Clemens Helm, Developer in Vienna, Austria
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Clemens Helm

Verified Expert  in Engineering

Software Developer

Location
Vienna, Austria
Toptal Member Since
October 24, 2017

克莱门斯作为一名全栈web开发人员已经工作了超过15年. 他热衷于设计和制造高质量的产品. 他最喜欢的自由职业是有机会遇到各种类型的项目, people, and cultures. 以这种方式工作，他不断获得经验和知识，为他的下一个项目.

Full-stackWeb DevelopmentAgileRubyTest-driven Development (TDD)Behavior-driven Development (BDD)Unit TestingCucumberMeteorReactRuby on Rails (RoR)DatabasesSQLCSSAmazon S3 (AWS S3)

Portfolio

Goody
React, Ruby on Rails (RoR)， GraphQL, PostgreSQL，顺风CSS, Ruby
Clemens Helm
Sass, jQuery, React, JavaScript, Meteor, Ruby on Rails (RoR)， Ruby
Medbee
Ruby on Rails (RoR)， React, GraphQL, RabbitMQ, PostgreSQL, MongoDB, Apache Solr

Experience

Ruby on Rails (RoR) - 14 yearsJavaScript - 11 yearsSQL - 11 yearsRuby - 8 yearsTest-driven Development (TDD) - 6 yearsAmazon Web Services (AWS) - 4 yearsMeteor - 3 yearsReact - 2 years

Availability

Full-time

Preferred Environment

Git, Zsh, ITerm, Vim Text Editor, Atom, MacOS

The most amazing...

...我建立的平台是Codeship，一个为开发人员提供持续集成服务的平台.

Work Experience

Senior Full-Stack Developer

2021 - PRESENT
Goody
  • 使用Ruby on Rails和React改进了一个电子商务平台，用于发送和接收礼物.
  • Implemented interfaces to third-party eCommerce providers.
  • 使用React和Tailwind CSS创建可靠且快速执行的用户界面.
  • 在PostgreSQL中使用触发器和搜索向量实现高级搜索功能.
技术:React, Ruby on Rails (RoR)， GraphQL, PostgreSQL，顺风CSS, Ruby

Freelance Web Application Developer

2006 - PRESENT
Clemens Helm
  • Developed solid corporate websites with PHP, JavaScript, and CSS.
  • 通过开发MVP和指导初级开发人员，帮助早期创业公司构建软件架构.
  • 为遗留Ruby on Rails代码库创建特性，并通过引入测试驱动开发和广泛重构来清理它们.
  • Implemented data imports from Twitter, Instagram, and other APIs.
  • 使用ImageMagick处理图像，以增强某些方面，如其主色调，就像Instagram滤镜一样.
技术:Sass, jQuery, React, JavaScript, Meteor, Ruby on Rails (RoR)， Ruby

CTO

2019 - 2021
Medbee
  • Managed a small team of web, iOS, and Android developers.
  • 使用Webpack、TypeScript和React将过时的前端转换为现代栈.
  • 改进了整体架构，同时降低了整体复杂性，提高了可靠性.
  • 在Ruby on Rails之上创建了GraphQL API，使前端开发人员能够灵活地获取所需的数据.
  • Made sure everyone on the team was happy and productive.
  • Did a ton of other stuff, like planning sprints, reviewing pull requests, communication with stakeholders, etc.
技术:Ruby on Rails (RoR)， React, GraphQL, RabbitMQ, PostgreSQL, MongoDB, Apache Solr

Lead Full-stack Developer

2018 - 2020
Temedica
  • 为使用某种医疗产品的人群开发了一个移动应用程序.
  • Led a small team of web developers working with Vue.js and Ruby on Rails.
  • 协调与Temedica内部和外部客户的沟通.
Technologies: Ruby on Rails (RoR), Vue, Vuex, React Native, PostgreSQL, Redis, Amazon Web Services (AWS)

Senior Front-end Developer

2019 - 2019
PSPDFKit
  • 改进了PSPDFKit web查看器，一个在浏览器中呈现和注释PDF文档的工具包.
  • 开发了PSPDFKit web查看器的使用场景示例来演示用例.
  • Wrote guides to showcase features of the web viewer.
Technologies: React, Webpack, Elixir, Middleman

Senior Full-stack Developer

2018 - 2019
IOHK
  • Got introduced to developing smart contracts on a blockchain.
  • Developed an electron application that manages sandboxed Node.js processes.
  • Collaborated with an international team of developers.
Technologies: React, Electron, MobX, Node.js, Storybook, Docker

