An experienced MySQL database engineer with a skillset that expands to Django, Python scripting, Ansible, Linux Administration and various web technologies. I have been a Remote DBA, Support Engineer and Consultant for Percona and Pythian database consultancies, which has enabled me to gain a broad view of huge MySQL installations. You will be able to discover various blog posts I have had published on their respective platforms. I am an established speaker at the global MySQL events on topics including High Availability, Backups and Disaster Recovery, Security and Automation.

Main expertise: - Linux administration. - Bash scripting. - Web server administration (Apache, Nginx). - Database programming and administration (MySQL, MariaDB, Sqlite, MS SQL, MongoDB, PostgreSql). - Active directory administration (OpenLDAP). - Blockchain administration. - Source version control (Git/GitHub/GitLab/Bitbucket/Bazaar/Launchpad). - Building backend applications using PHP, NodeJS. - CMS installation and configuration - Wordpress, Joomla, Magento, OpenCart, etc. - Shopping cart payment gateway integration. - Website speed optimisation. - SSL certificate installation.

I am Sr Database Developer (MySQL/MariaDB) and Sr Full-Stack Developer. My areas of expertise are database-driven application development, database performance optimization, and data processing projects. Examples of projects I worked on: database server configuration/optimization, high-availability database solutions, performance optimization/caching projects, data extraction/mining projects, data migration/import/export projects, multi-threaded data processing projects, web page(s) loading analysis etc. I rate myself as a highly skilled professional. It does not mean I code 2-3 times faster. It means I do things right on first try.

Are your SQL queries running too slowly? Need help with ETL, reporting, or database migration? Looking for a reliable database expert who can solve problems efficiently and deliver clean, accurate results? I help businesses improve database performance, optimize SQL queries, build ETL workflows, and manage safe, accurate data migrations across SQL Server, Oracle, MySQL, and PostgreSQL. I can help with: • SQL query optimization and performance tuning • Stored procedures, functions, triggers, and packages • ETL development and data import/export processes • SQL Server, Oracle, MySQL, and PostgreSQL development • Data migration, validation, and transformation • SSIS, SSRS, and SSMS • Oracle Forms, Oracle Reports, BI Publisher, and Pro*C • Database troubleshooting, cleanup, and optimization I focus on practical solutions that improve speed, accuracy, and reliability. My goal is not just to write SQL, but to solve the business problem behind it. Why work with me? • Strong expertise across multiple database platforms • Oracle Certified Professional (Developer Track) • Master’s degree in Computer Science • Detail-oriented and quality-focused • Clear communication and dependable delivery I can support one-time fixes, ongoing database work, ETL projects, reporting solutions, and migration tasks. Let’s discuss your requirements and find the right solution for your project.

I bring 17 years of hands-on experience and expertise in managing, optimizing, and automating complex IT infrastructures. My professional journey has spanned diverse technologies, from database administration to DevOps, monitoring tools, and scripting, ensuring that I deliver reliable and efficient solutions tailored to client needs. Key Expertise Areas: 1. Database Administration: • MySQL, MariaDB, and Percona Server for MySQL • Galera Cluster for high availability • Advanced backup and recovery solutions with Xtrabackup • Query optimization, performance tuning, and Orchestrator for MySQL replication management 2. Load Balancing and Proxy Management: • Expertise in ProxySQL and HAProxy for scalable and high-performing systems 3. Containerization & Orchestration: • Proficient in Docker and Kubernetes for deploying and managing applications in scalable, containerized environments 4. System Administration: • Linux and Windows system administration • Automation using tools like CHEF and Ansible for configuration management 5. Monitoring & Alerting Tools: • Skilled in setting up and maintaining Zabbix, Grafana, Icinga, Nagios, Prometheus, and Loki for real-time system monitoring 6. Scripting & Automation: • Bash and Python scripting for task automation, monitoring enhancements, and custom solutions Why Work with Me? • Proven Track Record: Over 17 years of successfully solving complex challenges and delivering impactful results • Versatility: In-depth knowledge across diverse technologies and platforms • Client-Focused: Tailored solutions to meet unique business requirements, with a strong emphasis on reliability and performance If you’re looking for a dependable expert to optimize your databases, manage your systems, or implement scalable DevOps solutions, I’m here to help. Let’s discuss how I can bring value to your project!

𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 5+ Years of Experience in 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗣𝗛𝗣, 𝗠𝘆𝗦𝗤𝗟 & Scalable Web Applications ⚒ Quality and client satisfaction is my top priority. I will commit 100% to give you a perfect job. I’m Saurabh Kothari, a 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with over 5 years of experience delivering high-quality, performance-driven web applications. My work spans both frontend and backend, with a core focus on PHP frameworks like Laravel and CodeIgniter, robust MySQL architecture, and seamless API integrations. 𝗪𝗶𝘁𝗵 6700+ 𝗵𝗼𝘂𝗿𝘀 𝗹𝗼𝗴𝗴𝗲𝗱, 35 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀, 𝗮𝗻𝗱 $100𝗞+ 𝗲𝗮𝗿𝗻𝗲𝗱 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝗮𝗹𝗹 𝗯𝗮𝗰𝗸𝗲𝗱 𝗯𝘆 𝗮 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗰𝗼𝗿𝗲 I bring a proven record of building secure, scalable, and user-focused web solutions across industries including 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲, 𝗳𝗶𝗻𝗮𝗻𝗰𝗲, 𝗮𝗻𝗱 𝗲-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲. 💼 My Core Skills & Services Include: *Full-Stack Development with 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗣𝗛𝗣, 𝗮𝗻𝗱 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 *Backend Engineering: 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗖𝗼𝗱𝗲𝗜𝗴𝗻𝗶𝘁𝗲𝗿, 𝗣𝗛𝗣, 𝗠𝘆𝗦𝗤𝗟 *𝗥𝗘𝗦𝗧𝗳𝘂𝗹 𝗔𝗣𝗜𝘀 & 𝗧𝗵𝗶𝗿𝗱-𝗣𝗮𝗿𝘁𝘆 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 (Stripe, PayPal, etc.) *𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 with clean, responsive, and maintainable code *Web App Performance, 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 *Cross-Domain Experience: Healthcare, Finance, and E-commerce Why Should You Work With Me? *✅ 100% Client Satisfaction & Consistent 5-Star Feedback *🧠 Deep Backend Expertise with Strong Full-Stack Capabilities *🧼 Clean, Modular, and Maintainable Code Practices *⚡ Quick Turnaround, High Responsiveness & Professionalism *🤝 Long-Term Client Relationships & Reliable Communication *🛠 Post-Deployment Support and Continuous Improvements Let’s build something great together. Message me today to discuss how I can bring your vision to life lessnd clicking one of the buttons above. The eraser button will convert your selection back to normal text.

I am a US-based Senior PHP & WordPress Developer with 14+ years of experience building, optimizing, and troubleshooting high-performance web applications, SaaS platforms, and e-commerce systems. Since 2011, I’ve helped startups, agencies, and established businesses launch, maintain, and scale their websites—with hundreds of successful projects completed across PHP, Laravel, CodeIgniter, WordPress, WooCommerce, and custom backend systems. I specialize in solving difficult technical problems and improving the stability and performance of existing platforms, including: ✔ Backend Development (PHP / Laravel / CodeIgniter / Drupal) 🔹 API development & integrations 🔹 Authentication, OTP, admin panels 🔹 Cron jobs, queues, logic debugging 🔹 Building secure, scalable backend systems 🔹 Custom PHP development & legacy code modernization 🔹 Payment gateway and third-party API work ✔ WordPress & WooCommerce Expertise 🔹 Custom plugins & theme development 🔹 WooCommerce customization & API integrations 🔹 Database optimization, speed tuning, caching 🔹 Troubleshooting complex site issues 🔹 Migrations, fixes, redesigns, and enhancements ✔ Full-Stack Web Development 🔹 PHP, JavaScript, jQuery, Ajax, JSON, JQuery, ReactJS, VueJS 🔹 Bootstrap, Tailwind, HTML5/CSS 🔹 SaaS development 🔹 Dashboard and UI/UX improvements ✔ Server & Infrastructure Troubleshooting 🔹 VPS / cPanel / Cloudflare / AWS Lightsail / Azure 🔹 Fixing crashes, downtime, SSL, DNS, redirects 🔹 Email deliverability, PHP mailer fixes, MySQL errors ✔ Database & Performance Optimization 🔹 MySQL indexing, query optimization 🔹 High-traffic site improvements 🔹 Fixing slow sites, 500 errors, memory issues ✔ Payment Gateways Integration 🔹 Stripe, PayPal, Braintree, Square, Authorize.net, Klarna ✔ Integrations, APIs & Data Feeds 🔹 REST API development & third-party API integrations 🔹 IDX / MLS real estate data feed integration & customization 🔹 Twilio (SMS, Voice, OTP), Sinch 🔹 Mailgun (Transactional Email) 🔹 Webhooks, automation workflows, custom API endpoints ✔ DevOps & Version Control 🔹 Git, GitHub, Bitbucket, GitLab, JIRA 🔹 Docker for containerized development

