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SQL is one of the most important programming languages when it comes to managing data in general, and is indispensable to countless companies and corporations.
SQL is a programming language that can help you manage your data more efficiently. Find an SQL architect to help you do just that at Freelancer.com!
Publica tu proyecto gratis y conéctate con SQL Architects profesionales listos para comenzar hoy. Compara ofertas, calificaciones y portafolios y solo paga cuando estés satisfecho con el trabajo.
~30 seg
a la primera oferta
77+
ofertas por proyecto
536+
SQL Architects en línea
Sin pagos adelantados: paga únicamente cuando estés satisfecho con el trabajo entregado

9,1
9,1
99%

Salamina, Greece
$44 USD por hora
I’m a Microsoft Office Applications Developer who takes great pride in my work. Through meticulous attention to detail and a passion for my career, 💻 I develop, write, and customize top-quality 💎 code in VBA that enables me to create custom, high-performance applications for my clients, saving them significant money 💲 and time ⏱️ . I’m well-versed in several areas, including (but not limited to): ● Excel ● Access ● VBA (Visual Basic for Apps) ● Power BI ● Word ● Microsoft Office ● PowerPoint ● Outlook Microsoft is one of the most widely used software suites among professionals. If you’re using it and find yourself losing time through specific processes, my services will provide you with the efficiency and ease of use to reclaim that wasted time. If you’re interested, I work from 8 a.m. to 9 p.m. Athens time and will respond promptly to your requests and inquiries. I love bringing on new clients and can’t wait to show you how I can streamline your business today! Thanks, and have a great day!

10,0
10,0
97%

Surat, India
$15 USD por hora
⭐ Top 1% on Freelancer.com | Narola Infotech - Digitalising Businesses Since 2005 ✎ About Us We are Narola Infotech, a globally recognized IT solutions company with 20+ years of experience delivering high-performance web, mobile, and enterprise software solutions to 1500+ happy clients across 50+ countries. Trusted by Fortune companies like CGI, L&T, Infosys, Biocon, and TVSNext. We don't just build software, we build lasting partnerships. Our approach is simple: understand your vision, deliver beyond expectations, and stay with you every step of the way. ✎ Why Choose Us? ➬ 20+ Years of Industry Experience ➬ 350+ Talented IT Professionals ➬ 3000+ Successfully Delivered Projects ➬ 95% Client Retention Ratio ➬ 4.9 ⭐ Clutch Rating ➬ 100% Project Success Ratio ➬ Clutch Top 1000 Companies Global 2022 ➬ Best Outsourcing Company - SGCCI ✎ Our Services ➬ Custom Web & Mobile App Development ➬ Custom Enterprise Software Development ➬ AI/ML & Data Analytics Solutions ➬ QA & Software Testing (Automation, Security, Performance) ➬ DevOps, Cloud Migration & Managed Services ➬ Salesforce Consulting, Implementation & Support ➬ Staff Augmentation - Dedicated Teams or Individual Developers ➬ Support & Maintenance ✎ Tech Stack ➬ Frontend: ReactJS, AngularJS, VueJS, NextJS, NuxtJS ➬ Backend: Node.js, Java, PHP, Laravel, .NET, Python, Django, WordPress ➬ Mobile: Flutter, React Native, iOS (Swift), Android (Java/Kotlin) ➬ Cloud & DevOps: AWS, Azure, Docker, Kubernetes, Jenkins, CI/CD, Terraform ➬ Database: MySQL, MongoDB, PostgreSQL, Firebase, MS-SQL ➬ Other: Salesforce, MS Dynamics 365, Power Platform, Big Data, AI/ML, Automation ✎ Industries We Serve ● Fintech ● Healthcare ● Retail & Ecommerce ● Education ● Real Estate ● Media & Entertainment ●Transport & Logistics ✎ Our Strengths ➬ Agile Development Methodology ➬ Daily & Weekly Progress Reports ➬ Clear Communication & Collaboration ➬ 100% Plagiarism-Free & Secure Delivery ➬ Guaranteed Data Privacy & NDA Protection ➬ Flexible Engagement Models: ● Fixed Cost ● Time & Material (Hourly) ● Dedicated Team ● Hybrid Model (Fixed + Hourly) ✎ Our Promise "You will get the value of every penny you spend. We are committed to driving your business forward with reliable, quality solutions powered by technology and innovation." - Ashish Narola, CEO

