QA Tester- Senior(Hybrid)
GSK Solutions
Job Title
QA Tester- Senior (Hybrid)
Location
Denver, CO
Duration
4 months
Interview Type
Virtual / In-Person
Note
Local to Denver; local travel only/none beyond local area. The qualifying questions also indicate the candidate must have the required skills and be okay going into the office.
Description
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Design and execute test plans for RESTful APIs, Kafka message processors, and Redis-based job schedulers
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Build and maintain automated test suites (unit, integration, functional, end-to-end)
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Design and execute performance and load tests to validate system behavior under peak traffic, sustained load, and stress conditions
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Establish performance baselines, define SLAs (throughput, latency, error rates), and track regressions across releases
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Conduct soak tests to identify memory leaks, connection pool exhaustion, and resource degradation over time
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Validate Node.js library upgrades and dependency changes across the shared library ecosystem (lantern-utils, lantern-nest-utils, lantern-logger, lantern-requester, lantern-scheduler)
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Test containerized services in Docker and Kubernetes (EKS) environments
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Validate CI/CD pipelines (GitLab CI) - ensure builds, tests, and deployments function correctly
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Perform regression testing for Node.js runtime upgrades (e.g., Node 18 ? Node 24 migrations)
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Collaborate with developers to define acceptance criteria and testability requirements
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Monitor and validate application performance using Datadog APM (dd-trace)
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Test Redis cluster interactions, DynamoDB operations, and Kafka consumer/producer flows
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Identify, document, and track defects through resolution
Deliverables
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Process Flows
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Mentor and Knowledge transfer to client project team members
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Participate as primary, co and/or contributing author on any and all project deliverables associated with their assigned areas of responsibility
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Participate in data conversion and data maintenance
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Provide best practice and industry specific solutions
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Advise on and provide alternative (out of the box) solutions
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Provide thought leadership as well as hands on technical configuration/development as needed.
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Participate as a team member of the functional team
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Perform other duties as assigned.
Top Skills
S.No
Skill Requirement
1
QA Tester
2
5 10 years of QA/testing experience in backend or platform engineering
3
Hands-on experience with performance and load testing tools
4
Ability to analyze performance metrics such as P50/P95/P99 latencies, throughput, error rates, and CPU/memory utilization
5
Strong experience with API testing tools
6
Experience testing event-driven architectures and message queues
7
Familiarity with Docker, Docker Compose, and Kubernetes-based deployments
8
Experience with CI/CD pipelines
9
Comfortable reading and writing TypeScript/JavaScript
10
Experience with git workflows and branching strategies
Recruiter
Contact: Kris - View email address on us.fitly.work
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