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About the Role

As an experienced .NET Software Engineer, you will play a key role in driving the success of our Supply Chain Management (SCM) applications and the technical development and scaling of our core enterprise systems. Operating within a modern .NET ecosystem, you will actively contribute to the end-to-end software development lifecycle (SDLC), driving the design, enablement and implementation of high-performance product features. In this role, you will combine strong hands-on technical execution with team collaboration, helping to establish engineering best practices, designing robust APIs and ensuring overall software excellence.

Responsibilities

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.

Requirements

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).
Competency in web development and frontend integration, combining ASP.NET Core MVC with JavaScript to build highly interactive, responsive and performant user interfaces using UI components (such as Telerik UI), along with basic HTML and CSS skills.
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.
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.

Skills

.NET
C#
ASP.NET Core
ASP.NET Core MVC
.NET 10
Software Development Lifecycle (SDLC)
API Design
Oracle DB
SOLID principles
Clean Code practices
Agile/Scrum
GitLab
CI/CD
Dependency Injection
Repository Pattern
Clean Architecture
Modular Design
Database Architecture
SQL
Entity Framework Core
JavaScript
HTML
CSS
Git
Telerik UI

Location

Toronto, Ontario, Canada

Work Type

Hybrid
Remote

Experience Level

5+ years of experience in a similar role spanning software development and .NET web applications delivery.
Band 8

Education Level

University degree in Computer Science, Information Technology, Information Systems or a related technical field.

Salary/Compensations

CAD 89,355 – 124,779

Benefits

A comprehensive benefits package is offered in addition to this range.

About the Company

Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high-growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.
Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):
ATS: This segment serves customers in complex, regulated and high-reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.
CCS: This segment focuses on high-performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI-driven growth.
Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast-changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.

Equal Opportunity

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.