Leandro Fernandes
Senior Data Engineer
Dallas, Texas, United States
Summary
👤
Senior🎓
Top SchoolLeandro Fernandes is a Senior Data Engineer based in Dallas with eight years of experience building resilient data-driven systems for the telecom sector. At Mobileum he led technical development of a Survey Analytics pipeline that generated roughly $700K in revenue and gathers daily feedback from thousands of roaming users, and he has practical experience fine-tuning LLMs for churn classification and exposing models via APIs. His strengths span PostgreSQL performance tuning, big data technologies, system architecture and production support, with a track record of turning operational issues into documented, repeatable solutions. He has driven integrations (including SSO via SAML) and company-wide monitoring deployments on AWS, aligning engineering, DBA and L1/L2 teams to reduce MTTR. Beyond product work, he contributes Python code to open-source monitoring tooling used internally, signaling a pragmatic commitment to observability and shared tooling. Trained in networks and telematics, he combines telecom domain knowledge with hands-on engineering to deliver measurable business impact.
8 years of coding experience
4 years of employment as a software developer
Bachelor's Degree, Computational Science, Bachelor's Degree, Computational Science at Politécnico da GuardaMaster in Networks Engineering and Telematic Services, Computer Systems Networking and Telecommunications, Master in Networks Engineering and Telematic Services, Computer Systems Networking and Telecommunications at Universidade do MinhoBachelor's degree in Computer Science, Computer Science, Bachelor's degree in Computer Science, Computer Science at Instituto Politécnico da Guarda
Portuguese, English
Github Skills (17)
openaf9
java7
hive6
sql6
hadoop5
big-data5
routines5
monitoring5
javascript4
sql-query4
presto4
scripting3
duckdb3
postgresql3
devops3
Programming languages (6)
Github contributions (5)
LeandroFernandes5/SantiagoTur
Apr 2020 - Sep 2020
Contributions:23 pushes in 4 months
LeandroFernandes5/mob-ai
Mar 2025 - May 2025
Contributions:28 pushes, 1 branch in 1 month
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