Hire the Best Regular Expressions Developers
in the United Kingdom

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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Peter F.

Tiverton, United Kingdom

$75/hr
5.0
18 jobs

UPWORK TOP RATED & EXPERT VETTED Experienced and versatile Python developer. Former IT Project Manager at IBM and GlaxoSmithKline. Specialist areas of interest include: * Web scraping and HTML parsing with Python, Selenium, SeleniumWire, Scrapy, BeautifulSoup, Requests, Niquests, LXML, Parsel etc. * AI Prompt Engineering, fine tuning, integration and and automation using LangChain, EmbedChain, Chainlit, Autogen and Semantic Kernel. * AI/Machine Learning using OpenAI, Coreweave, Huggingface, Forefront, Bing Chat, Copilot, Bard etc. * Vector databases including MongoDB vector, Chroma, Pinecone, Weaviate, and Facebook AI Similarity Search (FAISS). * Large Language Models (LLMs): LLaMa, GPT-3, GPT-3J, GPT3.5, and GPT-4 etc. * Rapid development of Web Apps using Bottle, Flask, Streamlit, Flutter/Flet, and Anvil.works. * Data Wrangling to and from HTML, Google Sheets/Docs, Excel, Word, PowerPoint, PDF, CSV, JSON, XML and more. * ETL (Extract, Transform, Load) tasks and pipeline processing including Apache Airflow, monads and function chaining. * NLP (Natural Language Processing) using NTLK, SpaCy, Fuzzy Search, and regular expressions (Regex). * IPython/Jupyter notebooks for data science hosted on Deepnote, Gradio, and Google Colaboratory. * Data analysis and visualisation mainly with Pandas, Bokeh, Matplotlib, Plotly, Google Maps, and Folium. * Writing and using APIs with batch processing and concurrency e.g. with Asyncio, Multiprocessing, Threading. * YouTube/Video automation, video editing/processing, subtitles, speech-to-text and text-to-speech. Three decades of experience finding creative solutions to business and IT problems. Author of several open sources projects including: Log2d, CleverDict, CleverText, and EasyPyPI... downloadable from Github and the Python Package Index. Now taking on small, short to medium term coding projects on a flexible/part-time basis.

  • Adobe Premiere Pro
  • DaVinci Resolve
  • Natural Language Processing
  • Python
  • Python Script
  • Facebook Plugin
  • Social Media Management
  • Automation
  • Software Development
  • Data Scraping
  • YouTube Plugin
  • Twitter/X
  • Business Analysis
  • Video Production
Dave M.

Lincolnshire, United Kingdom

$111/hr
4.9
214 jobs

I am a experienced freelance software developer with over ten years experience providing web scraping and data extraction services using Python and Perl. I write custom code to crawl and extract different types of data from numerous sources including e.g. real-time data, websites requiring authentication, business listings, real-estate, and sports results websites. My expertise lies in automated web scraping of extremely hard to get data, websites with little or no structure and difficult to parse, large scale websites, websites using obfuscated protocols and authentication, including those using 'scraping protection' services e.g. glassdoor, distil, captcha, and sites that simply put - no-one else can scrape. I use a variety of methods of getting the data and aim to obtain the data as quickly, accurately and efficiently as possible. I work most effectively given well-defined specifications including website urls, keywords, search terms, preferred output format and update frequency. Data output usually is in CSV or SQL format and includes further post-processing of crawled data according to bespoke requirements. My source code is mainly written in Python and Perl, using version control Git and following agile and TDD software design techniques to ensure code cleanness, longevity, reliability and robustness. I also use other websites and tools such as Selenium, import.io and external libraries to further increase my productivity. I have experience in other languages Matlab, R, C++ for machine learning projects, in statistical analysis as well as databases SQL, MongoDB, and experience in Linux administration and many web API's including Dropbox, Twitter, Twilio (SMS) and Sendgrid (email). I also have completed and delivered a number of related projects using Python and Perl including fields such as deep learning, machine learning, multi-threaded applications, log file filtering, web app monitoring, notification systems and web apps. Please contact me if you have any available work. Thanks!

  • Perl
  • Python
  • GitHub
  • Data Mining
  • Web Crawling
  • Machine Learning
  • Data Scraping
  • MATLAB
Alex K.

Swanley, United Kingdom

$50/hr
4.9
43 jobs

My educational background is mathematics and finance. I hold a bachelors degree in mathematics and a masters degree in finance. As a freelancer I specialise in solving thorny technical real world problems. I can help you with any problems involving: Data processing and analysis Web scraping Mathematics Statistics Quant Finance Optimisation Linux system administration (including online cloud platforms) SQL database administration Scripting in VBA, python, bash, php and anything else that is similar Automation of repetitive administrative tasks (dovetails nicely with aforementioned tools) Any other technical problems in a variety of fields which don't neatly fit into this list Programming languages I use range from low to high level: Assembly C C++ Python Lua R VBA Bash PHP Google script Other tools at my disposal: Google Cloud Virtual machines Windows servers Linux servers I look forward to discussing your projects with you. Alex.

