Software Diagnostics & Performance Test Engineer

About this role

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Skills you'll use

What you'll do

• Investigate complex and ambiguous software failures and performance problems.
• Perform deep root-cause analysis across application, system, network, database, and infrastructure layers.
• Analyze application logs, system logs, stack traces, thread dumps, heap dumps, metrics, traces, and profiling data.
• Analyze network traffic and protocols to identify latency, connectivity, retransmission, timeout, and communication issues.
• Investigate issues that occur only under specific workloads, concurrency levels, configurations, environments, or long-running conditions.
• Understand product architecture and critical customer workflows deeply enough to reason about failure modes.
• Learn the product in depth, including core workflows, customer usage patterns, deployment models, and performance-sensitive areas.
• Design experiments to isolate variables and prove or disprove hypotheses.
• Develop diagnostic scripts, instrumentation, and small tools when necessary to accelerate investigations.
• Perform exploratory testing and deliberately challenge system assumptions to discover weaknesses and failure modes.

Who can apply

• 5+ years of software engineering, performance engineering, systems engineering, reliability engineering, production troubleshooting, or a closely related discipline, preferably in a product-based software company.
• Programming/debugging ability in at least one major language such as Java, C++, C#, Python, etc.
• Strong ability to read and understand unfamiliar application code.
• Demonstrated experience troubleshooting complex software problems.
• Strong understanding of operating-system concepts: processes, threads, memory, CPU, file I/O, sockets, synchronization, resource utilization
• Strong understanding of networking fundamentals: TCP/IP, HTTP/HTTPS, DNS, connection management, latency, timeouts, retransmissions
• Experience analyzing logs and traces across multiple components.
• Experience with application profiling and/or performance analysis.
• Hands-on experience creating, reviewing, and executing Performance Test Cases for complex software products.
• Experience diagnosing concurrency, latency, resource contention, or scalability issues.

About SOTIIND SOTI India Private

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