Senior .Net Developer

Bertelsmann; Mississauga; On-site; CAD 90,000 - 130,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

Life Insurance

AD&D

Paid Time Off

Employee Assistance Program

Professional Training & Development

Job summary

Bertelsmann seeks a Senior .NET Developer to modernize and maintain a warehouse management platform. You will migrate from legacy .NET Framework to modern .NET, build backend services and APIs, and support mobile and Windows apps, collaborating across product, operations, and engineering teams.

Ideal candidates have 5+ years in .NET development, Azure and cloud-native experience, and strong fundamentals in architecture, security, and CI/CD. Knowledge of SAP in operations is a plus.

Qualifications

• 5+ years of professional .NET development experience.
• Experience migrating legacy .NET Framework apps to .NET/.NET Core.
• Experience with back-end services, APIs, and cloud-native apps.

Responsibilities

• Design, develop, test, and maintain web and backend apps using .NET technologies.
• Lead architecture decisions, design patterns, and coding standards.
• Perform code reviews for quality, performance, security, and maintainability.
• Troubleshoot and resolve complex issues across dev, test, and prod.
• Collaborate with product, operations, and engineering teams to deliver solutions.
• Support CI/CD and agile practices, improve processes and tooling.
• Interact with internal/external stakeholders to resolve conflicts.

Skills

C#

ASP.NET

NET Core

Web APIs

SQL Server

OOP & SOLID

Git

CI/CD

Azure

Microservices

Docker

Kubernetes

Security best practices

Agile/Scrum

SAP knowledge

Education

Bachelor’s degree in Computer Science/IT or equivalent

Tools

Azure DevOps

SQL Server Management Studio

Job description

We're on it!
Arvato offers you one of the most dynamic work environments you can imagine. We are growing, innovating and we solve the challenges of our clients around the world every day. How do we do it? With our global team of 17,000 colleagues at 87 locations in over 17 countries and our special spirit: We're on it! As a strategic growth partner for our clients, we use cloud-based e-commerce and IT platforms as well as state-of-the-art automation technology to realize complex, global supply chain solutions.

Job Description

The Senior .NET Developer role supports the modernization, development, and maintenance of the warehouse management software platform, including migration of legacy .NET Framework applications to modern .NET, development of backend services and APIs, support of mobile and Windows-based applications, and work with Microsoft SQL Server. The role also contributes to improvements in architecture, performance, CI/CD, code quality, and development practices in collaboration with product, operations, and engineering teams.

• Design, develop, test, and maintain web-based and backend applications using .NET technologies (C#, ASP.NET, .NET Core).
• Collaborate with product owners, business analysts, and cross-functional teams to understand requirements and deliver effective technical solutions.
• Lead and contribute to application architecture, design patterns, and coding standards.
• Perform code reviews to ensure quality, performance, security, and maintainability.
• Troubleshoot, debug, and resolve complex technical issues across development, test, and production environments.
• Participate in project planning, contribute to process improvements, and support company growth initiatives.
• Interact with other departments, internal and external, to resolve conflicts effectively.
• Take initiative and ownership to support internal and external projects.
• Perform other duties as assigned by management.
• Abide by all company safety and hygiene regulations
• Continuous involvement and support with departmental process improvements
• Any additional tasks that may be assigned to ensure an efficient, safe, clean, and goal-oriented work environment

Qualifications

• Strong proficiency in C#, ASP.NET, .NET Core, and Web APIs.
• Experience with relational databases such as SQL Server and writing optimized queries and stored procedures.
• Solid understanding of object-oriented programming, design patterns, and SOLID principles.
• Experience with version control systems (e.g., Git) and CI/CD pipelines.
• Strong problem-solving skills and the ability to work independently in a fast-paced environment.
• Strong analytical, problem-solving, and troubleshooting skills.
• Ability to communicate effectively with both technical and non-technical stakeholders.
• Adaptability and willingness to learn new technologies as needed.
• Ability to work collaboratively in a team environment and independently as required.
• Performing variety of duties as required.
• The ideal candidate will have a Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent practical experience.
• 5+ years of professional experience in .NET development.
• Familiarity with cloud platforms (Azure preferred) and cloud-native application development.
• Experience with microservices architecture and containerization (Docker, Kubernetes).
• Knowledge of secure coding practices and application security standards.
• Prior experience in an Agile/Scrum development environment.
• Strong communication skills with the ability to explain technical concepts to non-technical stakeholders.
• Professional certifications (such as Microsoft Certified: Azure Developer Associate, AWS Certified Developer, or similar) are a plus.
• Knowledge of SAP pertaining to operations.

Additional Information

• Company paid Medical, Dental, Vision, Life Insurance, and Accidental Death & Dismemberment Benefits.
• Non-taxable Long-Term Disability benefits.
• Paid Time Off, including paid holidays.
• Employee Assistance Program.
• Ongoing employee development training.

Disclosure requirements pertaining to the collection of your personal data:

Responsible for processing the information provided in your application is the company specified in the job advertisement, with its registered office as indicated. The company processes your data for the purpose of establishing an employment relationship on the basis of Art. 6 (1) b GDPR / Section 26 (1) sentence 1 BDSG.

The retention period for your data is determined by the statutory time limits applicable in the respective country, beginning upon completion of the recruitment process. You can find these here .

You can contact the company’s Data Protection Officer at the above-mentioned postal address.

Further information on data protection and your rights can be found here .

We strive to be an equitable, inclusive, and accessible workplace for our employees and value their diverse perspectives, which contribute to the diversity of our company. Therefore, we welcome applications from people who enrich our company with their identity, background and personal experience. We are committed to providing a barrier-free recruitment process in accordance with applicable human rights and accessibility legislation. We want to keep the application process as simple as possible for you: focus on a meaningful resume; we do not require an elaborate cover letter. Please know that we can only accept your application through our online application portal.

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