Senior Full-Stack Developer

iSystems Ltd · Lahore, Pakistan

We are looking for a Senior Full-Stack Developer to develop and maintain a secure, scalable, cloud-native Managed Wi-Fi platform. The role will cover backend microservices and APIs, captive portals and administration interfaces, subscriber/session and voucher management, Free RADIUS/AAA integration, and BSS connectivity.

You will work closely with the Solution Architect to ensure application security, scalability, reliability, automated testing, CI/CD, containerized deployments, and cloud infrastructure management.

Requirements:

• Develop backend microservices and REST APIs using Python, Fast API, PostgreSQL, and Redis.
• Build responsive captive portals and administration interfaces using React and TypeScript.
• Implement voucher management, subscriber/session management, Free RADIUS/AAA integration, and BSS connectivity.
• Ensure application security, scalability, reliability, automated testing, and performance optimization.
• Work with REST/Open API, OAuth2, OIDC, and JWT.
• Manage CI/CD pipelines and containerized/cloud deployments using Docker, Kubernetes/AKS, Azure/GCP, Terraform, and Helm.
• Work with observability tools such as Prometheus, Grafana, and Open Telemetry.
• Strong software engineering experience with Python, Fast API, React, TypeScript, SQL, and microservices is essential.

Qualifications:

• 5-6 years of relevant software development experience.
• Strong full-stack development experience across backend APIs, frontend applications, databases, and microservices.
• Experience with Free RADIUS, Wi-Fi, networking, AAA, telecom/ISP platforms, or multi-tenant SaaS solutions will be a strong advantage.
• Hands-on exposure to Git, CI/CD, cloud platforms, containerization, and Infrastructure as Code is preferred.