Valter Balegas
Researcher, Engineer, Creatorbalegas at live dot com
Co-founder of ElectricSQL. CRDT researcher since 2011.
balegas at live dot com
Now building ElectricSQL, a sync layer for modern apps that empowers developers to create reactive, realtime, local-first applications directly on Postgres.
Selected Publications
IPA: Invariant preserving applications for weakly-consistent databases
Valter Balegas, Sérgio Duarte, Carla Ferreira, Rodrigo Rodrigues, Nuno Preguiça. VLDB 2019.
Just-Right Consistency: reconciling availability and safety
Marc Shapiro, Annette Bieniusa, Nuno Preguiça, Valter Balegas, Christopher Meiklejohn. Arxiv.
Geo-replication: Fast if possible, consistent if necessary
Valter Balegas, Cheng Li, Mahsa Najafzadeh, Daniel Porto, Allen Clement, Sérgio Duarte, Carla Ferreira, Johannes Gehrke, Joao Leitao, Nuno Preguiça, Rodrigo Rodrigues, Marc Shapiro, Viktor Vafeiadis. IEEE Data Engineering Bulletin, 2016.
Write fast, read in the past: Causal consistency for client-side applications
Marek Zawirski, Nuno Preguiça, Sérgio Duarte, Annette Bieniusa, Valter Balegas, Marc Shapiro. Middleware 2015.
Putting the Consistency Back Into Eventual Consistency
Valter Balegas, Mahsa Najafzadeh, Sérgio Duarte, Carla Ferreira, Marc Shapiro, Rodrigo Rodrigues, Nuno Preguiça. EuroSys 2015.
Extending eventually consistent cloud databases for enforcing numeric invariants
Valter Balegas, Diogo Serra, Sergio Duarte, Carla Ferreira, Marc Shapiro, Rodrigo Rodrigues, Nuno Preguiça. SRDS 2015.
Past Work Experience
2020 - 2022
Senior Software Engineer
Oracle - MySQL (Replication)
Lisboa, Portugal
2019
Senior Software Engineer
Concordant.io
2017 - 2018
Senior Software Engineer/Pivotal Training Partner
EInnovator IT Serviced - Software Engineering School
Lisboa, Portugal
2014, 3 Months
Intern
Basho inc.
Remote
Education
2017
Ph.D. in Computer Science
Invariant preservation in geo-replicated data stores
Advised by Nuno Preguiça, Universidade NOVA de Lisboa
2012
M.Sc. in Computer Science and Engineering
Key-CRDT Stores
Advised by Nuno Preguiça, Universidade NOVA de Lisboa
2009