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8.4
8.4
99%

Quinte West, Canada
$30 USD per hour
Fast & Efficient Tecrific Service "Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction, and skillful execution; it represents the wise choice of many alternatives." I am a full-stack developer with extensive experience building modern, scalable, and high-performance web applications. From frontend user experiences to backend architecture, APIs, databases, cloud infrastructure, and deployment pipelines, I provide end-to-end development solutions tailored to business needs. My expertise includes designing and developing responsive web applications, integrating third-party services, optimizing performance, troubleshooting complex technical issues, and maintaining reliable production environments. I focus on writing clean, maintainable code and delivering solutions that are robust, scalable, and built for long-term success. I take pride in clear communication, attention to detail, and delivering projects on time. I am committed to providing exceptional service and going the extra mile to ensure every client is satisfied with the final result. My reputation is built on reliability, professionalism, and consistently delivering high-quality work.

9.4
9.4
95%

Mississauga, Canada
$25 USD per hour
We are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS 1.2) JAVASCRIPT: JavaScript, ES6+, Typescript, Node.js, MEAN, MERN, MEVN, Angular, React.js, Vue.js, Nuxt.js, Next.js, Gatsby.js, jQuery 1.3) BACK-END 1.3.1) LAMP (Linux, Apache, MySQL, PHP) including Symfony, Laravel, Yii, Zend, CodeIgniter, CakePHP 1.3.2) Python (Python, Django, Flask, FastAPI) 1.3.3) .NET stack technologies (C#, ASP.NET, .NET Core) 1.4) OPEN SOURCE SOLUTIONS 1.4.1) E-commerce Platforms: Shopify, Magento, WooCommerce, Prestashop, OpenCart, BigCommerce, Shopware, osCommerce 1.4.2) CMS: WordPress, Drupal, Joomla, TYPO3 etc. 1.4.3) CRM: SuiteCRM, SugarCRM 2) MOBILE DEVELOPMENT 2.1) Android native development: Java, Kotlin 2.2) iOS native development: Swift, Objective-C 2.3) Cross platform development: Flutter, React Native, Ionic 3) DESIGN 3.1) Website Design (UI (User Interface), UX (User Experience) etc.) 3.2) Graphic Design (Creative Design, Digital Design, Advertisement Design etc.) 3.3) Corporate Identity (Brand Boooks, Business Cards, Logos, LetterHeads etc.) 4) INTERNET MARKETING 4.1) Social Media Marketing (Linkedin, Xing, Facebook, YouTube, Instagram etc.) 4.2) SEO (SEO Copywriting, SEO Auditing, White Hat SEO) 4.3) PPC Marketing (Google Adwords, Google Ads, Facebook Ads, YouTube Ads, Instagram Ads etc.) 4.4) Email Marketing 5) MANAGED SERVICES 5.1) 24/7 TECHNICAL SUPPORT 5.2) SYSTEM ADMINISTRATION SERVICES Our team of high qualified System Administrators have huge experience with technologies covering: - different distributions of OS Linux, Unix and MS Windows Server systems; - different types of virtualization (ProxMox, Virtuozzo, OpenVZ, KVM, XEN, VMware, Hyper-V); - VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning etc.; - cloud solutions (AWS, MS Azure, Google Cloud, Alibaba Cloud, OVHcloud, DigitalOcean, Linode etc.). 6) HOSTING SERVICES provided by our hosting subdivision under trade mark "TanHost" 6.1) Cloud based solutions (e.g. configuration and technical support of Private Clouds); 6.2) Сollocation services, the providing for rent dedicated and VPS/VDS (virtual servers); 6.3) Shared Hosting; 6.4) Domain names registration services; 6.5) SSL Certificates. 7) EMBEDDED SYSTEMS 7.1) Embedded software development 7.2) Internet of Things (IoT) 7.3) Microcontrollers programming 7.4) Arduino microcontrollers programming OUR CREDO: Reputation – is above anything else! We help our customers to grow success and we grow together with our customers! We are flexible to meet our clients' needs. We make it simple...

