.Net/C# Back end Developer

We are

At Synechron, we believe in the power of digital to transform businesses for the better. Our global consulting firm combines creativity and innovative technology to deliver industry-leading digital solutions. Synechron’s progressive technologies and optimization strategies span end-to-end Artificial Intelligence, Consulting, Digital, Cloud & DevOps, Data, and Software Engineering, servicing an array of noteworthy financial services and technology firms. Through research and development initiatives in our FinLabs we develop solutions for modernization, from Artificial Intelligence and Blockchain to Data Science models, Digital Underwriting, mobile-first applications and more. Over the last 20+ years, our company has been honored with multiple employer awards, recognizing our commitment to our talented teams. With top clients to boast about, Synechron has a global workforce of 16,400+, and has 60 offices in 20 countries within key global markets.

Our challenge

We are seeking a highly skilled .NET / C# Backend Developer to design, build, and maintain scalable, high‑performance backend applications and services. The ideal candidate will have strong expertise in C#, .NET Core, Web APIs, database design, and cloud‑based architectures, and will collaborate closely with frontend developers, architects, and product teams to deliver robust enterprise solutions.

Additional Information*

The base salary for this position will vary based on geography and other factors. In accordance with law, the base salary for this role if filled within Toronto, ON is CAD $110k – CAD $120k/year & benefits (see below).

The Role

Responsibilities:

Design, develop, and maintain backend services and RESTful APIs using C#, .NET Core / .NET 6+

Build scalable and secure microservices‑based architectures

Develop and optimize business logic, data access layers, and service integrations

Write clean, reusable, and well-documented code following SOLID principles and best practices

Integrate applications with databases (SQL Server, PostgreSQL, MySQL, or NoSQL)

Implement authentication and authorization mechanisms (JWT, OAuth2, Azure AD, Identity Server)

Ensure application performance, reliability, and scalability through profiling and optimization

Collaborate with frontend teams, architects, and DevOps for seamless integrations and deployments

Participate in code reviews, unit testing, and automated testing initiatives

Troubleshoot and resolve production issues, performance bottlenecks, and bugs

Support CI/CD pipelines and deployment processes in cloud environments

Requirements:

Strong proficiency in C# and .NET Core / .NET Framework

Experience developing RESTful APIs and backend services

Solid understanding of object‑oriented programming (OOP) and design patterns

Hands‑on experience with relational databases (SQL Server, Oracle, MySQL, PostgreSQL)

Experience with Entity Framework / Dapper or similar ORM tools

Knowledge of microservices architecture and API integration

Familiarity with version control systems (Git, Azure DevOps, GitHub)

Understanding of asynchronous programming, multithreading, and memory management

Strong debugging, problem‑solving, and analytical skills

Preferred, but not required:

Experience with cloud platforms such as Azure / AWS / GCP

Exposure to Docker and containerization

Experience with message brokers (Azure Service Bus, RabbitMQ, Kafka)

Knowledge of CI/CD tools (Azure DevOps Pipelines, GitHub Actions)

Familiarity with NoSQL databases (Cosmos DB, MongoDB)

Experience with logging, monitoring, and observability tools

Understanding of API security, rate limiting, and caching (Redis)

We offer:

• A multinational organization with 60 offices in 20 countries and the possibility to work abroad.
• 15 days (3 weeks) of paid annual leave plus an additional 10 days of personal leave (floating days and sick days).
• A comprehensive insurance plan including medical, dental, vision, life insurance, and long-term disability.
• Flexible hybrid policy.
• RRSP with employer’s contribution up to 4%.
• A higher education certification policy.
• On-demand Udemy for Business for all Synechron employees with free access to more than 5000 curated courses.
• Coaching opportunities with experienced colleagues from our Financial Innovation Labs (FinLabs) and Center of Excellences (CoE) groups.
• Cutting edge projects at the world’s leading tier-one banks, financial institutions and insurance firms.
• A truly diverse, fun-loving and global work culture.

S YNECHRON’S DIVERSITY & INCLUSION STATEMENT

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.