SMF Test Engineer

FUZIXEL TECHNOLOGIES PRIVATE LIMITED; Bengaluru; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

FUZIXEL TECHNOLOGIES PRIVATE LIMITED in Bengaluru seeks an experienced SMF Test Engineer to validate 5G Core and 4G EPC network functions. You will work hands-on with SMF/PGW/SAEGW/SGW, deploy and troubleshoot in lab or production environments, and ensure end-to-end call flows are validated.

The role requires expertise in 5G Core, 4G EPC, and containerized environments, with a strong focus on test automation and RCA. Bangalore office-based position with collaboration across R&D teams.

Qualifications

• 6-10 years of relevant telecom testing experience.
• Strong hands-on experience in 4G EPC / 5G Core Packet Core testing.
• Experience with SMF or PGW/SAEGW/SGW is required.
• Strong troubleshooting and analytical skills.
• Strong focus on test automation.
• Good understanding of 3GPP specifications and telecom protocols.
• Comfortable working in a Kubernetes/containerized environment.
• Willingness to work from the Bangalore office.

Responsibilities

• Perform system testing and validation of 5G Core / 4G EPC network functions.
• Work hands-on with 5G SMF and/or 4G EPC products such as PGW, SAEGW, SGW.
• Deploy, configure, troubleshoot, and validate packet core network functions in lab or production environments.
• Perform testing in Kubernetes-based containerized environments.
• Analyze and validate end-to-end telecom call flows (session establishment, mobility, charging, policy, subscriber management).
• Analyze logs, traces, and test results; perform troubleshooting and RCA.
• Collaborate with R&D and development teams to drive defects to resolution.
• Develop and execute test automation from Day 1.
• Utilize AI tools to improve testing quality and productivity.

Skills

4G EPC / 5G Core

SMF / PGW / SAEGW / SGW

Test automation

Troubleshooting

Kubernetes

Containerized NFV

3GPP specifications

Tools

Wireshark

tcpdump

Job description

Tips: Provide a summary of the role, what success in the position looks like, and how this role fits into the organization overall.

Responsibilities

We are looking for experienced SMF Test Engineers with strong expertise in 4G EPC and 5G Core Packet Core networks. The ideal candidate should have hands-on experience in testing, deployment, configuration, troubleshooting, and validation of packet core network functions.

Key Responsibilities

• Perform system testing and validation of 5G Core / 4G EPC network functions.
• Work hands-on with 5G SMF and/or 4G EPC products such as PGW, SAEGW, and SGW.
• Deploy, configure, troubleshoot, and validate packet core network functions in lab or production environments.
• Perform testing in Kubernetes-based containerized environments.
• Analyze and validate end-to-end telecom call flows, including:
• Session establishment
• Mobility procedures
• Charging
• Policy control
• Subscriber management
• LTE, NSA, and SA scenarios
• Analyze logs, traces, and test results to identify issues and perform troubleshooting/RCA.
• Collaborate closely with R&D and development teams to drive defects/issues through resolution.
• Develop and execute test automation from Day 1.
• Utilize AI tools effectively to improve testing quality, productivity, and troubleshooting efficiency.

Required Technical Skills

Packet Core

• Strong knowledge of 4G EPC and 5G Core
• Hands-on experience with SMF and/or PGW, SAEGW, SGW

Protocols

• PFCP
• GTPv2-C
• Diameter
• SCTP
• HTTP/2
• REST APIs

Testing & Troubleshooting

• System testing and validation
• End-to-end call-flow analysis
• Log and trace analysis
• Issue troubleshooting and RCA
• Wireshark / tcpdump
• Telecom test tools for network function validation

Cloud / Containerization

• Kubernetes
• Containerized network functions

3GPP Knowledge

• 5G Core Architecture & Procedures – 3GPP TS 23.501, TS 23.502
• EPC Architecture & Procedures – 3GPP TS 23.401, TS 23.402

Candidate Profile

• 6-10 years of relevant telecom testing experience.
• Strong hands-on experience in 4G EPC / 5G Core Packet Core testing.
• Experience with SMF or PGW/SAEGW/SGW is required.
• Strong troubleshooting and analytical skills.
• Strong focus on test automation.
• Good understanding of 3GPP specifications and telecom protocols.
• Comfortable working in a Kubernetes/containerized environment.
• Willingness to work from the Bangalore office.

Preferred Experience

Candidates with experience in 5G SA/NSA, SMF testing, PFCP/GTP signaling, Kubernetes, packet analysis, and test automation will be highly relevant

[Be specific when describing each of the responsibilities. Use gender-neutral, inclusive language.]

Example: Determine and develop user requirements for systems in production, to ensure maximum usability

Qualifications

[Some qualifications you may want to include are Skills, Education, Experience, or Certifications.]

Example: Excellent verbal and written communication skills

Skills: 4g epc,smf,5g core