Performance Engineer - IP Telephony and VoIP

Responsibilities:

As a Performance Engineer you will be responsible for -

• Work closely with management, product owners, developers and quality engineers to understand product requirements, business use cases and to design appropriate performance/scalability simulations to measure and analyze performance and obtain insights into scalability and solve potential bottlenecks.
• Participate in discussions and planning with other members of the engineering and product teams.
• Design and implement scalability, stability, stress, reliability, availability, and longevity simulations for telephony systems and voice channels using custom developed software.
• Encourage sound design principles that result in optimal code and non intrusive instrumentation.
• Champion the definition of appropriate SLIs/SLOs appropriate service monitoring.
• Mentor engineers in the organization.

Required Skills:

• Candidates having minimum of 5 years of relevant technical experience.
• Proven experience in Performance Engineering, with a focus on telephony systems and voice channels.
• Hands-on experience with tools like Wireshark, SIPp, Jitsi, or equivalent for VoIP/WebRTC testing.
• Strong understanding of IP Telephony and VoIP (e.g., SIP, RTP, WebRTC)
• Design and implement a highly configurable testing tool to evaluate the performance, scalability, and reliability of telephony solutions.
• Ability to debug complex UCaaS/CCaaS call flows (involves multiple network entities - Carrier, SBC, Voice Switch etc..) and understand system design with an eye for performance and scalability bottlenecks with an aim to optimize code.
• Ability to automate operations such as simulation execution, monitoring, analysis, and a deep desire to do it.
• Performance Engineering experiences with a distinguished track record on technically demanding projects.
• Ability to express your clear thinking in words and technical documents.
• Solid understanding of database performance, such as SQL tuning and optimization.
• Working knowledge of load generation / measurement software and concepts (e.g. JMeter, or other custom load generation software) for HTTP, REST, RPC and similar cloud systems.
• Knowledge of database tuning and administration (e.g. Oracle).
• Experience in operating system design / tuning / tools (e.g. Linux,containers).
• Experience with profiling tools like JFR, gprof, VTune, OProfile.
• Strong knowledge of C, Java, JavaScript, Python, Ruby or other programming languages.
• BS, MS in Computer Science or equivalent.

Desired Skills:

• 3+ years working on multiple releases with short cycles (3-6 months).
• Familiar with APM software.
• Domain knowledge in cloud-based telephony solutions (CPaaS/CCaaS/UCaaS) .
• Familiar with database clustering/scaling technologies (e.g. RAC, Grid, OPS).
• Familiar with cloud native architectures.