Daniel Zajic
Senior Software Engineer at Form Health- Claim this Profile
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English Native or bilingual proficiency
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Czech Native or bilingual proficiency
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Bio
Michael Klopot
Dan has superb knowledge of Rails, and stays up-to-date with new releases and features, and the tools and utilities that surround them. Dan is right at home in a fast-paced, Agile environment. And from my operations angle, I can add with confidence that Dan's code has never caused any problems in production, but rather has always run smoothly. This is because Dan has a solid understanding of modern cloud environments. Also, Dan is generally insightful, and fun to be around!
Mike Greenberg
Dan is a humble and thoughtful engineer. He works hard to make sure he always delivers a solution which is elegant, considerate of his colleagues, and solves the problem with the tools available. Dan also goes out of his way to learn new things and provide constructive feedback whenever asked. Working with him has made me a much more confident developer.
Michael Klopot
Dan has superb knowledge of Rails, and stays up-to-date with new releases and features, and the tools and utilities that surround them. Dan is right at home in a fast-paced, Agile environment. And from my operations angle, I can add with confidence that Dan's code has never caused any problems in production, but rather has always run smoothly. This is because Dan has a solid understanding of modern cloud environments. Also, Dan is generally insightful, and fun to be around!
Mike Greenberg
Dan is a humble and thoughtful engineer. He works hard to make sure he always delivers a solution which is elegant, considerate of his colleagues, and solves the problem with the tools available. Dan also goes out of his way to learn new things and provide constructive feedback whenever asked. Working with him has made me a much more confident developer.
Michael Klopot
Dan has superb knowledge of Rails, and stays up-to-date with new releases and features, and the tools and utilities that surround them. Dan is right at home in a fast-paced, Agile environment. And from my operations angle, I can add with confidence that Dan's code has never caused any problems in production, but rather has always run smoothly. This is because Dan has a solid understanding of modern cloud environments. Also, Dan is generally insightful, and fun to be around!
Mike Greenberg
Dan is a humble and thoughtful engineer. He works hard to make sure he always delivers a solution which is elegant, considerate of his colleagues, and solves the problem with the tools available. Dan also goes out of his way to learn new things and provide constructive feedback whenever asked. Working with him has made me a much more confident developer.
Michael Klopot
Dan has superb knowledge of Rails, and stays up-to-date with new releases and features, and the tools and utilities that surround them. Dan is right at home in a fast-paced, Agile environment. And from my operations angle, I can add with confidence that Dan's code has never caused any problems in production, but rather has always run smoothly. This is because Dan has a solid understanding of modern cloud environments. Also, Dan is generally insightful, and fun to be around!
Mike Greenberg
Dan is a humble and thoughtful engineer. He works hard to make sure he always delivers a solution which is elegant, considerate of his colleagues, and solves the problem with the tools available. Dan also goes out of his way to learn new things and provide constructive feedback whenever asked. Working with him has made me a much more confident developer.
Experience
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FORM │ Virtual obesity medicine clinic
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United States
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Health, Wellness & Fitness
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1 - 100 Employee
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Senior Software Engineer
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Jun 2020 - Present
Helping to push the state of the art in obesity telehealth at an early stage startup; working on a very small but high performing team that moves quickly and safely. - Ruby on Rails back-end and clinical tools - React components where needed - TailwindCSS - GraphQL (Apollo Server) via AWS Lambda - Cypress E2E testing - integrating SaaS for heavy lifting (e.g. Customer.io, Sendbird, Contentful, Cronofy, Zoom, Elation, Dockhealth) - extensive monitoring and logging (Honeycomb, Scout APM, Bugsnag, LogDNA) - analytics (Segment, Redash) - feature flags for all user-facing changes (LaunchDarkly) - HIPAA compliance, data security processes Show less
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Interfolio from Elsevier
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United States
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IT Services and IT Consulting
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100 - 200 Employee
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Sr. Backend Rails Engineer
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Feb 2019 - Jun 2020
Day-to-day: - maintain and extend both mature and new Rails APIs in a SOA - APIs consumed by internal apps, SPAs and external clients - technologies: Ruby, Rails, MySQL, Postgres, Amazon SNS/SQS - participate in architectural decisions Challenges: - balancing customer priorities and company growth with the need to do significant refactoring in a legacy codebase - simultaneously being both bold and conservative Acting as a force multiplier: - mentoring junior and less experienced Rails developers - suggesting improvements to team processes and coding standards as needed - challenging the status quo Show less
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Doximity
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United States
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Software Development
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500 - 600 Employee
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Software Engineer - Ruby on Rails
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Feb 2016 - Feb 2019
- full-stack Ruby on Rails, Vue.js, GraphQL, MySQL, Backbone.js, ElasticSearch - large/mature mostly monolithic application continually being split out into many smaller apps - full-stack Ruby on Rails, Vue.js, GraphQL, MySQL, Backbone.js, ElasticSearch - large/mature mostly monolithic application continually being split out into many smaller apps
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bespoke offers
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Retail
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1 - 100 Employee
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Ruby on Rails Developer
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Jul 2012 - Nov 2015
- e-commerce web application for a large company - Rails 3.x/4.x app with engines, 100s of gems and 1000s of tests, dozens of Git repos - 20-25 Rails developers on the team, 120+ people total - quality code was top priority - extensive code reviews for all work - dealing with banking security - e-commerce web application for a large company - Rails 3.x/4.x app with engines, 100s of gems and 1000s of tests, dozens of Git repos - 20-25 Rails developers on the team, 120+ people total - quality code was top priority - extensive code reviews for all work - dealing with banking security
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Analog Analytics
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Advertising Services
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1 - 100 Employee
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Full Stack Ruby on Rails Developer
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Jun 2011 - Jun 2012
- Back-end development for daily-deal/coupon platform provider. - Required familiarity with all areas of a mature application with many moving parts. - Shared responsibility for deployment, monitoring/alerting, client-interaction, requirements analysis, etc. - Team of ~10 highly skilled engineers. - 50% of time spent pairing, mostly co-located, but sometimes remote via screensharing. - Back-end development for daily-deal/coupon platform provider. - Required familiarity with all areas of a mature application with many moving parts. - Shared responsibility for deployment, monitoring/alerting, client-interaction, requirements analysis, etc. - Team of ~10 highly skilled engineers. - 50% of time spent pairing, mostly co-located, but sometimes remote via screensharing.