Slow databases? Production outages? Performance bottlenecks affecting your business? I help organizations identify root causes, optimize database performance, and build reliable database platforms. I am a senior database administrator (DBA) with over 13 years of hands-on experience managing production database systems. I specialize in MySQL, MariaDB, PostgreSQL, SQL Server, MongoDB adn Oracle, providing database troubleshooting, incident response, daily operations and maintenance, performance optimization, and reliable backup, high availability, and disaster recovery solutions for mission-critical environments. 🔍 Database Expertise: With over 13 years as a senior expert in MySQL/MariaDB/Percona/PostgreSQL/MongoDB/Oracle/SQL Server/DuckDB, I’ve managed over 5000 databases and 300 TB+ of data. My experience covers database architecture, performance optimization, backup and recovery, High availability, disaster recovery, and much more. I ensure every database solution I deliver is robust, scalable, high performance, and perfectly aligned with your business needs. 🛠️ Technology Stack: MySQL/Percona (Versions 5-9) MariaDB (Versions 5-12): Installation、High Availability, Replication, and Scalability Solutions、InnoDB Cluster、Group Replication、Workbench/Shell/Router、Backup & Restore、Galera Cluster、Percona XtraDB Cluster、XtraBackup、Toolkit、InnoDB/MyISAM/Binlog、Orchestrator、replication-manager. PostgreSQL (Versions 7-18): Installation、High Availability, Replication, and Scalability Solutions、SQL Tuning、pgpool-II、PostGIS、TimescaleDB、ClickHouse、Patroni、Citus、pgvector、Security、Supabase、Neon. MongoDB (Versions 3-8) / MongoDB Atlas : Installation、MongoDB Shell (mongosh)、Aggregation、Indexes、Atlas、Time Series、Change Streams、Replication、Sharding、Storage、Administration、Security. SQL Server (Versions 6.5 – 2025): Installation、High Availability and Disaster Recovery (Always On AG, FCI, Log Shipping, Replication)、Distributed Availability Groups、SQL Server Management Studio / Azure Data Studio / sqlcmd、Backup & Restore、Failover Cluster / Always On Solutions、PowerShell dbatools / First Responder Kit、Storage Engine / Transaction Log / Change Data Capture. Other Database : Oracle、DB2、Redis、SQLite、DuckDB、DocumentDB Cloud service providers: AWS RDS、AWS Aurora、Amazon DocumentDB、GCP、Azure、N8N creator. Certifications: I hold certifications from Cisco, Oracle, MySQL, AWS, ITIL, PMP, and TOGAF, ensuring I bring industry-recognized expertise to every project. 📈 Why Choose Me? Proven Experience: Worked for leading ICT and IoT solution providers, supporting major operators, banking, and financial enterprises. End-to-End Solutions: From designing high availability architectures to delivering query optimizations and backup solutions, I offer complete database management expertise. Training & Support: I also provide course training for companies looking to empower their teams with database-related skills. 🤝 Let’s Collaborate: If you’re looking for a seasoned database professional to tackle challenges in MySQL, PostgreSQL, MongoDB, Oracle, or other database technologies, let’s discuss how I can help streamline your operations and enhance performance. 📩 Contact Me: I’m ready to dive into your project. Reach out, and let’s unlock the full potential of your data infrastructure together!

🏆 Top Rated Plus (Top 3%) Upworker - 12+ Years Experience I help businesses simplify operations, save time, and increase efficiency by building custom web applications, ERPs, CRMs, MIS, and dashboards. What I offer: ✅ Custom ERP & CRM systems with multi-user, multi-location dashboards ✅ Management Information Systems for 100+ to 500+ employees ✅ Telemedicine, Clinic, Hospital & POS platforms ✅ Complex reports, analytics & workflow automation ✅ Scalable, secure, responsive, and user-friendly solutions Why clients hire me: 12+ years in Full-Stack PHP development (Core PHP, Laravel), Expert in Database Design & Optimization, REST APIs, Frontend & Backend architecture 100% Job Success, 5-star ratings, $100k+ earned, 50+ projects delivered End-to-end delivery: Design -> Development -> Deployment → Maintenance Industries served: Education, Healthcare, Retail, Real Estate, SaaS Let’s discuss your project - I deliver high-quality solutions that exceed expectations.

12 Years of total IT experience and work with 27 Customer End including 20 Gov. and Private Bank in Bangladesh, 6 other corporate clients. Vast exposure to IT Infrastructure Management space. Domain expertise on Oracle Database, Security, Solaris (UNIX), SPARC and x86 System. Successfully managed multiple projects involving Implementation and Production Support (Oracle Exadata, Oracle RAC, Oracle Data Guard, Linux Cluster, Solaris Cluster, Oracle Database Appliance, Oracle Advance Security, Audit Vault, Thales nShiled, Thales Payshield, Oracle SUN SPARC and x86 System etc.). Having extensive subject matter expertise in IT Operation Management, Strategic Technology & Developing Cost Effective Solutions to meet customer / business requirements.