Hire the Best Open Source Developers
in Canada

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Volodymyr O.

Winnipeg, Canada

$50/hr
5.0
8 jobs

I build and maintain custom WordPress sites that non-technical teams can actually run themselves: custom plugins, secure and well-maintained builds, and themes made from scratch. 7 years of WordPress development, with a 5.0 rating on every project I've delivered here. My focus is custom plugin development with proper GitHub release workflows, WordPress security and ongoing maintenance, and custom ACF/SCF theme architecture. I also build advocacy and campaign sites on NationBuilder with Liquid. How I can help: - Custom WordPress plugins and widgets built to do exactly what you need - WordPress security audits, malware cleanup, hardening, and maintenance - NationBuilder development with Liquid templating - Custom ACF/SCF themes so your team updates content without a developer - WooCommerce: payments, subscriptions, tiered pricing, custom checkout - PHP 8 upgrades and Core Web Vitals / caching (LiteSpeed, QUIC.cloud, Cloudflare) Tell me what you're working on and I'll reply with a clear plan, a real estimate, and honest timelines. I keep you posted and I don't disappear.

  • WordPress
  • PHP
  • Advanced Custom Fields Plugin
  • Theme Development
  • Plugin Development
  • WooCommerce
  • JavaScript
  • HTML
  • HTML5
  • CSS 3
  • WPML
  • NationBuilder
  • Web Application Security
  • Website Maintenance
  • Elementor
  • React
  • MySQL
Jose M.

Halifax, Canada

$45/hr
5.0
218 jobs

Experienced FE and BE developer specialized in development of websites and applications for various small and medium sized business across North America and Europe. Primary specialization in FE development include VueJS, EmberJS, ReactJS, React Native, and pure Javascript; BE development specialization include Object-oriented PHP, NodeJS, MySQL and MongoDB. Experienced in development of custom made systems as well as open-source platforms/frameworks such as Wordpress, SilverStripe, Laravel.

  • JavaScript
  • Vue.js
  • WordPress
  • WordPress Plugin
  • PHP
  • Laravel
  • React
  • Stripe
  • API Integration
  • jQuery
  • API
  • React Native
  • Ember.js
  • MySQL Programming
  • Web Application
Saad S.

Edmonton, Canada

$15/hr
5.0
1 jobs

🐦 Early bird in Flutter (2018) 📊 Implemented Complex Algorithms & Developed 🏆 Award Winning Hybrid Mobile Applications for US, Canada and UK 💎 Promising Quality, Optimized for Speed, Efficiency & Security 🛠️ Developed, Delivered & Published 30+ Mobile Apps Using Flutter, Flutter Flow, React Native and Nodejs and mostly in 🌐 US, Canada, and UK 🚀 Valuable contributions over 15 fortune 500 companies and over 12 teams in US, UK and Canada 👋 Responsive Communication & Agile Methodologies & Ongoing Support 💻 7+ Years Of Experience With AI Powered Mobile App Developer | Flutter, FlutterFlow & React Native 🏆 Award Winning Mobile App Developer & AI-Powered Mobile App Developer with a robust focus on Flutter, FlutterFlow, React Native, Dart, and Nodejs. My expertise encompasses developing scalable and efficient applications that leverage clean architecture and incorporate complex features tailored to meet modern business and user needs and successfully Developed, Delivered & Published 30+ Mobile Apps Using Flutter, FlutterFlow, React Native and Nodejs for SME's clients and fortune 500 clients across various industries around the globe mostly in US, UK and Canada. Experience is the main factor because to update an existing code is what I'm really good at and to troubleshoot Mobile Apps issues such as Flutter, Flutter Flow & React Natice. The best part is I'm also active in the open-source community, contributing significantly to the Flutter ecosystem and its Firebase packages Skills & Services ⚡ Flutter, Flutter Flow & React Native: Built 30+ Flutter applications for satisfied clients. I've led a team of over 10 developers, delivering modern, scalable, and robust mobile solutions. ⚡ Firebase, Firestore, GCP, Digital Ocean, AWS, Cloud ways, Elastic Beanstalk, Heroku, EC2, RDS, Loadbalance: Utilized various cloud services, including GCP, Digital Ocean, AWS, and Cloud ways. ⚡ MySQL/NoSQL: Design scalable applications using cutting-edge caching mechanisms with Redis and high-performance MongoDB instances from Digital Ocean. ⚡ PayPal, Stripe, ApplePay and InApp Purchases, 2checkout, Braintree, Authorized.net, GooglePay, Secure Payment Processing via Banks and many other : Extensively used payments, with the apps I've developed processing over $1M without any software issues. Used Flutter package that interfaces with Stripe hardware readers. ⚡ GPS Tracking, Socket, Twilio WebRTC (Video/Audio Calling/VoIP), WebRTC, Google Map, Bitgo, Skyscanner, Google Finance, Linkedin, Docusign, Youtube, Facebook, Twitter ⚡ CI/CD pipelines and used Circle CI, Jenkins, GitLab CI Worked on several projects mainly in the field of Entertainment, Healthcare, RealEstate, Market Place, Education, Restaurents, Fashion, E-Commerce/Retail, SAAS, SAP, Tech StartUp and Stealth (creating from scratch, redesigning, bug fixing, deploying). STRING, Youth Health Tech, Clobber Swap are some of the best examples, that I've worked with complete Agile using Flutter, Flutter Flow, React Native, and Twilio. With extensive experience in eCommerce, Dubai Government, Banking & Finance, and utility domains with complete Agile & Waterfall project delivery life cycle and excellent presentation skills. I'm a Full-Time Freelancer and will be directly work for you or your team. In order to demonstrate the best quality work, share the requirements or details of the business and let's create something extraordinary together. I'm available to accommodate different time zones like EST, PST, MST, and UTC aswell. Let's sync and will start right away!

