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Hire SQL Developers

Ship reliable data logic and faster queries with senior SQL engineers who reduce latency and delivery risk.

From complex query optimization to ETL pipelines and stored procedures, our SQL developers help you improve data performance, maintain integrity, and keep reporting delivery predictable. AI-assisted delivery aligned to customer requirements for cost efficiency and faster turnaround.

SQL delivery governance

Governance built for stable and accurate data releases

Reduce data risk with explicit quality controls, validation standards, and performance monitoring tailored to SQL workloads.

Controls teams ask for before SQL launch

Accuracy, performance, and release discipline mapped to how modern data stacks actually ship.

Shortlist turnaround

3.9 days median across recent SQL roles

Kickoff speed

9 days median from selection to sprint start

Data accuracy

99.9% median validation pass rate across clients

SQL security and access control

Secure stored procedures, least-privilege access, and compliance with data protection standards for all workloads.

Security-ready

Clear IP and data ownership

Full ownership of SQL scripts, schemas, and data assets from day one.

Legal-ready

Query performance and health monitoring

Real-time tracking of query latency, execution plans, and data freshness in production.

Performance-focused

Talent pool preview

Vetted SQL Developer profiles ready to interview

Review a balanced shortlist with specialist, senior, and principal depth so you can hire for immediate delivery and long-term technical leadership.

View more profiles
HJ

Haris J.

Senior SQL Developer

Vetted

8 years

Role-matched

PostgreSQLQuery OptimizationdbtBigQuery

Optimized reporting queries for a SaaS analytics platform, reducing dashboard load times from 12s to 2s and improving data freshness for 50+ reports.

TY

Talha Y.

SQL Developer

Vetted

6 years

Role-matched

SQL ServerStored ProceduresETLData Validation

Built compliant transaction and reconciliation logic for a fintech firm, maintaining 99.99% data accuracy and reducing manual reconciliation effort by 60%.

YN

Yasir N.

Principal SQL Developer

VettedArchitect

11 years

Role-matched

Data WarehousingSnowflakedbtPerformance Tuning

Architected a Snowflake-based analytics layer for an ecommerce marketplace, enabling real-time inventory and sales reporting with 40% faster report generation.

Need a wider shortlist?

We can share additional sql developer profiles by seniority, timezone, and domain fit.

SQL engagement options

Choose the engagement model that matches your data roadmap

Start with focused query work or scale to a full data pod as your reporting and pipeline complexity grows.

Model selection support

We map SQL role shape to roadmap pressure, technical complexity, and stakeholder expectations.

Part-time SQL support

Best for iterative query optimization, reporting logic, and ongoing maintenance.

Starts from $2,000 / month

Best for: Steady query and reporting improvements

  • 20-25 hrs/week
  • SQL sprint support
  • Weekly performance reporting

Large-scale data migrations and warehouse builds are scoped separately.

Full-time SQL developer

Recommended

Best for core data logic delivery with daily ownership and production momentum.

Starts from $4,000 / month ($25/hour)

Best for: Active reporting and pipeline roadmap execution

  • 40 hrs/week
  • Full ownership
  • Daily progress + validation updates

Cloud warehouse costs and third-party tool licensing are billed separately.

Data engineering pod (2 SQL Devs + 1 Data Eng + 1 PM)

Best for new analytics launches, major migrations, and cross-functional data execution.

Starts from $12,000 / month

Best for: High-stakes initiatives with significant coordination needs

  • Cross-functional data pod
  • Parallel SQL and pipeline workstreams
  • End-to-end orchestration

Specialized compliance audits are scoped separately.

SQL hiring process

From data roadmap to production contribution in under two weeks

The process is tuned for SQL delivery risk: query quality, schema depth, and release reliability.

Typical kickoff window

Most teams start SQL delivery with selected talent in 7-14 days.

Decision points are explicit: SQL implementation depth, performance discipline, and communication quality are validated before kickoff.