9.0
9.0
99%

Oakville, Canada
$30 USD per hour
We’re A2 Design, a full-cycle development team that turns ideas into working digital products. For over 15 years, we have helped startups and growing businesses build custom web apps, marketplaces, and e-commerce solutions. With 190+ satisfied clients on Freelancer, a 99% success rate on completed jobs, our 4.9⭐ rating, and Preferred Freelancer badge, we deliver reliable results that matter. ✅ What we do best: - Custom Web Apps (Laravel, Node.js, React, Vue, Next.js) - Scalable Marketplaces & Platforms (B2B / B2C / On-demand) - E-commerce Solutions (WooCommerce, Shopify, custom) - API Integrations & Automation - Mobile-first, Responsive Design Have a project in mind? Let’s discuss how we can help you build and scale it. 📩 Message us today and we’ll respond right away.

7.6
7.6
91%

Richmond Hill, Canada
$25 USD per hour
I lead a multidisciplinary engineering team delivering integrated solutions across mechanical design, electronics & embedded systems, industrial engineering, and business optimization, covering industrial, energy, and mining engineering applications. Our strength lies in combining technical expertise with structured project execution — transforming ideas into production-ready and performance-optimized systems. 🔹 Mechanical & Product Engineering CAD/CAM Design Mechanical Design & Design for Manufacturing (DFM) Design for 3D Printing SolidWorks Modeling & Simulation 3D Modeling & Product Visualization Sheet Metal & Weldment Design GD&T & BOM Preparation KeyShot Visualization & Motion Structural Analysis (ANSYS & ABAQUS) HVAC, Refrigeration & Plumbing Systems Design Solar Energy System Design Life Cycle Assessment (LCA) Energy Simulation (DesignBuilder, EnergyPlus, TRNSYS, PVSyst) SimaPro Revit MEP, BIM Coordination, Navisworks & Construction Documentation 🔹 Structural & Construction Engineering Structural Engineering Construction Engineering Steel Structure Design Structural Analysis (ETABS, SAP2000 & SAFE) Existing Building Assessment & Retrofitting AutoCAD Structural Drafting 🔹 Electronics & Embedded Systems PCB Design (Single/Multi-layer, SMD/THT) Embedded Firmware (C, Python, STM32, ESP32, ARM MCUs) Power & Battery Systems (Li-Ion/LiPo, Low-Power Design) IoT & Wireless (BLE, WiFi, MQTT, Cloud IoT) Protocols (I2C, SPI, UART, CAN, RS485, MODBUS) Sensors & Control Systems Arduino & Raspberry Pi (Embedded Linux, Edge Computing) Industrial Automation (PLC/SCADA) Embedded Product Development & Prototyping Testing & Validation (HIL, SIL, Unit/Integration) Test Automation (Robot Framework, VectorCAST, MATLAB) Automotive Embedded Testing (ISTQB Practices) 🔹 Engineering Management & Optimization Project planning & scheduling Resource & production planning Risk management & process optimization Business intelligence & Power BI dashboards Python-based data analysis ML & predictive modeling Forecasting, Excel automation Cost & time estimation Technical & research writing Optimization (GA, NSGA-II, PSO) Decision systems & MCDM 🔹 AI, Engineering Analytics & Optimization Machine learning & deep learning Data science & engineering analytics SVM, ANN, MLP, CNN Feature selection & predictive modeling Operations research & optimization Scientific & numerical modeling Edge AI & Embedded Intelligence Systems AI-driven decision support systems We improve engineering efficiency, productivity, and system performance across technical and operational domains. We also bring hands-on experience in industrial equipment design, including HVAC, refrigeration systems, and production-ready mechanical solutions using SolidWorks and industry-standard workflows. If you are looking for a technically strong engineering partner capable of handling multidisciplinary projects from concept to implementation, I would be happy to discuss your project

7.1
7.1
99%

REGINA, Canada
$35 USD per hour
I have been working as a software engineer since 2001. I'm professional in that career as a web and windows developer using .Net - C# - and VB.Net with any Database - SQL Server - Oracle - Access - MySQL - IBM Informix - and DB2

6.8
6.8
98%

Montreal, Canada
$50 USD per hour
My name is Alexandre Kharlamov and I am an experienced computer programmer working freelance full time since 2012, writing mostly in C/C++/Javascript, with a lot of experience in full-stack webdev, desktop apps and games. Desktop Apps & Games (Windows/Linux), Games, Web Dev, Arduino, Raspberry Pi. My areas of expertise: -Portable Linux/Windows software in C/C++/Javascript -Game programming: C/C++, Javascript, HTML5. I make web games from scratch, or using libraries or game engines like Bevy. -Web programming including database design with Javascript/jQuery and SQL, including UI, CSS and 3d graphics in WebGL. -Arduino/ESP32/Raspberry Pi programming. Linux is my desktop OS, but I have a Windows box, which allows me to create cross-platform desktop software.

