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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

  • Design and execute test plans for RESTful APIs, Kafka message processors, and Redis-based job schedulers

  • Build and maintain automated test suites (unit, integration, functional, end-to-end)

  • Design and execute performance and load tests to validate system behavior under peak traffic, sustained load, and stress conditions

  • Establish performance baselines, define SLAs (throughput, latency, error rates), and track regressions across releases

  • Conduct soak tests to identify memory leaks, connection pool exhaustion, and resource degradation over time

  • Validate Node.js library upgrades and dependency changes across the shared library ecosystem (lantern-utils, lantern-nest-utils, lantern-logger, lantern-requester, lantern-scheduler)

  • Test containerized services in Docker and Kubernetes (EKS) environments

  • Validate CI/CD pipelines (GitLab CI) - ensure builds, tests, and deployments function correctly

  • Perform regression testing for Node.js runtime upgrades (e.g., Node 18 ? Node 24 migrations)

  • Collaborate with developers to define acceptance criteria and testability requirements

  • Monitor and validate application performance using Datadog APM (dd-trace)

  • Test Redis cluster interactions, DynamoDB operations, and Kafka consumer/producer flows

  • Identify, document, and track defects through resolution

Deliverables

  • Process Flows

  • Mentor and Knowledge transfer to client project team members

  • Participate as primary, co and/or contributing author on any and all project deliverables associated with their assigned areas of responsibility

  • Participate in data conversion and data maintenance

  • Provide best practice and industry specific solutions

  • Advise on and provide alternative (out of the box) solutions

  • Provide thought leadership as well as hands on technical configuration/development as needed.

  • Participate as a team member of the functional team

  • 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

Vacancy posted 3 days ago
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