9,4
9,4
99%

Ahmedabad, India
$30 USD por hora
Hello, I’m Sweta Patel, Coder at and Owner of Cloud Web Labs. At Cloud Web Labs, we offer quality services to our clients, regardless of size or budget, while completing them on affordable budgets and quick timelines. Our team of talented professionals are able to handle projects involving the following aspects: - Responsive multilingual websites with Wordpress, WIX, Squarespace, PSD/XD/Figma to Bootstrap/HTML/CSS/Wordpress - Custom theme and plugin development for wordpress - Online Shop : Woocommerce, WIX and SquareSpace - Payment gateways: Paypal, stripe, 2checkout, Skrill, Payfort, credit/debit card - PHP, AJAX, jQuery, JavaScript - API integrations – Showing live NFT addresses, live prices for metals eg. Gold, silver, Games Match list – Basketball, football - Google API integrations – MAPs, ReCaptcha, REST apis - Responsive Email Template and Signature creation with html/css and different mail engines :Mailchimp, Outlook, Gmail, Yahoo and Hotmail. We have a large tech stack that allows us to be flexible and creative with our solutions, offering you the kind of products that you won’t find with other freelancers or firms. We’re available Monday through Friday, and also Saturday (on reduced hours), and are happy to answer questions, share portfolio samples, or jump straight into planning the execution of your next project. If you want to chat, feel free to message us at any time! We’re happy to discuss your needs and our abilities, and will only pass on your project if we KNOW we can’t handle your project. Thanks, and have a great day!

10,0
10,0
98%

Puttalam, Sri Lanka
$20 USD por hora
If you are seeking a strategic technology partner who delivers modern, scalable, and intelligent digital solutions, you are in the right place. We are a forward-thinking team specializing in Software Engineering, Web & Mobile Development, AI Solutions, and Intelligent Automation. Our approach is focused on building future-ready systems that combine clean architecture, performance, and business impact. Our technical expertise spans PHP, Node.js, Angular, Flutter, React, React Native, C#, VB.NET, and leading platforms such as WordPress, WooCommerce, Magento, and PrestaShop, supported by enterprise-grade databases including MySQL, PostgreSQL, Oracle, and SQL Server. Beyond development, we help businesses scale through AI-driven innovation and automation, including: - AI chatbots, voice agents, and virtual assistants - Workflow and process automation using Make (Integromat), n8n, and custom solutions - AI-powered data processing, content generation, and decision support - CRM, marketing, and operations automation to reduce costs and increase efficiency We have strong expertise in API-based integrations and ecosystem automation, connecting platforms such as Amazon, eBay, Shopify, Walmart, Lazada, Wish, and logistics providers including USPS, UPS, FedEx, and DHL, enabling seamless commerce and fulfillment workflows. Our focus is not just on delivery, but on measurable outcomes, speed, reliability, scalability, and long-term value. We thrive on complex challenges and continuously adopt the latest AI and automation trends to keep our clients ahead of the curve. Review our portfolio below and let our work demonstrate the standard we uphold. We are committed to delivering solutions that are intelligent, efficient, and built for growth.

10,0
10,0
96%

Sylhet, Bangladesh
$35 USD por hora
My journey in digital services began in 2010 through content creation and online publishing. As client needs evolved, so did my vision: businesses didn’t just need content or a website—they needed a reliable digital partner who could build, refine, and grow their entire online presence. That vision led to the launch of SEOPage1 in 2013. Today, SEOPage1 is a full-service digital agency trusted by clients for delivering high-quality, results-focused solutions across web design and development, website support, SEO, paid marketing, branding, UI/UX, content, and AI automation. We specialize in building and improving websites on WordPress, WooCommerce, Shopify, Wix, and Squarespace, handling everything from new builds and redesigns to bug fixing, speed optimization, malware cleanup, migrations, server setup, AWS, and ongoing maintenance. We also full-fledgedly work with modern frameworks and raw-coded solutions where they align with the client’s goals. We have built ERP, HRM, CRM systems and other complex systems using different full-stack frameworks. Beyond development, we help businesses grow through SEO, Google Ads, Facebook/Instagram Ads, LinkedIn Ads, TikTok Ads, social media management, content writing, and direct lead generation. We also provide technical setup and troubleshooting for the platforms that power digital growth, including Google Merchant Center, Google Ads, GA4, Google Tag Manager, Search Console, Google Business Profile, Meta Business Manager, Pixel/CAPI, TikTok Ads Manager, and Bing/Microsoft tools. Our creative services include UI/UX design, logo design, banners, brochures, and brand guidelines, ensuring every brand touchpoint is professional, consistent, and conversion-focused. We have also expanded into AI and automation, helping businesses streamline operations with chatbots, CRM-connected workflows, payment-enabled automation, platform-specific AI systems, and full cross-platform business automation, along with ongoing monitoring and maintenance. What sets us apart is not just the breadth of our services, but the discipline behind our delivery. We have built an in-house team of 60+ professionals across development, design, marketing, content, QA, and automation. Our workflow is supported by structured quality control, internal systems, and a research-driven approach that allows us to deliver dependable work at scale. At SEOPage1, we don’t believe in one-size-fits-all solutions. We take the time to understand each business, identify what will create the most value, and execute with precision. Whether the goal is to launch a new website, fix a critical issue, improve visibility, generate leads, or automate operations, we focus on solutions that are practical, polished, and built for long-term growth. We don’t just complete projects — we help businesses build stronger digital foundations.

