Valts is available for hire
Hire ValtsValts Darznieks
Verified Expert in Engineering
Software Developer
Location
Riga, Latvia
Toptal Member Since
February 4, 2022
Valts has 14 years of professional experience and has accumulated a large set of skills. His primary focus has always been on UI/UX. He has extensive experience with mobile applications and modern web development and is proficient in back-end technologies as well.
Portfolio
Mobilly
JavaScript, TypeScript, Node.js, Android, iOS, Cordova, Express.js, Firebase...
Ryze Management Limited
Automation, Node.js, Proxies, Scraping
BuzzTale
Android, Java
Experience
Availability
Part-time
Preferred Environment
WebStorm, OS X, Linux
The most amazing...
...thing I've developed is a Latvian national vaccination registration portal with 1.5 million users in the first week. I worked as the lead front-end engineer.
Work Experience
Senior Front-end Engineer | R&D
2014 - PRESENT
Mobilly
- Led as front-end engineer on the national vaccination registration portal.
- Developed a national train transportation ticketing system.
- Managed one of the most popular city service payment apps in Latvia.
- Worked with Open Charge Point Protocol (OCPP) systems to manage EV charging.
- Worked on multiple data collection and scraping projects. Have experience also with circumventing many scraping deterrents.
Technologies: JavaScript, TypeScript, Node.js, Android, iOS, Cordova, Express.js, Firebase, React Native, Styled-components, HTML, Front-end, Open Charge Point Protocol (OCPP), Zoho, Zoho API, FFmpeg, Puppeteer, Automation
Developer
2023 - 2024
Ryze Management Limited
- Created a system that scrapes large amounts of data from Reddit.
- Implemented automatic posting on Reddit on a big scale from the cloud.
- Created an application that helps generate content to be used for posts.
Technologies: Automation, Node.js, Proxies, Scraping
Android Developer
2013 - 2014
BuzzTale
- Refactored an existing Android application entirely and updated it using the latest technologies and principles.
- Hosted the application in multiple real-time social events with many users.
- Managed automated build and deployment processes for the app's front-end stack.
Technologies: Android, Java
Game Developer and Designer
2010 - 2011
Amber Games
- Worked on multiple games designs documents and pitches.
- Led a huge social poker game called 8VegaPoker. I was the front-end developer.
- Launched the FarmVille clone on more than five social networks.
- Profiled and resolved performance issues for multiple in-house games.
Technologies: Flash, HaXe, ActionScript 3, Front-end
Full-stack and Game Developer
2009 - 2010
Africa Speles
- Designed and developed the first social game in Latvia with 200,000 active users in the first quarter.
- Developed a popular friend quiz game in the Hungarian social network iwiw.hu.
- Worked on multiple 3D flash social game prototypes.
Technologies: JavaScript, CSS, PHP, Flash, ActionScript 3, HaXe, HTML, Front-end
Full-stack Developer | System Architecture
2007 - 2009
Bezrindas
- Created the first and most popular ticketing system in Latvia, selling public transportation and event tickets.
- Designed and created a ticket and scanner system for local hockey games and servicing events with over 10,000 people in the Arena Riga.
- Worked on local Paypal's system and managed security and finances.
Technologies: JavaScript, PHP, CSS, .NET, HTML, Front-end
Full-stack Developer
2005 - 2006
Mapon
- Worked on multiple minor in-house tools and systems.
- Integrated the web's front end with our auto-park tracking hardware.
- Acquired lots of experience and knowledge about web development. This was my first job.
Technologies: JavaScript, CSS, PHP, HTML, Front-end
Experience
National Vaccination Registration Portal
https://manavakcina.lv/It was a joint effort between multiple organizations, and I was lucky enough to have the chance to work on the project as the lead front-end engineer.
The project was completed in three weeks and had more than one million active users in the first few days.
The project was completed in three weeks and had more than one million active users in the first few days.
Skills
Languages
JavaScript, HTML, TypeScript, Java, HaXe, ActionScript 3, CSS, PHP
Libraries/APIs
React, Puppeteer, Node.js, Zoho API, FFmpeg
Paradigms
Automation
Other
Cordova, Front-end, Zoho Books, Styled-components, Open Charge Point Protocol (OCPP), Zoho, Proxies, Scraping
Frameworks
Express.js, React Native, .NET
Platforms
Android, Firebase, Zoho CRM, iOS
Tools
Flash
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