Valdis Vītoliņš
Senior Software Engineer at Netcracker Technology
Latvia
Summary
🤩
Rockstar🎓
Top SchoolValdis Vītoliņš is a Senior Software Engineer from Latvia with 16 years of experience building and operating full-stack, integrated systems from concept through migration and long-term maintenance. He specializes in backend and systems work—Java/Spring Boot microservices, Kafka, Cassandra—and has built real-time telecom components such as a Quota Cache Manager for Online Charging Systems. As a longtime systems administrator and consultant he has led migrations to open-source stacks, implemented enterprise tooling and trained engineers across public and private sectors. He contributes to notable open-source projects like eSpeak NG, improving core speech-synthesis data and language support, and has authored Latvian TTS rules. His background also includes teaching university courses in databases and networks, and hands-on automation and testing expertise across Selenium, Mockito and other frameworks. That blend of production-grade backend engineering, open-source linguistics work and practical teaching makes him effective at turning complex technical requirements into maintainable, auditable solutions.
15 years of coding experience
18 years of employment as a software developer
Doctor Computer science, Doctor Computer science at Latvijas Universitate
Latvian, English, Russian
Stackoverflow
63reputation
433reached
5answers
0questions
Github Skills (15)
c1710
speech-synthesis10
c-programming10
c1110
refactor9
linguistics9
refactoring9
lexical-analysis9
json6
maven6
java-native-interface6
junit6
apache6
protocol-buffers6
java6
Programming languages (8)
Github contributions (5)
espeak-ng/espeak-ng
Dec 2019 - Sep 2022
eSpeak NG is an open source speech synthesizer that supports more than hundred languages and accents.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 1 review, 315 commits in 2 years 9 months
Contributions summary:Valdis's commits primarily involve modifications to the `compiledata.c` and `dictionary.c` files, which are core to the eSpeak NG speech synthesizer's data compilation and dictionary functionality. These changes include updates to keywords, conditions, properties, and intonation data, indicating a focus on refining the phonetic and linguistic aspects of the speech synthesis engine. Additionally, changes in `dictionary.c` address issues with character groups, which can improve the pronunciation of text. The user also made changes to address code syntax issues.
synthesizerespeak-ngsynthesisespeakandroid
rhdunn/espeak
Dec 2015 - Dec 2019
eSpeak NG is an open source speech synthesizer that supports 101 languages and accents.
Role in this project:Back-end Developer
Back-end DeveloperContributions:441 commits, 8 comments in 4 years
Contributions summary:Valdis primarily contributed to the `espeak` repository by integrating changes from a remote branch, likely merging updates from the main project. The code changes mainly involved modifications to the source code, specifically the `compiledata.c` file, and dictionary related source files. These changes appear to be related to modifications of keywords, and code refactoring, suggesting improvements to the core functionality of the speech synthesizer.
synthesizerespeak-ngsynthesisspeech-recognitionespeak
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