9,5
9,5
99%

Kolkata, India
$20 USD por hora
Fourtunedesign is a web & graphic design company. Top Rated by Preferred Freelancer Team.We are specialized in various platforms and working on different fields such as: - Logo Design - UI/UX Design - FIGMA - Website Design & Development - Print Media. - Branding - Illustration - Icon Design - Poster Design - Digital Painting - Banner Design - Leaflets - Letterheads - Flyer Design - Business Cards - Brochure Design - T-shirt Design Our specialization is customized logo and web designing so we provide 100% original work.. I can deliver quality notes to tight deadlines.We believe in 100% customer satisfactory work, so our designing packages have flexible pricing and unlimited revision until your satisfaction.

9,4
9,4
98%

Karachi, Pakistan
$20 USD por hora
At Digital Arcanum, we don’t just deliver services — we build complete digital growth systems. With over a decade of experience, we’ve worked with global brands and multi-million to multi-billion dollar companies, helping them scale through strategy, technology, and performance marketing. Every project is personal. We go beyond templates and generic execution to create high-performance digital ecosystems that drive traffic, engagement, and conversions. Strategy First — The Real Game Changer We don’t believe in random posting or design. Every action is backed by data, intent, and business goals. From first impression to final conversion, everything is connected. If your brand is posting but not growing or your website isn’t converting — you don’t need more content, you need the right system. 👉👉Social Media & Performance Marketing We are social media growth specialists, not just managers. We build and scale brands across: Instagram, Facebook, TikTok, and YouTube Our services include: Social media strategy & content systems High-quality design (Adobe Photoshop & Illustrator) Reels & video editing (Adobe Premiere) AI-powered content (ChatGPT, Claude) Copywriting & engagement optimization Meta Ads & Google Ads (conversion-focused) Retargeting & scaling strategies Goal: Turn attention into revenue 👉👉Website Development & Automation We build fast, scalable, SEO-optimized platforms: 👉WordPress, Shopify, Webflow, Wix, Squarespace 👉GoHighLevel (GHL) funnels, landing pages, CRM 👉Full-stack solutions & API integrations 👉Automation using n8n & CRM workflows 👉SEO & Branding We drive long-term growth through: Keyword research & technical SEO Content strategy & optimization eCommerce SEO We also create premium brand identities: 👉Logo design & corporate identity 👉Marketing collaterals, packaging, pitch decks 👉UI/UX for websites & mobile apps Why Digital Arcanum 👉1000+ successful projects 👉Experience with global brands 👉Strategy-first approach 👉Strong focus on ROI 👉Built-in quality checks 👉24/7 operations Final Thought Most agencies deliver services. We build systems that scale businesses. Digital Arcanum — Where Strategy Meets Growth

8,2
8,2
99%

Baguio City, Philippines
$30 USD por hora
We're a community driven by a passion for computing technology. Our group consists of fellow enthusiasts, architects, engineers, hackers, and analysts, all for advancing information technology and computer science. Our goal is to contribute to knowledge through research, experiments, and practical experiences. We leverage this knowledge to develop innovative solutions for the digital world. We are expanding our services to reach more people. For more information and inquiries, send us a message, and let's discuss it over a cup of coffee.

8,5
8,5
99%

Perundurai, India
$15 USD por hora
I have 10 years experience in designing websites, standalone applications. I use PHP, Javascript, jQuery, HTML, CSS, C#, Wordpress. I will be available online from 2 am GMT to 5 pm GMT. I will provide 7 days free support that related to my work done and service guaranteed on my work.
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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