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For our client who is a leading global information services company, providing data and analytical tools to our clients around the world. we are looking for below hiring .

JOB DESCRIPTION:

Role : Senior C# .NET Developer (Oracle to PostgreSQL Migration Project)
Duration : 6 months extendable
Location : Nottingham ( Fully Remote )
Rates : £500 - 520 per day Inside IR35

Overview:

About the Project
We are undertaking a strategic transformation of a legacy system built on PHP and Oracle, migrating to a modern architecture using PostgreSQL and .NET (C#).

* 5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers.Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar.Strong understanding of PL/SQL and experience translating stored procedures into application logic.Familiarity with PostgreSQL, including performance tuning and SQL dialect differences.Experience working in hybrid environments where legacy and modern systems coexist.Comfortable using AI tools (e.g., GitHub Copilot, ChatGPT, code translators) to assist in development and migration tasks.Solid understanding of software architecture, design patterns, and integration strategies.Excellent communication skills and ability to work collaboratively in a cross-functional team

GCS is acting as an Employment Business in relation to this vacancy.

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Role- QA Test Analyst (.Net & C#)

Key Responsibilities

Develop and execute detailed test plans and test cases across both the legacy Oracle-based platform and the new C#/.NET services.Validate that the re-engineered C# logic faithfully reproduces the functionality of existing Oracle PL/SQL procedures, triggers, and packages.Perform end-to-end data validation to ensure consistency and correctness during the migration.Collaborate with developers, DBAs, and business analysts to extract requirements, define expected behaviour, and identify test coverage needs.Support regression, integration, and system-level testing in a hybrid environment where both platforms co-exist temporarily.Assist with implementing or optimising automated testing tools and frameworks to enhance test repeatability and efficiency.Document test outcomes clearly, raise defects with actionable detail, and contribute to tracking and resolution workflows.Help shape QA best practices and contribute to quality standards for phased migration projects.

Required Skills & Experience

3+ years of experience in software quality assurance, with involvement in enterprise-scale or migration-driven initiatives.Strong understanding of database-centric testing, including SQL querying, data reconciliation, and stored procedure validation.Familiarity with Oracle PL/SQL and experience validating its logic during transformation into .NET-based systems.Experience in migration of databases.Proficient and experienced in developing test plans comparing legacy and new system results to ensure no issues once a solution has migrated to the new platform/s.Experience working in hybrid environments where legacy and modern components run in parallel.Proficiency in designing and executing both manual and automated backend and integration-level tests.Strong attention to detail, analytical thinking, and problem-solving skills.Clear communicator, comfortable working across cross-functional teams and documenting complex scenarios.

Desirable Skills

Exposure to QA in both PHP and .NET environments.Experience with test automation tools or frameworks (e.g., Postman, Selenium, JMeter, or similar).Familiarity with AI-assisted tools for test generation, code analysis, or quality monitoring.Understanding of ETL processes and experience validating data transformations or pipeline behaviours.Background in agile delivery methods and working within sprint-based or iterative development cycles.

GCS is acting as an Employment Business in relation to this vacancy.

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Role: Sr Developer C# .Net Developer

Type: Contract (Inside IR35)

Nature: Hybrid (1 day per week in Nottingham)

Overview of the role-

Required Skills & Experience

5+ years of experience in .NET/C# development, with a strong focus on backend services and data access layers.Proven experience in migrating legacy systems, especially from Oracle to PostgreSQL or similar.Strong understanding of PL/SQL and experience translating stored procedures into application logic.Familiarity with PostgreSQL, including performance tuning and SQL dialect differences.Experience working in hybrid environments where legacy and modern systems coexist.Comfortable using AI tools (e.g., GitHub Copilot, ChatGPT, code translators) to assist in development and migration tasks.Solid understanding of software architecture, design patterns, and integration strategies.Excellent communication skills and ability to work collaboratively in a cross-functional team.

Desirable Skills

Experience with PHP, especially in legacy systems.Familiarity with DevOps practices, CI/CD pipelines, and containerization (Docker/Kubernetes).Exposure to domain-driven design and microservices architecture.Experience in agile development environments.

GCS is acting as an Employment Business in relation to this vacancy.

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Hi,

We are hiring for below:

JOB DESCRIPTION:

🚀 Now Hiring: Role: Senior Oracle Developer - Oracle to .NET (C#) Migration Project

Type: Contract Inside IR35
Location : Nottingham[ 1 day in office / week - Hybrid ]

Rate : £500 - 560 p/d Inside IR35

Job Description

Required Skills & Experience

5+ years of experience developing in Oracle PL/SQL, including deep knowledge of stored procedures, triggers, and packages.Proven experience in migrating business logic from Oracle to .NET (C#), with a focus on re-architecture rather than direct translation.Strong understanding of Oracle internals and how database logic integrates with external systems.Experience migrating data from Oracle to other databases especially Postgres/MySQL.Ability to work collaboratively in a cross-functional team environment.Strong problem-solving ability and attention to technical detail.Excellent communication skills, with the ability to document and explain complex systems clearly.

GCS is acting as an Employment Business in relation to this vacancy.

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