6.9
6.9
98%

TORONTO, Canada
$35 USD per hour
With a robust decade of dedicated experience, I bring a wealth of expertise to the realm of enterprise mobile applications and web development. Over the years, I have honed my skills in crafting sophisticated solutions that seamlessly blend innovation and functionality. From architecting scalable mobile applications to designing dynamic web platforms, my commitment to excellence has consistently delivered results. With a keen understanding of the ever-evolving tech landscape, I am poised to transform your ideas into cutting-edge realities, ensuring a seamless and impactful digital presence for your enterprise. Experienced in Android, SWIFT, Firebase, .net core,API, react native, Angular 2+, AWS

5.9
5.9
96%

Kitchener, Canada
$40 USD per hour
I build scalable, robust, and high-quality software systems for businesses. I have more than 10 years of software development experience using a variety of tools and technologies: dotnet, java, php, sql, javascript, etc

8.0
8.0
93%

Calgary, Canada
$20 USD per hour
At Ludiac Solution, We don't just write code we architect, design, develop, deploy, and maintain complete digital products from concept to production. Our mission is to build secure, scalable, high-performance software that accelerates business growth and delivers measurable results. 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 * Custom Web Applications * Enterprise Software Development * SaaS Platform Development * CRM & ERP Systems * LMS & CMS Development * REST API & GraphQL Development * Payment Gateway Integration * Authentication & Authorization * Real-Time Applications 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 * React.js * Next.js * Vue.js * Angular * HTML5 * CSS3 * Tailwind CSS * Bootstrap * JavaScript * TypeScript 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 * Node.js * NestJS * Laravel * Django * FastAPI * Flask * ASP.NET * .NET Core * Core PHP 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 * PostgreSQL * MySQL * MongoDB * Redis * SQLite 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 * Flutter * React Native 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 * Android App Development * iOS App Development * Cross-Platform App Development * UI/UX Design * Firebase Integration * Push Notifications * Integration * Google Maps API * App Store & Google Play Publishing * App Maintenance & Performance Optimization 𝗔𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 * AI Agent Development * Agentic AI Systems * AI Chatbots * Conversational AI * OpenAI Integration * LangChain * Hugging Face * Large Language Models (LLMs) * Retrieval-Augmented Generation (RAG) * Machine Learning * Image Processing * AI Automation * AI Mobile Applications Cloud & DevOps 𝗖𝗹𝗼𝘂𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 * Amazon Web Services (AWS) * Microsoft Azure 𝗗𝗲𝘃𝗢𝗽𝘀 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 * Docker * Docker Compose * Kubernetes * CI/CD Pipelines * GitHub Actions * Server Deployment * Vercel * Cloud Migration * Infrastructure Automation * Performance Optimization * Monitoring & Logging 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 * API Development & Third-Party Integrations * E-Commerce Development * UI/UX Design 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗟𝘂𝗱𝗶𝗮𝗰 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻? ✅ 14+ Years of Industry Experience ✅ 500+ Successfully Delivered Projects ✅ Experienced Full-Stack Development Team ✅ AI & Automation Specialists ✅ Cloud & DevOps Experts ✅ Clean, Secure & Scalable Code ✅ Transparent Communication ✅ Fast Response Time ✅ On-Time Project Delivery ✅ Free Post-Launch Technical Support ✅ Flexible Working Hours Across Multiple Time Zones 𝗢𝘂𝗿 𝗖𝗼𝗿𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 * AI Development & Automation * Machine Learning Solutions * Full-Stack Web Development * Mobile App Development * SaaS Product Development * Enterprise Software Development * CRM, ERP, LMS & CMS Development * API Development & Integration * Cloud Architecture & DevOps * UI/UX Design * E-Commerce Solutions * Custom Software Development 𝗗𝗠 𝗨𝗦 𝗙𝗢𝗥 𝗙𝗥𝗘𝗘 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡
A SQL developer is a database specialist who designs, writes, and optimizes Structured Query Language code to store, retrieve, and manage data inside relational database systems. SQL developers build the queries, stored procedures, views, triggers, and schemas that power applications, reporting tools, and analytics pipelines across virtually every data-driven business.
Hiring a freelance SQL developer gives you direct access to the engineer who will turn raw business requirements into reliable, performant database code. The work goes far beyond writing SELECT statements. A skilled SQL developer designs normalized schemas, enforces referential integrity, tunes slow queries, and ensures that the data layer keeps pace with application growth.
