Tech Lead – Cellular Core Network

Location: Gurgaon / Noida/ Bangalore (Hybrid: 3 days per week from Office)
Education: BS or higher in Computer Science or equivalent

Role Overview

Lead the technical design and development of a cloud-based, 3GPP‑compliant 5G SA Core Network. Collaborate closely with architects, guide developers, and contribute hands‑on to implementing key network functions.

Key Responsibilities

• Technical Leadership: Design, document, and implement components of a 5G SA Core Network using Java and relevant databases.
• Backlog & Requirements: Work with Product, Network, and Architecture teams to translate requirements into detailed user stories, backlog items, and acceptance criteria.
• Architecture Alignment: Ensure designs meet security, observability, and performance goals; drive adherence to best practices.
• Hands-on Implementation: Develop network components; use tools like Wireshark, tcpdump, and pcap for analysis.
• Scheduling: Help plan and manage delivery timelines.
• Team Oversight: Mentor developers, conduct code reviews, and troubleshoot complex issues.
• Technical Problem-Solving: Optimize network performance and resolve advanced engineering challenges.
• Innovation: Leverage AI tools (GenAI) for coding, research, and documentation.

Must‑Have Skills (7–12 years)

• Proficiency with Java, C/C++
• Experience with at least one database: MySQL, Oracle, Cassandra, Redis
• Strong skills in AI/GenAI coding assistants & prompt engineering
• Git version control and release processes
• Critical thinking and excellent communication skills (written & verbal)

Desirable Skills

• Public Cloud (AWS / Azure / GCP)
• Agile Scrum practices
• Spring Boot
• Docker, Containers, Kubernetes
• C/C++
• Message brokers: RabbitMQ, Kafka

Nice-to-Have Domain Expertise (3GPP/Core Network)

• 3GPP Rel‑15+
• Cellular IDs: ICCID, IMSI, MSISDN, IMEI
• SS7, Diameter, 5G SA (HTTP/2)
• AAA/RADIUS, SMS/SMPP, VoLTE
• API Security: OAuth2, PKI, mTLS/SSL
• IP Networking: Packet inspection, routing, subnets, CIDR, IPv6