
Shohei Chiyojima
Software Engineer in Test @ PERSOL CAREER CO., LTD.
About
I'm a QA / SET Engineer with 7+ years of experience in software testing, quality management, and automation. I support test planning, execution, and quality improvement initiatives for large-scale enterprise projects involving global teams.My technical focus is on Test Automation using Playwright / Typescript, integrated with CI.I also leverage tools such as JIRA, Confluence to improve visibility and collaboration across QA and development teams.Beyond technical skills, I take pride in my communication and leadership abilities.I've led test planning, created quality reports, and analyzed defects using JSTQB-based classification, identifying that over 80% of UAT defects originated from earlier test phases — insights that helped improve our team’s development process.I also facilitate discussions between project managers and engineers to align quality goals and team expectations.Before entering the IT industry, I worked in product design and manufacturing as a shoemaker, an experience that strengthened my craftsmanship mindset and adaptability.That foundation now fuels my passion for building quality software through precision and collaboration.< Key Strengths >✅Test Automation (Playwright, Python, pytest)✅ Functional / Scenario / Manual Testing✅ Quality reporting and improvement proposals✅ Leadership and cross-team communication< Certifications & Achievements >✅ JSTQB Foundation Level (Dec 2022)✅ Certified Test Designer / PMO Associate (SHIFT Internal)✅ Credo Embodiment Award (SHIFT Internal)✅ CEFR B2 (English Speaking & Writing)< Portfolio >✅ Notion (Quality Improvement Report available upon request)
Japan
Yokohama
Information Technology & Services
Test Automation, Model Context Protocol (MCP), Postman API, REST APIs, ReportPortal, TypeScript, GitHub, JavaScript, Cucumber, Python (Programming Language), Jenkins, Unit Testing, JUnit, Bitbucket, UAT, Playwright, UI Test Automation, QA Automation, Redmine, Atlassian Confluence
Experience

Software Engineer in Test
Tokyo, Japan
📌 Key Responsibilities ✅ Designed and maintained E2E test automation using Playwright / TypeScript ✅ Improved test reliability and maintainability in CI environments 📌 Project Overview E2E test automation for a large-scale job search and recruitment web platform, covering critical user journeys such as authentication, job browsing, and applications. 🛠️ Technologies & Tools TypeScript, Playwright, GitHub Actions 🏆 Achievements ✅ Reduced CI execution time by ~60% by refactoring 100+ test cases to reuse authentication state via storageState(function of playwright) (28 min → 11 min) ✅ Reviewed and analyzed 90 skipped tests, clarifying causes of skip and defining resolution strategies

QA Automation Engineer
Tokyo, Japan
📌 Key Responsibilities ✅ Designed and implemented test automation scenarios using Playwright / Python ✅ Created Jenkins pipelines for scheduled test execution ✅ Integrated Jenkins with Bitbucket to automatically check out the latest test code before execution 📌 Project Overview UAT phase regression test automation for a mobile line provisioning system 🛠️ Technologies & Tools Python, Playwright, pytest, Jenkins, Bitbucket 🏆 Achievements ✅ Automated 2 major scenarios (approx. 70 test cases, equivalent to 2 man-days of manual testing) ✅ Reduced test data creation time by 60% (from 10 minutes to 3 minutes per entry) ✅ Built a Jenkins CI pipeline for periodic execution and integrated version control updates via Bitbucket checkout automation

Quality Assurance Lead
Tokyo, Japan
📌 Key Responsibilities ✅ Creating test plans ✅ Creating quality reports ✅ Supporting the entire UAT team ✅ Reporting test progress in English to overseas development members (meetings, emails) ✅ Promoting quality improvement ✅ Managing the progress of an automation tool project to support customer operations 📌 Project Overview UAT for a mobile line provisioning system 🛠️ Technologies & Tools Confluence, JIRA 🏆 Achievements ✅ Improved the bug occurrence rate for the specific function by proposing and implementing improvements, reducing the rate to 1/47 ✅ Agreed on Root Cause Analysis methods with the foreign test manager (5 Whys) ✅ Received praise in client surveys, being named specifically for contributions to UAT work

