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I am a highly experienced QA Engineer with over 9 years in Quality Assurance and telecommunications, currently driving QA for Rakuten LINK application across Android, iOS, and Desktop at Aillumission Co., Ltd. I bring a strong foundation from RF Drive Test engineering, data center management, and site engineering, which gives me a holistic view of network infrastructure and application quality. I am proficient in Agile methodologies, lead a QA team of five, collaborate closely with automation and development teams to ensure alignment with business requirements, and continually monitor KPIs to optimize user experience. I am actively learning Japanese (planning to take JLPT N4 in December 2025) and hold a valid Japanese driving license, with a passion for traveling and exploring Japan by car.…I am a highly experienced QA Engineer with over 9 years in Quality Assurance and telecommunications, currently driving QA for Rakuten LINK application across Android, iOS, and Desktop at Aillumission Co., Ltd. I bring a strong foundation from RF Drive Test engineering, data center management, and site engineering, which gives me a holistic view of network infrastructure and application quality. I am proficient in Agile methodologies, lead a QA team of five, collaborate closely with automation and development teams to ensure alignment with business requirements, and continually monitor KPIs to optimize user experience. I am actively learning Japanese (planning to take JLPT N4 in December 2025) and hold a valid Japanese driving license, with a passion for traveling and exploring Japan by car.

Mian Usman

QA Engineer, AI Engineer, Data Scientist, +2

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I am a highly experienced QA Engineer with over 9 years in Quality Assurance and telecommunications, currently driving QA for Rakuten LINK application across Android, iOS, and Desktop at Aillumission Co., Ltd. I bring a strong foundation from RF Drive Test engineering, data center management, and site engineering, which gives me a holistic view of network infrastructure and application quality. I am proficient in Agile methodologies, lead a QA team of five, collaborate closely with automation and development teams to ensure alignment with business requirements, and continually monitor KPIs to optimize user experience. I am actively learning Japanese (planning to take JLPT N4 in December 2025) and hold a valid Japanese driving license, with a passion for traveling and exploring Japan by car.…I am a highly experienced QA Engineer with over 9 years in Quality Assurance and telecommunications, currently driving QA for Rakuten LINK application across Android, iOS, and Desktop at Aillumission Co., Ltd. I bring a strong foundation from RF Drive Test engineering, data center management, and site engineering, which gives me a holistic view of network infrastructure and application quality. I am proficient in Agile methodologies, lead a QA team of five, collaborate closely with automation and development teams to ensure alignment with business requirements, and continually monitor KPIs to optimize user experience. I am actively learning Japanese (planning to take JLPT N4 in December 2025) and hold a valid Japanese driving license, with a passion for traveling and exploring Japan by car.

Available to hire

I am a highly experienced QA Engineer with over 9 years in Quality Assurance and telecommunications, currently driving QA for Rakuten LINK application across Android, iOS, and Desktop at Aillumission Co., Ltd. I bring a strong foundation from RF Drive Test engineering, data center management, and site engineering, which gives me a holistic view of network infrastructure and application quality.

I am proficient in Agile methodologies, lead a QA team of five, collaborate closely with automation and development teams to ensure alignment with business requirements, and continually monitor KPIs to optimize user experience. I am actively learning Japanese (planning to take JLPT N4 in December 2025) and hold a valid Japanese driving license, with a passion for traveling and exploring Japan by car.

Skills

Experience Level

Expert

Expert

Expert

Expert

Language

Japanese

Beginner

English

Advanced

Work Experience

Quality Assurance Engineer at Aillumission Co, Ltd (Working for Rakuten Project)

May 1, 2020 - Present

End-to-end QA process design and implementation; test case creation for functional and regression testing; defect density and open defect tracking; initial log analysis; team mentoring (5 members); cross-functional collaboration with automation and development teams; KPI monitoring; Jira/Confluence used for planning and progress tracking; release readiness criteria defined.

RF Test Engineer at Avinton KK. (Working for Nokia on Rakuten VoLTE Project)

October 8, 2019 - March 31, 2020

Drive testing for Rakuten Mobile VoLTE/RCS networks; implement test cases to record network performance; cluster drives for performance and coverage; on-site issue reporting; log collection using MO-III Accuver kit; X-Call MO for benchmarking; long/short VoLTE throughput scenarios.

Site Engineer at ZTE (Data Center)

August 1, 2016 - September 30, 2019

Experience with OTDR testing and configuration; reseating or replacing components; equipment dispatch for repair; data center hardware management including routing/switching; LSPM/VLM tools; power management (AC/DC); installation, labeling, and inventory of equipment.

Quality Assurance Engineer at Aillumission Co., Ltd (Rakuten Project)

May 1, 2020 - Present

End-to-end QA process design and implementation, test case creation and execution for functional and regression testing, defect tracking and reporting, and team leadership of 5 QA members. Collaborated cross-functionally with automation and development teams to ensure conformity to business requirements. Monitored KPIs and release readiness.

RF Test Engineer at Avinton KK (Nokia on Rakuten VoLTE Project)

October 8, 2019 - March 31, 2020

Drive tests for Rakuten Mobile’s VoLTE and RCS networks; implemented test cases using Net Velocity and XCAL; performed cluster drives to test performance and coverage; reported on-site network issues; acquired logs for benchmarking with MO-III Accuver kit and X-Call Solo kits for throughput scenarios.