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Bertelsmann-Jobs

Senior .Net Developer

6135 Millcreek Drive, Mississauga, ON, L5N 7K6, Canada

$90,000 to $105,000 USD / year · Full-time

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Job details

Pay: $90,000 to $105,000 USD / year
Job type: Full-time
Experience: 5+ years of professional experience in .NET development.
Posting language: English
Posted: Oct 8, 2026

Original job description

Company 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.
Experience with front‑end technologies such as JavaScript, Angular, React, or Blazor.
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.
Employee engagement activities.

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.

Learn more about our commitment to Equal Opportunity and Accommodation Information here .

Recruiting-Platform powered by SmartRecruiters.

LegalEntity: Arvato USA LLC

Compensation: USD 90000 - USD 105000 - yearly

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More about this job

Responsibilities

The Senior .NET Developer will lead the modernization and maintenance of warehouse management software, including migrating legacy applications and developing backend services. They will collaborate with cross-functional teams to design technical solutions, perform code reviews, and ensure high standards of performance and security.

Requirements

Candidates must have 5+ years of professional experience in .NET development with strong proficiency in C#, ASP.NET, and SQL Server. A bachelor's degree in Computer Science or a related field is preferred, along with experience in cloud platforms, microservices, and Agile methodologies.

Skills

C#
ASP.NET
.NET Core
Web APIs
SQL Server
Object-oriented programming
Design patterns
SOLID principles
Git
CI/CD
JavaScript
Angular
React
Blazor
Azure
Microservices

Benefits

Medical insurance
Dental insurance
Vision insurance
Life insurance
Accidental death and dismemberment benefits
Long-term disability benefits
Paid time off
Paid holidays
Employee assistance program
Ongoing employee development training

Visa sponsorship

Not detected in the job text

Keywords

C#
ASP.NET
.NET Core
Web APIs
SQL Server
Object-oriented programming
Design patterns
SOLID principles
Git
CI/CD
JavaScript
Angular
React
Blazor
Azure
Microservices
Docker
Kubernetes
Agile
Scrum
SAP
Warehouse management software
Backend development
Cloud-native
Software architecture
Code quality
Security standards
Automation technology
Supply chain solutions
Microsoft Certified

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