Senior Quality Assurance Engineer
Tokyo, Japan
📌 Key Responsibilities ✅ Reviewing functional test designs ✅ Designing and reviewing scenario tests 📌 Project Overview UAT for a mobile line provisioning system 🛠️ Technologies & Tools Confluence, JIRA 🏆 Achievements ✅ Create the test plan of UAT ✅ Completed approximately 20,000 test items for the major functional addition release as PL ✅ Managed 150 raised bugs for the major functional addition release ✅ Created quality reports ✅ Contributed to reducing bug ticket creation time by 50% by creating a template (30 minutes to 15 minutes)

Quality Assurance Engineer
日本 東京都
📌 Key Responsibilities ✅ Designing functional tests ✅ Designing scenario tests ✅ Executing scenario tests ✅ Explaining the implementation scenarios to the client 📌 Project Overview UAT for a mobile line provisioning system 🛠️ Technologies & Tools Confluence, JIRA 🏆 Achievements ✅ Executed UAT for the initial system release ✅ Contributed to accurate test execution by creating procedures for switching to stub mode and double-checking postman execution within the team ✅ Detected 30 improvement points during the pre-review of test design documents ✅ Designed 500 functional test items and 300 scenario test items ✅ Raised 9 usability improvement comments during test execution ✅ Proposed and independently executed a strengthened test for the account creation function, detecting 24 bugs and contributing to pre-release quality improvement ✅ Proposed and facilitated a re-execution of UT for the report function, leading to quality improvement ✅ Improved the process by formulating and sharing bug ticket status update rules with development

Quality Department Specialist
日本 東京都
📌 Key Responsibilities ✅ Creating quality reports ✅ Requesting impact range confirmation from development vendors when bugs occur ✅ Improving system migration quality and inspecting migration procedure manuals (950KL scale for 6 systems) 📌 Project Overview Quality assurance support for a large-scale system integration project in the waterfall development of an internet line application system 🏆 Achievements ✅ Detected 10 defects during the inspection of migration procedure manuals ✅ Completed migration without critical issues

Performance Test Engineer
日本 東京都
📌 Key Responsibilities ✅ Managing performance tests on the test day (multi-vendor development with 3 companies) ✅ Meetings with clients for test preparation ✅ Analyzing the causes of bugs (5 Whys) ✅ Creating quality reports ✅ Conducting 1-on-1 meetings with team members 📌 Project Overview Performance testing of migration tools in a large-scale system integration project for an internet line application system in waterfall development 🏆 Achievements ✅ Successfully completed work as the first leader in a project that had previously received complaints from the client ✅ Independently created quality reports using project formats ✅ Received positive feedback from vendors on the ease of testing ✅ Built trust with team members through 1-on-1 meetings, receiving comments like "I trust you"

Quality Control Specialist
日本 東京都
📌 Key Responsibilities ✅ Summarizing progress of multiple development vendors (5 companies) and creating report materials ✅ Supporting the creation of quality reports ✅ Creating test scenarios 📌 Project Overview Supporting the development project for a large-scale system integration in the waterfall development of an internet line application system 🛠️ Technologies & Tools Redmine, Excel VBA 🏆 Achievements ✅ Conducted checks on deliverables (such as design document formats), receiving praise from the client as "the best delivery work ever" ✅ Improved efficiency of issue response to development vendors using Excel VBA, halving the work time (30 minutes to 15 minutes/day)

Quality Assurance Specialist
ace corporation inc
Tokyo, Japan
📌 Key Responsibilities ✅ Pattern design using CAD ✅ Creation of shoe samples ✅ Preparation of specifications for production factories ✅ Design development discussions with OEM clients ✅ Factory inspections in China 📌 Project Overview Design and production preparation for in-house and OEM shoes 🛠️ Technologies & Tools CAD, Excel 🏆 Achievements ✅ Developed shoe production technology meeting Japanese quality standards and demanded the same quality from Chinese production factories ✅ Obtained certification demonstrating shoe upper technology ✅ Increased CAD productivity to 4 times that of the predecessor ✅ Semi-automated material ordering using Excel, reducing order creation work by over 65% per person
Shohei Chiyojima's Contact Information
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