Java Core Senior Developer
2016 - PRESENTUnited.Cloud- Implemented MPEG-CENC and multicast packet distribution.
- Introduced CI to the build process using Jenkins/Gradle/Nexus.
- Developed MultiDRM for OTT/IPTV.
- Supported native video players in SmartTV.
Technologies: Java, FFmpeg, H264, TS/FMP4, DRM, MPEG-CENCOwner
2015 - PRESENTKNetwork Solutions- Developed a runner time tracker application using AngularJS/Silex technology stack.
- Developed a REST API with Java (Spring).
- Created a skeleton development environment based on Vagrant for quick start on a single-page application with PHP back-end.
- Practiced behavior-driven development based on Behat, Mink, and Chai.
- Created a dynamic image resize component with caching mechanism.
Technologies: PHP, Silex, MySQL, MongoDB, AngularJS, React.js, Java, SpringSoftware Engineer
2015 - 2016Seven Bridges Genomics- Programmed a JPA library for REST API CRUD operations.
- Refactored a legacy billing system.
- Designed a permission microservice.
- Designed and built a proof of concept for JWT OAuth.
- Achieved 100x speed improvement of the REST API endpoint for large dataset.
Technologies: Java, Jersey, Hibernate, JPA, JacksonWordPress/AWS Developer
2015 - 2015Gampets (via Toptal)- Configured EC2.
- Configured RDS.
- Deployed a WP site to AWS.
- Configured DNS for new environment.
- Suggested the least expensive solution to support customer needs.
Technologies: PHP, AWS, EC2, RDSCTO
2015 - 2015FishingBooker- Designed and implemented a booking system.
- Integrated with PayPal Hosted and PayPal PHP SDK for automatic authorization/capturing funds.
- Integrated with Pipedrive API.
- Implemented background processor tasks that use MySQL table as a priority queue.
- Refactored CodeIgniter code to follow DDD idea and fully utilize new PHP 5.4 functionalities.
- Designed and developed a simple ORM solution based on PDO extension.
Technologies: PHP, CodeIgniter, React.js, jQuery, MySQLSoftware Engineer
2012 - 2015PSTech- Created a REST API for a mobile and JavaScript application for 3D graphic manipulation.
- Configured and integrated Gearman Job Server with PHP for offloading heavy background tasks.
- Architected a scalable Java application to support a large number of requests using AWS services.
- Created a REST API in Java (Spring) for processing information from desktop client applications and JavaScript web applications.
- Built a Publish/Subscribe component that uses AWS SQS as a queue service.
- Integrated with PayPal checkout payments.
Technologies: PHP, Gearman, Three.js, Java, Spring, AWS (multiple services), AngularJS, React.jsWeb Developer
2010 - 2012CodeAnvil- Worked as the main developer on http://brandsupply.com platform for graphic designers.
- Developed a daily deals affiliate platform with automatic system for updating daily deals from 10+ deal sites.
- Built a web platform for administration of distributed mini sites through a centralized back-end application.
- Created a project management tool for internal use.
- Programmed a CodeIgniter extension for advanced routing system that is fully configurable through the back-end application.
Technologies: PHP, CodeIgniter, JavaScript, jQuery, MySQL
Nemanja Krivokapic
Software Developer in Beograd, Serbia
Member since February 3, 2015
Nemanja started seven years ago as web developer on the LAMP stack. Through the years, he has moved from custom CMS projects to enterprise-scale, high-availability platform Java development. Thanks to his broad technical experience, he's currently working on OTT/IPTV streaming platform development as a Java Core senior engineer.
Nemanja is now available for hire
Portfolio
- United.CloudJava, FFmpeg, H264, TS/FMP4, DRM, MPEG-CENC
- KNetwork SolutionsPHP, Silex, MySQL, MongoDB, AngularJS, React.js, Java, Spring
- Seven Bridges GenomicsJava, Jersey, Hibernate, JPA, Jackson
Availability
Part-time
Preferred Environment
Windows, PhpStorm, Sublime, Git
The most amazing...
...thing I've implemented is DRM (MPEG-CENC) protection encryption algorithms for an OTT/IPTV muxer service.
Employment
Experience
- FishingBooker (Development)https://fishingbooker.com
FishingBooker is a startup passionate about fishing that connects captains with people looking to book a charter online. My responsibilities include but are not limited to:
Technologies: PHP, CodeIgniter, MySQL, PDO, Guzzle, PayPal PHP SDK - InsideMaps (Development)https://www.insidemaps.com/
InsideMaps is a smartphone/tablet app that allows users to easily create a 3D model and floor plan of their home.
Once a 3D model is created, we provide an immersive, quick, web-based 3D environment with innovative tools to help potential home buyers visualize the interior of a home and for homeowners to try furniture and make home improvements in their virtual home.
Technologies: PHP, Zend Framework 2, Gearman, AWS, ThreeJS, jQuery, PayPal Checkout integration - XooPlate (Development)
XooPlate is a gallery of free templates for different purposes. It has more than a million free templates at the moment available for free download. My job as a web developer was to refactor the current v2 system to v3 and implement responsive design elements. Another big task was optimization. It was my responsibility to optimize it as much as possible so it becomes much smoother and quicker for the visitors. We successfully launched v3 on April 5, 2013.
Technologies: PHP, CodeIgniter, MySQL, Bootstrap CSS, jQuery
Skills
Languages
Java, Java 8Libraries/APIs
React, PayPal API, JacksonTools
AWS SDK, AWS CloudWatch, Amazon SQSParadigms
REST, Object-oriented Programming (OOP), Distributed Programming, ScrumOther
Digital Rights Management (DRM), HTTP Live Streaming (HLS), MPEG-DASH, High Availability, Video EncodingFrameworks
Spring, JPA, Hibernate, Jersey, Zend FrameworkPlatforms
AWS EC2, Amazon Web Services (AWS), UnixStorage
AWS S3, MongoDB, MySQL, CouchDB
