Hire the Best DBX Specialists

⏰ Available 24/7 – Long-term & High-impact Projects Hi, I’m Nghi, a Senior Data Engineer and Data Architect with a strong backend foundation, now focused on building high-performance analytics platforms, explainable data pipelines, and production-grade cloud architectures. I help companies transform unreliable, slow, or opaque data systems into scalable, well-documented, and business-trustworthy platforms. 🧠 WHAT I SPECIALIZE IN 🏗️ Data Architecture & Platform Design - Designing modern lakehouse & warehouse architectures - dbt-first analytics engineering with testing, freshness & lineage - Event-driven and batch hybrid pipelines - Data quality frameworks & SLA monitoring - Customer-facing data explainability systems Tools: dbt, Dagster, Airflow, Spark, Kafka, Snowflake, BigQuery, Redshift, PostgreSQL, DuckDB, ClickHouse ⚡ Database Performance Engineering - If your queries are slow, costs are high, or dashboards lag, This is my zone - Query plan analysis & index strategies - Warehouse cost optimization (Snowflake, BigQuery, Redshift) - OLTP & OLAP performance tuning - High-concurrency workload design 🔄 Reverse ETL & Operational Analytics - Syncing analytics back to CRMs & internal tools - Building real-time metrics pipelines - Feature-store style transformations 🕷️ Enterprise-grade Web Data Extraction - I don’t just scrape pages, I build durable data acquisition systems: - Complex ASP.NET, JS-heavy, authenticated & paginated systems - Anti-bot bypassing & failure-recovery pipelines - Headless browser automation + async scraping - Real-estate, finance, campaign-finance & marketplace platforms ☁️ Cloud Infrastructure - AWS | Azure | GCP - EMR / Dataproc / Glue / Dataflow / Synapse / BigQuery / Redshift - Terraform-based deployments - Cost-aware architectures - Kubernetes + Dockerized data services 🧪 What You Get Working With Me ✔️ Production-ready pipelines ✔️ Clean, testable dbt models ✔️ Well-documented architecture diagrams ✔️ Transparent data logic for non-technical stakeholders ✔️ Systems that scale beyond MVP ✔️ Honest advice and not over-engineering 🏆 Ideal Projects 👍 Data warehouse migrations 👍 Broken pipelines that need debugging & stabilization 👍 Analytics platforms that lack trust or explainability 👍 Performance bottlenecks costing thousands per month 👍 Long-term data platform ownership ❣️ Why Clients Stay Long-Term 🍀Clear communication 🍀 Business-first thinking 🍀 No black-box systems 🍀 I build systems others can maintain 🇻🇳🇻🇳🇻🇳🇻🇳 If your data platform feels fragile, slow, or impossible to explain to customers, I can fix that. Let’s make your data system something you can confidently stand behind.

Senior Database Administrator / Database Reliability Engineer with 18+ years of experience keeping production databases reliable, available, secure, and performant across AWS, GCP, Azure, and on-premises environments. My core expertise is database performance tuning, high availability, disaster recovery, database upgrades, backup & recovery, replication, cloud database administration, and database migrations. I work with PostgreSQL, Oracle, MySQL/MariaDB, SQL Server, MongoDB, and Snowflake, with extensive experience supporting production environments across cloud and on-premises platforms. What I can help you with: 🔹 Database Performance Tuning SQL and query performance troubleshooting Execution plan analysis Index optimization Partitioning and materialized views Database-level performance analysis Identifying and resolving production bottlenecks 🔹 High Availability & Disaster Recovery HA/DR architecture and implementation Physical and logical replication Backup and recovery strategies RPO/RTO planning and validation Disaster recovery testing Production database recovery and troubleshooting 🔹 Database Upgrades & Maintenance Database version upgrades Upgrade planning and compatibility analysis In-place and blue/green upgrade approaches Pre- and post-upgrade validation Production change management Minimizing downtime and operational risk 🔹 Cloud Database Administration AWS RDS and Amazon Aurora AWS EC2 database environments GCP database environments Cloud database monitoring and troubleshooting Cloud database maintenance and upgrades 🔹 Database Migrations Oracle → PostgreSQL On-premises → AWS Cross-platform and cross-database-engine migrations AWS SCT for schema/code conversion AWS DMS for data migration and replication Migration planning, validation, and cutover support 🔹 Backup, Recovery & Production Support Backup strategy and recovery procedures Database crash and failure recovery Production incident troubleshooting DR drills and recovery validation SLA-driven incident and change management I also have strong experience with Linux, Bash/Shell scripting, Terraform, Ansible, Git, Docker, and GitHub Actions, allowing me to automate repetitive DBA tasks and integrate database operations into modern infrastructure and deployment workflows. My approach is practical and production-focused: understand the problem, identify the root cause, implement a safe solution, validate the result, and document the process. Whether you need help with a slow database, a production incident, an HA/DR solution, a database upgrade, a cloud migration, or ongoing database administration, I can help you design and execute the solution.

DATA ENGINEER | BI EXPERT Are you looking to transform fragmented enterprise data into reliable, production-grade analytics pipelines? I am a Data Engineer with 8+ years of experience specializing in end-to-end ETL/ELT engineering, modern data lakehouse architectures, and scalable Business Intelligence (BI) systems. I bridge the gap between complex data architecture and business strategy, ensuring your stakeholders always have access to high-integrity, analytics-ready datasets. CORE EXPERTISE: 🔹 Data Pipelines & Orchestration: Designing and deploying resilient, scalable ETL/ELT pipelines using Python and dbt across Azure and AWS. Experience with migrating legacy workflows (SSIS, Pentaho Kettle) into modern cloud infrastructures. 🔹 Lakehouse Architecture: Implementing high-performance Delta Lake Medallion structures (Bronze, Silver, Gold) and dimensional modeling (Star and Snowflake schemas) optimized for query speed and minimal redundancy. 🔹 App & API Integrations: Ingesting and unifying data from disparate sources including Salesforce (deep data architecture expertise), HubSpot, Zendesk, Xero, Google Analytics, and AWS S3. 🔹 Modern Engineering Practices: Enforcing robust CI/CD version control via Git, automated data validation, and AI-assisted workflows to maximize pipeline uptime and accelerate script prototyping. 🔹 BI & Dashboarding: Creating actionable, executive-ready reports and dashboards to drive data-backed business decisions. 🔹 BI Platforms: Power BI, Tableau, Metabase, and Yellowfin BI. Whether you need a legacy system migration, a brand-new cloud data warehouse architecture, or optimized BI reporting, I deliver secure, secure-by-design, and production-grade solutions.

I have 12+ years of professional experience working in enterprise web applications. Fluent with Database programming. Currently, I am working as Principal Database Engineer in a USA based company providing solutions for trade and risk management. My responsibility covers: 1. Modeling complex business requirements in database 2. Database design 3. Writing stored procedures, jobs, functions, Reports 4. ETL operation using SSIS/CLR 5. Mentoring junior developers 6. Database documentation 7. Database Unit test (Tsqlt) Skill: 1. Microsoft SQL Server 2. MySQL 3. Oracle 3. PHP 4. JavaScript 5. Excel VBA