Ernest Walzel
Verified Expert in Engineering
User Interface (UI) Developer
Bratislava, Bratislava Region, Slovakia
Toptal member since December 1, 2017
Ernest is an experienced software engineer with a feel for UX and design. He loves creating software for humans and looks up to solutions that make it look easy. He has a wide range of software engineering skills from building dashboards at Amazon to developing data processing pipelines at a DNA sequencing facility. Ernest is business-focused with good communication skills and a passion for sharing knowledge.
Portfolio
Experience
- Ruby on Rails (RoR) - 6 years
- User Interface (UI) - 3 years
- User Experience (UX) - 2 years
- React - 2 years
- GraphQL - 1 year
Availability
Preferred Environment
RubyMine, Git, Linux
The most amazing...
...thing I've built was a web application for calculating links between groups of genes and genetic diseases.
Work Experience
Programmer
Slovensko.Digital
- Created wireframes, mockups, and interactive prototypes for new projects.
- Developed a system for the secure and user-friendly forwarding of government correspondence via email.
- Worked on data extraction projects, turning APIs into database tables.
- Built an engine for parsing XML messages in undocumented formats.
Co-founder | Chief Product Officer
Feedpresso
- Acted as a product designer and programmer for a multi-platform news recommendations app powered by machine learning.
- Designed and implemented the front-end of an Android app with a rating of 4.7 in the Google Play Store.
- Built a web version of the app using React.js that was deployed as a progressive web app on any device including laptops, tablets, and mobile phones including iOS, Android, and Windows devices.
- Conducted usability testing and user interviews over the phone and in person.
- Managed and was responsible for the design work and marketing in the company.
Bioinformatician | Programmer
Edinburgh Genomics
- Built and maintained data processing workflows for multi-gigabyte datasets coming from DNA sequencing machines.
- Designed and implemented RESTful APIs for automated metadata management.
- Designed and built user-facing data management tools for streamlining DNA sequencing process and minimizing errors.
- Co-authored and delivered a hands-on workshop entitled "Linux for Biologists" that helped scientists get started with Bash and Linux environments.
IT Engineer | Software Development Engineer
Amazon.co.uk
- Worked for the distribution center network of Amazon UK; joining as IT support staff and later becoming a software development engineer.
- Built tools for monitoring and automation of IT infrastructure for deployment in distribution centers around the globe.
- Maintained Rails-based business intelligence dashboards for regional operation teams throughout Europe.
- Built a time-clock system for tracking attendance of ~3,500 contractors across the UK.
- Designed and created a UI for the easier creation of support tickets for the warehouse staff.
- Co-led a team of programmers that supported IT tools for the global distribution center network.
Experience
Feedpresso
Built in React, this web app is designed to run as a progressive web app and looks great on desktops, tablets, and smartphones of any platform.
The Feedpresso app is also available as a native Android app in the Google Play Store.
CoderDojo Bratislava
Education
Master's Degree in Informatics
University of Edinburgh - Edinburgh, Scotland
Bachelor's Degree in Computer Security and Forensics
University of Bedfordshire - Luton, England
Skills
Libraries/APIs
React
Tools
Adobe Experience Design (XD), Figma, Git, RubyMine
Languages
JavaScript, Python, Ruby, GraphQL, Perl, Bash, PHP, Zebra Programming Language (ZPL), SQL
Frameworks
Ruby on Rails (RoR), React Native
Platforms
Linux, Android, Docker
Storage
MySQL, MongoDB, PostgreSQL
Paradigms
Agile
Other
User Interface (UI), User Experience (UX), User Interviews, FASTA, FASTQ, Cisco, Design
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring