Technical Team Lead/Senior Ruby on Rails Engineer
2019 - 2020Red Panda Software- Developed back-end functionality.
- Planned and implemented new features.
- Reviewed code and supported deployment.
- Identified system weak points and optimized critical parts of the system.
- Proposed solutions for potential issues before they occur.
- Made architectural decisions.
Technologies: Ruby, Ruby on Rails, API, Postgres, Redis, Docker, Heroku, GCP, Mercurial, GitSenior Ruby on Rails Engineer
2018 - 2019Klika d.o.o.- Contributed to the development of a fintech project and provided performance troubleshooting and optimizations.
- Developed primarily back-end (microservices, REST API integrations, etc.) features but contributed to the full stack.
- Implemented solutions and delivered high-quality software based on Ruby on Rails.
- Applied software standards of clean code and proven optimization techniques.
- Created, maintained, and debugged software.
- Planned and defined requirements, creating software designs and translating them into code.
Technologies: Ruby, Ruby on Rails, MySQL, RabbitMQ, JWT, Microservices, Fintech, Docker, Nginx, Rest API, XMLLead Software Engineer
2017 - 2018OSB IT and Engineering- Managed a team of five people, coaching and mentoring them as well as supervising their day to day activities.
- Reviewed code and developed on front-end projects.
- Led the team as scrum master.
Technologies: JavaScript, jQuery, Ruby on Rails, MySQL, GitSenior Ruby on Rails Engineer
2016 - 2017Genijalno.ba- Contributed to the development of a number of small projects.
- Provided full-stack development.
- Managed a small team and reviewed code.
- Set project architecture.
Technologies: Ruby, Ruby on Rails, CrateIO, PostgreSQL, React, Node.jsSenior Ruby on Rails Engineer
2016 - 2016Pulsr (via Toptal)- Worked on a back-end REST API.
- Implemented Redis caching for the REST API.
- Worked with geospatial queries (PostGIS) and geocoding.
- Refactored some of the previously implemented features like importing events and venues from external APIs (Eventful/Foursquare).
- Participated in code reviews.
- Implemented API versioning and authentication.
- Worked on parsing tweets ingested from Twitter, using Twitter Stream.
- Refactored notifications (SMS, email, push notifications).
- Fixed bugs.
Technologies: Ruby, Ruby on Rails, PostgreSQL, Redis, Elasticsearch, Twitter API, Twilio API, Eventful API, Foursquare API, REST, JSON, PostGIS, Sidekiq, Git, Linux, Amazon RDS, EC2, S3Senior Ruby on Rails Engineer
2016 - 2016Stowaway Cosmetics (via Toptal)- Developed architecture for a new REST API used for an eCommerce site.
- Worked on a REST API that uses Spree eCommerce framework.
- Created Ansible scripts to migrate data from an Amazon RDS instance to Heroku.
- Helped to set up and deploy a new API to Heroku.
- Participated in code reviews.
Technologies: Ruby, Ruby on Rails, PostgreSQL, Heroku, Amazon RDS, Ansible, REST API, JSON, SpreeSenior Software Engineer
2013 - 2016Maestral Solutions- Worked on several projects as a full-stack developer using a broad range of technologies and following the Agile and Scrum methodologies of software development.
- Worked on creating a powerful survey engine that enables company-wide management of surveys.
- Worked on a promotions management web app used for creating and scheduling effective promotion campaigns, contests, and events for a given organization.
- Worked on a hybrid mobile app (PhoneGap + Ionic framework + AngularJS) used for time tracking employees or members of a given organization.
- Worked on a web app that provides information to hunters about planning hunting season. The app provides services for scheduling and reservation of hunting stands and marking the stands using Google Maps.
- Worked on a social network site intended for hunters. The app provides several advanced functionalities like a friends suggestion engine, notifications, messaging, content sharing, and integration with other popular social networks like Facebook, Google+, and Twitter.
Technologies: Ruby, Ruby on Rails, JavaScript (jQuery, Angular, Backbone, Node.js), PostgreSQL, MongoDB, Redis, .NET (C#, WCF Services, Web API, ASP.NET MVC, Entity Framework, LINQ, ASP.NET SignalR), MS SQL Server, PhoneGap, HTML5, CSS, Bootstrap, Facebook APISoftware Engineer
2011 - 2013Raiffeisen Bank- Worked on core banking services and financial systems that supported more than a million financial transactions per day.
- Worked with large, complex, and distributed databases.
- Exposed to the complexities on all levels and phases of the software development cycle.
- Worked on various optimizations processes (SQL queries, reporting services, WCF services optimization, and configuration).
- Provided real-time support for a large number of customers.
- Created a powerful engine that deals with processing and generation of SWIFT transactions.
- Worked on business and transaction rule engines that represent an important part of the core of banking system.
- Worked on creating e-banking and mobile banking services.
Technologies: VB6, VB.NET, C#, Windows Forms, Web Forms, Windows Services, WCF Services, MS SQL, Reporting Services, TFSJunior .NET Developer
2011 - 2011ComTrade- Worked primarily on the back end.
- Wrote and managed IVR Scripts.
- Parsed a variety of XML messages.
- Contributed to service integration with BH Telecom.
