MODULE LEAD - Cellular

Happiest Minds Technologies; Dadri; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Happiest Minds Technologies is seeking a Technical Lead for Cellular Core network to drive the development of a cloud-based 5G SA core. You will communicate with the architect daily, design detailed technical artifacts, and help shape delivery schedules.

You will also implement core network components and mentor a team of developers, ensuring quality and security across the stack. The role requires 7–12 years of experience in cellular networking, strong Java and database skills, and hands-on

Qualifications

• Experience 7–12 years in cellular core or related networking roles.
• Hands-on development of 5G SA core network components.
• Experience with Java, databases, and network analysis tools.

Responsibilities

• Solve business problems; research solutions and develop product.
• Groom backlog with product managers, engineers and architects.
• Ensure architectural alignment across system designs and components.
• Leverage cellular expertise to build cutting-edge Core SaaS product.
• Create detailed technical designs, specifications, and documentation.
• Implement network components using Java and related tools.
• Contribute to delivery schedules and meet launch deadlines.
• Mentor and oversee daily activities of other developers.
• Troubleshoot complex technical issues and optimize performance.
• Adopt and integrate AI-powered tools to improve processes.

Skills

GenAI for research

Java

Databases

Git

Critical thinking

Communication

Education

BS in Computer Science

Job description

Technical leadership role in the development of a cloud-based 3GPP compliant 5G SA core network. Communicate daily with the architect and generate detailed technical designs and documentation. Take an active role in developing delivery schedules. In addition to hands-on implementation of a number of 5G SA Network Functions, oversee and support the daily activities of other developers on the team.

Tech Lead - Cellular Core network

Technical leadership role in the development of a cloud-based 3GPP compliant 5G SA core network. Communicate daily with the architect and generate detailed technical designs and documentation. Take an active role in developing delivery schedules. In addition to hands-on implementation of a number of 5G SA Network Functions, oversee and support the daily activities of other developers on the team.

Key Responsibilities

• Solve Business Problems: Research solutions to solve problems and develop product
• Groom Backlog: Develop detailed requirements working peers such as Product managers, Network Engineers and Architects. Effectively transform product requirements into a solution backlog complete with definition of all required components and their interworking and accepttance criteria.
• Ensure Architectural Alignment: Work closely with team and stakeholders to review and refine system designs, ensuring the product?s security and network components are robust, well-integrated, with the right level of observability and the right unit-economics.
• Leverage Cellular Expertise: Leverage domain expertise in Cellular networks (3GPP standards, deployment, operations) to build a cutting-edge Celluar Core SaaS product.
• Create Design & Documentation Artifacts: Produce and maintain detailed technical designs, specifications, and documentation to guide both current development and future enhancements.
• Implementation: Directly develop and implement network components using technologies like Java, various databases, and network analysis tools (e.g., pcap, Wireshark, tcpdump).
• Schedule Planning: Actively contribute to setting and managing delivery schedules to meet launch deadlines.
• Team Oversight: Oversee and support the daily activities of other developers, including mentoring, code reviews, and troubleshooting, ensuring best practices are followed throughout the project.
• Technical Troubleshooting: Address complex technical challenges and optimize network performance.
• Adoption of New Technologies: Integrate emerging AI-powered tools and methodologies to enhance development processes.

Must have skills

Required (7-12 years)

• AI-powered coding assistants and effective prompt engineering, and use GenAI for technical research and documentation.
• Java
• Database (MySQL, Oracle, Cassandra, Redis (at least one)
• Git source control & release compliance
• Critical thinking
• Excellent communicator: able to effectively express ideas and concepts, in both written and spoken forms. Can organize and lead internal discussions and present to customers

Desirable

• Public cloud services: GCP, AWS or Azure
• Agile Scrum Master
• Spring Boot
• Docker/Containers/Kubernetes
• C/C++
• Message broker: RabbitMQ, Kafka, etc

Nice to have domain experience

Experience in some of the 3GPP Cellular Network Standards like below:

• Familiarity with 3GPP Rel 15 and later
• Cellular identifiers (ICCID, IMSI, MSISDN, IMEI)
• 2G/3G (SS7), 4G (Diameter), 5G SA (HTTP/2)
• AAA/RADIUS, SMS, SMPP
• VoLTE

API Development & Security

• Oath2
• PKI
• mTLS, SSL

IP networks: packet inspection, routing, IP allocation & assignment, subnets, CIDR specification, IPV6

Education

BS or higher degree in Computer Science or equivalent

Java, Database, GIT, AI Prompt & Response