• Product 1: Handles mobile calls, including call forwarding, rejection, and charging.
• Product 2: Handles mobile data sessions, including protocol conversion, session correlation, and network-topology protection.
• Product 3: Sends notifications to subscribers through SMS, email, push notifications, and other protocols based on incoming requests and remote-server availability.

Define and Lead the NFT Strategy

• Develop comprehensive strategies for performance, load, soak, and failover testing across all products.
• Ensure coverage for telecom-specific behaviors, including session surges, protocol latency, message bursts, and failover scenarios.

Design and Execute NFT Scenarios

• Create realistic, high-load test scenarios for mobile calls, data sessions, and notification-delivery workflows.
• Simulate complex operator environments, including network latency, bandwidth constraints, and protocol interactions.

Identify and Analyze Performance Issues

• Detect bottlenecks in production and staging environments.
• Localize issues such as high CPU load, memory leaks, locked threads, database-related problems, and network-related problems.
• Reproduce identified issues in controlled test environments.
• Collaborate with developers to resolve performance and reliability issues.

Measure and Optimize System Behavior

• Track key performance indicators, including:
  • Throughput
  • Latency
  • CPU and memory utilization
  • Garbage-collection performance
  • Database-query performance
  • Network I/O efficiency
• Provide tuning recommendations across Java, databases, operating systems, hardware, and configuration layers.

Own and Improve NFT Tooling and Automation

• Maintain and optimize the non-functional regression suite.
• Reduce execution time and improve the stability of test runs.
• Enhance observability through metrics, logs, dumps, and monitoring dashboards.

Collaborate Across Teams

• Work closely with development teams to ensure that new features meet performance expectations.
• Support pre-production certification activities with operators and cloud deployments.

Must-Have Qualifications

• Strong expertise in performance engineering, particularly for high-load, network-intensive systems.
• Hands-on experience with performance tuning and bottleneck identification in distributed or telecom-grade systems.
• Solid understanding of the OSI model and practical networking fundamentals.
• Experience with relational databases, including:
  • Indexing strategies
  • SQL tuning
  • Query optimization under load
• Strong Linux knowledge, including an understanding of how Linux uses:
  • CPU
  • Network resources
  • I/O and storage
• Experience with diagnostic tools and techniques, including:
  • tcpdump for packet capture
  • Thread dumps
  • Heap dumps
  • Java class histograms

Preferred Qualifications

• Familiarity with telecom and messaging protocols, including:
  • Diameter
  • SMTP
  • SMPP
  • CAP
  • MAP

• You will be part of a talented team working on challenging projects.
• You will have opportunities to learn about the latest industry trends.
• You will develop non-standard solutions for continuously evolving environments and standards.
• You will have opportunities for personal and professional growth.
• You will work with advanced technologies used across the industry. 

Core Competencies

• Builds valuable customer relationships
• Collaborates effectively across organizational boundaries
• Interacts respectfully with colleagues throughout the organization
• Demonstrates confidence and curiosity
• Demonstrates excellence and professionalism

Functional Competencies

• Analytical thinking and problem-solving
• Creativity and innovation
• Focus on quality
• Technological excellence 

Equal Opportunity Statement