Sr. Developer-Application Development (Back-End)

CBTS; Tennessee; On-site; USD 90,000 - 130,000; Full time

Job summary

CBTS is seeking a backend software engineer to develop and optimize secure, scalable, high-performance backend systems. You will build robust APIs, microservices, and integration components while applying engineering best practices for enterprise-grade applications.

Responsibilities include server-side logic, API maintenance, performance tuning, implementing microservices with Node.js and Java Spring Boot, securing authentication and data, collaborating with front-end, DevOps, and QA, and

Qualifications

• Excellent backend development capabilities for large-scale apps.
• Strong knowledge of API design and integration patterns.
• Experience with microservices architectures and containerization is a plus.

Responsibilities

• Develop and maintain server-side logic, APIs, and integration services for large-scale applications.
• Optimize application performance, scalability, and reliability through code quality and database tuning.
• Implement microservices architecture using modern frameworks (e.g., Node.js, Java Spring Boot).
• Integrate authentication, authorization, and data security mechanisms into application backbones.
• Collaborate with front-end, DevOps, and QA teams to deliver end-to-end, cloud-ready solutions.
• Troubleshoot production issues, perform root-cause analysis, and drive resolution improvements.
• Focus on continuous learning and emerging trends.

Tools

Node.js

Java Spring Boot

Job description

About this position

CBTS serves enterprise and midmarket clients in all industries across the United States and Canada. CBTS combines deep technical expertise with a full suite of flexible technology solutions--including Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, CBTS delivers comprehensive technology solutions for its clients' transformative business initiatives. For more information, please visit www.cbts.com .

OnX is a leading technology solution provider that serves businesses, healthcare organizations, and government agencies across Canada. OnX combines deep technical expertise with a full suite of flexible technology solutions—including Generative AI, Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, OnX delivers comprehensive technology solutions for its clients’ transformative business initiatives. For more information, please visit www.onx.com.

1. Role Purpose (1–3 lines): Performs the development and optimization of secure, scalable, and high-performance‑performance backend systems. Builds robust APIs, microservices, and integration components while driving engineering best practices and ensuring reliability across enterprise-grade applications.

2. Key Responsibilities:

• Develop and maintain server-side logic, APIs, and integration services for large-scale applications


• Optimize application performance, scalability, and reliability through code quality and database tuning.


• Implement microservices architecture using modern frameworks (e.g., Node.js, Java Spring Boot).


• Integrate authentication, authorization, and data security mechanisms into application backbones.


• Collaborate with front-end, DevOps, and QA teams to deliver end-to-end, cloud-ready solutions.


• Troubleshoot production issues, perform root-cause analysis, and drive resolution improvements.


• Focus on continuous learning and emerging trends.