Senior C# Backend Developer

Cynet Systems; Montreal; On-site; CAD 90,000 - 130,000; Part time

Benefits offered by this job

Medical, Dental, and Vision Insurance

401(k) Retirement Plan

Health Savings Account (HSA)

Life and AD&D Insurance

Paid Sick Leave

Career Growth and Professional Develop

Job summary

Cynet Systems invites a Senior C# Backend Developer to Montreal, QC, on a contract basis. The role centers on backend/server-side development and standalone desktop applications, leveraging multithreading, data structures, and algorithms to boost performance.

The ideal candidate brings expert C# and Visual Studio skills, plus strong SQL Server experience and familiarity with gRPC, NHibernate, WinForms, WCF, REST API, and Swagger. TDD/BDD experience and mentoring others are valued traits.

Qualifications

• 5-10 years of experience in C# development.
• Expert-level skill in Visual Studio environment.
• Strong understanding of .NET API internal mechanisms.

Responsibilities

• Develop robust code design and application optimization.
• Identify, detect, and refactor underperforming code to improve application efficiency.
• Apply TDD and BDD methodologies to both new and existing codebases.
• Maintain a professional demeanor and mentor other team members.
• Work on backend/server-side development and standalone desktop applications.
• Utilize multithreading, data structures, and algorithms to solve complex problems.

Skills

C#

.NET

Visual Studio

Backend Development

Multithreading

Data Structures

Algorithms

SQL Server

Performance

Git

TDD/BDD

gRPC

REST API

WinForms

WCF

Swagger

NHibernate

Tools

SQL Server

gRPC

NHibernate

WinForms

WCF

Swagger

Job description

We are looking for Senior C# Backend Developer for our client in

Job Title: Senior C# Backend Developer

Job Location: Montreal, QC

Job Type: Contract

Job Overview:

Requirement/Must Have:

• Demonstrated expert-level skill in C# and the Visual Studio environment.
• Significant professional experience as a backend/server-side developer or working on standalone desktop applications.
• Strong abilities in multithreaded programming, data structures, algorithms, and SQL.
• Experience with Git source control is highly desirable.
• Proven experience in identifying, detecting, and refactoring underperforming code to improve application efficiency and performance.
• Familiarity with TDD and BDD concepts and a willingness to apply these methodologies to both new and existing codebases.
• In-depth understanding of theoretical and practical programming concepts, including internal mechanisms of APIs and architectural choices.
• Prior experience in finance, trading, or domain-specific knowledge of asset classes, rates, FX, fixed income, or structured products is beneficial but not mandatory.
• Exposure to technology stack including SQL Server, gRPC, nHibernate, WinForms, WCF, REST API, and Swagger.
• Strong verbal and written communication skills.
• Ability to work independently while fostering a collaborative environment and mentoring others.

Responsibilities:

• Develop robust code design and application optimization.
• Identify, detect, and refactor underperforming code to improve application efficiency.
• Apply TDD and BDD methodologies to both new and existing codebases.
• Maintain a professional demeanor and mentor other team members.
• Work on backend/server-side development and standalone desktop applications.
• Utilize multithreading, data structures, and algorithms to solve complex problems.

Nice to Have:

• Experience with Git source control.
• Prior experience in finance, trading, or domain-specific knowledge of asset classes, rates, FX, fixed income, or structured products.

Skills:

• C#.
• .NET.
• Visual Studio.
• Backend/Server-Side Development.
• Multithreading.
• Data Structures & Algorithms.
• SQL Server.
• Performance Optimization.
• Git.
• TDD/BDD.
• gRPC.
• REST API.
• WinForms.
• WCF.
• Swagger.
• NHibernate.

Qualification And Education:

• 5-10 years of experience in C# development.
• Expert-level skill in Visual Studio environment.
• Strong understanding of .NET API internal mechanisms.

Benefits

Our Benefits Include:

• Medical, Dental, and Vision Insurance
• 401(k) Retirement Plan
• Health Savings Account (HSA)
• Disability Insurance (Short-Term and Long-Term)
• Life and AD&D Insurance
• Paid Sick Leave (where required by applicable state or local law)
• Supplemental Insurance Plans
• Identity Theft Protection
• Pet Insurance
• Employee Wellness Programs
• Employee Assistance Program (EAP)
• Career Growth and Professional Development Opportunities

Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws.

About Cynet Systems

Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia.

As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 1401, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.