MANNARINO Systems & Software Inc. is a leader in providing safety-critical systems, software, hardware and certification engineering services to the aerospace, defense, space, simulation & power generation industries.

Our customer base is very large, covering traditional aerospace companies as well as new and exciting markets, including electric propulsion, Urban Air Mobility, Unmanned Aerial Vehicle and autonomous flight.

The MANNARINO culture is focused on high quality, hard work, professionalism and teamwork within a highly respectful, motivating atmosphere geared towards long-term business growth.

As a member of our team, you will benefit from:

• a comprehensive group insurance and RRSP plan
• a flextime policy with paid overtime
• discretionary bonuses
• a fitness reimbursement program
• other office perks such as catered weekly lunches and free hot beverages (espresso, coffee, hot chocolate and tea)
• regular company outings

Career Opportunity and Primary Roles / Responsibilities

We are seeking a highly skilled and experienced Senior Software Developer to lead the design and development of a robust, scalable, and high-performance file system. This role involves working on low-level system components, optimizing storage performance, and ensuring data integrity and security. You will collaborate with cross-functional teams to build innovative solutions that power our infrastructure and products.

Key Responsibilities:

• Design and implement core components of a custom file system, including metadata management, data storage, caching, and access control.
• Optimize file system performance for various workloads and hardware configurations.
• Ensure reliability, fault tolerance, and data integrity across distributed environments.
• Develop and maintain documentation, including architecture diagrams, design decisions, and API specifications.
• Collaborate with DevOps, QA, and product teams to integrate the file system into broader infrastructure.
• Conduct code reviews, mentor junior developers, and contribute to best practices in system design and development.
• Stay up-to-date with emerging technologies and trends in storage systems, operating systems, and distributed computing.

Required Competencies

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 5+ years of experience in systems programming, preferably with file system or storage development.
• Strong proficiency in C or other systems-level programming languages.
• Deep understanding of operating system internals, I/O subsystems, and concurrency.
• Experience with ARINC 653 (or equivalent, eg POSIX) file systems, block storage, and networked file systems (e.g., NFS, SMB).
• Familiarity with performance profiling tools and debugging techniques.
• Excellent problem-solving skills and attention to detail.

Miscellaneous Requirements

• Experience with distributed file systems (e.g., Ceph, GlusterFS, Lustre).
• Knowledge of cloud storage architectures and APIs (e.g., S3, Azure Blob).
• Contributions to open-source file system projects.
• Experience with containerized environments (Docker, Kubernetes) and CI/CD pipelines.

• Work can be done remotely. 
• For employees based in Montreal, the work model is hybrid (at least one day at the office). 
• The position might require travel to visit customers (in North America)

Knowledge of English is required to communicate and work with customers outside the province of Quebec. / La connaissance de l'anglais est requise pour communiquer et travailler avec nos clients situés à l'extérieur de la province de Québec.

At MANNARINO, we believe that passion and a desire to learn is crucial. Diversity of thought and experiences leads to innovative solutions and creativity. This is why we would like to encourage all those interested to apply.

We are an equal opportunity employer. All applicants will be held in strict confidence. Only those selected for interview will be contacted.