Senior.NET Integration Developer - REMOTE (Canada)

Senior .NET Integration Developer - REMOTE (Canada)

Location : Toronto, ON, CA

Company : NTT DATA Services

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward‑thinking organization, apply now.

We are currently seeking a Senior .NET Integration Developer - REMOTE (Canada) to join our team in Toronto, Ontario (CA-ON), Canada (CA).

We are seeking an experienced .NET Integration Developer with a minimum of 7 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.
• 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.

Minimum Requirements

Other Desired Skills

NTT DATA endeavors to make https : / / us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https : / / us.nttdata.com / en / contact-us. This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here. If you'd like more information on your EEO rights under the law, please click here. For Pay Transparency information, please click here.

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