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# Backend API Developer

- **Company:** PROLIM Global Corporation
- **Location:** Chicago, IL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Spring Security, Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Application Performance Management, Unit Testing, Microsoft Azure, Cloud Computing, Cloud Engineering, Code Review, Databases, Continuous Integration, Database Queries, Linux, DevOps, Elasticsearch, Github, Monitoring of Systems, Junit, PostgreSQL, Enterprise Messaging Systems, MongoDB, MySQL, Network Administration, OAuth, Oracle (Applications), Systems Development Life Cycle, Redis, Mockito, Prometheus, Swagger, JSON Web Token, Software Engineering, Openapi, Spring Cloud, Grafana, Spring-boot, Reliability of Systems, Backend, Git, Event Driven Architecture, Information Technology, Cassandra, Apache Kafka, OSS/BSS, Restful APIs, Docker, Jenkins, Web Api, Microservices
- **Published:** October 30, 2026
- **Apply:** https://www.careerbuilder.com/job-details/backend-api-developer-chicago-il--89e97b0e-80b0-45ec-85cb-e2a19edc3ace

## About the Role

Application Programming Interface (API), Application Programming Interface (API), Java, Microservices, Software Engineering, Scalable System Development, REST (Representational State Transfer), Cloud Applications, Agile Programming Methodologies, Cross-Functional, We are seeking a highly motivated Backend API Developer with strong experience in Java, Spring Boot, Microservices, and REST APIs to join our engineering team. The ideal candidate will design and develop scalable backend services that support telecom platforms and cloud-native applications., * 5+ years of Backend Development experience - (Telecome Experience madnatory)

 * Strong experience with Java 11/17
 * Hands-on experience with Spring Boot
 * Experience developing RESTful APIs
 * Strong knowledge of Microservices Architecture
 * Experience with Spring Security, OAuth2, and JWT
 * Database experience with PostgreSQL, MySQL, Oracle, or MongoDB
 * Experience with Apache Kafka or other messaging platforms
 * Experience using Docker and Kubernetes
 * Git version control
 * CI/CD using Jenkins, GitHub Actions, or Azure DevOps
 * Strong SQL skills
 * Experience working in Agile/Scrum environments

Preferred Skills

 * Telecom industry experience (OSS/BSS, Network Management, Provisioning)
 * Cloud platforms (AWS, Azure, or GCP)
 * Spring Cloud
 * OpenAPI/Swagger
 * Redis
 * Cassandra
 * Elasticsearch
 * Monitoring tools (Grafana, Prometheus, ELK)
 * Linux environment
 * Unit testing using JUnit and Mockito, * Bachelor's degree in Computer Science, Engineering, or a related field.
 * 5+ years of Java Backend Development experience.
 * Strong analytical and problem-solving skills.
 * Excellent communication and teamwork skills.

Nice to Have

 * Telecom domain experience
 * OSS/BSS platforms
 * 5G or Network Management exposure
 * Cloud-native application development
 * Event-driven architecture using Kafka

## Description

Backend API Developer (Java/Spring Boot/Microservices), You will work with cross-functional teams to build secure, high-performance APIs and distributed backend systems while following Agile development practices., * Design and develop scalable backend APIs using Java and Spring Boot.

 * Build RESTful services and microservices.
 * Develop secure, reusable, and maintainable backend components.
 * Integrate APIs with databases and external systems.
 * Optimize application performance and scalability.
 * Implement authentication and authorization mechanisms.
 * Participate in code reviews and Agile ceremonies.
 * Troubleshoot production issues and improve system reliability.
 * Collaborate with architects, QA engineers, DevOps teams, and product stakeholders.