Hire the Best IBM DB2 Programming Specialists

Data Integration specialist with over 19 years of experience in designing, building, maintaining and supporting Data warehouse and ETL applications. Extensive experience working on Snowflake, dbt, Datastage , Informatica, AWS, Unix/ Python Scripting. Experienced with relational databases - Snowflake, Netezza, DB2, Oracle and SQL server. Proficient in writing SQL queries to perform analysis and ELT loads into tables. Experience working on Bigdata tools – HDFS, Hive, Sqoop & Kafka. Exposure to Cloud technologies – ASW and Azure as data sources. Experienced working with diverse clients belonging to - Banking, Manufacturing, Restaurant and Retail domain. Good understanding of end-end architecture of Datawarehouse and applications worked on. Experienced in working on Agile (Scrum) & waterfall methodologies of project execution. Highly motivated, strong analytical skills, quick learner and interested to learn and work on new technologies.

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, MongoDB, and SQL Server, 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/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!

Oracle : - Having rich experience in Oracle Database Installation, upgrades. - install and setup high availability e.g. RAC , DG , GG - Rich experience in migration from one platform to another .\ - Rich experience in migration from on-prem to AWS/Oracle cloud . - Experience in AWS DMS - Setup the backup and recovery standards. - DB and query tunning. - troubleshoot performance issues - Automation using shell/batch/python scripting - debugging users issues . - Automate repetitive task using python/shell/batch script. - Having fair hands on automation using Ansible for Oracle DBA repetitive task. Migration: =========== - Oracle EE/SE to postgres AWS RDS using AWS SCT & DMS services - Oracle EE/SE to Oracle Cloud using datapump. - Oracle EE/SE to MariaDB using Goldengate. - Migration from one platform to another platform - Migration from oracle to databriks Automation: good in shell scripting , batch , python and ansible. recently completed oracle grid and rdbms installation automation using Ansible . Good experience in upgrades and performance tunning. Experience DBA devops and automation expertise. Postgres : ======= - Installation, upgrade minor and major - AWS Auroa RDA - postgres - troubleshooting - performance analysis Replication: Using golden gate Shareplex Debezium log miner and Openlogreplicator

SQL Server performance issues in production environments can be difficult to diagnose and often affect application reliability. I help diagnose and resolve SQL Server performance problems safely — without risky changes or unnecessary downtime. Common issues I solve: - High CPU usage or SOS_SCHEDULER_YIELD waits - Query timeouts during peak hours - Blocking chains and long-running transactions - Deadlocks impacting application stability - Slow queries and inefficient stored procedures I’m Kundan, a Senior SQL Server DBA specializing in performance tuning, troubleshooting, and stability improvements. I work with SQL Server environments that support mission-critical workloads and require reliable and predictable performance. Most of my work involves troubleshooting live production SQL Server environments where performance issues must be diagnosed quickly and resolved safely, with changes approached carefully after understanding the root cause. Common root causes I address: - Misconfigured SQL Server or database settings - Inefficient isolation levels - Missing or poorly designed indexes - Outdated or inaccurate statistics - Non-SARGable predicates - Parameter sniffing and parameter sensitivity issues - NULL value parameters or optional parameters My focus is not just fixing immediate symptoms. I identify root causes, prevent recurring issues, and help systems continue to perform reliably as workloads grow — reducing production incidents and improving overall reliability. I regularly support high-availability SQL Server environments where uptime and consistent performance are critical. Experience & Platforms With 10+ years of hands-on experience, I’ve worked extensively with SQL Server versions from 2008 through 2025, including: - SQL Server (on-premises) - Azure SQL Database - Azure SQL Managed Instance - Amazon RDS for SQL Server I combine proven optimization techniques with modern SQL Server capabilities such as: - New Cardinality Estimator - Columnstore Indexes - Accelerated Database Recovery - Optimized Locking - Query Store - Intelligent Query Processing to resolve complex performance challenges efficiently. If your SQL Server environment is slow, unstable, or difficult to scale, I can help restore performance and keep it running smoothly. P.S. Most clients contact me when their SQL Server becomes slow during peak usage or starts causing timeouts in production.

