Senior Full Stack Developer (C#)

About the Company
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 does have an office location in Guelph to provide employees opportunities to work intermittently in an office environment. Innosphere is committed to providing its employees with endless possibilities to learn new things and to work with the latest technologies.

Innosphere 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.

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.

Requirements

• Bachelor's degree in Computer Science or related program and/or relevant experience.
• Significant professional (5+ years) of experience building commercial applications with modern software engineering practices.
• Expert-level proficiency in C# with hands-on experience in multi-threaded and parallel processing.
• Strong understanding of threading models, synchronization primitives, and concurrency debugging.
• Proven experience in performance tuning and application profiling for large-scale systems.
• Advanced proficiency in SQL (query design, optimization, and data operations).
• Hands-on experience with Apache Spark for distributed data processing.
• Proven experience deploying solutions on AWS.
• Exceptional problem-solving and debugging skills with a strong focus on scalability and reliability.
• Must be currently residing in Canada and legally permitted to work in Canada.

Preferred Qualifications (Nice to Have)

• Experience in re-engineering legacy systems into modern architectures.
• Familiarity with microservices design principles and cloud-native development patterns.
• Strong communication and collaboration skills with a track record of working in cross-functional teams.

Benefits

• Generous Time Off.
• Above Average Benefits (Dental, Health, Vision, STD, LTD, AD&D, Life, Dependent Life).
• Home Office Benefit Program.
• Yearly Professional Development Budget.
• Annual Fitness Benefit.
• Lunch & Learns and Virtual Events.
• Annual In-Person Celebrations.
• RRSP with Company Match.
• Volunteer Days.
• Sports Tickets for Blue Jays games.
• Birthday Club.

How to Apply
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. No phone calls please.

Category
Software Development