Senior Full-Stack Software Engineer (Next-Gen Applications) // Toronto, ON (On-site).

Senior Full-Stack Software Engineer (Next-Gen Applications)

Location: Toronto, ON (On-site)

Type: Full-time

About the Role

As a Senior Full-Stack Software Engineer, you'll design, develop, and maintain innovative software applications to enhance security solutions. You will architect and build cloud-based and mobile applications, focusing on backend systems, real-time data exchange, and secure, scalable features. You'll collaborate with cross-functional teams and drive excellence in code quality, performance, and security.

Key Responsibilities:

• Build end-to-end features for multi-tenant cloud applications and mobile apps.
• Design and implement backend services using Go/Rust and front-end with React/TypeScript.
• Develop device integration layers for secure data exchange (e.g., Bluetooth, IP-based protocols).
• Create and maintain SRS and TSD documentation.
• Coordinate with vendors, manage deliverables, and enforce coding standards.
• Ensure security best practices (authN/authZ, encryption) and data protection.
• Optimize data queries, storage, and system performance.
• Collaborate cross-functionally with Product, Design, and Operations teams.
• Mentor engineers and uphold coding standards.

Qualifications

• 5+ years of experience in full-stack development (frontend, backend, DevOps).
• Proficiency in Go/Rust (or similar), React/TypeScript, cloud services (AWS/GCP/Azure), and CI/CD pipelines.
• Strong knowledge of data structures, algorithms, and distributed systems.
• Experience with secure, scalable backend services and robust web APIs (REST/gRPC).
• Excellent documentation skills (SRS, TSD).
• Experience with vendor management and coordinating external engineering teams.

Bonus Points:

• Familiarity with mobile hybrid development (Flutter/React Native).
• Experience with Bluetooth/BLE, embedded system APIs, or IoT communication.
• Knowledge of SQL optimization, event-driven architectures (Kafka), and cloud security.

Additional Competencies:

• Strong systems thinking and craftsmanship.
• Pragmatic leadership and mentoring skills.
• Clear communication and ability to defend architectural decisions.
• Adaptable and problem-solving mindset.