  1. 1

    Data goal alignment and scope

    Step 1

    We map your query, reporting, and pipeline objectives to define role scope and success metrics.

    Day 1-2
  2. 2

    Shortlist with relevant SQL context

    Step 2

    Review candidates with prior experience in similar data domains, database engines, or scale constraints.

    Day 2-5
  3. 3

    Technical validation with SQL scenarios

    Step 3

    Interviews test query optimization logic, schema design depth, and SQL-specific tradeoff handling.

    Day 5-10
  4. 4

    Onboarding and data sprint integration

    Step 4

    Selected engineers join your workflows with clear ownership and immediate first-sprint goals.

    Day 7-14

Why product teams hire us for SQL

SQL execution tuned for performance, accuracy, and operational reliability

You get engineers who can build production-grade data logic without the overhead of a traditional data team. AI-assisted delivery aligned to customer requirements for faster turnaround and lower cost.

Built for high-stakes data delivery

Designed for teams shipping SaaS analytics, ecommerce reporting, fintech reconciliation, and performance-critical data experiences.

Typical start

9 days median to sprint kickoff

Query impact

25-35% median latency reduction

Accuracy lift

99.9% validation pass rate across clients

Fast ramp on SQL projects

Engineers integrate into your schema, query patterns, and release flow quickly.

Velocity

Focus on data accuracy and performance

Engineers prioritize validation, indexing, and execution plan quality to ensure reliable reporting.

Reliability

AI-accelerated SQL delivery

Selective use of AI tools for SQL generation and test data creation to reduce delivery effort and cost.

Efficiency

Service scope

SQL use cases mapped to business outcomes, not just queries

Use this service scope to match your data roadmap to the right implementation pattern, whether you need query optimization, reporting pipelines, or migration support.

Query and Data Logic

1

Complex SQL query development and optimization

Our SQL developers write efficient, maintainable queries using CTEs, window functions, and proper indexing to reduce latency and improve application responsiveness.

2

Stored procedures, triggers, and views

Hire SQL engineers to implement server-side logic that enforces business rules, automates data processing, and centralizes reusable data access patterns.

3

Data modeling and schema design

Design normalized or denormalized schemas that balance query performance with data integrity for transactional and analytical workloads.

Analytics and Reporting

1

Reporting queries and dashboards data layers

Build SQL foundations for BI tools and dashboards, delivering clean aggregations, time-series metrics, and drill-down-ready datasets for growth and finance teams.

2

Data warehouse and analytics schema design

Design star and snowflake schemas for BigQuery, Snowflake, or Redshift to support fast analytical queries and predictable report generation.

3

ETL and ELT pipeline development

Implement data pipelines using SQL-first tools like dbt or native SQL to transform, validate, and load data from multiple sources into your warehouse.

Performance and Operations

1

Query performance tuning and execution plan analysis

Identify slow queries, analyze execution plans, and apply indexing and rewrite strategies to reduce latency by 20-40% in typical workloads.

2

Database migration and modernization

Migrate legacy SQL logic between databases (e.g., Oracle to PostgreSQL, SQL Server to BigQuery) with minimal downtime and data validation.

3

Data quality and validation logic

Implement SQL-based data quality checks, constraint enforcement, and validation rules to ensure reporting accuracy and operational trust.

Engineering stack

Production-ready SQL stack for performance, maintainability, and iteration speed

Stack choices are optimized for query reliability, release safety, and long-term maintainability across transactional and analytical workloads.

PostgreSQL
MySQL
Microsoft SQL Server
Oracle
BigQuery
Snowflake
Redshift
Databricks SQL
dbt
Airflow
Fivetran
Stored Procedures
DBeaver
pgAdmin
SSMS
DataGrip
pg_stat_statements
Query Store
Datadog
Prometheus

Hiring readiness

SQL hiring playbook: evaluate quickly and onboard with less risk

Use this decision hub to align SQL interview depth, set quality boundaries, and connect hiring to measurable outcomes.