  • DevOps
  • Docker
  • CI/CD
  • Linux
  • MLOps
  • Python
  • NGINX
  • GitHub
  • PostgreSQL
  • FastAPI
  • Cloud Engineering
  • Microsoft Windows PowerShell
  • API Integration
  • Machine Learning
Mamta B.

Barrie, Canada

$45/hr
4.9
80 jobs

🎯 Need an expert who can build or optimize your system right, the first time? I’m Mamta Bajaj, a Top Rated Plus developer with $100K+ earned and a 100% Job Success Rate. I specialize in building secure SaaS applications, complex financial architectures, and production-ready AI/LLM application layers without endless revisions or vague timelines. Instead of just writing code, I architect scalable solutions, design secure database schemas, and comfortably step into existing codebases to fix broken payment loops or embed modern AI features. 🤖 AI Applications & LLM Integrations • Agentic Workflows: Designing autonomous backend agents using custom Node.js, Laravel, or Python scripts to automate complex multi-step business logic. • LLM API Integrations: Connecting OpenAI (ChatGPT), Anthropic, and open-source models into consumer web apps for text processing, semantic search, and data extraction. • Data & PDF Analysis: Building secure, Zero-PII browser extensions and backend parsing systems for intelligent document metadata analysis. 💳 Payment & Financial Tech Expertise (Stripe Specialist) • Stripe Connect: Multi-tenant setups, marketplace routing, and split-payment flows. • Stripe Billing: Advanced subscription lifecycles, metered billing, and webhook synchronization. • Cross-Platform: Syncing web checkouts side-by-side with mobile In-App Purchases (Apple/Google). 💻 Core Technical Stack • Backend & API: Laravel (PHP), Node.js, RESTful API architecture, and Supabase. • Database: High-performance MySQL/PostgreSQL schema design, query optimization, and migrations. • Frontend & Automation: React, Angular, Vue.js, n8n, Zapier, and Twilio API integrations. 🚀 Where I Add Immediate Value • SaaS MVP Development: Building and launching clean, reliable products in 3–4 weeks. • Codebase Rescue & Polish: Onboarding fast to existing repos, fixing legacy payment bugs, or cleaning up messy database logic. 📍 Based in Barrie, Ontario (EST). Seamless communication and full timezone alignment with North American clients. Click "Invite to Job" on the right, and let’s get your project shipped cleanly and on schedule.

  • RESTful API
  • MySQL Programming
  • Ecommerce Website Development
  • MongoDB
  • Angular
  • Laravel
  • Node.js
  • PHP
  • Web Development
  • CakePHP
  • Blockchain
  • Sails.js
  • Stripe
  • API Integration
  • API Development
Eric C.

