.NET Software Engineer

Celestica Inc.; Toronto; On-site; CAD 89,355 - 124,779; Full time

Job summary

Celestica Inc. is seeking a skilled .NET Software Engineer to contribute to scalable enterprise web applications using ASP.NET Core MVC and .NET 10+. You will design new product capabilities, build robust RESTful APIs, optimize data flows with Oracle DB, and adhere to SOLID and Clean Code principles.

Join an Agile team delivering high-quality software, collaborating with IT and business partners across time zones, and shaping modern development workflows with GitLab CI/CD.

Job description

.NET Software Engineer

Date: Jul 21, 2026

Location: Toronto, ON, CA

General Overview

Functional Area: Information Technology (ITM)
Career Stream: IT Solutions (SOLN)
Role: Specialist (SPE)
Job Title: Specialist, IT Solutions
Job Code: SPE-ITM-SOLN
Job Level: Band8
Direct/Indirect Indicator: Indirect

Detailed Description

Full professional level; applies software engineering expertise in a specific area of specialization. Work is performed within established professional standards, technical guidelines and project objectives. Works on problems of moderate to diverse scope where analysis of technical requirements, system architectures and data schemas requires evaluation of identifiable factors. Exercises technical judgment within defined procedures and software development practices to determine appropriate action. Receives general instructions on routine development tasks and detailed instructions on new projects or complex system assignments. Builds productive collaborative relationships across development, QA and business analyst teams.

Performs tasks such as, but not limited to, the following:

• Contribute significantly to the architecture, design and end-to-end delivery of scalable enterprise web applications using ASP.NET Core MVC and .NET 10.
• Play a key role in the new features enablement process, designing and building brand-new product capabilities from scratch to deliver strategic business value.
• Establish robust architectural foundations, design RESTful APIs and optimize data flows integrated with Oracle DB.
• Deliver clean, maintainable and scalable code by strictly adhering to SOLID principles and Clean Code practices.
• Actively participate in Agile/Scrum ceremonies including daily stand-ups, sprint planning, backlog refinement and retrospectives to ensure consistent sprint delivery and alignment.
• Manage modern development workflows in GitLab, utilizing standardized branching strategies, merge request processes and CI/CD practices.
• Collaborate closely with team members, sharing technical knowledge on modern .NET design patterns, coding standards and development best practices.
• Ensure application reliability and stability by defining and implementing code testing standards, structured debugging and proactive performance optimization.
• Proactively identify and resolve technical debt, modernize user interfaces and enhance application stability, security and performance.
• Collaborate with IT/Business partners, cross-functional teams and stakeholders to translate business requirements into clear technical specifications.
• Maintain comprehensive technical documentation for architectural designs, system configurations and database schemas to ensure long-term maintainability.
• Minimum of 5 years of professional experience in the .NET ecosystem, with a strong passion for modern C# features and ASP.NET Core.
• Solid expertise in software design and architecture (Dependency Injection, Repository Pattern, Clean Architecture and Modular Design).
• Advanced proficiency in Database Architecture and SQL, with experience optimizing Entity Framework Core integrated with Oracle DB (experience with other relational databases such as PostgreSQL or SQL Server is highly acceptable).
• Hands‑on experience with version control and modern Git workflows (GitLab, branch protection, Merge Requests) along with exposure to CI/CD automation pipelines.
• Proven ability to work independently, take technical ownership of features, manage priorities and drive high quality standards through constructive code reviews.
• Actively participate in technical discussions, business requirements alignment and specifications review with managers, architects and stakeholders within the local Canada timezone (EST).
• Demonstrate flexibility to collaborate across global timezones, ensuring daily alignment with the manager in Romania and cross‑functional development teams in Europe and Asia.
• Exceptional verbal and written English skills for cross‑cultural collaboration, negotiating technical requirements and explaining complex .NET concepts to both technical and non‑technical stakeholders.
• Self‑driven, proactive mindset with a focus on writing highly scalable, long‑term maintainable code and a desire to contribute to architectural discussions.
• Experience working in an Agile/Scrum environment with a solid understanding of sprint cycles, collaborative delivery and continuous improvement is preferred.
• Understanding of Supply Chain Management (SCM) processes or ERP workflows is considered a strong asset (openness and willingness to learn these business processes is highly valued).
• Knowledge or experience with UI frameworks (e.g., Telerik UI for ASP.NET Core with Ajax Binding, Tag Helpers) is a strong asset.
• Prior knowledge of Java or Java ADF is not required, though any basic familiarity with these technologies is a welcome asset.
• Openness to utilizing modern development tools and AI‑assisted engineering practices is preferred.

Physical Demands

• Duties of this position are performed in a normal office environment.
• Duties may require extended periods of sitting and sustained visual concentration on a computer monitor or on numbers and other detailed data.
• Repetitive manual movements (e.g., data entry, using a computer mouse, using a calculator, etc.) are frequently required.
• Occasional overnight travel is required.

The stated range includes Base Salary and target Short-Term Incentive (STI) compensation only. A comprehensive benefits package is offered in addition to this range.

The range described in this posting is an estimate by the Company, and may change based on several factors, including but not limited to a change in the duties covered by the job posting, or the credentials, experience or geographic jurisdiction of the successful candidate.

Salary Range: CAD 89,355 – 124,779

Typical Experience

• 5+ years of experience in a similar role spanning software development and .NET web applications delivery.

Typical Education

• University degree in one of the following: Computer Science, Information Technology, Information Systems or a related technical field.

Notes

This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.

Celestica is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against on any protected status (including race, religion, national origin, gender, sexual orientation, age, marital status, veteran or disability status or other characteristics protected by law).
At Celestica we are committed to fostering an inclusive, accessible environment, where all employees and customers feel valued, respected and supported. Special arrangements can be made for candidates who need it throughout the hiring process. Please indicate your needs and we will work with you to meet them.