Senior Full Stack Developer (C#)

Senior Full Stack Engineer

Innosphere is seeking a Senior Full Stack Engineer with advanced expertise in C#, concurrency models, and modern architectural design principles. This role is pivotal in modernizing our core systems by re-engineering legacy synchronous workflows into highly concurrent, thread-safe architectures that drive superior performance and scalability.

Roles & Responsibilities :

• Lead the design and development of highly concurrent, multi-threaded applications in C#.
• Re-architect legacy synchronous workflows into scalable, thread-safe solutions.
• Apply advanced knowledge of threading models, synchronization primitives, and performance tuning to optimize system throughput and minimize contention.
• Design, develop, and optimize complex SQL queries, stored procedures, and large-scale data operations, including staging and transformations.
• Utilize Apache Spark for distributed data processing at scale.
• Deploy and manage solutions on AWS, ensuring reliability, scalability, and cost efficiency.
• Diagnose and resolve concurrency issues, perform application profiling, and drive continuous improvements in system performance.
• Collaborate with cross-functional teams to define technical requirements, align architecture with business goals, and deliver high-quality solutions.

Qualifications :

Nice to Have :

About Innosphere :

Founded in 1997, Innosphere provides technology staffing solutions to clients across North America. We have specialized in remote work for over 15 years. Our staffing solutions include fully managed development teams coupled with expert consulting, full-time hiring, and flexible staffing.

Innosphere is a permanent remote company but we do have an office location in Guelph to provide employees opportunities to work intermittently in an office environment. We have collaborative space for meetings, lunches, and company events. Our employees have the freedom to choose where they prefer to work.

Innosphere is committed to providing its employees with endless possibilities to learn new things and to work with the latest technologies.

When we hire, we look for people who align with our core values :

Remote First : Innosphere is a remote company but offers in-office workspace. Employee connections are fostered through shared experiences and events.

Community Involvement : Innosphere strives to make a difference in the community through charity initiatives and volunteer opportunities.

Employee Growth : Innosphere provides opportunities to work with new technologies and funds employee training. Our philosophy is to promote internally when possible.

Life as an Innospherian - Who we are and how we work :

Some other perks :

Innosphere welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process. Only applicants meeting the criteria outlined above will be contacted as part of the shortlisting process. All applicants are subject to a criminal, educational, and employment history background check. Must be currently residing in Canada and legally permitted to work in Canada. No phone calls please.