  • R
  • C++
  • C
  • SQL
  • Statistics
  • Mathematics
  • Assembly Language
  • Cryptography
  • API Integration
  • Cryptocurrency
  • PHP
  • Quantitative Finance
  • Linux System Administration
  • Linux
  • Google Cloud Platform
Zohaib J.

Wigan, United Kingdom

$40/hr
4.3
14 jobs

🏆 Top 3% on Upwork. ✅ Fluent English. ✅ Swift response and communications. ★★★ Top Rated Freelancer ★★★ As a passionate and dedicated full-stack web and mobile app developer, I bring over 10 years of hands-on experience in multiple frameworks to every project. With expertise in JavaScript, Python, React JS, React Native, Node JS, Django, Frappe, Flask, and more, I have a track record of delivering high-quality PWAs, ERPs, CMS/CRM, websites, and mobile apps across a wide range of niches, including health, beauty, and education. My Porfolio Website: shahzaibjamal.com WordPress Services: Custom theme design or theme/template modification Responsive HTML (Google mobile-friendly test, cross-device compatibility) Retina display support HTML5 animation WordPress/Woo back end development WordPress multisite and membership, BuddyPress, bbPress Custom plugin development 3rd-party services and payment systems API integration SEO, AMP compliance, CDN setup (Cloudflare) Support and warranty Great Experience with: E-commerce development Payment systems integration (PP, Stripe, Authorize.net, etc.) Google Maps API utilization (custom design, clusters, routing, radius, speed/time/distances calculation, etc.) Responsive CRM and dashboards for high-traffic web-projects Experience with Microsoft Power BI Attributes: Keep the warranty Always available Fast response and turnaround time === TAGS === ReactJS Developer ; PHP expert ; Fullstack developer ; Python. WordPress Developer, WordPress expert #Website, #Wireframes, #Icons, #Landing Page, #Email Template Design, #Prototype, #Website Redesign, #Sketches, #HTML5, #HTML, #CSS, #JavaScript, #PHP, #SCSS, #Less, #CSS3, #Sass, #Visual Design, #Graphic Design, #SEO, #Mobile App Design, #Website Development, #Responsive Design, #Squarespace, #WordPress, #Wix, #October CMS, #GoDaddy, #Gravity Forms, #WooCommerce, #Divi, #BuddyPress, #PayPal, #Contact Form 7, #bbPress, #Yoast SEO, #MailChimp, #Slider Revolution, #WPLMS, #Thrive Themes, #GetResponse, #LinkedIn, #Google AdSense, #Amazon, #Elementor, #Instagram, #WP Rocket, #Figma, #Adobe Illustrator, #Zeplin, #Adobe XD, #InVision, #Mockplus, #Adobe Photoshop, #Tablet, #Phone, #SQLite, #Redis, #MongoDB, #Oracle Database, #React, #Firebase, #React Native, #RESTful, #Android Studio, #Amazon Web Services, #Node.js, #GraphQL, #AngularJS Flutter, #jQuery Mobile, #Ionic Framework, #Xamarin, #Android iOS, #JavaScript, #Java, #PHP , #Kotlin, #CSS3, #HTML5, #Swift, #Objective-C, #Expo.io, #jQuery UI, #Mobile App Development, #App Store Optimization (ASO) , #ORM, #Ember.js, #Functional Programming, #Redux Framework, #Paypal Integration, #iPhone App Development, #Issue Tracking Systems, #Functional Testing, #Compiler, #Remote Management, #Slack, #iPad UI Design, #Object Oriented Programming (OOP) , #Microsoft Windows Azure, #sketch app, #Rackspace, #iPhone UI Design, #SCSS, #GUI Design, #API Testing, #CURL, #PhpStorm, #Payment Gateway Integration, #Google Cloud Platform, #NoSQL, #Angular 5, #SSL, #Skype, #Software Debugging, #2D Animation, #Redux Form, #FTP, #3D Animation, #Debian OS, #Android SDK, #Mobile App Testing, #App Usability Analysis, #iPad App Development, #JSON API, #Mobile UI Design, #App Store Google APIs, #Amazon S3, #Apple Xcode, #API Documentation , #API Development, #Mobile Development Framework , #AWSApplication , #Animation, #Application Lifecycle Management, #Apple macOS, #XML, #Design, #Lumen Micro Framework, #Sketch, #Geolocation, #Website Localization, #Payroll Processing, #PayPal Development, #Paypal Integration, #WPML, #Web Design, #OptimizelyWeb/graphic Design, #WordPress Plugin, #Page Speed Optimization, #Payment Processing, #GDPR, #Wordpress Theme, #AMP Web Development, #Logo Design, #PSD to Wordpress, #Authorize.Net, #Accessibility, #WordPress Website, #Payment Gateway Integration, #Frontend Development, #Google Search Console, #Data Processing, #Regular Expressions, #Yandex API, #VKontakte API, #Flat Design, #MySQL, #Data Encoding, #CURL, #Yandex.Metrica, #Angular 5, #2D Animation, #Acuity Scheduling, #SMS Gateway, #Google Analytics API, #Load Testing, #PhpBB, #NGINX, #Google AdSenseTwitter Bootstrap, #AngularJS, #Character Design, #Data Management, #2D Design Regards, Shahzaib Jamal

