Backend Developer

Client of Kalamntina

Responsibilities:

• Build, develop, and maintain backend integrations with external service providers, including payment gateways, delivery platforms, and accounting systems.
• Design, implement, and enhance RESTful APIs, backend services, and core business logic.
• Implement and support integrations with communication services such as SMS, email, and notification platforms.
• Collaborate closely with backend engineers to improve system architecture, scalability, and performance.
• Participate in code reviews and technical discussions to ensure code quality and best practices.
• Develop and maintain secure integrations using OAuth, webhooks, and third-party APIs.
• Write and maintain automated tests to ensure system reliability and code quality.
• Support backend deployment, monitoring, and ongoing maintenance in production environments.
• Identify, troubleshoot, and resolve backend issues and performance bottlenecks.
• Contribute to continuous improvement initiatives and perform additional tasks as required to support business objectives.

Qualifications:

• Strong proficiency in Node.js and Express.js.
• Proven experience designing and consuming RESTful APIs.
• Solid understanding of OAuth, webhooks, and third-party API integrations.
• Experience working with Firestore or other NoSQL databases.
• Proficiency in Git and collaborative version control workflows.
• Ability to write clean, maintainable, and well-tested code.
• Experience integrating payment gateways such as Stripe, Telr, Amazon Pay, Apple Pay, or similar solutions.
• Familiarity with cloud platforms, preferably Google Cloud Platform (GCP).
• Experience integrating delivery, logistics, or accounting systems (e.g., Deliverect, Armada, Lyve, Xero, ZATCA).
• Knowledge of multi-region or distributed system architecture.
• Familiarity with background job processing and asynchronous workflows.
• Strong communication skills and ability to collaborate effectively in a remote team environment.