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Junior Database Developer @ Data Core Systems

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 Junior Database Developer

Job Description

Key Responsibilities:

  • Design, develop, and maintain relational databases using MySQL and PostgreSQL
  • Write efficient and optimized SQL queries, stored procedures, triggers, and views
  • Collaborate with backend and full-stack developers to support database-driven features
  • Perform data migration, ETL processes, and schema updates as required
  • Monitor and fine-tune database performance and troubleshoot issues
  • Ensure data integrity, security, and backup strategies are implemented
  • Support day-to-day production database operations and participate in code reviews

Required Skills:

  • Strong hands-on experience with MySQL (InnoDB, performance tuning) and PostgreSQL (schemas, indexing, extensions)
  • Solid understanding of normalization/denormalization, database design principles
  • Experience with pgAdmin, MySQL Workbench, or similar tools
  • Proficient in writing complex joins, subqueries, and optimizing slow queries
  • Familiarity with Linux-based environments, shell scripting, and cron jobs
  • Good understanding of transaction management and ACID properties

Good to Have:

  • Understanding of ORM tools like Sequelize, Hibernate, or Prisma
  • Familiarity with CI/CD pipelines and DevOps workflows

Soft Skills:

  • Good communication and documentation skills
  • Ability to work independently and in teams
  • Problem-solving mindset with a keen attention to detail

Job Classification

Industry: IT Services & Consulting
Functional Area / Department: Engineering - Software & QA
Role Category: Software Development
Role: Software Development - Other
Employement Type: Full time

Contact Details:

Company: Data Core Systems
Location(s): Kolkata

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Keyskills:   MYSQL Postgresql SQL CI/CD Pipeline

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Data Core Systems

Data-Core Systems, Inc. is a provider of information technology, consulting and business process services. We offer breakthrough tech solutions and have worked with companies, hospitals, universities and government organizations. A proven partner with a passion for client satisfaction, we combine ...