  • Squarespace
  • WordPress
  • Shopify
  • WordPress Theme
  • WordPress Bug Fix
  • WordPress Website
  • WordPress Backup
  • WordPress Migration
  • WordPress Development
  • WordPress e-Commerce
  • Ecommerce Website Development
  • Google Cloud Platform
  • Database Development
  • WordPress Consultation
  • WordPress Landing Page
Umar K.

Sheffield, United Kingdom

$20/hr
4.8
47 jobs

✅ 6000+ Jobs completed ✅12+ Years ✅90% Repeat Rate ✅100% Completion Rate I'm experienced Python developer specializing in web scraping, data automation, and eCommerce integration. Over the past decade I’ve built and delivered robust pipelines and automation systems for retailers, marketplaces, and B2B data teams with a focus on real-time product price/stock synchronization, clean data exports, and production-ready integrations. What I do for clients (typical outcomes) 💡 Real-time price & stock sync: reduce manual updates and oversells by automating supplier-to-store feeds. 💡 Reliable scrapers and crawlers: resilient Playwright/Selenium/Requests scripts with proxy rotation, fingerprinting and captcha handling. 💡 Data pipelines & storage: clean, validated output (CSV/JSON), PostgreSQL/Supabase integration and monitoring dashboards. 💡 Competitor tracking & market intelligence: scheduled scraping + enrichment for pricing, availability and competitive analysis. 💡 Lead generation & enrichment: high-quality prospect lists with verification and enrichment for outreach campaigns. Deliverables you’ll get ⭐ Production-grade Python scraper(s) with logging and error handling ⭐ Scheduled deployment (cron / serverless) and proxy config ⭐ Data schema & cleaned dataset (CSV/JSON/Postgres) ⭐ Integration with your store (Shopify API / Admin upload) or your DB (Supabase/Postgres) ⭐ Documentation, runbook, and 14–30 days of support after delivery Industries I serve (most traction) 🔸 Retail & eCommerce (product catalogs, multivendor sync) 🔸 Industrial & Parts suppliers (Kramp, Granit, Trilanco type catalogs) 🔸 Marketplaces & classified platforms 🔸 Lead gen & B2B data enrichment projects Why clients hire me 🔸Deep technical experience: production scraping at scale with anti-bot strategies. 🔸Business-minded delivery: I focus on reliable automations that reduce operational costs. 🔸End-to-end service: from scraping to DB integration, scheduling, and monitoring. Keywords: Python, web scraping, playwright, selenium, requests, beautifulsoup, scrapy, shopify, woocommerce, magento, data extraction, data engineering, api integration, proxy rotation, captcha solving, data enrichment, ecommerce automation, price monitoring, inventory sync, supabase, postgresql, aws, serverless, cron jobs

  • Microsoft Excel
  • Data Scraping
  • Python
  • Selenium
  • Data Mining
  • Automation
  • Python-Requests
  • Flask
  • Agile Software Development
  • Web Development
  • Database Management
  • Digital Marketing
  • Web Scraping Software
  • Email Marketing
  • Web Scraping
Seraphina A.

Sutton, United Kingdom

$170/hr
4.8
18 jobs

With 12 years of experience across cloud engineering, backend systems, and automation, I design secure, production‑ready infrastructure and Python‑based solutions. My background in mathematics shapes a structured, analytical approach to problem‑solving—whether I’m architecting a GCP/AWS environment, building automation pipelines, or developing backend services. Core Capabilities - Cloud & DevOps: GCP, AWS, Docker, Terraform, CI/CD, serverless workflows - Backend Engineering: Python, Flask/Django, REST APIs, secure infrastructure - Automation & Data Pipelines: Bash, NLP/regex workflows, large‑scale data handling - API Integrations: Google Workspace, SaaS platforms, custom connectors - Security & Guardrails: IAM best practices, secrets management, PII‑safe workflows - Trading Automation (select projects): Pine Script strategies, MetaTrader EAs - Applied NLP/ML (select projects): text processing, classification, embeddings I specialise in modular, production‑ready solutions with clear documentation and async delivery. Whether you need a clean cloud foundation, a backend system built, an automation pipeline designed, or a trading/NLP workflow implemented, I deliver senior‑level engineering with clarity and precision.

  • Regex Writing
  • Python
  • Data Scraping
  • Data Mining
  • Scrapy
  • Data Science
  • Natural Language Processing
  • Mathematics
  • Reverse Engineering
  • Algorithm Development
  • Forex Trading
  • TradingView
  • Trading Automation

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