SMS VAS Engineer at Gemini Engineering

Job Details 

Skills & Qualifications

• Experience working with SMPP protocol and SMS gateways.
• Knowledge of telecommunications protocols, messaging flows, and SMSC integration.
• Good knowledge of VPN technologies (IKE/IPsec, SSL, WireGuard) and security applications in Linux systems.
• Experience with Linux environments and basic scripting (Bash, Shell, or perl/Python).
• Experience in API development and integration (RESTful APIs, JSON, XML, SOAP).
• Strong troubleshooting skills with experience using Wireshark, Postman, or similar tools.
• Familiarity with database technology such as MySQL, PostgreSQL, MongoDB, etc.
• Strong project and time management skills
• Ability to work independently or with a group.
• Fast learner, adept at managing multiple high-priority projects with excellent problem-solving skills
• Excellent written and verbal communication skills
• Experience with MS office suite

Key Responsibilities

• Design, implement, and maintain SMPP-based SMS gateways for high-volume messaging.
• Develop and integrate APIs (REST/SOAP) for SMS delivery, reporting, and analytics.
• Monitor and troubleshoot SMPP connections, ensuring minimal downtime and optimal performance.
• Work with telecom providers and customers to establish and manage SMPP binds.
• Analyse logs and debug messaging failures, latency, and delivery issues.
• Optimise SMS routing and pricing by working with multiple vendors and operators.
• Develop scripts and automation tools to streamline messaging workflows.
• Rapidly become acquainted with our current Aggregator Platform by collaborating with our Tech partners.
• Configuring different VPN tunnels, troubleshooting VPN/networking problems in active deployments
• Working knowledge of TCP/IP stack and basic networking protocols, understanding on firewall policies, routing protocols, virtual interfaces, and user authentication protocols.
• Familiar with programming in both user and kernel space traffic flow path. Prior experience on performance tuning for VPN traffic throughout is a plus.
• Knowledge of gateways, firewalls, and routers
• Knowledge of TCP/IP addressing, routing, and troubleshooting
• Installation and configuration of mail services, firewalls, and networks
• Seeing through a project from conception to finished product.