Zhenju Kou
Verified Expert in Engineering
Software Engineer and Developer
Tokyo, Japan
Toptal member since December 14, 2023
Zhenju is a senior back-end engineer with 8+ years of experience in multiple threading processes and REST API design. His experience spans eCommerce, social, and industrial sectors, showcasing high enthusiasm, integrity, and ingenuity. Zhenju excels in fast-paced, competitive environments, demonstrating a result-oriented mindset, self-motivation, and resourcefulness. His comprehensive skill set makes him a valuable asset in any technological endeavor.
Portfolio
Experience
Availability
Preferred Environment
IntelliJ IDEA, Slack, Web, Spring, Spring Boot, Spring Cloud, Apache Kafka, Apache RocketMQ
The most amazing...
...thing I've built is a tool for processing and verifying big data, which has eight layers, each comprising millions of partitions with hundreds of objects.
Work Experience
SDE
TietoEVRY
- Constructed a development and testing ecosystem leveraging AWS, focusing on creating verified tools to ensure the suitability of all data for a multiple-user system (MUS).
- Conducted product testing using the Amazon Elastic MapReduce (EMR), Amazon EC2, and the OLP platform.
- Utilized Spark to process data and stored the processed data in the MUS service.
- Built an automated verification pipeline using GitLab's CI/CD.
SDE
Atoshi
- Achieved the goal of inviting users through various applications, demonstrating effective multi-channel user outreach.
- Reconstructed Atoshi online mall into microservices, optimizing its architecture for enhanced scalability and efficiency.
- Developed and deployed game services. Identified and resolved bugs to ensure a smooth and error-free gaming experience.
SDE
Tata Consultancy Services
- Completed the delivery by addressing the ticket demands and updating the task listing on Jira.
- Conducted testing on the stock information processing module and troubleshot to address any identified issues.
- Developed the module for the TV series Bonding and successfully executed it in the production environment.
Junior Development Engineer
Hunk Times
- Scheduled the acquisition of room type information from the supplier, handling a dataset of approximately seven million records.
- Headed a team in designing and delivering hotel order modules, demonstrating effective leadership in project execution.
- Led a team in delivering a Notice module that sends results to the client via text messages.
- Migrated an eshop program, transforming the legacy system into a microservice architecture for enhanced scalability and efficiency.
Experience
A JSON Compare Tool
https://github.com/TomKruise/Gson-CompareEducation
Bachelor's Degree in Software Engineering
Beijing Union University - Beijing, China
Skills
Libraries/APIs
React, API Development, GSON, Vue, MyBatis, jQuery
Tools
RabbitMQ, Jira, IntelliJ IDEA, Slack, GitLab CI/CD, Jenkins, Amazon Elastic MapReduce (EMR), NGINX, Apache ZooKeeper, Azure Key Vault
Languages
Java 8, Java, Scala, Go, Solidity, GraphQL, HTML, CSS, JavaScript
Storage
Data Integration, JSON, Redis Cache, MySQL, LokiJS, Elasticsearch, MariaDB, PostgreSQL, MongoDB, Alibaba Cloud, SQL Server 7, Data Synchronization
Frameworks
Spring, Spring Boot, Spark, Apache Dubbo
Paradigms
Agile, Testing, ETL
Platforms
Apache Kafka, Apache RocketMQ, Azure, Amazon Web Services (AWS), Oracle, Web, Amazon EC2, Docker, Kubernetes
Other
Back-end, APIs, Spring Cloud, Full-stack, CI/CD Pipelines, Webex, English, Ethernet, Web3, Apollo, Architecture
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