We are looking for a General QA Engineer
About us Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City.
We are a subsidiary of Kyivstar, one of Ukraine’s largest telecom operators.
Our mission is to change lives in Ukraine and around the world by creating technological solutions and products that unleash the potential of businesses and meet users’ needs.
Over 600+ KS.Tech specialists work daily in various areas: mobile and web solutions, as well as design, development, support, and technical maintenance of high-performance systems and services.
We believe in innovations that truly bring quality changes and constantly challenge conventional approaches and solutions.
Each of us is an adherent of entrepreneurial culture, which allows us never to stop, to evolve, and to create something new.
What you will do:
Work in a cross-functional team with product managers, analysts and developers on a high-load telecom platform
Test management (plan, test scenarios design, execution, follow-up, control)
API and integration testing across microservices
Performance and load testing
Test automation and support of existing test builds
Regression testing
Testing reporting and documentation
Qualifications and experience needed:
4+ years of relevant working experience as a QA Engineer with a backend focus
Strong backend testing experience: verifying end-to-end data flow between services, databases and message brokers, not only endpoint responses
Great knowledge of automation tools and Java/TypeScript, with integration into CI pipelines
Performance testing experience: load profiles, test execution, interpreting latency, throughput and error rate
Excellent requirements analysis skills — identifying gaps and ambiguities before development starts
Experience of composing test strategies and test plans
Test design techniques knowledge
Confident knowledge of testing methodologies
SQL knowledge: complex queries with joins and aggregations, data integrity checks
Linux/UNIX command line: log analysis, basic bash
Practical skills with Git: branching, merging, code review
Experience with MOCK-SERVER or a similar tool for isolating dependencies
Knowledge of TCP, HTTP
Understanding of client-server and microservices architectures: inter-service communication, failure points, idempotency
Good knowledge of Postman, IntelliJ IDEA, Atlassian stack (Jira, Confluence, Zephyr), GitLab, Jenkins, Kibana, Grafana
Higher technical education or equivalent relevant experience
Ability to work in a fast-paced Agile environment in close collaboration with the development team
Excellent analytical skills, critical mindset
Strong communication and troubleshooting skills
English is spoken and written on the intermediate level or higher
Nice to have:
Kafka or RabbitMQ
Docker, Kubernetes
High-load systems experience
What we offer
Skills Required
- 4+ years of relevant experience as a backend-focused QA Engineer
- Strong backend testing experience across services, databases, and message brokers
- Automation experience with Java or TypeScript and CI pipeline integration
- Performance testing experience, including load profiles, latency, throughput, and error-rate analysis
- Requirements analysis and gap identification
- Experience creating test strategies and test plans
- Knowledge of test design techniques and testing methodologies
- SQL proficiency, including joins, aggregations, and data integrity checks
- Linux or UNIX command-line skills and basic Bash
- Practical Git skills, including branching, merging, and code review
- Experience with Mock Server or a similar dependency-isolation tool
- Knowledge of TCP, HTTP, client-server, and microservices architectures
- Experience with Postman, IntelliJ IDEA, Atlassian tools, GitLab, Jenkins, Kibana, and Grafana
- Higher technical education or equivalent relevant experience
- Ability to work in an Agile environment with development teams
- Strong analytical, communication, critical-thinking, and troubleshooting skills
- Intermediate or higher spoken and written English
- Telecom domain experience, including billing, charging, or provisioning
- Kafka or RabbitMQ experience
- Docker or Kubernetes experience
- Experience with high-load systems
What We Do
Kyivstar is Ukraine's largest electronic communications operator, providing a wide range of mobile and fixed-line services, including 4G, Big Data, cloud solutions, cybersecurity, and digital TV. Serving millions of subscribers, the company is a leader in the Ukrainian telecom market, committed to innovation and digital transformation while supporting society and the country through its extensive communication infrastructure and technological expertise.
