Développeur back-end senior / Senior back-end developer

Explorance; Montreal (administrative region); On-site; CAD 85,000 - 120,000; Full time

Job summary

A leading technology firm in Montreal is seeking a Senior .NET Developer to design and implement scalable data access layers and APIs. The ideal candidate has over 7 years of experience in .NET back-end development and expertise in MS SQL Server. Responsibilities include collaborating across teams to deliver solutions and maintaining high-quality standards through code reviews. This position requires in-office presence and offers a dynamic environment with opportunities for professional growth.

Qualifications

• 7+ years of experience in .NET back-end development.
• Strong experience in building and optimizing RESTful APIs.
• Strong understanding of web application architecture.

Responsibilities

• Collaborate across teams to deliver solutions.
• Develop secure and high-performance backend components.
• Conduct peer code reviews to maintain quality standards.

Skills

C#

ASP.NET Core

RESTful APIs

MS SQL Server

Git

Azure DevOps

CI/CD pipelines

Redis Cache

IIS

Message brokers (RabbitMQ)

Job description

ONLY APPLY IF YOU RESIDE IN MONTREAL AND SURROUNDING AREAS

Role Description

Design and implement highly scalable and efficient data access layers and APIs.

Develop secure, reusable, and high-performance backend components for new features.

Work closely with software architects and developers to plan, design, and maintain solutions.

Estimate efforts for new features and change requests.

Write technical design documents and contribute to architecture discussions.

Responsibilities

• Collaborate across teams within Explorance and with partners to "Make it happen".
• Design and implement highly scalable and efficient data access layers and APIs.
• Develop secure, reusable, and high-performance backend components for new features.
• Work closely with software architects and developers to plan, design, and maintain solutions.
• Estimate efforts for new features and change requests.
• Ensure applications follow best practices in design, scalability, and performance.
• Write technical design documents and contribute to architecture discussions.
• Conduct and participate in peer code reviews to maintain high-quality standards.
• Troubleshoot and resolve production issues (Level 3 support).
• Work with ETL processes, stored procedures, and data extraction to ensure smooth data flow.
• Be part of feature demos, sharing progress with the team.
• Contribute to and uphold Explorance’s development standards and best practices.
• Stay up-to-date on the latest front-end technologies and trends.
• Mentor and guide junior developers.
  
  

What You Bring to the Team

• 7+ years of experience in .NET back-end development.
• 7+ years of experience with MS SQL Server development.
• Strong experience in building and optimizing RESTful APIs for large datasets.
• Proficiency in C#, ASP.NET Core, an open-source web development framework | .NET .
• Strong understanding of web application architecture and high-availability web systems.
• Experience with IIS and performance tuning & optimization (PTO).
• Knowledge of Redis Cache (or similar caching mechanisms).
• Experience with Git, Azure DevOps, and CI/CD pipelines.
• Familiarity with configuration management and job execution tools.
• Experience with message brokers (RabbitMQ is a plus).
• Bonus Skills (Nice to Have):
• Experience with Azure Stack.
• Knowledge of Graph SQL.
• Familiarity with Vue.js, Angular, or similar frameworks.
• Node.js experience.
• French proficiency is a plus.
  

What Makes You Stand Out

Skills

We are looking for more than just technical skills – we want passionate, curious, and team-oriented people who bring energy and enthusiasm to their work. Our ideal candidate has:

✅ Excellent communication skills (both written and verbal).

✅ The ability to multi-task and switch contexts efficiently.

✅ A problem-solving mindset – you see challenges as opportunities.

✅ Strong work ethic and attention to detail.

✅ A great sense of humor – because we believe work should be fun!

✅ The ability to embrace change and adapt in a dynamic environment.

✅ A belief in the quote: “It’s your attitude, not your aptitude, that determines your altitude.”

The Challenge (Should You Choose to Accept It)

🚀 Work on an industry-leading, battle-tested application used by millions.

🔍 Continuously refactor and improve our flagship product to stay ahead of the curve.

🌎 Help unify and enhance the user experience across our platform.

Other Requirements

📍 This role is Montreal-based (or surrounding areas).

🏢 This position requires full in-office presence.