Graduate Engineer Trainee

Jio’s interview process typically begins with a timed online assessment focusing on aptitude and basic networking concepts. Successful candidates move to a technical interview where interviewers probe core network architecture, signalling protocols, and troubleshooting scenarios. The final HR round assesses cultural fit, communication skills, and career goals. Overall difficulty is moderate; thorough preparation on LTE/EPC and strong problem‑solving skills are key.

Jio promotes a performance‑driven culture with a strong emphasis on learning and innovation. Employees enjoy a mix of collaborative projects, mentorship programs, and a balanced work‑life environment that encourages personal growth.

B.E. / B.Tech in Electronics, Telecommunication, Computer Science or related branch; Minimum 60% aggregate (or CGPA 6.0/10); Fresh graduate of 2025, 2026 or 2027 batch; No active backlogs at the time of joining; Strong academic record and willingness to learn.

Round 1: Online aptitude and technical test → Round 2: Technical interview (design, troubleshooting, protocol questions) → Round 3: HR interview (fitment, communication, career aspirations)

Jio, a flagship brand of Reliance Industries, has revolutionized the Indian telecom landscape since its launch in 2016. With a subscriber base crossing 450 million, Jio offers a hyper‑connected ecosystem that spans mobile broadband, fiber, digital services, and enterprise solutions. The company’s relentless focus on technology innovation, network modernization, and customer‑centric services makes it one of the most attractive workplaces for fresh engineering talent in India. As a Core Network Architect (Fresher) in Jio’s Core Network team, you will be part of a high‑impact group responsible for designing, operating, and evolving the backbone that powers 4G LTE, 3G, and legacy 2G services across the country. The role offers a unique blend of hands‑on operational exposure and strategic design responsibilities, allowing you to grow from a junior engineer to a senior architect in a short span. **Key Responsibilities** 1. Assist in the design and documentation of core network architecture supporting 4G, 3G, and 2G services. 2. Collaborate with device and product teams to gather and finalize requirements for roaming and multi‑technology support. 3. Participate in day‑to‑day operations of 4G, 3G and 2G core networks, ensuring high availability. 4. Monitor core KPIs, service parameters, and generate performance reports. 5. Support subscriber provisioning workflows and validate end‑to‑end service activation. 6. Verify authentication (AAA) and charging (OCS/OFCS) systems for accuracy and compliance. 7. Conduct interconnect and roaming test scenarios, documenting outcomes. 8. Analyze call flow and signalling anomalies, providing root‑cause analysis. 9. Troubleshoot core alarms, outages, and coordinate rapid resolution with cross‑functional teams. 10. Maintain up‑to‑date configuration documentation and support network upgrades and new node roll‑outs. **Tech Stack**: LTE EPC, EPC components (MME, SGW, PGW), 3G/2G core (MSC, VLR, HLR), SS7, SIP, Diameter, IP/MPLS, Linux, Python/Perl scripting, network monitoring tools (Nagios, Zabbix). **Growth Path**: Starting as a Junior Core Engineer, you can progress to Senior Engineer, Lead Architect, and eventually to Network Solutions Architect or Manager – each step accompanied by increased responsibility, mentorship opportunities, and exposure to cutting‑edge telecom technologies. **Why Join Jio?** Jio offers a vibrant, fast‑paced environment where fresh talent is trusted with real responsibilities early on. Employees benefit from continuous learning programs, exposure to large‑scale network deployments, and a culture that rewards innovation and collaboration. The company’s strong financial backing, aggressive expansion plans, and commitment to digital transformation make it an ideal launchpad for a career in telecom engineering.