We are looking for Senior Data Engineer for our client in San Jose, CA.
Job Title: Senior Data Engineer
Job Location: San Jose, CA
Job Type: Contract
Job Overview:
Pay Range: $55.00hr - $60.00hr
Requirement/Must Have:
- 5+ years of experience in data engineering, with demonstrated ownership of large-scale data migration projects.
- Strong to expert-level proficiency in Python for building and automating data pipelines.
- Deep hands-on experience with PostgreSQL/Oracle, including schema design, query optimization, and performance tuning.
- Proven experience designing and managing ETL/ELT pipelines at scale (millions of records).
- Experience mapping and transforming complex, legacy data structures across disparate systems or business entities.
- Strong understanding of data validation, reconciliation, and quality assurance techniques.
- Solid grasp of data modeling principles (normalization, indexing, partitioning).
- Experience with version control (Git) and CI/CD practices for data pipelines.
Responsibilities:
- Lead the end-to-end migration (transformation and load) of high-volume, high-complexity data into a new PostgreSQL-based infrastructure.
- Design, build, and maintain robust ETL/ELT pipelines capable of processing millions of records reliably and efficiently.
- Map and reconcile complex legacy data structures across multiple business entities into a unified target schema.
- Define and implement data validation frameworks to ensure integrity, completeness, and accuracy throughout the migration.
- Optimize pipeline performance, including query tuning, indexing strategy, and batch/incremental load design in PostgreSQL.
- Identify, troubleshoot, and resolve data quality issues, schema mismatches, and pipeline failures.
- Document data mappings, transformation logic, and migration runbooks for engineering and business stakeholders.
- Partner with business and technical stakeholders to align migration scope, timelines, and data requirements.
- Establish monitoring, logging, and alerting to track pipeline health and data quality post-migration.
- Mentor junior data engineers and contribute to engineering best practices and standards.
Nice to Have:
- Experience with orchestration tools (e.g., Airflow, Dagster, Prefect).
- Familiarity with cloud data platforms (AWS, Google Cloud Platform, or Azure).
- Experience with other relational or NoSQL databases and cross-database migrations.
- Background working in regulated or high-stakes data environments.
- Experience with containerization (Docker) and infrastructure-as-code.
- Exposure to data quality/testing frameworks (e.g., Great Expectations, dbt tests).
Skills:
- Python.
- PostgreSQL.
- Oracle.
- ETL/ELT.
- Data Migration.
- Schema Design.
- Query Optimization.
- Data Modeling.
- Git.
- CI/CD.
Qualification And Education:
- 5+ years of experience in data engineering.
- Expertise in Python and SQL databases.
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Benefits
Our Benefits Include:
- Medical, Dental, and Vision Insurance
- 401(k) Retirement Plan
- Health Savings Account (HSA)
- Disability Insurance (Short-Term and Long-Term)
- Life and AD&D Insurance
- Paid Sick Leave (where required by applicable state or local law)
- Supplemental Insurance Plans
- Identity Theft Protection
- Pet Insurance
- Employee Wellness Programs
- Employee Assistance Program (EAP)
- Career Growth and Professional Development Opportunities
Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws.
About Cynet Systems
Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia.
As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 14001, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.
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