QA Tester- Senior

Please Contact:  To discuss this amazing opportunity, reach out to our Talent Acquisition Specialist Sinchan Chakraborty at email address  Sinchan Chakraborty  can be reached on # (630) 576-9024.

We have Contract role QA Tester- Senior for client at Denver, CO. Please let me know if you or any of your friends would be interested in this position.

Position Details:

QA Tester- Senior- Denver, CO

Location                            : Denver, CO 80201 | Onsite | Contract to Hire

Project Duration           : 4 months

Pay Rate                            : $50/hour on W2

Job 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.

To discuss this amazing opportunity, reach out to our Talent Acquisition Specialist Sinchan Chakraborty at email address  Sinchan Chakraborty  can be reached on # (630) 576-9024.

About generis tek: generis tek is a boutique it/professional staffing based in Chicago land. We offer both contingent labor & permanent placement services to several fortune 500 clients nationwide. Our philosophy is based on delivering long-term value and build lasting relationships with our clients, consultants and employees. Our fundamental success lies in understanding our clients’ specific needs and working very closely with our consultants to create a right fit for both sides. We aspire to be our client has most trusted business partner.