Commercially, this matters because the database is usually the bottleneck. Slow queries cost conversions, broken reports cost decisions, and poorly designed schemas cost months of refactoring. A competent SQL expert prevents those costs and turns data into a strategic asset.
SQL development covers a broad set of tasks. Most freelance engagements include some combination of the following:
A strong SQL consultant is fluent across multiple relational engines and the surrounding ecosystem. Common platforms and tools include:
Almost every sector that handles structured data benefits from SQL expertise. Typical use cases include:
The strongest SQL specialists combine theoretical database knowledge with hands-on experience optimizing real workloads. When reviewing candidates, look for portfolios that include schema designs, before-and-after query tuning examples, and migration case studies. Vendor certifications such as Microsoft Certified: Azure Database Administrator Associate, Oracle Database SQL Certified Associate, or PostgreSQL Associate Certification are useful credibility signals, though practical experience usually carries more weight.
Ask candidates to walk through a query they optimized and explain the reasoning. The ability to read execution plans, identify index opportunities, and justify schema decisions separates senior database developers from junior ones.
Sample interview questions you can use directly:
Freelancer.com gives you access to a global pool of database engineers covering every major SQL dialect, cloud platform, and industry vertical. Whether you need a short engagement to fix a slow report or a long-term database architect to design a new data warehouse, you can post a project on Freelancer.com and receive competitive bids within hours.
Profiles on Freelancer.com include verified ratings, completion rates, portfolios, and client reviews, so you can shortlist confidently. Milestone Payments hold funds securely and only release them when you approve the work, giving both sides a clear, protected workflow. The scale and diversity of freelancers on Freelancer.com means you can match technical specialty, time zone, and budget to your exact project.
Hiring a SQL developer is straightforward when you describe the database environment and the outcome you need. The clearer your brief, the more accurate the bids will be. The process below walks through how to post your project, evaluate proposals, and award the work with confidence.
The project post is the single biggest determinant of bid quality. A precise brief filters for SQL developers whose dialect, tooling, and domain experience genuinely match your work. Head to the
Bids are short proposals that reveal how each SQL developer interprets the brief. Read them carefully. A strong proposal will reference your specific database engine, suggest a likely cause for performance issues you described, and outline a realistic plan rather than a generic pitch.
Final selection should combine proposal quality with profile evidence. For database work, look for consistency across multiple completed projects rather than a single impressive example. Pay close attention to written reviews that mention performance gains, on-time delivery, and clean documentation.
Simple work such as writing a set of stored procedures or tuning a handful of queries can be completed in a few days. Larger engagements like full schema redesigns, data migrations, or building a reporting back-end usually take several weeks. Timelines depend on data volume, the number of integrations, and how clean the existing database is.
A SQL developer focuses on writing and optimizing queries, stored procedures, and schemas that support applications and reporting. A database administrator focuses on the running database itself, including backups, replication, security, patching, and uptime. Many freelancers cover both, but for complex production environments you may want one of each.
Yes. Short, scoped engagements such as fixing a slow query, writing a specific stored procedure, or building a one-time data export are common on Freelancer.com. Provide the schema, sample data, and current execution plan in your brief so the freelancer can quote accurately.
Choose a SQL developer when the work centers on relational database design, query writing, and procedural logic inside engines like SQL Server, PostgreSQL, or Oracle. Choose a data engineer when the project requires building large-scale pipelines across distributed systems, streaming data, and tools like Spark or Kafka. Many freelancers carry both skill sets, so describe the workload clearly in your brief.
Generally no, at least not initially. Provide a sanitized copy, a staging environment, or an anonymized data sample so the freelancer can develop and test safely. Production access can be granted later under proper credentials and with version-controlled deployment scripts.

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