SQL Query Optimization jobs

Senior Full-Stack Developer

Ascom · Posted Nov 6, 2026

Open

Cluj-Napoca, Cluj County, Romania
Full-time · Senior
5+ years

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Senior Full-Stack Developer

Ascom · Posted Nov 6, 2026

Open

Cluj-Napoca, Cluj County, Romania
Full-time · Senior
5+ years

Apply with Referso

Database Administrator

SpaceX · Posted Nov 4, 2026

Open

Hawthorne, California, United States
On-site
Full-time · Mid
$95K–$120K per year
3+ years

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SpaceX is looking for a Database Administrator with strong technical knowledge in Microsoft SQL/ PowerBI technologies to join the IT Engineering organization and manage database technologies used throughout SpaceX.

Compensation

Pay Range: Database Admin: $95,000.00 - $120,000.00

Responsibilities

Partner with internal customers to understand current challenges, plan/communicate improvements and anticipate future needs.
Perform root cause analysis of production-related database issues.
Collaborate with internal stakeholders to optimize schemas, queries, and database/server configurations.
Perform data migration / data transformation from OLTP to OLAP systems.
Develop code to automate routine tasks and provide end user self-service tools by leveraging PowerShell or a similar scripting language.

Requirements

Bachelor's degree in Computer Science or Engineering
Nice to have: SQL Server
Nice to have: Postgres
Nice to have: MySQL
Nice to have: Oracle

Skills

Microsoft SQL PowerBI Windows server/storage infrastructure

Senior Full Stack Developer - Marketing Platforms

Betsson Group · Posted Nov 2, 2026

Open

Malta
Senior

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Lead full stack development for marketing platforms, designing, building, and maintaining web-based solutions across front and back-end, integrating cloud and marketing systems, and mentoring the team.

Responsibilities

Participate in analysis, design, development, testing, release, administration, tuning and implementation of web-based solutions
Design, build, and maintain efficient, reusable, and reliable code
Develop integrations, prototypes, and proof of concepts for advanced platforms such as cloud systems, marketing platforms, Google products and other external systems
Maintain, curate, and extend the Digital environment and technological assets of the Betsson Group
Upgrade, configure, and debug existing systems

Requirements

Nice to have: AWS
Nice to have: EC2
Nice to have: VPC
Nice to have: subnets
Nice to have: security groups

Skills

PHP CakePHP Laravel JavaScript VueJS Linux shell scripting

Python Full Stack engineer

Artech LLC · Posted Nov 3, 2026

Open

Phoenix, Arizona, United States
On-site
Contract · Senior
$40–$45 per hour
5–9 years

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Senior Full Stack Developer with expertise in Java, Spring Boot, Python, REST APIs, Cloud Technologies, and Microservices Architecture.

Compensation

Pay Range: $40-45/Hour on W2/C2C (All Inclusive)

Responsibilities

Design, develop, and maintain scalable enterprise applications using Java 21, Spring Boot, and Python.
Develop and support data processing pipelines and utilities using Python.
Build high-performing microservices utilizing Spring Framework components.
Design and consume RESTful and SOAP APIs, including WSDL-based integrations.
Develop frontend applications utilizing ReactJS, Angular, HTML5, CSS3, and JavaScript.

Requirements

Bachelor's or Master's degree in Computer Science, Engineering, or related field.
Nice to have: Experience in Identity & Access Management (IAM) environments.
Nice to have: Experience with application security and vulnerability remediation.
Nice to have: Prior experience with One App / One Data platforms.
Nice to have: Familiarity with distributed systems and enterprise architecture patterns.

Skills

Java 21 Spring Boot Spring Security

Senior Full-Stack Developer

Senior Full-Stack Developer

Responsibilities

Requirements

Skills

Database Administrator

Compensation

Responsibilities

Requirements

Skills

Senior Full Stack Developer - Marketing Platforms

Responsibilities

Requirements

Skills

Python Full Stack engineer

Compensation

Responsibilities

Requirements

Skills

Benefits

Benefits