Integration Developer C#,.Net (SC Cleared, Public Sector)

GCS; Devon and Torbay; On-site; GBP 55,000 - 75,000; Full time

Job summary

GCS is hiring an Integration Engineer to work with stakeholders and IT teams across the business in the UK. The role centers on designing data mappings, APIs, and workflows for secure data exchange between systems.

You will develop RESTful services using C#/.NET, configure connectors, and ensure reliability with robust error handling. Key tooling includes Azure Logic Apps, Azure Data Factory, and SSIS to orchestrate data flows, with supporting work in Postman, Swagger, and API gateways.

Qualifications

• Experience designing data mappings and workflows for cross-system integration.
• Hands-on development of RESTful APIs and backend services.
• Proficiency with cloud-based integration platforms and middleware tools.
• Ability to implement secure data exchange and error handling.
• Knowledge of data formats such as JSON, XML, and CSV.

Responsibilities

• Design data mappings, transformations, APIs, and message schemas.
• Develop, test, and deploy integration solutions using C#/.NET or similar.
• Configure connectors and ensure reliability with error handling and retries.
• Orchestrate data flows using Azure Logic Apps, Data Factory, and SSIS.
• Build and maintain REST/SOAP APIs with secure access.
• Test integration workflows end-to-end and debug with relevant tools.
• Document API contracts and integration configurations for maintainability.

Skills

Integration design

API integration

Data mapping

REST APIs

Azure Logic Apps

Azure Data Factory

Postman

SSIS

Testing & debugging

Documentation

Collaboration

Fiddler

Tools

Azure Logic Apps

Azure Data Factory

SSIS

Postman

Swagger

API gateways

Fiddler

Job description

1. Integration Design:
   Collaborate with business stakeholders, IT teams, and external partners to gather integration requirements and define workflows. Design data mappings, transformations, APIs, and message schemas to facilitate the secure and efficient exchange of data between systems.
2. Development and Implementation:
   Design, develop, test, and deploy integration solutions using C#, .NET, or similar programming languages. Build RESTful APIs and backend services to support integration needs. Configure connectors and implement robust error handling and retry mechanisms to ensure reliability and data integrity.
3. Integration Platforms and Tools:
   Utilize integration platforms such as Azure Logic Apps, Azure Data Factory, SSIS, or other middleware tools to orchestrate data flows and integrate diverse systems. Experience with tools such as Postman, Swagger, and API gateways is highly desirable.
4. API and Service Integration:
   Build and maintain APIs (REST and/or SOAP), working with authentication, authorization, and secure data exchange. Integrate internal and third-party APIs to facilitate service-oriented and event-driven architecture across systems.
5. Data Transformation and Mapping:
   Implement data transformation logic to convert between formats like JSON, XML, and CSV. Design reusable components and mappings to streamline data flow between systems with different schemas or protocols.
6. Testing and Debugging:
   Perform unit, integration, and end-to-end testing of integration workflows and APIs. Debug issues using tools such as Fiddler, Postman, and application logs. Continuously optimize performance and reliability through code refactoring and system tuning.
7. Documentation and Reporting:
   Document API contracts, integration configurations, and solution architecture to support maintainability. Provide progress updates, technical summaries, and risk reports to stakeholders throughout the project lifecycle.
8. Collaboration and Communication:
   Work closely with software developers, data engineers, QA teams, and business analysts to align integration work with broader project goals. Clearly communicate technical designs, project updates, and roadblocks to both technical and non-technical stakeholders.

Continuous Learning:
Keep up-to-date with integration frameworks, cloud technologies, and development best practices. Actively participate in knowledge-sharing sessions and contribute to the continuous improvement of integration standards and code quality

Preffred candiadte should be from

• HM Revenue & Customs (HMRC)
• Department for Work and Pensions (DWP)
• Home Office
• Ministry of Defence (MOD)
• Ministry of Justice (MOJ)
• HM Treasury
• Department for Education (DfE)
• Department for Transport (DfT)
• Department of Health and Social Care (DHSC)
• Department for Environment, Food & Rural Affairs (DEFRA)
• Department for Science, Innovation & Technology (DSIT)
• Foreign, Commonwealth & Development Office (FCDO)