Senior Backend API Developer – Node.js, REST API, React Native, Cloud

Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!; Toronto; Hybrid; CAD 110,000 - 150,000; Full time

Job summary

Astra-North Infoteck Inc. in Toronto is seeking an experienced Backend API Developer to design, develop, and maintain scalable backend services and APIs for mobile apps built on React Native.

You will work hybrid, 2 days in the office, and collaborate with architects and business stakeholders to deliver secure, high-performance solutions. The role emphasizes OAuth/JWT/Sso, CI/CD, and enterprise integrations.

Qualifications

• 5+ years in backend development.
• Experience building RESTful APIs and microservices.
• Strong SQL and NoSQL knowledge (PostgreSQL, MySQL, MongoDB).
• Experience with cloud platforms (AWS, Azure, or GCP).
• Familiarity with OAuth, JWT, and API security.

Responsibilities

• Design, develop, and maintain backend services using Node.js.
• Build secure, scalable REST APIs for React Native mobile apps.
• Integrate backend with databases, third-party systems, and enterprise apps.
• Collaborate with mobile developers, architects, and stakeholders.
• Implement authentication/authorization (OAuth, JWT, SSO).
• Optimize performance, scalability, and reliability.
• Troubleshoot production issues and provide support.
• Develop unit tests and participate in code reviews.
• Ensure adherence to security, coding, and quality standards.

Skills

Backend development

RESTful APIs

Microservices

SQL/NoSQL databases

Cloud platforms

API security

CI/CD / DevOps

Git

React Native integration

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Kubernetes

API Gateway

Job description

Toronto - Hybrid: 2 days a week in office

We are looking for an experienced Backend API Developer to design, develop, and maintain scalable backend services and APIs for mobile applications built on React Native. The ideal candidate should have strong expertise in Node.js, RESTful APIs, cloud technologies, and integration with enterprise systems.

Key Responsibilities:

• Design, develop, and maintain backend services using Node.js.
• Build secure, scalable, and high-performance REST APIs for React Native mobile applications.
• Integrate backend services with databases, third-party systems, and enterprise applications.
• Collaborate with mobile developers, architects, and business stakeholders to deliver end-to-end solutions.
• Implement authentication and authorization mechanisms (OAuth, JWT, SSO).
• Optimize application performance, scalability, and reliability.
• Troubleshoot production issues and provide ongoing support.
• Develop unit tests and participate in code reviews.
• Ensure adherence to security, coding, and quality standards.

Required Skills

• 5+ years of experience in backend development.
• Experience developing RESTful APIs and microservices.
• Strong knowledge of SQL and NoSQL databases (PostgreSQL, MySQL, MongoDB).
• Experience with cloud platforms such as AWS, Azure, or GCP.
• Experience with API security, OAuth, JWT, and API Gateway.
• Familiarity with CI/CD pipelines, Git, and DevOps practices.
• Understanding of React Native mobile application architecture and integration patterns.

Preferred Skills

• Experience with GraphQL.
• Knowledge of Docker and Kubernetes.
• Experience integrating with SAP, Oracle, or other enterprise platforms.
• Exposure to Agile/Scrum delivery methodology.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field.
• Strong communication and stakeholder management skills.
• Experience working in enterprise-scale mobile application projects.

Nice to Have:

• Utilities industry experience.
• Experience with mobile app releases on iOS and Android platforms.
• Knowledge of enterprise integration and cloud-native architectures.

This role will be responsible for building robust backend APIs that power modern React Native mobile applications while ensuring scalability, security, and high availability.