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.

✅ I am a Top Rated Plus Database Consultant on Upwork with over 100 5-star client reviews, backed by 13+ years of enterprise experience and a 100% commitment to your success. Instead of just keeping the lights on, I solve complex customer-facing database bottlenecks, architect zero-downtime migrations, and make massive performance improvements for mission-critical systems. My career spans managing over 8,000 production databases and 500TB+ of data for fast-growing SaaS platforms, FinTech companies, and global enterprise organizations. ⭐ Here's what I can bring to your project (Validated by vendors and trusted by hundreds of clients): ✅ Deep Multi-Engine Expertise: Mastery across PostgreSQL, MySQL, SQL Server, MongoDB, and Oracle. ✅ Cloud Database & RDS Architecture: Extensive hands-on experience migrating, scaling, and optimizing managed database workloads across AWS (RDS/Aurora), Google Cloud (Cloud SQL), and Azure databases. ✅ AI & Vector Database Architecture: Expert in designing scalable schemas for massive AI workloads and tuning vector extensions (e.g., pgvector with HNSW & IVF indexing) for millisecond-latency cosine similarity searches. ✅ Extreme Performance Tuning: Rapidly diagnosing CPU spikes, slow queries, and index inefficiencies to restore lightning-fast performance. ✅ High Availability & DR: Architecting bulletproof clusters (Always On, InnoDB Cluster, Patroni, HADR) to guarantee zero data loss. ✅ Vendor-Certified & Client-Proven: My technical methodologies are not just theoretical—they are backed by premium official certifications from AWS, Oracle, Cisco, PMP, TOGAF, and ITIL, and have successfully empowered hundreds of businesses globally. ✅ Enterprise Security & Compliance: Strict adherence to data security best practices when handling sensitive financial and operational data. ✅ 24/7 Ultra-Reliable Communication: You will never be left in the dark; you will always know the exact status of your production systems. ⭐ Why you should choose me over other freelancers: ✅ Broad Vision, Deep Focus: Unlike single-engine DBAs, my multi-platform expertise allows me to choose the absolute best architectural solutions for your specific business needs. ✅ Over-Delivering: This is core to my work ethic. I don't just close tickets; I identify root causes and optimize your infrastructure so the problem never happens again. ✅ Earning Your Trust: My primary goal is not just completing a contract, but becoming the reliable technical partner your business can always count on. Let's discuss how we can secure, optimize, and scale your data infrastructure. Send me an invite, and let's get to work!

Platform & DevOps Architect | Kubernetes, GitOps, HA Databases, Cloud Exeprt knowledge and experience: * Kubernetes, Helm; Docker * Terraform * GitOps (ArgoCD, fluxCD) * Cloud solutions (AWS/Azure/GCP) * PostgreSQL ( + Patroni for HA); MySQL/MariaDB (InnoDB cluster/Galera cluster) * Active Directory and Windows infrastructure * Disaster Recovery and High Availability * Production troubleshooting and performance optimization With 20+ years of infrastructure experience, I work on infrastructure design, implementation and maintenance. My areas of expertise: Linux / Platform Engineering: • Production Kubernetes platforms using GitOps (FluxCD, ArgoCD), Helm, and Docker • Web and application stacks: nginx, Apache, PHP, MySQL/MariaDB * DBA: Postresql Patroni, MySQL InnoDB Cluster, Galera Cluster • CI/CD pipelines with GitHub Actions, GitLab CI, Bitbucket Pipelines, and Azure DevOps • Monitoring and observability using Grafana + Prometheus, Zabbix, ELK (+ APM) • Automation and scripting with Bash and Python • Virtualization platforms: VMware, Hyper-V, Xen AWS, GCP, Azure - 10+ years of experience with clouds • Perfect knowledge of SaaS services: EC2, ECR/ECS, VPC, Lambda etc. • Strong architect skills. • aws-cli, cloud, az skills. Windows Infrastructure (20+ years): • Expert in Windows Server 2003–2022, Active Directory, Group Policy, Exchange 2013–2019, and Exchange Online. • Failover Clustering, Network Load Balancing (NLB), MS SQL Server Clusters and AGs.

