Martin Sommer, Developer in Palo Alto, CA, United States
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Martin Sommer

Verified Expert  in Engineering

Ruby on Rails Developer

Palo Alto, CA, United States

Toptal member since December 19, 2024

Expertise
SQLRuby on RailsLinuxAWSGitBootstrapEmber.jsAngularDockerOpenAIData ScienceOpen Source DevelopmentMacOSJavaScript
Bio

Martin is a full-stack developer with experience building cloud-based Ruby on Rails (RoR), Python, Elixir, SQL, and Linux systems. He is knowledgeable in Python ML/AI items, including NumPy, Matplotlib, Pandas, and PySpark, as well as models, data sets, and notebooks. With a doctorate in engineering and business, Martin has successfully led engineering teams in five startups.

Portfolio

Sommer Systems, LLC
SQL, Linux, Git, Ruby on Rails (RoR), Docker, JavaScript, MySQL, GitHub...

Experience

  • Linux - 20 years
  • SQL - 20 years
  • Ruby on Rails (RoR) - 12 years
  • API Development - 10 years
  • Git - 10 years
  • Amazon Web Services (AWS) - 10 years
  • CI/CD Pipelines - 10 years
  • Docker - 5 years

Availability

Full-time

Preferred Environment

Linux, MacOS

The most amazing...

...project I've been a part of is building a successful consulting company that has brought my services around the world.

Work Experience

Software Engineer

2008 - PRESENT
Sommer Systems, LLC
  • Served multiple clients, including Audi, Argonne, Salesforce, Samsung, IBM, Stanford University, Cisco, VMware, APWG, Amazon/Lab126, Motorola, Nokia, Autodesk, Netscape, Oracle, Sybase, KPMG, Xilinx, Electronic Arts, and Merrill Lynch Japan.
  • Expanded Audi/Dealerware's fleet management platform for auto dealerships, leveraging Ruby on Rails, JavaScript, MySQL, GitHub, CircleCI, Linux, Docker, and Postman API tools.
  • Transported global brand websites from Drupal to new platforms for Estee Lauder, leveraging Ruby on Rails, Elixir, Python, ChatGPT, OpenAI, PostgreSQL, Pgvector, AWS, Tailwind CSS, Git, and Linux.
  • Upgraded and expanded security applications for Argonne National Laboratory, leveraging Ruby on Rails, JavaScript, Oracle, Microsoft SQL Server, GitLab, Linux, Docker, and Amazon EC2.
  • Handled the upgrade of Heroku and Vault applications for Salesforce, leveraging Ruby on Rails, Sinatra, Elixir, Erlang, PostgreSQL, Linux, GitHub, Heroku, AWS, Salesforce, CircleCI, and Docker.
  • Performed Ruby on Rails development for Samsung, upgrading and expanding the Samsung Ads Trader platform, leveraging Rails, React, GraphQL, PostgreSQL, Minitest, Factory Bot, Jira, Concourse CI, and BERT.
  • Conducted Ruby on Rails, Docker, Kubernetes, and Jenkins development for IBM Watson Health, moving existing apps to the cloud. The environments used included Ruby on Rails, PostgreSQL, Docker, Kubernetes, Jenkins, Linux, Git, and Jira.
  • Performed Ruby on Rails development for the Humanities and Sciences dean's office at Stanford University. The environments used included Ruby on Rails, PostgreSQL, Microsoft Graph API, Office 365, Git, Linux, Scout, and Typhoeus.
  • Expanded the Cisco Kinetic IOT platform and hosted its licensing system for Cisco Systems. The environments used included Ruby on Rails, PostgreSQL, OmniAuth, Angular, Vue, Swagger, TypeScript, Vagrant, Linux, and AWS.
  • Acted as lead developer/architect on a 2-year vCloud Air project for VMware, leveraging Ruby on Rails, Puppet, Delayed Job, Capistrano, Vagrant, R10K, Sphinx, PostgreSQL, Docker, Git, and Linux.
Technologies: SQL, Linux, Git, Ruby on Rails (RoR), Docker, JavaScript, MySQL, GitHub, CircleCI, Postman, Elixir, Python, Tailwind CSS, ChatGPT, OpenAI, Pgvector, PostgreSQL, Oracle, GitLab, Amazon EC2, Heroku, Salesforce, Sinatra, Erlang, GraphQL, Minitest, Concourse CI, BERT, Kubernetes, Jenkins, Office 365, Typhoeus, Puppet, Delayed Job, Capistrano, Vagrant, Sphinx, OmniAuth, Angular, Vue, Swagger

Experience

Ruby on Rails (RoR) Development Projects

For 12 years, I have consistently excelled in solid Ruby on Rails (RoR) development projects for top-of-the-line clients. The projects involved building and maintaining Rails applications from versions 2 to 7 across multiple domains, ranging from online marketing programs to nuclear waste management. I greatly support the Rails framework and the open source community and ecosystem. In addition, I have written software against almost every imaginable SQL database from both open source and proprietary vendors.

Education

1985 - 1993

Doctorate in Engineering and Business

Hawthorne, Purdue, UVA, SIUC, and Ranken - United States

Skills

Libraries/APIs

API Development, Node.js, React, Typhoeus, Delayed Job, OmniAuth, Vue

Tools

Git, GitHub, Postman, ChatGPT, GitLab, Jira, Concourse CI, CircleCI, Jenkins, Puppet, Capistrano, Vagrant

Languages

SQL, JavaScript, Elixir, Python, Erlang, GraphQL

Frameworks

Ruby on Rails (RoR), Sinatra, Bootstrap, Ember.js, Angular, Tailwind CSS, Swagger

Platforms

Linux, Amazon Web Services (AWS), MacOS, Docker, Oracle, Amazon EC2, Heroku, Salesforce, Kubernetes

Storage

MySQL, PostgreSQL

Industry Expertise

Marketing, Accounting

Other

CI/CD Pipelines, OpenAI, BERT, Mathematical Modeling, Finance, Industrial Electronics, Engineering, Computer Science, Business, Open Source, Pgvector, Minitest, Office 365, Sphinx

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