Дмитро

Dmytro Gordeev
Junior QA / QC Tester · Java background
Phone: [відкрити контакти](див. вище в блоці «контактна інформація») | Email: [відкрити контакти](див. вище в блоці «контактна інформація») | Telegram: t.me/guudducko
Kyiv · available for office / hybrid work
GitHub: github.com/kuum-oss | Portfolio: kuum-oss.github.io/kuum-oss_web
SUMMARY
Junior QA candidate in Kyiv, ready to work from the office. I test how systems behave in bad conditions: network faults, outages, duplicate messages, load spikes. I have worked in a team of 5 with Jira and sprints, and I know how to investigate a bug and explain it to developers. English B2.
WHAT I BRING TO THIS ROLE
• Testing under failure and network conditions: chaos experiments, fault injection (Toxiproxy), load profiles (Gatling), retry and fallback checks
• Issue investigation: production bugs fixed under deadlines; failure paths covered with integration tests on real services
• Teamwork and communication: team of 5, Jira, sprint planning, retrospectives, regular code reviews from senior developers
• Documentation: every project described on a public portfolio site with architecture and test results
• Process: CI with GitHub Actions on Linux, coverage with JaCoCo, static analysis with SonarCloud
SKILLS
• Testing: JUnit 5, Mockito, Testcontainers, REST/API testing (Postman), JaCoCo, ArchUnit
• Network and protocols: REST, gRPC, mTLS, JWT, OkHttp (retry, rate limits), Toxiproxy
• Environment: Linux, Bash, Docker, Docker Compose, Git, Jira, GitHub Actions
• Monitoring and performance: Gatling, JMH, Prometheus, Grafana, OpenTelemetry (basic)
• Development: Java 25, Kotlin, Spring Boot, PostgreSQL, MySQL, Redis, Kafka, RabbitMQ
EXPERIENCE
Backend Developer e-commerce startup, marketplace for local sellers · NDA
• Delivered backend modules end-to-end: product catalog with search, cart with sessions, payment provider integration.
• Worked in a team of 5: Jira, weekly syncs, sprint planning, estimation, retrospectives.
• Investigated and fixed production bugs under deadlines; adapted to mid-sprint requirement changes.
PROJECTS
• sol — load and chaos testing for a Spring Boot service: JMH, 5 Gatling profiles, Circuit Breaker, Toxiproxy, Grafana. github.com/kuum-oss/sol
• fou — event-driven notification service: DLQ, retries, idempotent consumer, 5 integration tests on real containers, 0 mocks. github.com/kuum-oss/fou
• orbit — IoT monitoring platform: gRPC streaming, Kafka, mTLS, 75 infrastructure integration tests. github.com/kuum-oss/orbit
• Vault — fintech microservices platform, 8 services, JWT/JWE auth, TOTP 2FA (in development). github.com/kuum-oss/Vault
EDUCATION AND LANGUAGES
• КНЕУ (Kyiv National Economic University) — Computer Science (specialty 121), 3rd year. Courses: CS50 (Harvard), Oxford, risk management.
• Ukrainian — native. English — B2. Age 18, no deferment required.