
Database Developer
2 days ago
We are looking for an experienced and performance-driven Database Developer with deep expertise in query tuning and database optimization. You will be responsible for enhancing database performance, analyzing slow-running queries, and ensuring that our data infrastructure supports high-throughput, low-latency operations across applications and analytical workloads.
Key Responsibilities:
- Analyze, tune, and optimize complex SQL queries for performance and efficiency.
- Identify and resolve performance bottlenecks related to indexing, execution plans, and data access paths.
- Design and implement indexing strategies to improve read/write performance.
- Monitor database performance using profiling tools and proactively address issues.
- Work closely with application developers to ensure efficient query design and proper database access patterns.
- Refactor poorly performing queries, views, stored procedures, and functions.
- Conduct load testing and simulate stress scenarios to test database performance under pressure.
- Maintain database statistics and ensure they are updated for optimal query planning.
- Collaborate with infrastructure teams to configure hardware, caching, and storage for performance.
- Write documentation on performance best practices, query standards, and optimization techniques.
Required Qualifications:
- Bachelors degree in computer science, Information Systems, or a related field.
- Proven experience in SQL performance tuning and optimization (e.g., T-SQL, PL/SQL, PostgreSQL, MySQL).
- Strong understanding of query execution plans, indexing, partitioning, and caching strategies.
- Hands-on experience with profiling and performance monitoring tools (e.g., SQL Profiler, EXPLAIN plans).
- Deep knowledge of database internals, memory usage, and storage architecture.
- Experience with large-scale datasets and high-concurrency environments.
- Excellent problem-solving and analytical skills with attention to detail.
Preferred Qualifications:
- Experience with in-memory databases or columnar storage engines.
- Familiarity with database optimization in cloud environments (AWS RDS, Azure SQL, GCP).
- Certification in performance tuning or database administration is a plus.
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