Luka Šaravanja - Software Engineer

Q: Where is Luka based?

Luka is based in Osijek, Croatia .

Q: What languages does Luka speak?

Luka speaks the following languages: English (Advanced), German (Elementary) .

Q: How many years of experience does Luka have?

Luka has at least 14 years of experience. During this time, Luka has worked in at least 6 different roles and for 8 different companies . The average length of individual experience is 2 years and 9 months . Note that Luka may not have shared all experience and actually has more experience.

Q: What is Luka's latest experience?

Luka's most recent position is Software Engineer at Onetrail .

Q: What companies has Luka worked for in recent years?

In recent years, Luka has worked for Onetrail , EPAM Systems , and Agency04 .

Q: Which industries is Luka most experienced in?

Luka is most experienced in industries like Information Technology , Sport , and Transportation . Luka also has some experience in Tourism and Retail .

Q: Which business areas is Luka most experienced in?

Luka is most experienced in business areas like Information Technology , Product Development , and Operations . Luka also has some experience in Customer Service , Quality Assurance , and Sales .

Q: Which industries has Luka worked in recently?

Luka has recently worked in industries like Information Technology .

Q: Which business areas has Luka worked in recently?

Luka has recently worked in business areas like Information Technology , Product Development , and Quality Assurance .

Recommended expert

Osijek, Croatia

Experience

Oct 2022 - Present

3 years 6 months

Utrecht, Netherlands

Software Engineer

Onetrail

Wrote maintainable and extensible code in a team environment
Developed and maintained microservices with Java and Quarkus, integrating AngularJS and JavaServer Faces (JSF) for both modern and legacy components
Migrated and rewrote legacy applications, introducing new features and improving deployments using Docker, WildFly, and Linux servers
Implemented asynchronous messaging flows with ActiveMQ, enabling scalable and decoupled communication between services
Managed and optimized databases, including PostgreSQL and MongoDB, ensuring performance and reliability
Designed and maintained search and analytics solutions with Elasticsearch and Kibana, supporting advanced system monitoring and data insights
Administered and managed server infrastructure, supporting CI/CD pipelines and ensuring high availability of applications

Nov 2021 - Sep 2022

11 months

Osijek, Croatia

Software Engineer

EPAM Systems

Developed and maintained microservices in Scala and Java, leveraging Akka for concurrency and scalability
Designed and integrated REST APIs, ensuring performance and reliability in distributed systems
Worked extensively with AWS, Elasticsearch, Git, Jenkins, and Jira in a DevOps-driven environment
Stored, retrieved, and manipulated large datasets to support close analysis of system performance and capabilities
Implemented NLP processing pipelines and wrote automation scripts to streamline workflows and repetitive tasks
Delivered maintainable and extensible code while collaborating in a cross-functional team environment

Sep 2020 - Oct 2021

1 year 2 months

Zagreb, Croatia

Software Engineer

Agency04

Built modern applications using Java, Scala, Spring Boot, JavaScript, and React, and supported the company's development and testing processes
Built and maintained monolithic applications in Scala and Java, applying solid data modeling practices for scalable solutions
Worked in an Agile/Scrum environment, collaborating closely with cross-functional teams
Integrated custom plugins into a DevOps platform, streamlining workflows and improving developer productivity
Designed and managed complex Gradle builds, ensuring reproducible and efficient CI/CD pipelines
Consulted with the product manager to identify minimum viable products and decomposed feature sets into small scoped user stories

May 2018 - Sep 2020

2 years 5 months

Osijek, Croatia

Junior Backend Developer

EM2

Developed Java web applications using Spring Framework (Spring Boot), focusing on clean architecture and maintainable code
Designed and implemented relational (SQL) and NoSQL databases to support scalable business applications
Contributed to building a metro management system and a timeslot reservation system, ensuring reliable backend logic and efficient data handling

May 2016 - May 2018

2 years 1 month

Osijek, Croatia

Translator

Cetratour

Translated for English-speaking tourists

Jan 2016 - Jun 2016

6 months

Osijek, Croatia

Sales Associate

Studio Moderna

Assisted customers and processed sales transactions as a sales associate

May 2015 - Aug 2015

4 months

Osijek, Croatia

Backend Developer Intern

BetaWire

Developed PHP applications using Laravel framework during a backend developer internship

May 2012 - May 2016

4 years 1 month

Osijek, Croatia

Football Referee

Croatian Football Federation

Officiated football matches as a referee

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Sport, Transportation, Tourism, and Retail.

