Complex SQL queries jobs

Database Engineer - Specialist

Sagility · Posted Nov 21, 2023

Open

Georgia, United States

Apply with RefersoAI Apply on careers page

Database Engineer - Specialist

Sagility · Posted Nov 21, 2023

Open

Georgia, United States

Apply with RefersoAI Apply on careers page

.NET Full Stack Developer

Siemens Healthineers · Posted Nov 6, 2026

Open

3–5 years

Apply with RefersoAI Apply on careers page

Responsibilities

Design, develop, test, and maintain web applications using ASP.NET Core/.NET Framework.
Develop responsive and user-friendly UI using Angular, React, JavaScript, TypeScript, HTML5, and CSS3.
Create and consume RESTful APIs and Web Services.
Design, implement, and optimize SQL Server databases, stored procedures, views, and queries.
Troubleshoot, debug, and resolve application issues across the full technology stack.

Requirements

Bachelor's or Master's degree in Computer Science, Information Technology, Engineering, or related field.
Nice to have: Azure Cloud Services
Nice to have: microservices architecture
Nice to have: Entity Framework/Core
Nice to have: automated testing frameworks

Skills

C#ASP.NET Core ASP.NET MVC .NET Framework .NET Core REST APIs microservices object-oriented design principles design patterns Angular React JavaScript TypeScript HTML5 CSS3 Bootstrap Microsoft SQL Server

See full job description

Prime Finance Applications Support - Assistant Vice President

Citi · Posted Nov 5, 2026

Open

Belfast, Northern Ireland, United Kingdom
Hybrid
Full-time · Manager

Apply with RefersoAI Apply on careers page

Provide technical and business support for Citi’s Prime Finance Application stack, ensuring stability, efficiency, and effective improvements across global teams.

Compensation

competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

Responsibilities

Provide direct user support for critical Prime Applications
Provide support for all Prime business issues
Develop, maintain and enhance monitoring solutions
Handle all incoming business requests during core business hours
Ensure platform operational during all business hours

Requirements

Bachelor’s/University degree or equivalent experience
Nice to have: trading and Middle office functions
Nice to have: regulatory and compliance assurance
Nice to have: SFTR
Nice to have: Dodd-Frank

Skills

Unix/Linux operating systems complex SQL queries financial messaging technologies Solace MQ

Prime Finance Applications Support - Assistant Vice President

Citi · Posted Nov 5, 2026

Open

Belfast, Northern Ireland, United Kingdom
Hybrid
Full-time

Apply with RefersoAI Apply on careers page

Provide technical and business support for Citi’s Prime Finance Application stack, ensuring stability, efficiency and effective improvements across trading, sales, middle office and operations.

Compensation

competitive base salary (which is annually reviewed)

Responsibilities

Provide direct user support for critical Prime Applications
Provide support for all Prime business issues
Develop, maintain and enhance monitoring solutions
Work off the central ticketing queue to handle all incoming business requests during core business hours
Ensure the platform is operational for business during all business hours

Requirements

Bachelor’s/University degree or equivalent experience
Nice to have: Experience in trading and Middle office functions
Nice to have: Technical Expertise for Prime Brokerage or Securities Lending application functionalities
Nice to have: Regulatory and Compliance Assurance (SFTR, Dodd-Frank)
Nice to have: Domain Knowledge of trade lifecycle

Skills

Unix/Linux operating systems complex SQL queries financial messaging technologies (Solace, MQ, Kafka)

Lead Cloud Engineer

Blackbuck Insights · Posted Nov 3, 2026

Open

Bengaluru, Karnataka, India
On-site
Full-time · Lead
7–12 years

Apply with RefersoAI Apply on careers page

Creating data pipelines using a configurable framework (Databricks/PySpark) to load data into Google Cloud, while collaborating with global teams.

Responsibilities

Understand the overall requirement and create & execute resilient and high performant data pipeline jobs developed in Databricks / PySpark
Understand data and its relation /significance from a business perspective
Create custom scripts in python / pyspark
Minor development and enhancement activities as needed to handle new / custom requirements
Validate data between source and target & highlight issues and rerun jobs as needed

Requirements

Bachelor’s degree from a reputed university
Nice to have: Starburst
Nice to have: DBT
Nice to have: US Healthcare domain
Nice to have: Agile

Skills

SQL Complex SQL queries Stored Procedures ETL applications Google BigQuery PySpark

Senior Data Engineer, Valeo Service

Valeo · Posted Nov 3, 2026

Open

Cairo, Cairo, Egypt
On-site
Full-time · Senior
3+ years

Apply with RefersoAI Apply on careers page

As part of a highly dynamic team, the candidate will be responsible for design, creation and maintenance of the data warehouse and all related extraction, transformation and load of data functions for different projects from various data sources using Informatica products (PowerCenter, IDQ, MDM) and SQL technologies.

Responsibilities

Understand and analyze requirements to identify any gaps or missing information needed to perform development and testing activities
Translate business needs to technical specifications
Participate in high level design for needed data warehouses
Create and maintain data warehouses
Collaborate with different teams to integrate systems

Requirements

B.Sc. in Computer Engineering
B.Sc. in Communication
B.Sc. in Electronics
B.Sc. in Computer Science
Nice to have: Informatica PowerCenter

Skills

ETL concepts ETL design and optimization techniques Complex SQL queries Data modeling techniques Agile Scrum

Data Engineer / ETL Developer

HCL Global Systems Inc. · Posted Nov 2, 2026

Open

Mason, Ohio, United States
On-site
6+ years

Apply with RefersoAI Apply on careers page

Lead ETL development and support for GBD/RX, Regular project and Knox initiatives, ensuring data quality and performance.

Responsibilities

Develop and maintain ETL pipelines using Apache NiFi, PySpark, and AWS Glue
Write complex SQL queries and perform performance tuning on MySQL, PostgreSQL, and AWS DocumentDB
Implement and monitor streaming data solutions with Apache Kafka
Provide development and production support for GBD/RX, Regular project and Knox initiatives
Troubleshoot production issues, perform root cause analysis, and implement fixes

Skills

Apache NiFi PySpark AWS Glue complex SQL queries performance tuning MySQL PostgreSQL AWS DocumentDB Apache Kafka

Database Engineer - Specialist

Database Engineer - Specialist

Responsibilities

Requirements

Skills

.NET Full Stack Developer

Responsibilities

Requirements

Skills

Prime Finance Applications Support - Assistant Vice President

Compensation

Responsibilities

Requirements

Skills

Prime Finance Applications Support - Assistant Vice President

Compensation

Responsibilities

Requirements

Skills

Lead Cloud Engineer

Responsibilities

Requirements

Skills

Senior Data Engineer, Valeo Service

Responsibilities

Requirements

Skills

Data Engineer / ETL Developer

Responsibilities

Skills

Benefits

Benefits