- Zaporizhzhya, UA
- $27 /hr
- Available now
WordPress, Android, iOS projects development and maintenance
Hello! I am Serhii. I am a Software Engineer. My main specialization is mobile apps development. I work with Android (Java), iOS (Swift), and Web Apps (frontend & backend:more...Hello! I am Serhii. I am a Software Engineer. My main specialization is mobile apps development. I work with Android (Java), iOS (Swift), and Web Apps (frontend & backend: WordPress, JS/jQuery, Chrome Extension, Go) development. I have the experience with real projects since 2013. I have a Master's Degree in Computer Engineering (2015) and work experience background.
My past long-term clients were: the UK cryptocurrency startup (2018) and the Netherlands hosting provider "Snel" (Web) (2018). Also, I have been the Android developer at the UK marketplace startup (2017-2018) and the web developer at the Swedish healthcare startup project (2017-2018).
My skills and Experience:
+ Android, Java & Kotlin:
I completed a few projects: the app for the online marketplace with Firebase, the webview app with custom intents and notifications, the focus calculator app with secrets (since 2017). With Java Servlets and JSP, I made simple web apps and web services (JAX-WS, JAX-RS) (2013-2015).
+ iOS, Swift 4:
I made the app like Pitch Perfect app of Udacity course (since 2017).
I have made a few extensions. The two biggest ones are LinkedIn (auto-connect, auto-messages) and Instagram (auto-follow, auto-unfollow) bosts to boost profiles and automate the work. Also, a few extensions to automate my work.
I made a lot of websites, fixed tons of bugs and created new plugins and themes. I like coding with WordPress, not just to click with a mouse. I created the useful plugin for the multilingual Amazon wholesaler, the plugin for the trading on different Bitcoin and altcoins trading platforms (Binance, Bittrex, Bitfinex APIs and other). I developed a few custom modules for Beaver Builder plugin, Visual Composer. I worked with WooCommerce and created custom endpoints.
I made a lot of the frontend job for custom web apps: calendars for vacation, game map generator, shopping carts, quote calculators, URL checking and more (since 2013). My own project (automation tools for social media) is based on JS with a little jQuery.
I made several backends for web apps, mobile apps, and admin dashboards. I worked with pure PHP: functions and OOP with MVC structure (since 2014).
+ Ruby on Rails, CoffeeScript:
I took part in developing the big enterprise system (2016). I have a little experience but I can learn.
+ Python/Bottle framework, MongoDB:
I created the backend for the mobile app to store data and upload images (2015).
+ Windows Phone (C++):
I developed an image comparison app to compare images from one place. I used the OpenCV library (2015). Also, I developed the app for the lottery club on C# (2016).
I am open to learning new technologies for your projects.
4+ years I work as a software developer in Yolyas Systems, Redwerk, and YolitNen teams and now I work full time remotely as a freelance Software Engineer. YolitNen is my personal brand - one person company.
I work with mobile development since Fall 2017. I work with Java since 2012, with the Web since 2013, with Android and iOS since Fall 2017.
You can hire me on the hourly base or task-based (fixed price). Also, you can find my monthly maintenance plans for WordPress. Please see the information in my portfolio below.
I am a freelancer since 2014 and, also, I make my own products too. There are a few SaaS projects and plugins for WordPress (search on Envato: YolitNen Labs and YolitNen Labs Pro).
I have a plan to improve my skills and experience. Now I improve my skills in iOS, Android, Flutter, Go and Django/Python. So if you have projects with these technologies, I can work with you as a trainee/junior developer.
I have experience in using Trello, Asana, Slack, Jira, GitHub, BitBucket, GitLab, Heroku, Google Cloud, Vagrant, and other tools and services.
I work with different methodologies: Waterfall + Scrum + Kanban.
My time zone is GMT+3, I am available 9 am - 10 pm Mon-Fri. But I can work during your time zone.
I have more skills and abilities, I will use all of them in your project.
Please contact me to discuss your job and tasks!
Mobile Apps & Web Developer: Android, iOS, Chrome Extensions, Golang, Wordpress, Modules for Beaver Builder & Visual Composer
Very good and professional.
Serkhi did some amendment work for me on wordpress. He made the seemingly impossible, possible when so many other developers failed on my request. Highly recommend him!
Thank you for the nice feedback, please feel free to ask me more help.
Very professional...The job was done quickly with no fuss.
Thank you so much
Once again Serhii has completed my task to a high standard.
I am very happy with his work on this project, and he even managed to finish this earlier than was expected.
Thank you, David. I hope to work with you again.
Serhii was very professional throughout this whole process and met all of my expectations to complete the task.
This was quite a complex task which required a lot of JAVA / AJAX expertise and customisation, not only to my site but the Wordpress Plugins which I use. Serhii was unfazed by this and even set out to make an additional plugin to make it easier for my customisation to the site when needed.
I intend to use Serhii's excellent skills and knowledge again for any future tasks I have for my site.
Thank you for your complex and interesting tasks!
Thank you! Everything is good!
Thank you! Nice work done.
Thank you very much!
Great work, thanks
Thank you for your tasks
Fantastic work, thanks!
Thank you, Nick, for the interesting tasks
Excellent! Professional, fast, great communication. Looking forward to work with Serhii again.
Good work. Reliable developer. Great!
Reliable, professional .. great to work with
Thank you, Chris!