William Cisotto
Lead Software Engineer at Mastercard
Porto, Porto, Portugal
Summary
👤
Senior🎓
Top SchoolWilliam Cisotto is a Lead Software Engineer based in Porto with over a decade of hands-on experience designing and delivering enterprise-grade Java and blockchain solutions. He blends deep Core Java and Spring expertise with proven system architecture and DevOps skills, having led teams and CI/CD/containerization efforts at banks and fintechs like Banco Itaú, Natixis, and Mastercard. At Mastercard he progressed from Senior Blockchain Engineer to Lead, driving CBDC initiatives, smart contract reviews and PoCs across multiple central bank projects, and bringing Solidity/Hardhat experience to large-scale payments work. Comfortable across databases (Postgres, Oracle, MongoDB), messaging (Kafka, ActiveMQ) and front-end stacks (React/Angular), he excels at translating research into production-ready services. A practical problem-solver and technical leader, he pairs an MSc in Blockchain and Digital Currency with an MBA for a rare mix of domain research and product-minded delivery. Notably, he has shepherded both low-level gas/security optimizations in smart contracts and high-level integration efforts for cross-border CBDC experiments.
8 years of coding experience
8 years of employment as a software developer
Fédération Internationale de l'Art PhotographiqueTechnical Information Technology, Technical Information Technology at Senai São PauloSolidity & Ethereum Blockchain Development, Solidity & Ethereum Blockchain Development at Encode ClubMaster of Science in Blockchain and Digital Currency, Master of Science in Blockchain and Digital Currency at University of Nicosia
English, Portuguese, French
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (15)
react5
docker4
deploying3
spring3
spring-boot3
java3
typescript2
java-bytecode2
rust2
commons2
maven2
jvm-bytecode2
solana2
spring-cloud2
microservices1
Programming languages (4)
Github contributions (5)
web3-payments/cross-pay-interface
Oct 2022 - Feb 2023
Contributions:14 reviews, 71 commits, 19 PRs in 4 months
reactdocker
wgcisotto/Java8_NewFeatures
Sep 2018 - Apr 2020
Project Java 8 new features
Contributions:4 PRs, 8 pushes, 4 branches in 1 year 7 months
commonsjvm-bytecodemavenjava-8new-features
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