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Software Diagnostics & Performance Test Engineer

SOTI
Kochi, IND
Full-time
Mid · 5+ years experience
Onsite
Discovered 6 days ago

Full Job Posting

What you will 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.
  • Investigate performance degradation, scalability limitations, resource exhaustion, latency spikes, and throughput bottlenecks.
  • Create meaningful Performance Test Cases based on product architecture, customer workflows, expected load patterns, scalability goals, and known risk areas.
  • Review Performance Test Cases created by other engineers to ensure coverage, clarity, workload relevance, data validity, and alignment with product behavior.
  • Execute Performance Test Cases, analyze results, identify bottlenecks or regressions, and communicate findings with clear evidence and recommended actions.
  • Correlate evidence across multiple components of distributed systems.
  • Work with developers to identify the actual root cause rather than simply identifying the component where the symptom appeared.
  • Clearly communicate technical findings, evidence, root cause, impact, and recommended corrective actions.
  • Build and maintain diagnostic knowledge, troubleshooting methodologies, and internal technical documentation.
  • Mentor other engineers in systematic debugging and root-cause analysis.
  • Must-have qualifications
  • Technical
  • 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.
  • Ability to interpret performance test results, compare them with baselines, identify regressions, and connect findings back to product behavior or code-level causes.
  • Ability to formulate hypotheses and systematically validate them with evidence.
  • Behavioral
  • Exceptional curiosity about how software systems work.
  • Strong interest in learning the product deeply rather than treating testing as a black-box activity.
  • Strong analytical and problem-solving skills.
  • Comfortable working with incomplete or ambiguous information.
  • Willingness to challenge assumptions.
  • Persistence when the first explanation isn't the real root cause.
  • Ability to communicate complex technical findings clearly.
  • Comfortable collaborating with developers without simply handing problems back to them.
  • Strong ownership of difficult investigations
  • #LI-AS2
  • If you want to bring your ideas to life, apply at SOTI today.

Qualifications

  • Experience with application profiling and/or performance analysis.

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