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Regence BlueCross BlueShield of Oregon
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United States
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Insurance
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700 & Above Employee
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Full Stack Ruby on Rails Developer
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Aug 2010 - Jun 2011
- Early-stage application development for brand-new wellness platform to be released April 2011. - Brought on as a Rails expert to transition Java developers and ensure best practices would be followed. - Lead developer of API to be used by companion iPhone application. - Early-stage application development for brand-new wellness platform to be released April 2011. - Brought on as a Rails expert to transition Java developers and ensure best practices would be followed. - Lead developer of API to be used by companion iPhone application.
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Radius Management
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Portland, OR
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Full Stack Ruby on Rails Developer
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Jan 2008 - Dec 2010
- Designed and developed a custom web application to support all aspects of the business. - Web app powered 7 public-facing websites (5 retail, 1 financing and 1 purchasing) and a backend administrative application to manage inventory, licensees, reporting, marketing, sales, purchasing, etc. - Full life-cycle development, including server setup/administration, source code versioning, scheduled backups, performance monitoring, etc. - Created many tools to improve efficiency and facilitate innovation, new initiatives. Show less
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ZisBoomBah.com
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Wellness and Fitness Services
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Full Stack Ruby on Rails Developer
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2010 - 2010
*** Won Grand Prize in Michelle Obama’s “Apps for Health Kids” competition. *** - Early-stage application development for startup company. - Migrated application to cloud-based services (Heroku, S3). - Implemented multimedia features using JavaScript/jQuery (sound effects, Flash animation). - Managed Git repository and handled staging, deployment and system administration. - Used Unfuddle for issue tracking and time management. *** Won Grand Prize in Michelle Obama’s “Apps for Health Kids” competition. *** - Early-stage application development for startup company. - Migrated application to cloud-based services (Heroku, S3). - Implemented multimedia features using JavaScript/jQuery (sound effects, Flash animation). - Managed Git repository and handled staging, deployment and system administration. - Used Unfuddle for issue tracking and time management.
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Java Web Application Developer
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Jan 2007 - Mar 2008
- Developed web application for YourGenie, a venture capital-backed startup e-business. - Worked with 2 other developers in a small, distributed team environment. - Customized ElasticPath framework to meet project requirements. - Worked with Java J2EE (Jakarta Struts/Velocity, Hibernate, Tomcat) and MySQL 5. - Converted business mockups into functional web application components. - Integrated e-commerce (Verisign) and shipping management (UPS) solutions. - Developed web application for YourGenie, a venture capital-backed startup e-business. - Worked with 2 other developers in a small, distributed team environment. - Customized ElasticPath framework to meet project requirements. - Worked with Java J2EE (Jakarta Struts/Velocity, Hibernate, Tomcat) and MySQL 5. - Converted business mockups into functional web application components. - Integrated e-commerce (Verisign) and shipping management (UPS) solutions.
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Digital Dreamboard
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remote
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Full Stack Ruby on Rails Developer
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Apr 2007 - Oct 2007
- LAMP/Rails developer (startup project, unpaid) - Co-developed web application using LAMP (Perl Catalyst) and later converted to RoR. - LAMP/Rails developer (startup project, unpaid) - Co-developed web application using LAMP (Perl Catalyst) and later converted to RoR.
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Plenable Solutions
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remote
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LAMP developer (full stack)
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Apr 2003 - Aug 2006
- Developed web applications for Decorative Product Source (faucet.com) and Vintage Arte (vintagearte.com) - Worked with 2 other developers and a project manager in a small, distributed team environment. - Developed a scalable, customizable web application framework to support business processes including web sales, inventory management, account auditing/reporting, vendor interaction, etc. - Integrated websites with e-commerce solutions (Verisign, Cybersource) - Wrote custom search to query a large database of products sorting results by relevance. - Developed custom authentication/authorization to precisely control user permissions. - Administered multiple Linux servers to support development/deployment. Show less
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Point Of Choice
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Fairfield, IA and remote
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LAMP Developer (full stack)
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Jan 1999 - Jan 2003
- Developed custom CMS to drive a proprietary recipe content module for grocery chain websites, and the in-house/flagship website, MealsForYou.com. - Worked with 2-3 other developers in a small team environment. - Managed all daily operations, including system administration, - Developed custom CMS to drive a proprietary recipe content module for grocery chain websites, and the in-house/flagship website, MealsForYou.com. - Worked with 2-3 other developers in a small team environment. - Managed all daily operations, including system administration,
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Education
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MUM
Master of Science, Computer Science -
MUM
Bachelor of Science, Computer Science; Mathematics