Information Technology

Sport

Transportation

Tourism

Retail

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Operations, Customer Service, Quality Assurance, and Sales.

Information Technology

Product Development

Operations

Customer Service

Quality Assurance

Sales

Summary

Software engineer with 5+ years of experience in Java backend development and full-stack system design, skilled in building scalable microservices, integrating legacy systems, and delivering maintainable, high-performance solutions. Experienced in designing and optimizing data storage, low-latency search infrastructure, and end-to-end backend systems. Passionate about AI/ML technologies and exploring ways to integrate intelligent solutions into software systems.

Skills

Akka
Mongodb
Postgres
Kubernetes
Aws
Bootstrap
Css
Docker
Elasticsearch
Quarkus
Activemq
Jms
Angularjs
Javaserver Faces (Jsf)
Jsf
Angular
Git
Hibernate / Jpa
Gradle
Groovy
Html
Java
Spring
Javascript
Jenkins
Jira
Junit
Nosql
Oop
Rabbitmq
React
Rest
Scala
Springboot
Sql
Microservices
Wildfly
Python
Linux
Ci/cd
Maven
Php (Laravel)
Database Design (Sql, Nosql)

Languages

English

Advanced

German

Elementary

Education

Oct 2018 - Jun 2019

Universitat Politècnica de Catalunya

Telecommunications · Barcelona, Spain

Oct 2017 - Jun 2021

Faculty of Electrical Engineering

Master's degree in telecommunications · Telecommunications · Osijek, Croatia

Oct 2013 - Jun 2017

Faculty of Electrical Engineering

Bachelor’s degree in Electrical Engineering · Electrical engineering · Osijek, Croatia

...and 1 more

Certifications & licenses

Spring Boot Summer School

Statistics

Experience

Total positions 8

Experience in Information Technology 6 y

Avg length 1 y 10 m

Longest experience 4 y

Global Experience

Countries worked in 2 (Croatia, Netherlands)

Primary country Croatia

Expertise

Recent roles Software Engineer, Junior Backend Developer, Translator

Main industries Information Technology, Sport, Transportation

Main business areas Information Technology, Product Development, Operations

Qualifications

Highest degree Master

Certifications earned 1

Profile

Created

November 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Do you have questions? Here you can find further information.

Where is Luka based?

Luka is based in Osijek, Croatia.

What languages does Luka speak?

Luka speaks the following languages: English (Advanced), German (Elementary).

How many years of experience does Luka have?

Luka has at least 14 years of experience. During this time, Luka has worked in at least 6 different roles and for 8 different companies. The average length of individual experience is 2 years and 9 months. Note that Luka may not have shared all experience and actually has more experience.

What roles would Luka be best suited for?

Based on recent experience, Luka would be well-suited for roles such as: Software Engineer, Junior Backend Developer, Translator.

What is Luka's latest experience?

Luka's most recent position is Software Engineer at Onetrail.

What companies has Luka worked for in recent years?

In recent years, Luka has worked for Onetrail, EPAM Systems, and Agency04.

Which industries is Luka most experienced in?

Luka is most experienced in industries like Information Technology, Sport, and Transportation. Luka also has some experience in Tourism and Retail.

Which business areas is Luka most experienced in?

Luka is most experienced in business areas like Information Technology, Product Development, and Operations. Luka also has some experience in Customer Service, Quality Assurance, and Sales.

Which industries has Luka worked in recently?

Luka has recently worked in industries like Information Technology.

Which business areas has Luka worked in recently?

Luka has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

What is Luka's education?

Luka holds a Master in Telecommunications from Faculty of Electrical Engineering and a Bachelor in Electrical engineering from Faculty of Electrical Engineering.

Does Luka have any certificates?

Luka has 1 certificate: Spring Boot Summer School.

What is the availability of Luka?

Luka is immediately available full-time for suitable projects.

What is the rate of Luka?

Luka's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.