🏆 Top-Rated Database Architect & Multi-Cloud Specialist with 16+ Years of Experience Delivered 50+ enterprise-scale database and cloud transformation projects across telecom, government, banking, retail, and transport industries, specializing in migrations, HA/DR architectures, and performance tuning for Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis and Apache Cassandra. I am a seasoned Database Architect and Cloud Specialist with over 16 years of experience, delivering high-impact solutions across telecom, government, banking, transport, and retail industries. My expertise spans multi-database ecosystems (Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis) with a strong focus on performance tuning, HA/DR architectures, and enterprise-scale migrations. Beyond databases, I bring deep experience in multi-cloud environments (OCI, AWS, Azure, GCP) and DevOps practices, leveraging Kubernetes, Docker, Ansible, Jenkins, and CI/CD pipelines to design and automate resilient, scalable infrastructures. Over the years, I have led critical modernization projects including Oracle RAC/Data Guard, PostgreSQL Patroni clusters, MySQL InnoDB clusters, SQL Server Always-On, and GoldenGate microservices replication, all aligned with compliance, cost optimization, and business continuity. I specialize in cloud-native architectures, database modernization, and containerized deployments, ensuring secure, high-performing, and future-ready platforms for enterprises across multiple sectors. 🔹 Database Expertise High Availability & DR: Oracle RAC/Data Guard/GoldenGate, PostgreSQL Patroni/repmgr/EFM, MySQL Group Replication/ClusterSet, SQL Server Always-On, MongoDB ReplicaSets & Sharding, Redis Sentinel & Cluster. Performance Tuning: Advanced SQL optimization, query indexing, connection pooling, and OS-level tuning (CPU, memory, I/O, networking). Clickhouse DB optimization and performance tuning. Migrations: End-to-end cross-platform migrations (SQL Server → Postgres/Oracle, MySQL → Snowflake/OCI/Azure, on-prem → multi-cloud). I have hands-on experience designing and implementing Oracle Fusion API integrations using Oracle Integration Cloud (OIC), connecting Fusion Cloud with multiple external systems. My work includes building and optimizing REST and SOAP-based services, handling complex data mappings, and improving integration performance and reliability. I’ve also maintained existing integrations to ensure high availability and seamless data flow while collaborating closely with cross-functional teams to identify needs, streamline workflows, and deliver well-documented, reusable integration solutions. Automation: Backup/recovery orchestration, PITR, monitoring, and administration via shell scripts, Ansible, Jenkins, and IaC. 🔹 Cloud Architecture Certified in OCI, AWS, Azure, GCP, and Alibaba Cloud, with deep experience in hybrid & multi-cloud setups. Skilled in OCI Exadata Cloud@Customer, AWS RDS/Aurora, Azure SQL Database, Databricks, and multi-region failover. Migrated enterprise systems (DB + middleware) to cloud with zero-downtime cutovers and automated DR. 🔹 DevOps & Modern Platforms Proficient with Docker, Kubernetes, and OpenShift for containerized DB + application deployments. Extensive experience in building, optimizing, and maintaining Oracle Integration Cloud (OIC) processes, adapters, and orchestration for enterprise-scale clients. VBCS (Visual Builder Cloud Service): Skilled in designing and developing responsive, low-code applications integrated with Oracle SaaS and PaaS ecosystems. Strong background in CI/CD (Jenkins, GitLab, Ansible, Terraform). Experience securing secrets with Vault, integrating monitoring stacks (Prometheus, Grafana, ELK). 🔹 Odoo & Application Layer Odoo deployment, backend DB optimization, and module customization. Report building & tailoring business workflows for performance and usability. Tomcat, Apache, IBM WebSphere, Oracle WebLogic, and Bitnami stack administration. 🔹 Data & AI Solutions Data Engineering & Warehousing: Azure Data Factory, Databricks, Oracle OBIEE, Snowflake. AI Agent Development: Built agents for self-healing DBs, N8N automation, and natural language querying. Supabase Consultation: Connect Supabase with AI agents to simplify backend management for non-developers. Automate project provisioning, query execution, function creation, and API management. Enable natural language interaction with data, making database operations accessible to entire teams. ✅ Key Certifications: Oracle 19c OCP DBA | PostgreSQL Advanced v11 | MySQL 8.0 OCP | MongoDB Associate DBA | Redis Certified Developer | Microsoft Azure Administrator | OCI 2025 Certified Multicloud Architect | OCI GenAI | Oracle GoldenGate Implementation Specialist | WebLogic 12c OCP | YugabyteDB DBA

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!

I fix slow or unstable systems — especially the ones others couldn’t — and make them scale properly. I’m Jan — a Fractional CTO with 25+ years of experience turning ideas into production-ready systems. I don’t just advise — I fix and build. I work with startups and growing companies where things are starting to break — or never worked quite right in the first place. Usually when something has already gone wrong — or needs to scale fast. ⚙️What I help with: - Acting as a Fractional CTO when senior direction is missing - Translating business needs into practical technical solutions - Designing scalable architecture and APIs - Fixing performance and stability issues - Optimizing Linux servers and infrastructure - Refactoring legacy PHP into clean, maintainable code 📍Typical situations I come into: - “Business and tech are not on the same page” - “Things get lost between requirements and implementation” - “We’re not sure what the real problem is” - “It works, but it’s slow or unstable” - “We’re scaling and things are breaking” - “The codebase is a mess and nobody wants to touch it” 🧠How I work? Simple solutions. Real performance. No overengineering. I go from architecture down to code, database, OS, and network — whatever it takes to make it work properly. 📩Most of my work is long-term and under NDA, but I’m happy to take a quick look and tell you honestly what’s going on — and how to fix it. 👉 If you’re not sure what’s wrong, I can usually identify it in one call.

