Freelance Backend Engineers in MississaugaFreelance Backend Engineers in Mississauga
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Rumman Sadiq's avatar
Rumman Sadiq
proMississauga, Canada
#1 AI Engineer on Upwork | LLM Agents & React/Node
New to Contra
#1 AI Engineer on Upwork | LLM Agents & React/Node
Cover image for e-Dot: Construction Project Management Platform
e-Dot: Construction Project Management Platform
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11
Cover image for Lalechet — Kosher Travel &
Lalechet — Kosher Travel & Concierge Booking Platform Category: Travel Booking Platform / Tour Operator Suite Tech Stack: Ruby on Rails 7, PostgreSQL, Sprockets, Devise, Delayed Job, Paperclip, Savon (SOAP), Amadeus GDS, Gimmonix, Travel Guard, Duffel, Google Maps + Places, Dynalink PBX, QuickBooks Online, OpenAI, Pusher, Sendgrid, Twilio, Stripe, AWS S3 Our Contributions: Full Stack Lalechet is a full-service travel concierge platform built for the Jewish travel market, handling everything from custom itineraries and mekomos hakedoshim (holy sites) tours to group getaways, charter flights, and private jet bookings. We built the platform end-to-end — a Rails 7 application integrating live GDS inventory through Amadeus and Gimmonix, real-time flight booking via Duffel, and travel insurance through Travel Guard, all wrapped in a secure Devise-powered authentication layer. 🔗 https://lalechet.com/website
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238
Cover image for Coloc Housing – Coliving Platform
Coloc Housing – Coliving Platform
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11
Cover image for The Purple Carrot – E
The Purple Carrot – E Commerce Marketplace Developed and enhanced a scalable e commerce marketplace using React, TypeScript, and Ruby on Rails. Built customer facing features, optimized PostgreSQL queries, integrated analytics with Redshift and Looker, and contributed to CI/CD pipelines and cloud deployments on Heroku to improve performance and reliability.
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204
Backend Engineer(6)
Ashiq Alibhai's avatar
Ashiq Alibhai
Mississauga, Canada
Tech Lead | .NET, Azure, SaaS, APIs, Azure, CI/CD, Security
Tech Lead | .NET, Azure, SaaS, APIs, Azure, CI/CD, Security
Cover image for Genetic Programming Framework in .NET Core
Genetic Programming Framework in .NET Core
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6
Cover image for Game Analytics Platform with Public APIs
Game Analytics Platform with Public APIs
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2
Cover image for Full-Stack Web Application for Transport Canada
Full-Stack Web Application for Transport Canada
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4
Cover image for Scalable RESTful API for Enterprise Backup Solutions
Scalable RESTful API for Enterprise Backup Solutions
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5
Backend Engineer(4)
Batuhan Ipci's avatar
Batuhan Ipci
Toronto, Canada
Full-Stack Web Developer & Designer - foamonlatte.co
Full-Stack Web Developer & Designer - foamonlatte.co
Cover image for Custom Shopify Application + Inventory Management System
Custom Shopify Application + Inventory Management System
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8
Cover image for CPOS Pay and Hub Web App Development
CPOS Pay and Hub Web App Development
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24
Cover image for Fur Loft Pet Boutique & Spa
Fur Loft Pet Boutique & Spa
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19
Cover image for Youth Empowerment Mobile App Development for Pebblz
Youth Empowerment Mobile App Development for Pebblz
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43
Backend Engineer(1)
Burak Taban's avatar
Burak Taban
Toronto, Canada
Software engineer—AI apps, web2/3, e-commerce, dashboards
Software engineer—AI apps, web2/3, e-commerce, dashboards
Cover image for Tribation SportTech Mobile Application
Tribation SportTech Mobile Application
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23
Cover image for RenovationTo Website Design and Development
RenovationTo Website Design and Development
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13
Cover image for Public Construction Group Website
Public Construction Group Website
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12
Cover image for IFERCO - BUILD. INVEST. INNOVATE.
IFERCO - BUILD. INVEST. INNOVATE.
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15
Backend Engineer(1)
Khaled NQ's avatar
Khaled NQ
Toronto, Canada
Flutter (Fullstack) Engineer
Flutter (Fullstack) Engineer
Cover image for PAR Engagement Platform Development
PAR Engagement Platform Development
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17
Cover image for Development of goCollect Invoicing Application
Development of goCollect Invoicing Application
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9
Cover image for Hume Health Flutter Application
Hume Health Flutter Application
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5
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Backend Engineer(1)
Asad Alvi's avatar
Asad Alvi
Richmond Hill, Canada
Experienced in ERP, CRM and Mobile App Dev
Experienced in ERP, CRM and Mobile App Dev
Cover image for Agile Apron
Agile Apron
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30
Cover image for Revrecycle: ERP & Marketing Solution for Recycling Industry
Revrecycle: ERP & Marketing Solution for Recycling Industry
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16
Cover image for OOB Kitchen: E-commerce for Restaurants
OOB Kitchen: E-commerce for Restaurants
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19
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Backend Engineer(3)