Eclipse and Android Studio. 15+ years of Java/J2EE development experience plus 20+ years working in various UNIX environments. Primary development tool has been with Eclipse and IntelliJ. 10+ years of C/C++ network development experience on various UNIX platforms. Experience includes multi-threaded applications, RDMS, TCP/IP, etc. J2EE development experience includes working with the following on various projects: Servlet and JSP development, Applets, JDBC, JMS, SOAP, JSON, JPA framework and XML. Android mobile development using Eclipse/Android Studio and Flutter/Dart. See

  • Web Development
  • Full-Stack Development
  • React
  • React Native
  • Next.js
  • Node.js
  • TypeScript
  • Java
  • JavaScript
  • Kotlin
  • PostgreSQL
  • Amazon Web Services
  • Docker
  • AI Code Generator
Dalton R.

Springfield, Missouri

$25/hr
5.0
2 jobs

I build web scrapers and automation bots that deliver clean, structured data — CSV, JSON, or straight into your database — on schedule and without babysitting. Recent builds: an e-commerce catalog scraper with proxy rotation and retry logic, a contact/lead extractor that turns directory pages into deduplicated spreadsheets, and a price-change monitor that sends SMS alerts within minutes of a change. All three are public on my GitHub (linked below) — you can read the code before you ever hire me. What you get working with me: • A fixed scope in writing before I start — no surprise hours • Runnable code with a README, not a black box • Daily progress updates and a working demo before final delivery • Scrapers built to survive site changes: resilient selectors, logging, graceful failure Stack: Python (Playwright, Selenium, httpx, BeautifulSoup, pandas), proxy management, CAPTCHA handling, cron/cloud scheduling, REST API integration, Excel/Sheets export. I am a CS and Mathematics major based in Missouri. I respond within a few hours, and I do not take jobs I cannot deliver.

  • JavaScript
  • Python
  • Web Development
  • Machine Learning
  • Mathematics
  • Automation
  • Data Extraction
  • Data Mining
  • PDF
  • Selenium
  • Data Scraping
  • Browser Automation
  • Lead Generation
  • API Integration
  • Web Scraping
Dustin H.

Morehead City, North Carolina

$100/hr
4.9
35 jobs

I design and build custom automation platforms that replace manual processes, acquire difficult-to-access data, and streamline business operations. Over the past 15+ years, I’ve built production systems for e-commerce companies, manufacturers, wholesalers, and enterprise clients that automate workflows many businesses still perform manually. My work goes far beyond writing scripts. I help clients define the problem, architect the solution, build reliable production systems, and continue improving them as their business grows. Whether you need browser automation, large-scale web scraping, inventory monitoring, AI-assisted data enrichment, or an end-to-end backend platform, I can take a project from concept to production. What I Build Enterprise Browser Automation * Playwright & Selenium automation * Multi-account browser management * Authentication & session handling * Proxy integration * CAPTCHA workflows * Error recovery & monitoring * Long-running production bots Web Scraping & Data Acquisition * High-volume web scraping * Product catalogs * Pricing intelligence * Manufacturing & industrial research * Retail data acquisition * Lead generation platforms * Company & facility research * Structured data pipelines * AI-assisted data enrichment Business Process Automation * Workflow automation * Inventory monitoring * Order processing * Notification systems * Data synchronization * Internal business tools * Report generation * Scheduled automation * Custom operational software Backend Development * Python * PHP * FastAPI * Node.js * MySQL & PostgreSQL * REST APIs * Docker * Linux deployments * Background workers * Queue systems Dashboards & Admin Tools * Custom admin portals * Operational dashboards * Real-time monitoring * Reporting systems * Error tracking * Analytics * User management * Audit logging ⸻ Industries I’ve Worked With * E-commerce * Manufacturing * Food & Beverage * Industrial Automation * Wholesale Distribution * Retail Intelligence * Pharmaceuticals * Supply Chain * Logistics Why Clients Hire Me I Build Production Systems Many developers can build a scraper. I build systems that continue running for months, recover from failures automatically, monitor themselves, and scale as your business grows. I Think Like an Engineer Before writing code, I work to understand the business process, identify bottlenecks, and design the simplest reliable architecture. That usually saves clients time, money, and future redevelopment. I Communicate Clearly You’ll always know: * What is being built * Why it’s being built * Current progress * Risks and tradeoffs * Next steps No surprises. Long-Term Mindset Most successful automation projects evolve over time. I design systems that are maintainable, extensible, and ready for future growth instead of quick one-off solutions. ⸻ Typical Projects * Enterprise web scraping platforms * Browser automation systems * Inventory monitoring bots * Pricing intelligence platforms * Manufacturing lead generation * Data enrichment pipelines * AI-assisted research tools * Internal operational dashboards * API integrations * E-commerce automation * Custom workflow software * Business process automation ⸻ Let’s Build Something Useful If your business spends hours each week performing repetitive work, collecting data manually, or moving information between systems, there’s probably a better way. I’d be happy to discuss your project and help design a solution that’s reliable, scalable, and built for long-term success.

  • Python
  • Data Scraping
  • JavaScript
  • PHP
  • Amazon MWS
  • Interspire
  • API Development
  • Automation
  • Web Crawling
  • API Integration
  • Web Scraping
  • Browser Automation
  • Selenium
  • Data Extraction
  • Amazon Web Services
  • Redis
  • MySQL
  • OpenAI API
  • AI Agent Development
  • Bot Development
  • Amazon EC2
  • API
Kyle S.

Conroe, Texas

$50/hr
5.0
6 jobs

I'm a full-stack developer with 14+ years of coding experience and a B.S. in Information Technology (Computer Science focus) from Sam Houston State University. I specialize in web scraping, data extraction, and business automation—helping clients save time and increase revenue through custom technical solutions. What I Do Best: I build tools that solve real business problems. Whether you need to extract thousands of leads from Google Maps, monitor competitor pricing across e-commerce platforms, or automate repetitive workflows, I deliver production-ready solutions that work reliably at scale. My Technical Expertise: - Web Scraping & Data Extraction – Python (BeautifulSoup, Scrapy, Selenium, Playwright) - Full-Stack Development – React, Node.js, Express, modern JavaScript - API Integration – RESTful APIs, third-party integrations, webhook implementation - Business Automation – Email systems, report generation, workflow optimization - Data Processing – Pandas, CSV/Excel handling, database design (SQL, MongoDB) - E-commerce Solutions – Shopify/WooCommerce integration, payment processing Why Clients Choose Me: ✓ Fast, reliable delivery using modern development tools and best practices ✓ Clear communication—I explain technical concepts in plain English ✓ Business-focused approach—I care about your ROI, not just writing code ✓ Clean, documented code that's easy to maintain and scale ✓ 14+ years of hands-on experience solving real-world problems Recent Projects: I've built lead generation systems processing 10,000+ business records, price monitoring tools tracking multiple e-commerce platforms, automated invoicing systems with email integration, and custom dashboards connecting multiple APIs for real-time business intelligence. Let's Talk About Your Project: I'm here to understand your challenge and deliver a solution that works. Whether it's extracting data, automating workflows, or building a custom application, I bring both technical expertise and business understanding to every project. Ready to get started? Send me a message and let's discuss how I can help.

  • Web Scraping
  • Python
  • JavaScript
  • Data Extraction
  • API Integration
  • React
  • Data Mining
  • Node.js
  • Selenium
  • Data Entry
  • Web Development
  • Database Development
  • RESTful API
  • Bot Development
  • Web Design

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