Toronto, Canada

$68/hr
5.0
8 jobs

🌟 Proven Ex-Amazon Senior Software Engineer with 15+ Years of Experience 🌟 Are you seeking a seasoned AI-focused software engineer with a background in both FinTech and tech giants like Amazon? Look no further! With over 15 years of hands-on experience, including tenure as part of a dynamic FinTech team and a successful stint at Amazon, I bring a unique blend of expertise, innovation, and leadership to every project. My strength lies at the intersection of AI, product engineering, and system architecture: I don’t just build models, I truly enjoy building them into real-world systems that are secure, performant, and maintainable. 🔍🔍🔍 What Sets Me Apart ✅ Amazon-Caliber Expertise Having navigated the intricate systems and fast-paced environment at Amazon, I bring a wealth of experience in developing large-scale solutions that can withstand the demands of the modern digital landscape. ✅ AWS Architecture Certifications Holding AWS architecture certifications, I bring a deep understanding of AWS services and best practices to architect and deploy scalable, secure, and highly available solutions. ✅ Applied AI & LLM Expertise I specialize in practical AI solutions, including: ▪️LLM-powered applications & chatbots (GPT-4 / GPT-4o, Claude, LLaMA) ▪️Retrieval-Augmented Generation (RAG) and agent-based workflows ▪️AI automation for customer support, internal tools, and analytics ▪️Speech & multimodal AI (STT / TTS using Whisper, ElevenLabs) ▪️Computer vision pipelines (object detection, OCR, image analysis) I focus on accuracy, latency, cost optimization, and real user impact. ✅ Full-Stack + AI Integration Unlike pure ML engineers, I deliver end-to-end systems, including: ▪️AI-backed APIs and services (Python, FastAPI, Flask) Frontend & mobile integration (React, React Native, Next.js) ▪️Secure auth, data pipelines, and monitoring ▪️Clean UX for AI-powered features ✅ Cloud & Deployment Expertise I have extensive experience deploying and scaling AI systems on: ▪️AWS (EC2, Lambda, S3, SageMaker) ▪️GCP & Azure (AI/ML services, storage, serverless) ▪️Containerized and serverless architectures for cost-efficient scaling 🚀🚀🚀 Services I Offer 🔹 AI-Powered Product Development LLM apps, chatbots, AI copilots, and automation systems designed for real users. 🔹 LLM & AI Integration GPT / Claude / open-source model integration, RAG pipelines, agents, and tooling. 🔹 System & AI Architecture Designing scalable, secure architectures that support AI workloads in production. 🔹 Code Review & AI Readiness Audits Evaluating AI systems for security, performance, reliability, and cost efficiency. 🔹 Technical & AI Consulting Clear, practical guidance on model selection, architecture, and deployment strategy. 💬💬💬 Free Technical Consultation - I provide a complimentary technical consultation to assess architecture, AI feasibility, and production considerations before we start. Let's collaborate to bring your vision to life and elevate your software projects to new heights. Reach out today to discuss how I can contribute to your success! 🚀

  • SQL
  • HTML5
  • React
  • NoSQL Database
  • Python
  • JavaScript
  • Node.js
  • AWS CloudFormation
  • React Native
  • Firebase
  • Angular
  • AWS Lambda
  • AWS Amplify
  • AWS AppSync
  • AWS Development
  • C++
  • C
  • Bash Programming
  • Java
Yaming D.

Ottawa, Canada

$28/hr
5.0
1 jobs

I help startups build and scale SaaS products, backend systems, and AI-powered applications. I specialize in Laravel development, API integrations, automation systems, and subscription-based SaaS products. I’ve built systems including: SaaS platforms with billing and subscriptions AI-powered applications using LLM APIs Chrome extensions and workflow automation tools Real-time backend systems and APIs Payment systems and Stripe integrations Tech stack: Laravel, PHP, MySQL, Redis, Docker, Stripe, OpenAI API, Claude API, JavaScript I focus on building reliable backend systems, clean architecture, and fast delivery. If you need a developer to build or improve your backend system, I can help.

  • Node.js
  • PHP
  • Python
  • NestJS
  • MySQL
  • Redis
  • Kubernetes
  • React
  • Vue.js
  • Golang
  • HTML
  • Bootstrap
  • Laravel
  • DevOps
  • Web Development
  • 3D Avatar
  • LiveAgent
  • TypeScript
  • Tailwind UI
  • Docker

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