I am a Senior Database Administrator & Database Architect with 10+ years of hands-on experience in RDBMS and Graph Databases, specializing in large-scale database migration, cloud modernization, and performance optimization for mission-critical systems. I have successfully delivered end-to-end database migrations and modernization programs across FinTech, Logistics, Healthcare, and Enterprise platforms, supporting clients in Singapore, UK, UAE, and South America. My work focuses on building highly available, scalable, and performance-optimized database environments on AWS and Azure. What I Do Best • End-to-end database migration and modernization with zero or minimal downtime • Performance tuning and query optimization for large, high-volume databases • Cloud-native database architecture and HA/DR implementation • Graph database modeling and optimization using AWS Neptune • Automation-driven DBA operations to reduce risk and manual effort Key Services I Offer Database Migration & Modernization • SQL Server → PostgreSQL / MySQL / Aurora • Oracle → PostgreSQL • SQL Server → AWS Neptune (Graph Database) • IBM DB2 → Aurora PostgreSQL • On-premises → AWS / Azure cloud migrations • Checksum-validated, low-downtime migration strategies Database Performance Optimization • Query rewrite and execution plan optimization • Index strategy design and tuning • Bottleneck identification for large datasets • Achieved 5x–20x performance improvements on critical workloads Cloud Database Engineering (AWS & Azure) • Amazon RDS, Aurora, EC2-hosted databases • AWS DMS migration pipelines • High Availability, Multi-AZ, failover & DR design • Monitoring and optimization using CloudWatch and Performance Insights Graph Database Engineering • AWS Neptune setup, tuning, and scaling • Gremlin and Cypher query optimization • Graph data modeling for complex relationships • SQL-to-Graph data transformation and integration Scripting & Automation • Python automation for ETL, migration, validation, and reporting • PowerShell and Bash scripting for DBA operations • Environment refresh automation for Dev / QA / UAT / Prod Reporting & ETL • SSIS, SSRS, Azure Data Tools (ADT) • Data warehouse design and transformation pipelines Technical Expertise • Databases: SQL Server, MySQL, PostgreSQL, Oracle, MongoDB, AWS Neptune, IBM DB2 • Query Languages: T-SQL, PgSQL, PL/SQL, Gremlin, Cypher • Cloud: AWS (RDS, Aurora, EC2, DMS, Redshift, VPC, KMS), Azure (IaaS / PaaS) • Scripting: Python, PowerShell, Bash • Tools: SSIS, SSRS, CloudWatch, SQL Profiler, Query Store, Performance Monitor Why Clients Choose Me • Proven experience with complex, high-risk migrations • Strong focus on data integrity, performance, and reliability • Clear communication and ownership from planning to delivery • Solutions built for long-term stability and scalability If you need a reliable DBA, migration specialist, or performance expert who can take full ownership and deliver results with precision, I’m ready to help.

Do you have a slow SQL Server query, a broken SSIS package, or a complex stored procedure that needs fixing? I am a Senior T-SQL Developer and Database Engineer with extensive experience in high-transaction environments where business logic resides within the database ("Thick Database" architecture). I specialize in troubleshooting, optimizing, and developing robust database solutions. Whether you need a quick fix for a performance issue or a long-term partner for backend development, I can help. HERE IS HOW I CAN HELP YOU: SQL PERFORMANCE TUNING I will analyze your slow queries and Execution Plans to reduce runtimes from minutes to seconds. I specialize in indexing strategies and code refactoring. T-SQL DEVELOPMENT & BUG FIXING I can write or fix complex Stored Procedures, Functions, Triggers, and Views. I have a strong background in L3 Support, so I am used to finding root causes quickly. ETL & DATA INTEGRATION (SSIS) I can build, fix, or modify SSIS packages. I have experience integrating data from various sources, including Oracle and third-party APIs. MIGRATION & DATA INTEGRITY Need to move data or update your schema? I write safe, reliable migration scripts to ensure your data remains consistent. WHY WORK WITH ME? - I am communicative and transparent (years of experience in direct client support). - I focus on long-term stability, not just quick patches. - I am available for ad-hoc tasks and part-time cooperation. Tech Stack: Microsoft SQL Server, T-SQL, SSIS, Oracle (Integration), SSMS, Git. Let's discuss how I can improve your database performance today!