CEO | CTO

2015 - 2018
ChillBill
  • 使用Meteor, MongoDB和React创建了一个自动会计的web平台.
  • 使用Ruby、ImageMagick和Tesseract开发了一个健壮的发票识别软件.
  • Led a team of nine brilliant web developers and data scientists.
  • 建立强大的产品愿景，并根据愿景和客户反馈规划产品功能.
  • 使用几个api进行可靠的货币转换、安全的vat号验证等.
Technologies: React, Ruby, Meteor

IT Consultant | Mentor

2015 - 2016
Inselberg
  • 为创始人团队提供技术栈和产品战略方面的建议.
  • 指导初级开发人员如何开发一个可靠的Ruby on Rails应用程序.
  • Implemented critical features which required a senior developer.
  • Reviewed code to ensure code quality and performance.
  • Provided my product team with feedback on their roadmap.
Technologies: PostgreSQL, Ruby on Rails (RoR), Ruby

Full-stack Developer

2014 - 2015
Sientia
  • 为房地产公司创建了一个可靠的业务工作流web应用程序.
  • 重构现有代码，使其尽可能可维护.
  • 在MongoDB索引和部署几tb的数据库方面获得了很多经验.
  • 在一个有数十万行代码的大型Ruby on Rails应用程序上工作.
  • 使用Elasticsearch开发了一个复杂的全文搜索，并获得了部署它的经验.
Technologies: Redis, MongoDB, Ruby on Rails (RoR), Ruby

Vice President of Engineering

2012 - 2014
Codeship
  • 使用Ruby on Rails、PostgreSQL和LXC开发一个托管的持续集成平台.
  • Led a team of several brilliant software developers.
  • 与Codeship团队一起参加TechStars Boston项目.
  • 管理和开发整个Codeship web应用程序的前端和后端.
  • 开发了详尽的测试套件，以确保平台的可靠性和可扩展性.
Technologies: Sass, Redis, PostgreSQL, Ruby on Rails (RoR), Ruby

Codeship

http://codeship.com/
Codeship is a continuous integration platform in the cloud. 我参与了整个web应用程序的开发以及持续集成服务. 我开发了一个高度可扩展的应用程序，每天被成千上万的软件开发团队使用.

ChillBill

An automated accounting tool for small businesses. 作为首席执行官和首席技术官，我参与了技术和生产方面以及业务方面的工作. 通过这个，我学会了从不同的角度来看待软件应用.

Medbee

http://medbee.org/
Medbee为医疗专业人员提供了一个相互分享知识的平台.
我以首席技术官的身份领导技术团队，协调各种技术的开发, like Ruby on Rails, React, GraphQL, and Android and iOS native development. I also actively developed in the web front end and back end.

Languages

JavaScript, Ruby, HTML, SQL, CSS, Sass, HTML5, TypeScript, Elixir, GraphQL, Swift

Libraries/APIs

React, Node.js, jQuery, MobX, Vue, Vuex, Mongoid, Marionette.js, ImageMagick

Tools

Cucumber, Codeship, Amazon Elastic Container Service (Amazon ECS), Git, Atom, Vim Text Editor, Webpack, Middleman, RabbitMQ, Apache Solr, Solr, Zsh, Amazon Elastic Container Registry (ECR), AWS SDK, ITerm

Paradigms

Test-driven Development (TDD), Behavior-driven Development (BDD), Object-oriented Programming (OOP), Unit Testing, Testing, Software Testing, Continuous Delivery (CD), Continuous Development (CD), Agile, Functional Programming, Continuous Integration (CI), Scrum

Platforms

Meteor, Heroku, Amazon Web Services (AWS)， MacOS, Amazon EC2, Docker

Other

Semantic UI, Full-stack, Web Development, APIs, Product Management, Tesseract, Usability, Storybook, Software Engineering, Computer Science, Computer Engineering, Image Processing, Lean Product Development, Product Development

Frameworks

Electron, Ruby on Rails (RoR), Material UI, Express.js, React Native, Tailwind CSS

Storage

Amazon S3, Redis, MongoDB, PostgreSQL, Databases, Memcached, JSON

2008 - 2017

软件工程和互联网计算硕士学位(在读)

The Vienna University of Technology | TU Wien - Vienna, Austria

2008 - 2017

Master's Degree (in Progress) in Media and Computer Science

The Vienna University of Technology | TU Wien - Vienna, Austria

2009 - 2009

计算机工程硕士学位(国外学习一学期)

波尔图大学英语学院-波尔图，葡萄牙

2003 - 2008

Bachelor's Degree in Media and Computer Science

The Vienna University of Technology | TU Wien - Vienna, Austria