- Developed SMS message processing.
Technologies: ASP.NET MVC, WCF Services, Web Services, Windows Services, C#, C++, Entity Framework, LINQ, MS SQL Server, SVN
Matej Cica
Software Developer in Sarajevo, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina
Member since September 23, 2015
Matej is an experienced software engineer with a strong background in a variety of Microsoft technologies and open source technologies such as Ruby on Rails. He is proficient in dealing with big distributed data systems, such as banking and financial systems. Matej is a self-motivated individual who is deadline focused and thorough in his approach to work.
Matej is now available for hire
Portfolio
- Red Panda SoftwareRuby, Ruby on Rails, API, Postgres, Redis, Docker, Heroku, GCP, Mercurial, Git
- Klika d.o.o.Ruby, Ruby on Rails, MySQL, RabbitMQ, JWT, Microservices, Fintech, Docker...
- OSB IT and EngineeringJavaScript, jQuery, Ruby on Rails, MySQL, Git
Experience
- REST APIs 8 years
- Redis 7 years
- Ruby on Rails (RoR) 7 years
- PostgreSQL 7 years
- Ruby 7 years
- JavaScript 7 years
- Microservices 4 years
Availability
Part-time
Preferred Environment
Linux Ubuntu, Sublime, Aptana, Git
The most amazing...
...thing I've coded is an engine for processing, generating, and parsing SWIFT transactions and messages.
Employment
Experience
- Promotions Management (Development)
Promotions Management is a web app used for creating and scheduling effective promotion campaigns, contests, and events for a given organization.
Technologies used: Node.js, Backbone.js, MongoDB - Immediate Insights (Development)
Immediate Insights is a powerful survey engine that enables survey management. It can be used as a stand-alone service to deploy surveys on your website(s) and client sites.
Technologies used: C#, WCF Services, ASP.NET MVC, Entity Framework, LINQ, ASP.NET SignalR, SQL Server, MongoDB, jQuery. - Atlas (Development)http://www.peoplenet.com
Atlas is a PhoneGap app used for time tracking employees or members of a given organization.
Technologies used: C#, WCF Services, Web API, Windows Azure, Entity Framework, LINQ, SQL Server, AngularJS, PhoneGap, jQuery mobile - Save Stand (Development)http://www.savestand.com
Save Stand is a web app that provides information to hunters about planning hunting season and hunting days. The application provides services for scheduling and reservation of
hunting stands so hunters can easily ensure their spot and plan their hunting seasons in the future.
Technologies used: Ruby on Rails, PostgreSQL, jQuery, Facebook API, Google API, Google Maps, Stripe, Amazon AWS - Trophy Stack (Development)
Trophy Stack is one of the leading web apps for amateur hunters in the United States. It’s a social network site for hunters.
Technologies used: Ruby on Rails, PostgreSQL, Redis, jQuery, Facebook API, Google API, Twitter API, Amazon AWS - Stowaway Cosmetics (via Toptal) (Development)https://stowawaycosmetics.com
Stowaway Cosmetics is an eCommerce site specialized in selling makeup. I was hired to build a new REST API that provides endpoints for an isomorphic app (Node.js + React.js
with Redux), using the Spree e-commerce framework. Besides that, I wrote migration scripts in Ansible, to migrate the database
from AWS RDS to Heroku.
Technologies used: Ruby, Ruby on Rails, Spree framework, PostgreSQL, Node.js, React.js, Redux, AWS, Heroku, and Ansible. - Pulsr (via Toptal) (Development)
Pulsr is a social discovery application meant to answer the age old question "What should we do tonight?"
By leveraging a large database of events and local businesses, and creating new channels for ambient social dialogue, Pulsr is an invaluable tool in leading a vibrant social life; thereby empowering people to get up and get out.
Skills
Languages
SQL, HTML5, Ruby, JavaScript, Visual Basic 6 (VB6), C#, Visual Basic .NET (VB.NET), Java, CSSFrameworks
AngularJS, Ruby on Rails (RoR), minitest, Sails.js, Windows Communication Framework (WCF), ASP.NET Web Forms, Entity, Bootstrap 3, ASP.NET MVC, ASP.NET Web API, Hibernate, PhoneGapLibraries/APIs
REST APIs, jQuery, Sidekiq, Node.js, Windows Forms, Backbone.js, LINQTools
Bitbucket, Sublime Text, Git, RSpec, GitLab, GitHub, TFS, Visual Studio .NET, Aptana, Eclipse IDE, Nginx, RabbitMQ, MercurialParadigms
Agile Software Development, Scrum, Object-oriented Programming (OOP), Microservices Architecture, Microservices, REST, Unit TestingPlatforms
Heroku, Linux, AWS EC2, Azure, DockerStorage
PostgreSQL, JSON, SQL Server Reporting Services (SSRS), Microsoft SQL Server, Redis, MongoDB, MySQL, Elasticsearch, AWS S3Other
Delayed_job, Windows Services, RESTful Microservices, APIs, AWS, IISIndustry Expertise
Fintech
Education
- Bachelor's degree in Computer Science2005 - 2011Univerzitet Dzemal Bijedic - Mostar, Bosnia and Herzegovina