Responsibilities / Role Scope

Owns

  • SQL implementation with high performance and data integrity standards
  • Query optimization and execution plan tuning across application and reporting workloads
  • Stored procedure and view development with clear documentation
  • Data validation logic and quality checks

Collaborates on

  • Product and analytics teams to define reporting and data requirements
  • Backend engineers for efficient data access patterns and API alignment
  • Data engineers for pipeline orchestration and warehouse design
  • DevOps for deployment and monitoring of database objects

Interview Questions

Structured by level for consistent and faster interviewer calibration.

junior

Fundamentals and execution reliability

  1. What is the difference between INNER JOIN and LEFT JOIN?
  2. How do you use GROUP BY and aggregate functions?
  3. What is an index and how does it affect query performance?
  4. How do you write a subquery vs a CTE?

mid

Delivery ownership and decision quality

  1. How do you optimize a slow-running query using execution plans?
  2. What are window functions and when would you use them?
  3. How do you handle NULL values in aggregations and joins?
  4. How do you implement upsert logic in your database?
  5. How do you design a schema for both transactional and reporting needs?

senior

Architecture, risk control, and leadership

  1. How do you architect a data warehouse schema for high-volume analytics?
  2. How do you approach a large-scale migration of stored procedures between database engines?
  3. How do you design ETL pipelines for incremental loads and idempotency?
  4. How do you balance normalization vs denormalization for reporting performance?
  5. How would you implement data quality checks and validation at scale?

Why Outsource This Role

Faster query delivery

Ship optimized SQL and reporting logic without the overhead of local hiring or lengthy research.

Median kickoff: 9 days from role approval

Predictable data engineering spend

Scale SQL development bandwidth based on active priorities at a competitive hourly rate.

Starts from $25/hour for SQL development

Query performance gains

Improve application and report speed with engineers who know indexing and execution plan tradeoffs.

Median query latency reduction: 25-35% in 8 weeks

AI-accelerated SQL delivery

Cost efficiency through selective AI acceleration for routine SQL generation and test data creation.

Best-rate positioning with quality controls

Scalable data teams

Start with one SQL developer and expand to a full data pod as reporting and pipeline complexity grows.

Data pod scale-up window: 2-3 weeks

Testimonials

Client feedback from delivery partnerships across product teams.

The SQL developer integrated seamlessly and reduced our report generation time by 40% within the first two months.

DM

David M.

CTO, B2B SaaS company

We achieved accurate reconciliation logic and significantly improved our query performance within three months of hiring through Codexty.

JK

Jennifer K.

Engineering Manager, Fintech platform

Our analytics team finally has reliable, fast SQL foundations. The AI-accelerated delivery helped us stay on budget.

RT

Robert T.

VP Data, Ecommerce brand

FAQ

Answers to practical decision questions before you hire.

How quickly can a SQL developer start?

Most SQL projects begin onboarding within 7-14 days after role alignment and interview completion.

Do you work with PostgreSQL, SQL Server, and BigQuery?

Yes. We specialize in SQL development across PostgreSQL, MySQL, SQL Server, Oracle, BigQuery, Snowflake, and Redshift.

Can you help with query optimization?

Yes. We identify slow queries, analyze execution plans, and apply indexing and rewrite strategies to reduce latency and improve application responsiveness.

Do you use AI for SQL delivery?

Yes. We leverage AI-assisted tools for routine SQL generation and test data creation to accelerate delivery and reduce cost, with quality controls in place.

What is the hourly rate for SQL developers?

Our SQL development services start at $25/hour, providing high-quality data delivery at a competitive rate.

Hire SQL Developers and start delivery in 7-14 days

Share your requirements, we shortlist matched profiles, and your selected engineer starts with a clear onboarding plan. Initial response in under 24 hours.

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