5G Core Network Engineer - APIs

MetTel is a global communications solutions provider with the most complete suite of fully managed services that focus on secure connectivity, and network and mobility services. We simplify communications and networking for business and government agencies. Our customers include many of the Fortune 500, and Gartner recognizes us as an industry leader. We have the broadest portfolio of technology and integrated partnerships, as well as our private network, which we use to create tailored solutions design, deployment, and ongoing management, driving cost savings, efficiency, innovation, and the ability to focus on core objectives.

We believe that each team member is a key to the success and sustainability of the group. In order to achieve this, we offer an environment where all professionals can grow and develop their skills and competencies, collaborate with diverse professionals, share knowledge and enjoy a rewarding career. 

MetTel is looking for a 5G Core Network Engineer - APIs to join our growing team! 

Role And Responsibilities:

• Design and develop RESTful APIs for VNFs, ensuring they are well-documented, secure, and performant. 
• eBPF will be used for deep network insights and optimizations. 
• Collaborate with network engineers, VNF vendors, and security professionals to understand Enterprise subscriber’s unique requirements. 
• Deliver 5G core network requirements, and translate them into clear and concise API specifications using Swagger or OpenAPI. 
• Implement robust API authentication, authorization, and policy enforcement. 
• Integrate VNF APIs with our existing network management platform, billing, support and other systems using appropriate protocols (e.g., JSON, YAML). 
• Develop unit and integration tests for VNF APIs, including utilizing EBPF probes for deeper observability and performance testing. 
• Maintain and update VNF APIs as VNF features evolve, new versions are deployed, and as 5G core network requirements change. 
• Document API design, usage, and troubleshooting information for developers, operations teams, and security personnel, clearly outlining integration points. 
• Stay up-to-date on emerging trends and technologies in VNF APIs, network function virtualization (NFV), eBPF applications in networking, and advancements in 5G core networks. 

Desired Qualifications:

• Minimum 3+ years of experience in API development (RESTful APIs required). 
• Strong understanding of API design principles, including HTTP methods, resource representations, data formats, and security considerations. 
• Proficiency in a modern programming language commonly used for VNF API development (e.g., Python, C, Java, Go). 
• Solid understanding of 5G core network architecture and protocols . 
• In-depth knowledge of eBPF concepts, including attaching probes, reading kernel data structures, and developing custom eBPF programs. 
• Excellent analytical and problem-solving skills. 
• Strong communication, collaboration, and interpersonal skills. 
• Ability to work independently and as part of a team. 

Additional Desirable Qualifications:

• Experience with network concepts like firewalls, routing, load balancing, and network security principles is a plus. 
• Experience with container orchestration, Kubernetes, Helm, is a plus. 
• Experience with cloud-native network architectures and containerization technologies (Docker, Kubernetes). 
• Experience with API security testing tools. 
• Familiarity with network function monitoring tools and frameworks. 
• Proven experience using eBPF for network visibility and performance optimization in production environments. 
• Understanding of SIM applet Java Card development. 
• Experience with network performance monitoring and optimization tools. 
• Experience with network security principles and best practices. 

*The salary range reflected is a good faith estimate of base pay for the primary location of the position. Our compensation reflects the cost of labor across several U.S. geographic markets, and we pay differently based on those defined markets. The U.S. pay for this position is up to $125,000 annually. Pay varies by work location and may also depend on job -related knowledge, skills, experience and abilities of the successful candidate. Your recruiter can share more about the specific salary range for the job location during the hiring process.

MetTel is an Equal Opportunity Employer and considers applicants for all positions without regard to race, color, religion or belief, sex, age, national origin, citizenship status, marital status, military/veteran status, genetic information, sexual orientation, gender identity, physical or mental disability or any other characteristic protected by applicable laws. 

To learn more about our company visit us at www.mettel.net