Find your next tech and IT Job or contract UNIX

What you need to know about UNIX

UNIX is a multi-user and multitasking operating system, originally designed in the 1970s by AT&T Bell Labs. Known for its simplicity, modularity, and power, UNIX served as the foundation for many modern systems, such as Linux, macOS, and BSD. UNIX is based on a layered architecture, where the kernel manages hardware resources, and the upper layers provide user interfaces and software tools. It features a hierarchical file system and offers a rich collection of command-line tools enabling automation and customization of complex tasks. Primarily used in server, scientific, and development environments, UNIX is recognized for its stability, security, and portability. Its influence continues today, with its concepts and tools integrated into many modern operating systems

Your search returns 3 results.
Contractor

Contractor job
Senior Oracle Performance & Tuning Consultant - 12 month (Part time 2/5) - Brussels

Published on
Oracle
Powershell
SQL

12 months
£800-1,200
Brussels, Brussels-Capital, Belgium
Hybrid
Senior Oracle Performance & Tuning Consultant - 12 month (Part time 2/5) - Brussels Our important client is currently looking for a Senior Oracle Performance & Tuning Consultant for a 12 month contract (Part time 2/5) in Brussels. Work Conditions 2 days per week (≈100 days per year) Hybrid model: 50% on-site / 50% remote Full remote work possible after onboarding and familiarization Mission Join a dynamic team managing a diverse database ecosystem including Oracle Database, SQL Server, PostgreSQL, and Azure SQL DB. Your main role is to support business development teams by identifying Oracle performance bottlenecks, optimizing SQL queries, and improving overall database efficiency. As a Senior Oracle Performance & Tuning Consultant, you will work closely with infrastructure engineers, application architects, business analysts, and developers to ensure optimal Oracle database performance across environments. Key Responsibilities Analyse and optimize Oracle SQL queries and configurations Identify and resolve database performance issues Develop scripts and tools to automate performance analysis Collaborate with cross-functional teams to improve database architecture Document findings and share best practices Provide guidance and training to technical and non-technical stakeholders Required Skills Technical Skills Strong expertise in Oracle performance tuning and troubleshooting (without Oracle Performance & Tuning Packs or paid options) In-depth knowledge of DDL / DML Ability to write scripts (SQL, PowerShell, Unix) for automation and diagnostics Good understanding of networking and modern authentication mechanisms Soft Skills Autonomous, proactive, and team-oriented Able to challenge and improve existing architectures Strong documentation and knowledge-sharing skills Clear communication with both technical and non-technical audiences Security-aware and aligned with IT best practices If you are interested please send me your CV and I will contact you as soon as possible with further details.
Contractor

Contractor job
Java Developer with SQL - Central London

Published on

£250-400
London, United Kingdom
Java Developer with SQL Server – Central London Our Client is looking to recruit a seasoned professional with 5 plus years experience in developing with Java as a backend Developer with SQL Server. You will have a good understanding of Data Structures and Algorithms. In addition to the Java and SQL Server development skills you should working knowledge of Spring, working with large code base, SQL, Unix etc. In addition you will have solid problem solving and algorithm skills. Excellent communication skills both spoken and written. This is a 6 months assignment based in Central London. The rate is negotiable. Please send your CV in Word format along with daily rate and availability.
Contractor

Contractor job
Backend Java Developer

Published on

£250-400
City of London, England, United Kingdom
Backend Java Developer – City London We are urgently looking to recruit a Java backend Developers with at least 5 years experience. Must have strong Data structures and Algorithms experience. Also experience of Spring, working with large code base, SQL, Unix etc. You should ideally have a solid problem solving and algorithm background coupled with excellent communication skills. This is a 6 to 12 month contract assignment based in the City London. Please forward your CV to us in Word format along with rate and availability.

Contract roles and jobs for UNIX

Unix System Administrator (Linux...)

The Unix System Administrator (Linux, etc.) manages Unix/Linux systems, ensuring their configuration, maintenance, security, and performance.

Systems & Networks Engineer

The Systems & Network Engineer uses Unix systems to administer network infrastructures, manage servers, and ensure connectivity and security of information systems.

Database Developer (SQL, PL/SQL, Oracle...)

The Database Developer (SQL, PL/SQL, Oracle, etc.) interacts with databases running on Unix servers, using Unix scripts to manage databases and automate certain tasks.

Operations Engineer

The Operations Engineer oversees Unix environments, ensuring the proper functioning of servers, applications, and databases while optimizing performance and security.

3 results

Contracts

Contractor Permanent

Location

Remote type

Hybrid Remote On-site

Rate minimum.

£150 £1300 and more

Salary minimum

£20k £250k

Experience

0-2 years experience 3 to 5 years experience 6 to 10 years experience +10 years experience

Date posted

Connecting Tech-Talent

Free-Work, THE platform for all IT professionals.

Free-workers
Resources
About
Recruiters area
2026 © Free-Work / AGSI SAS
Follow us