Ocient · 4 hours ago
Senior Software QA Engineer - Connectors & I/O Performance
United States
Full-time
Remote
Mid, Senior Level
$145K/yr - $190K/yr
4+ years expOcient is a data analytics software solutions company that enables always-on, compute-intensive analysis of complex, large-scale data. They are seeking a Senior Software QA Engineer to validate the performance and correctness of database drivers and integrations, ensuring high-quality software delivery.
AnalyticsBig DataComputerDatabase
No H1B
Responsibilities
Own end-to-end QA strategy for database connectors and integrations, including JDBC, Python drivers, Single Sign On integrations, and third-party tools including but not limited to Metabase, Tableau, and DBeaver
Design and execute functional, performance, stress, and soak tests for client-server I/O paths, network behavior, and large result-set handling
Validate query execution correctness and performance when exercised through external clients versus native SQL execution
Analyze connector-level performance regressions, including result fetching, pagination, batching, serialization/deserialization, compression, and network utilization
Develop and maintain automated test frameworks (primarily in Java and Python) for connector validation, regression coverage, and performance baselining
Design and execute benchmarks to evaluate the performance impact of different indexing strategies, including their interaction with query execution, connector-driven access patterns, and I/O behavior across representative workloads
Debug complex failures involving client drivers, networking, serialization formats, protocol mismatches, and server-side execution paths
Partner closely with Software Engineers across Connectors, Query Processing, I/O, and Storage teams to isolate root causes and validate fixes
Review execution plans, logs, metrics, and traces to assess correctness and performance impact
Act as a quality gate for connector and I/O-related features prior to release, including customer-driven fixes and escalations
Qualification
Required
4-6+ years of experience in software QA with a strong systems focus
Experience testing JDBC / Python / database drivers or client SDKs
Deep experience testing database systems, drivers, APIs, or distributed systems
Strong SQL skills and understanding of query execution, result materialization, and client-server interaction models
Experience validating I/O performance-sensitive systems, including benchmarking, regression detection, and workload comparison
Proficiency in Java and Python for test automation, data validation, and performance tooling
Comfortable working in Linux environments, reading logs, using command-line tools, and debugging failures across system boundaries
Strong analytical skills with the ability to own ambiguous, cross-component problems and drive them to resolution
Preferred
Significant experience developing test applications for Database APIs, Integrations, and Drivers, particularly those interfacing with the JDBC or ODBC API
Experience developing and maintaining test applications for SSO integrations such as Okta/EntraID/Google
Experience testing or validating integrations with Apache Spark, distributed compute engines, or downstream analytics frameworks that interact with databases via JDBC or custom connectors
Familiarity with networking concepts (latency, throughput, batching, backpressure, serialization costs)
Experience validating large result sets, streaming queries, pagination, and memory-sensitive I/O paths
Experience benchmarking or validating indexing strategies, access paths, and data layout choices in analytical or distributed database systems
Exposure to distributed database internals, query plans, execution pipelines, or storage engines
Ability to reason about CPU, memory, and I/O tradeoffs when diagnosing performance issues
A proactive mindset — comfortable questioning assumptions, proposing new test strategies, and preventing regressions
Strong written and verbal communication skills, especially when explaining complex failures to engineering and product teams
Desire to work in a fast-paced startup environment with high ownership and impact
Company
Ocient
Ocient is a hyper-scale data analytics company that allows organizations to unlock value by analyzing petabyte to exabyte scale data sets.
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
$156.5MKey Investors
OCA VenturesTechNexus Venture Collaborative
2025-04-22Series B· $42.1M
2025-04-01Debt Financing
2024-03-11Series B· $49.4M
Leadership Team
Joe Jablonski
Co-Founder; Chief Product Officer
Bill McCarthy
Chief Operating Officer
Recent News
Seattle TechFlash
2025-06-22
2025-06-22
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