Tomo Ferega
Scala Developer in Zagreb, Croatia
Member since July 16, 2013
With over nine years of experience in software development, Tomo is a seasoned and capable software engineer and solution architect with an excellent track record of delivering high-quality solutions. He has worked with a variety of technologies ranging from front-end to back-end, and he specializes in server programming mostly with Scala and Java. He is particularly interested in concurrent and distributed fault-tolerant software.
Tomo is now available for hire
Portfolio
- EveryonePrint A/SScala, Java, Wicket, JavaMail, TDD
- KaminoScala, Akka, PostgreSQL, TypeScript, Vue.js, D3.js, Cassandra
- Mentat Labs d.o.o.Scala, Java, PostgreSQL, Akka, Lift, Selenium
Experience
- Scala, 8 years
- Functional Programming, 7 years
- Akka, 7 years
- Java, 7 years
- Eclipse IDE, 6 years
- JavaScript, 5 years
- PostgreSQL, 5 years
- Test-driven Development (TDD), 2 years
Availability
Full-time
Preferred Environment
Linux with IntelliJ IDEA and Git
The most amazing...
...thing I've made is a streaming data transfer pipeline for streams on a master-slave topology with protections against hanging streams and minimal resource use.
Employment
Senior Full-stack Developer
2017 - 2018EveryonePrint A/S- Implemented a streaming data transfer pipeline for arbitrary streams between servers and clients on a master-slave topology with strong protections against hanging streams and minimal resource usage (avoiding buffering in case of large files).
- Created a service for monitoring and managing a POP3, IMAP, or Exchange email server inbox, monitoring for incoming mail, downloading, and parsing it.
- Implemented pages for all features requiring front-end changes in Wicket, including several custom widgets.
- Created services for log file transfer, event logging, document conversion, and a templating engine.
Technologies: Scala, Java, Wicket, JavaMail, TDDSenior Full-stack Developer
2016 - 2017Kamino- Designed and implemented the relational database model in PostgreSQL along with an Akka HTTP CRUD/REST service.
- Helped with an implementation of the data-series database in Cassandra.
- Worked on UI using TypeScript with Vue.js, including implementing a variety of chart components using D3.js.
- Optimized chart rendering and display performance.
- Created an alerting service integrated with several distribution channels, including Slack, Skype, and email.
Technologies: Scala, Akka, PostgreSQL, TypeScript, Vue.js, D3.js, CassandraLead Developer
2015 - 2016Mentat Labs d.o.o.- Co-created and served as technical lead and full-stack developer for a Sweden-based startup in the financial sector with a responsive single-page web application for a flagship product.
- Using Java, Akka, and Selenate, built a high-throughput concurrent and distributed system for automating placing orders and other common actions on a major online retailer.
Technologies: Scala, Java, PostgreSQL, Akka, Lift, SeleniumLead Developer
2011 - 2015Element d.o.o.- Created Selenate, a mini framework built on top of Selenium, to facilitate the process of gathering data from public websites.
- Worked as project lead on a team of three programmers creating a large multi-national financial and credit analysis service.
- Managed the production environment for several mission-critical products.
- Wrote a S/MIME connectivity module in Scala using BouncyCastle (encryption/decryption and signing/verification).
- Created a full implementation of RNIF messaging protocol in Scala.
Technologies: Scala, Java, PostgreSQL, Akka, Lift, SeleniumDeveloper
2009 - 2011Element d.o.o.- Designed and wrote the database for the new website of a medium-sized publishing company.
- Created a system for extracting problems from a math textbook and cataloguing, rendering, and displaying them on the publisher's web page.
- Wrote an automated identity verification service using SSN numbers.
- Worked as part of a small team in the development of a number of websites.
- Started working with Scala and functional programming.
- Worked with a small team on all aspects of the development process of a large multi-national financial and credit analysis service.
- Worked extensively with Selenium in a non-testing environment, including automated information gathering from public websites.
Technologies: PHP, Scala, PostgreSQL, Selenium
Experience
- Procedural Terrain Generation Tool (Development)https://github.com/tferega/terra-gen
This tool generates terrain height-maps using a variety of algorithms. Currently implemented algorithms are random noise, diamond-square, voronoi diagrams, and probability function. They can be mixed and matched as needed.
- Process Runner (Development)https://github.com/tferega/process-runner
A simple Scala library that greatly simplifies certain use-cases of native process running.
- Selenate (Development)https://github.com/tferega/selenate
This is a mini-framework I created that is built on top of Selenium. Selenate decouples Firefox sessions from client code, facilitating management. The server-side is written in Scala with Akka. The client-side is written in Java.
- Scala SSL Disabler (Other amazing things)https://github.com/tferega/scala-ssl-disabler/tree/master/scala-ssl-disabler
A class capable of disabling the JVM's SSL security.
Skills
Languages
Java, Scala, C#, JavaScript, PHP, CFrameworks
Selenium, Akka, Lift, JUnitTools
Eclipse IDE, IntelliJ IDEA, CasperJSParadigms
Functional Programming, Concurrent Programming, Procedural Programming, Test-driven Development (TDD)Platforms
Linux, WindowsOther
LogbackLibraries/APIs
BouncyCastle, jQueryStorage
PostgreSQL
