SENIOR SOFTWARE ENGINEER - Java

Happiest Minds Technologies; Dadri; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Happiest Minds Technologies is seeking a Developer for Cellular Core network in India. The role involves designing, documenting, and implementing cloud-based 5G SA home network components, with daily stand-ups to report progress and deliver tested software.

Applicants should have 3–7 years of experience, strong Java and database skills, and the ability to leverage AI-assisted coding and GenAI for research and documentation. Collaboration with the tech lead and peers is essential.

Qualifications

• 3–7 years of experience in relevant roles.
• Experience with AI-powered coding assistants and GenAI for research and documentation.
• Proficient in Java and databases (MySQL/Oracle/Cassandra/Redis).
• Excellent communication and self-motivation.

Responsibilities

• Solve Business Problems: Research solutions to solve problems and develop product.
• Leverage Cellular Expertise: Apply domain knowledge of 3GPP/Cellular to build a SaaS Core product.
• Create Design & Documentation Artifacts: Produce detailed technical designs and docs.
• Implementation: Develop network components using Java, databases, and analysis tools.
• Technical Troubleshooting: Address complex technical challenges and optimize performance.
• Adoption of New Technologies: Integrate AI-powered tools to enhance development.

Skills

Java

AI-assisted coding

Critical thinking

Communication

Self-motivated

Education

BS or higher in CS

Cellular, Database, GIT, AI Prompt & Response

Tools

MySQL

Oracle

Cassandra

Redis

Git

Spring Boot

Docker

Kubernetes

Job description

Developer - Cellular Core network

Description Design, document and implement Network Functions of a cloud-based 3GPP compliant 5G SA home network. Generate accurate schedule estimates. Provide progress updates in a daily stand up meeting, and deliver tested software in a predictable manner. Collaborate actively with the tech lead and other team members.

Key Responsibilities

• Solve Business Problems: Research solutions to solve problems and develop product
• 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). Fulfill feature acceptance criteria.
• 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 (3-7 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)
• Critical thinking
• Excellent communicator: able to effectively express ideas and concepts, in both written and spoken forms.
• Self-Motivated: Actively participate in internal discussions and demo to customers and in public events.

Desirable

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

Nice to have domain experience

• 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

Education

• BS or higher degree in Computer Science or equivalent
• Cellular, Database, GIT, AI Prompt & Response