The Team Leader will be responsible for the administration, monitoring, optimization, and high availability of the ejabberd XMPP messaging infrastructure supporting the Sandes platform. The role also involves leading the migration of the existing End-to-End Encryption (E2EE) framework to Post-Quantum Cryptography (PQC)-based algorithms to ensure future-ready secure messaging and audio/video communications.
Key ResponsibilitiesA. ejabberd XMPP Infrastructure
- Manage, administer, and maintain ejabberd XMPP server clusters deployed in Production and Staging environments.
- Monitor health, performance, and availability of multi-node ejabberd clusters.
- Perform performance tuning, capacity planning, and load optimization based on user traffic.
- Configure clustering, federation, routing, and high availability for ejabberd deployments.
- Troubleshoot server, database, and network-related issues affecting messaging services.
- Implement monitoring, logging, alerting, backup, and disaster recovery mechanisms.
- Coordinate deployment, upgrades, patching, and configuration management of ejabberd infrastructure.
- Ensure high uptime, scalability, and security of messaging services.
B. Post-Quantum Cryptography (PQC) & Security
- Assess the existing End-to-End Encryption (E2EE) implementation used in messaging and audio/video calling.
- Design and implement migration of current cryptographic algorithms to Post-Quantum Cryptography (PQC)-safe algorithms.
- Integrate NIST-approved PQC algorithms into the existing secure communication framework.
- Evaluate cryptographic protocols for confidentiality, integrity, authentication, and forward secrecy.
- Conduct security testing, cryptographic validation, and performance benchmarking.
- Ensure compliance with cybersecurity best practices and emerging cryptographic standards.
C. Leadership & Coordination
- Lead technical activities related to messaging infrastructure and cryptographic enhancements.
- Provide technical guidance to development, DevOps, and operations teams.
- Prepare technical documentation, architecture documents, SOPs, and implementation plans.
- Coordinate with stakeholders for issue resolution, planning, and technology upgrades.
Required Technical SkillsMandatory
- Strong expertise in ejabberd XMPP Server Administration.
- Experience in XMPP protocol, clustering, routing, and high availability.
- Linux server administration (RHEL/CentOS/Ubuntu).
- Performance tuning and monitoring of distributed messaging systems.
- Knowledge of databases used with ejabberd (PostgreSQL/Mnesia).
- Experience with TLS, SSL, PKI, and secure communication protocols.
- Strong understanding of End-to-End Encryption (E2EE).
- Hands-on experience in cryptography and secure communication protocols.
Post-Quantum Cryptography
- Knowledge of Post-Quantum Cryptography (PQC).
- Experience with NIST PQC algorithms such as:
- CRYSTALS-Kyber
- CRYSTALS-Dilithium
- SPHINCS+
- Falcon (desirable)
- Understanding of cryptographic libraries such as OpenSSL, Libsodium, or equivalent.
- Experience integrating cryptographic algorithms into communication applications.
Desirable Skills
- Docker/Kubernetes.
- DevOps and CI/CD tools.
- Monitoring tools (Prometheus, Grafana, ELK, Zabbix, etc.).
- SIP/WebRTC knowledge for audio/video communication.
- Experience in secure messaging platforms.
Educational Qualification
- B.E./B.Tech/M.Tech in Computer Science, Information Technology, Electronics & Communication, Cyber Security, or equivalent.
- Relevant certifications in Linux, Networking, Cyber Security, Cryptography, or Cloud technologies will be preferred.
Pay: ₹50,000.00 - ₹70,000.00 per month
Benefits:
Experience:
- Technical Lead: 6 years (Preferred)
Work Location: In person
