.NET Integration Developer

Job Title: .NET Integration Developer

Location: Toronto, NS (Remote)

Type: Contract

• We are seeking an experienced a .NET Integration Developer with a minimum of 7-8 years of proven experience building and maintaining enterprise integration solutions.
• The ideal candidate will be a hands-on developer comfortable with the .NET stack, API-driven architectures, XML/JSON transformations, database development, and CI/CD practices.
• Strong communication skills and the ability to work with cross-functional teams are essential.

Day to Day Responsibilities:

• Design and implement integration solutions using .NET (C#), WCF, and RESTful APIs to connect internal systems, third-party services, and legacy applications.
• Develop, test, and maintain backend components (Windows services, console apps, web APIs) using ASP.NET, Entity Framework, ADO.NET, and LINQ.
• Create and maintain data transformation logic using XML/XSLT, JSON mappings, and custom transformation code for data exchange between systems.
• Build client-facing and administrative web functionality using HTML, CSS, and client-side scripting (JavaScript/jQuery, Angular) where applicable. Design and optimize database schemas and queries; write stored procedures, views, and performance-tuned SQL for SQL Server and/or Oracle.
• Implement logging, error handling, retry and idempotency strategies for reliable integrations; diagnose and remediate integration failures.
• Collaborate with product owners, architects, QA, and operations to gather requirements, define interfaces (Swagger/OpenAPI), and produce integration specifications.
• Participate in DevOps and CI/CD activities: create build/release pipelines, automate deployments to IIS (and other hosting environments), and work with source control (Git). Ensure security and compliance of integration endpoints (authentication, authorization, encryption, secure transmission).
• Perform code reviews, unit testing, and integration testing; mentor junior developers on best practices for integration development.
• Document integration workflows, API contracts, message formats, runbooks, and operational playbooks for support and auditability.
• Support production environments: triage incidents, perform root-cause analysis, and implement long-term fixes.

Skillsets and Qualifications (with years of experience):

Required

• Overall experience: Minimum 7 8 years in software development, with significant exposure to integration projects.
• .NET Framework / C#: 7+ years - Strong object-oriented design, multi-threading, async programming, and real-world .NET application experience.
• ASP.NET / Web API: 5+ years - Building REST APIs and web applications.
• XML / XSLT / JSON: 5+ years - Complex XML transformations and JSON schema handling.
• ADO.NET / Entity Framework / LINQ: 5+ years - Data access patterns, ORM usage, performance tuning.
• IIS: 4+ years - Deployment and configuration of web applications and APIs.
• Databases (SQL Server / Oracle): 5+ years - Schema design, T-SQL/PL-SQL, stored procedures, indexing and query optimization.
• Client-side scripting (JavaScript / jQuery / Angular): 3 5 years - Ability to implement front-end integration points and troubleshoot client-side issues.
• API communication, WCF, REST web services: 4 6 years - SOAP/WCF experience plus REST API design and consumption.
• Windows application programming: 3 5 years - Experience building Windows services, scheduled jobs, or desktop integration utilities.
• DevOps / CI-CD pipelines: 2 4 years - Experience with build systems, release pipelines, automated deployments and basic infrastructure-as-code.
• Communication skills: Excellent verbal and written communication; experience creating API documentation and technical runbooks.

Minimum Requirements:

• 7+ years in software development, with significant exposure to integration projects.
• 7+ years .NET Framework / C#:- Strong object-oriented design, multi-threading, async programming, and real-world .NET application experience.
• 2+ Years ASP.NET / Web API: Building REST APIs and web applications.
• 2+ Years XML / XSLT / JSON: Complex XML transformations and JSON schema handling.
• 2+ years ADO.NET / Entity Framework / LINQ- Data access patterns, ORM usage, performance tuning.

Other Desired Skills:

• 4+ years IIS - Deployment and configuration of web applications and APIs.
• 2+ years Databases (SQL Server / Oracle) - Schema design, T-SQL/PL-SQL, stored procedures, indexing and query optimization.
• 3+ years Client-side scripting (JavaScript / jQuery / Angular)- Ability to implement front-end integration points and troubleshoot client-side issues.
• 4+ years API communication, WCF, REST web services - SOAP/WCF experience plus REST API design and consumption.
• 3+ years Windows application programming - Experience building Windows services, scheduled jobs, or desktop integration utilities.
• 2+ years DevOps / CI-CD pipelines: Experience with build systems, release pipelines, automated deployments and basic infrastructure-as-code.
• Communication skills: Excellent verbal and written communication; experience creating API documentation and technical runbooks.