Are you looking to build high-performance data pipelines, automate workflows with AI, and track web analytics to maximize your ROI? You are in the right place. Hi, I am Faisal Ashraf, a certified Analytics & Data Engineer. I bridge the gap between raw data, cloud infrastructure, and business intelligence. Using the Modern Data Stack (Snowflake, dbt, Python, SQL, and Power BI), I build secure data pipelines, automate manual processes with AI, and deliver dashboards that drive revenue. Modern businesses cannot afford to rely on guesswork. Whether you need to clean messy data, migrate to Snowflake, build dbt models, or deeply analyze web traffic, I provide end-to-end data solutions that cut costs and save hours of manual work. --- 🛠️ Core Expertise & How I Can Help Your Business: 1. Cloud Data Engineering & Modeling (Snowflake & dbt) * Designing scalable, secure cloud data warehouses in Snowflake. * Building modular, tested, and documented data transformation pipelines using dbt (Data Build Tool). * Ingesting structured and semi-structured data (JSON, Parquet) with clean ETL/ELT processes. * Managing virtual warehouse compute resources to minimize Snowflake costs. 2. Data Automation & Analytics (Python, SQL & Power BI) * Writing advanced, optimized SQL queries for complex data extraction and analysis. * Developing Python scripts for data cleaning, API integrations, and workflow automation. * Creating interactive, automated Power BI dashboards with DAX to track business KPIs. 3. AI Workflow Integration (Google AI Certified) * Deploying Generative AI tools and custom prompt engineering to optimize operations. * Integrating smart AI models into existing business systems to eliminate bottlenecks. 4. Traffic & Web Analytics (Google Analytics Certified) * Setting up advanced Google Analytics (GA4) reporting and exploration dashboards. * Tracking user behavior, traffic acquisition channels, and conversion funnels. --- 🧰 Technical Toolkit: * Data Warehousing: Snowflake * Transformation & Orchestration: dbt (Data Build Tool) * Programming & Query Languages: Python, SQL * Business Intelligence: Power BI, Looker Studio * AI & Analytics: Google AI Tools, Google Analytics (GA4) --- 🎓 Verified Certifications: * Snowflake Data Engineering Professional Certificate * Google AI Professional Certificate * Google Analytics: Reports & Traffic Analysis (via Coursera) --- 🤝 Why Hire Me? * Industry-Vetted Standards: My skills are directly verified by Google and Snowflake, ensuring world-class best practices and data security. * Business-First Approach: I don’t just write queries; I focus on how my data models and dashboards will directly increase your business efficiency. * Clear Communication: I provide regular, jargon-free updates so you always know the exact progress of your project. --- 📈 My Working Process: 1. Discovery: A quick chat to understand your data architecture, business goals, and bottlenecks. 2. Strategy & Roadmap: Designing a tailored data/AI plan customized to your budget. 3. Execution & Testing: Writing clean code, building dbt models, and setting up error-free pipelines. 4. Handover: Providing complete documentation or video walkthroughs so your team can easily manage the system. Ready to unlock the true potential of your business data? Click the "Message" or "Invite to Job" button on the top right. Let’s schedule a quick 10-minute discovery call to discuss your project!

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.

With more than a decade of hands-on experience in Linux server administration, I bring deep expertise in managing, optimizing, and troubleshooting complex Linux infrastructures. I have provided enterprise-grade web hosting and server support for major platforms including Hostinger, GoDaddy, Bluehost, OVH, DigitalOcean, Hetzner, and IONOS, supporting large-scale shared, VPS, and dedicated environments. My skill set includes comprehensive WordPress management and migrations, covering site deployments, performance optimization, security remediation, malware cleanup, and zero-downtime migrations. I also specialize in architecting and maintaining robust web stacks using Apache, Nginx, BIND DNS, PHP (5.x–8.x), and MySQL/MariaDB, with a strong focus on reliability, performance, and security. I have a proven track record of handling critical tasks such as server security hardening, kernel upgrades, and server performance optimization. Additionally, I am proficient in administering and monitoring Linux servers remotely using advanced tools and technologies. Key Specialties: Linux System Administration (CentOS, AlmaLinux, RHEL, Debian, Ubuntu, CloudLinux) Large-scale server migrations, including WordPress and Joomla migrations Server upgrades, including CentOS 7 to AlmaLinux 8/9/10 transitions Expertise in web hosting panels (cPanel, Plesk, DirectAdmin, Virtualmin) and cloud solutions (AWS EC2, Lightsail, DigitalOcean, Linode, Vultr, Google Cloud) Expertise in DNS integration for Shopify, Wix, Cloudflare, Google WorkSpace, Microsoft 365 DNS administration, including advanced configurations for SPF, DMARC, and DKIM PCI compliance management, server disaster recovery, and data restoration Website security, including hack cleanups and proactive hardening Tools and Technologies: LAMP stacks, DNS, and mail servers (Exim/Postfix) Backup solutions (R1Soft, rsync-based scripting) Server monitoring (Nagios) and optimization tools Security-focused tools like CSF and LFD If you're looking for a dedicated and detail-oriented Linux server administrator who can ensure your systems run smoothly and securely, let's collaborate to meet your technical goals.

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.