work

Qingdao Haier Technology Co., Ltd

Software Development Intern | Mar. 2024 – Aug. 2024

• Utilized Redis to optimize system performance under high concurrency, reducing database visits by ~40% and minimizing overall response time.
• Designed and developed a batch-processing mechanism to minimize memory consumption.
• Optimized database query statements by eliminating complex nested queries and full table scans; added indexes to improve query performance in high-concurrency scenarios.
• Implemented a delayed double-deletion strategy for cache consistency.

Qingdao Haier Technology Co., Ltd

Software Development Intern | Jul. 2023 – Oct. 2023

• Ensured high availability of the user experience cloud platform; designed the app using SpringBoot with PostgreSQL for data storage.
• Used Profiler to identify code and performance bottlenecks; implemented algorithm optimization and reduced database access frequency.
• Leveraged Alibaba Cloud Prometheus to evaluate memory utilization patterns, identifying excessive object creation, memory leaks, and large object presence.
• Adopted Object Pool Technology for common object pre-creation; batch-processed big data to reduce memory utilization; used Bitmap to compress user data structures.

iFLYTEK Co., Ltd.

Software Development Intern | Dec. 2022 – Jan. 2023

• Developed a domain-specific ASR pipeline for hydrology and water conservancy engineering.
• Collected and processed fieldwork data; extracted key terms from technical specifications via custom text-segmentation scripts.
• Built a speech synthesis corpus using Tacotron2_CSMSC, generating multi-timbre audio and aligning text–audio pairs into training, validation, and test sets.
• Trained and evaluated multiple ASR architectures — DeepSpeech2, Transformer, Conformer, and iFLYTEK’s open-platform model — on the domain corpus.
• Achieved a 30% improvement in recognition accuracy, reaching >99% success rate on domain-specific evaluation data.