Joseph Halter
Verified Expert in Engineering
Software Developer
After having worked as a developer in finance for several years, Joseph transitioned to a contracting role, which allowed him to gain experience across diverse industries, including HR, entertainment, and healthcare. 他与各种规模的组织合作过，从初创公司到财富500强公司.
Portfolio
Experience
Availability
Preferred Environment
Visual Studio Code (VS Code), Git
The most amazing...
...我最大的成就是参与了辉瑞公司的一个项目，加快了关键药物的交付, including the COVID-19 vaccine.
Work Experience
Partner
Openhood sarl
- Consulted for various small to medium businesses.
- 将一个事务性REST API扩展到多个服务器，使用RabbitMQ在服务器之间传递消息.
- 创建了一个静态网站生成器，以满足客户的特定需求.
- Used Ember.js和Semantic UI为移动和桌面用户创建单页web应用程序.
- 创建了一个交易多种货币的市场，用户之间可以实时聊天.
- Created a multiplayer 3D web game using Babylon.js and Elixir/Phoenix with GraphQL for the back end.
- 创建了一个带有动画组件的单页应用React网站, front-end side tests, 以及一个使用Storybook的组件库，具有响应式设计，适用于移动/平板电脑/桌面. Used GraphQL with Elixir/Phoenix in the back end.
- 处理一个非常大的Rails应用程序的GDPR遵从性，包括与10多个外部提供商的集成, each with their own API integration, including Stripe, Onfido, Braze, AppsFlyer, Mailchimp, ZenDesk, and more.
- Organized a web-based contest where people can win a $100,000 free roll then later a $250,000 free roll with timer, real-time charts and visualizations, email notifications, 一个完整的web管理界面，具有多种格式的过滤和报告.
- Allowed people to sign up using Twitter, Facebook, or email, track the signed-in user's Twitter friends, and allowed the user to share multiple events with their followers, optimize display of posts on Twitter as a nice card, and optimize for a perfect Google page speed score.
Senior Developer
Talentbox SA/Metrilio SA
- 将十几个独立的客户特定的Rails应用程序迁移到一个新的统一的可配置在线平台, 将建立新客户的时间从一个月缩短到三天.
- 维护一个包含数百个表和模型的非常大的Rails代码库, 经历几个重构过程，以便在控制维护时间的同时始终允许添加新功能.
- Added thousands of integration tests to avoid regressions, reduce errors, and reduce the need for human testing, which was previously a full-time job for one person.
- 将生产从每月一次部署提高到每天多次部署.
Software Architect
Kneip Communication SA
- 为金融机构提供基金发布矩阵浏览平台, 允许他们实时查看和搜索报告的内容，而由于Oracle数据库有大量存储过程，该公司无法每天生成报告的内容.
- 构建了一个多内部API来同步使用不同编程语言开发的遗留应用程序.
- 编写邮件机器人API，以便在基金创建的所有步骤中与ClearStream通信，以获得新的ISIN代码.
- 开发了一个新的平台，集中所有与资金相关的文件，并允许在一个非常复杂的许可系统中快速批量导入双时态数据库中的数据.
Computer Programmer
Akira Web SA
- 为香奈儿创建了一个17种语言的网站，宣传他们最新的香水.
- 通过短信通知为国际领先的钢铁和矿业公司的领导搭建沟通平台.
- 用PHP编写内部CMS，以支持多种语言本地化的网站, 允许人们创建自己的表单和向导，并将它们绑定到多个自定义服务.
- 处理多个专用服务器，并将PostgreSQL扩展到多个服务器.
- 开始越来越频繁地使用Rails来更快地开发原型.
Developer
Artic Media Sàrl
- 创建了一个基于劳动力分组的地理位置查找房地产的平台.
- 为一家珠宝店建立了一个网站，非常注重可用性和可访问性.
- 从零开始为当地一家大型购物中心编写了一个网站，并致力于搜索引擎优化，直到它在所有相关关键词的谷歌搜索中排名前10, 在连续几个月只搜索城市名称时，它甚至排名第一.
- Organized online contests where it's possible to win real money, and worked on preventing people from being able to cheat the system.
Analyst/Programmer
Lorweb Sàrl
- 将本地足球队的手工条目转换为具有可理解图表的可搜索数据库.
- 扩展了内部CMS，使客户能够更轻松地以多种语言创建新页面.
- 创建了一个任务来加载、解析XML文件的多个目录，并将其与在线数据库同步.
- 通过为分页对象创建特定索引和优化查询速度，扩展了一个基于Microsoft sql的网站.
CEO
Ekzakt Sàrl
- Managed customer expectations; responsible for estimates and team planning.
- Launched a successful multilingual online store to sell art pieces.
- Converted 2D schematics into 3D graphics, improved customer/dealership communication, and learned how to register a patent.
- Helped a customer digitize his growing paper documents archive.
- 教授客户网站管理员保持公司网站更新所需的技能.
- 使用Flash矢量和脚本功能创建响应式网站, serving different content depending on resolution.
Experience
Metrilio HR Software
Kneip Master File for Fund Data Management
http://fundlook.kneip.com/discover/masterfileSkills
Languages
SCSS, Elixir, JavaScript, Ruby, CoffeeScript, CSS, HTML, TypeScript, GraphQL, CSS2, CSS3, SQL, HTML5, HTML4, ECMAScript (ES6), JavaScript 5, JavaScript 6, TypeScript 2, TypeScript 3, PHP
Frameworks
Phoenix, Ember.js, Sinatra, Ruby on Rails (RoR), Jest, Redux, Ruby on Rails 3, Ruby on Rails 4, Ruby on Rails 5, Bootstrap, Business Rules Engine, Bootstrap 3, Bootstrap 2, Bootstrap 3+, ASP.NET, Unity3D, RubyMotion, Express.js
Libraries/APIs
REST APIs, Ember Data, jQuery, PayPal API, Sequel, React, Ruby on Rails API, React Redux, JSON API, SendGrid API, Immutable.js, Babylon.js, Node.js, Three.js, Vue
Tools
React Apollo, GitHub, Cucumber, RSpec, Git, GitLab, JSS, SendGrid, Vim Text Editor, AWS SDK, JavaScript Debugging, Flash, Blender, RabbitMQ, Webpack, Webpack 4, Webpack 3, Webpack 2
Paradigms
Testing, Test-driven Development (TDD), Behavior-driven Development (BDD), Functional Programming, Refactoring, Pair Programming, REST, Object-oriented Programming (OOP), Agile Software Development, Continuous Integration (CI), Requirements Analysis, Continuous Deployment, Web Architecture
Platforms
Godot, Heroku, Mailgun, Amazon Web Services (AWS)， Visual Studio Code (VS Code)
Storage
PostgreSQL, PostgreSQL 10, JSON, MySQL, Amazon S3 (AWS S3), Memcached, Redis, Microsoft SQL Server, MongoDB
Other
Single-page Applications (SPA), Responsive UI, API Integration, Ember CLI, Prototyping, Regular Expressions, Application Security, APIs, Workflow Modeling, Software Architecture, Bitemporality, Pub/Sub, Web Components, Scalability, User Experience (UX), Debugging, Architecture, Visualization, Ruby Gems, Ruby Performance, JavaScript Libraries, CSS Grid, CSS3 Animation, User Interface (UI), eCommerce, Technical Leadership, Apollo, App UI, App UX
Education
DEUG (Equivalent to Bachelor's) Degree in Computer Science
Université de Metz - France
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