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劉力宇
Senior software engineer
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劉力宇

Senior software engineer
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Deep Sentinel
Chung Yuan Christian University
Taipei, Taiwan

Professional Background

  • Current status
  • Profession
    Back-end Engineer
  • Fields
    Information Services
  • Work experience
    6-10 years (6-10 years relevant)
  • Management
  • Skills
    PostgreSQL/MySQL/MSSQL
    TypeScript and ReactJS
    Clojure
    MongoDB
    Golang Backend
    NodeJS
    Python
    Elixir
    ASP.NET Web API
    AWS CloudFormation
    Terraform
    OpsWorks
    Docker
    Kubernetes
    Git
    Jenkins
    Vanilla js
  • Highest level of education
    Master

Job search preferences

  • Desired job type
    Full-time
    Interested in working remotely
  • Desired positions
    senior backend engineer
  • Desired work locations
  • Freelance

Work Experience

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Senior Fullstack

Deep Sentinel
Full-time
Jan 2022 - Present
Re-designed and implemented WebRTC flow in our system, increase 80% performance. Maintain and develop ReactNative and MQTT services which communicate to hubs/cameras. Monitor K8S services and integrate chatbot in slack.

Senior backend egineer

May 2018 - Sep 2021
3 yrs 5 mos
Re-designed and implemented ETL server to increase 400% performance, using Postgresql server, python and tableau. Designed and build up GraphQL service, using postgraphile. Designed and implemented CI/CD flow for python application using unicorn and Jenkins. Implemented CDC with kafka connector sink. Re-designed and improve our sales workflow, and save their time.

Enineer

Apr 2016 - May 2018
2 yrs 2 mos
Developed vedio/audio service solution using Golang and GRPC Designed and implemented application for network cache and authentication using Nginx and Lua. Developed vedio/audio service solution using Elixir. Designed and implemented AWS Cloudformation, AWS OpsWorks for CI/CD work flow, auto scale, quick build env. Implement new features using PHP. Wrote PHP Unit test, for upgrating from PHP5 to PHP7. Fork AWS ElasticCache auto discovery project for PHP 7.1.(official only support PHP 7.0). Made a presentation about AWS Serverless, AWS ECS, AWS Deploy flow for internal sharing.

Senior engineer

Aug 2015 - Mar 2016
8 mos
Designed and developed application using Golang and Websocket. Building project prototype on native app, web, mobile web. Designed and developed CMS application using .NET.

Senior Full Stack Engineer

Jan 2015 - Aug 2015
8 mos
Team lead of public API team Designed and developed custom card system. Designed and Developed Web crawler using Golang.

Engineer

Dec 2013 - Dec 2014
1 yr 1 mo
Maintained and developed Web revamp, include RWD, performance tuning(reducing 30% js file size, speed up loading speed) Designed and Developed Google Analytics Helping System, include pulling data from web, create report, send mail.

Engineer

Sep 2012 - Sep 2013
1 yr 1 mo
Developed official repair-service using ASP. Developed hunman power service, internal workflow system using ASP. Developed reporting serivce using T-SQL.

Education

Master of Science (MS)
mathematics
2010 - 2012