Senior Software Engineerwith 7+ years of experience developing web/mobile applications in several industries like health care, e-commerce, B2B SaaS, and etc. Expertise in all phases of software development lifecycle focusing on high-quality, scalable and efficient solutions that meet the needs of customers and stakeholders. Finding new opportunities to grow myself with a company that has innovative ideas, challenging projects, and great team culture. --- **Employment and project experience** **Senior Software Engineer** WhatNot. _September 2020 - April 2024_ **Software Engineer** Capgemini. _April 2018 - August 2020_ **Software Developer** Wood Networks. _September 2017 - March 2018_

williamaraki

Senior Software Engineerwith 7+ years of experience developing web/mobile applications in several industries like health care, e-commerce, B2B SaaS, and etc. Expertise in all phases of software development lifecycle focusing on high-quality, scalable and efficient solutions that meet the needs of customers and stakeholders. Finding new opportunities to grow myself with a company that has innovative ideas, challenging projects, and great team culture. --- **Employment and project experience** **Senior Software Engineer** WhatNot. _September 2020 - April 2024_ **Software Engineer** Capgemini. _April 2018 - August 2020_ **Software Developer** Wood Networks. _September 2017 - March 2018_

Available to hire

Senior Software Engineerwith 7+ years of experience

developing web/mobile applications in several industries like health care, e-commerce, B2B SaaS, and etc. Expertise in all phases of software development lifecycle focusing on high-quality, scalable and efficient solutions that meet the needs of customers and stakeholders. Finding new opportunities to grow myself with a company that has innovative ideas, challenging projects, and great team culture.


Employment and project experience

Senior Software Engineer WhatNot.
September 2020 - April 2024

Software Engineer Capgemini.
April 2018 - August 2020

Software Developer Wood Networks.
September 2017 - March 2018

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Experience Level

Docker
Expert
TypeScript
Expert
React JS
Expert
Python
Expert
JavaScript
Expert
GraphQL
Expert
Github
Expert
AWS
Expert
PostgreSQL
Expert
Express
Expert
MySQL
Expert
PHP
Expert
Go
Expert
DynamoDB
Expert
MongoDB
Expert
Flutter
Expert
Laravel
Intermediate
Kubernetes
Intermediate
Snowflake
Intermediate
Redis
Intermediate
Figma
Intermediate
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Language

English
Fluent
Japanese
Fluent
Chinese
Advanced

Education

Bachelor of Science at University of Dallas
April 1, 2014 - June 30, 2017

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Retail, Travel & Hospitality
    uniE613 B2B ecommerce SaaS platform, WhatNot
    •Spearheaded the successful launch of a microservice-based SaaS Platform, developing a comprehensive launch strategy •Introduced DDD(Domain Driven Design) principles to model complex business domains, resulting in a significant reduction in code complexity and improved maintainability •Implemented Event-Driven Architecture with AWS EC2, SNS, and SQS, improving system scalability and responsiveness •Migrated PHP monolithic application to microservice-based architecture with Node.js, gRPC, and PostgreSQL, resulting in improved system reliability and scalability •Conducted indexing and caching techniques to optimize database operations and reduce server load, resulting in a more responsive and reliable system •Improved the scalability and resilience of data pipeline migrating from Microsoft SQL Server to AWS Snowflake and implementing Redis and Amazon EFS •Integrated the chatbot with backend systems to streamline customer interactions and improve their response time with detailed guidance •Led the development of large-scale SPA(single-page application), leveraging React and Redux-Saga to deliver efficient and scalable solutions •Optimized the website performance increasingly by implementing SSR(Server Side Rendering) with Next.js, lazy loading, code splitting, and caching mechanism •Leveraged A/B testing using Split, to provide a better user experience with an 8% improved conversion rate •Designed and implemented a comprehensive testing strategy using Jest and Playwright and planted testing part in front of the automated CI/CD pipeline with Docker and Kubernetes to automate testing and reduce the deployment time •Established the appropriate Agile development process using Scrum methodology, which improved communication and collaboration •Conducted the code review 100+ times and mentored junior developers during their onboarding process

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