Mavis Tan
Blockchain Developer at MANTRA
Hong Kong, China
Summary
🤩
Rockstar🎓
Top SchoolMavis Tan is a blockchain developer with 10 years of engineering experience, currently building at MANTRA after six years advancing Layer 1 EVM-compatible and IBC features at Crypto.com. She specializes in backend and DevOps work for Cosmos SDK-based chains—contributions include improving integration tests, IBC relayer enhancements, RPC fixes, and performance-focused tooling for high-throughput chains like Cronos and Ethermint. Mavis blends low-level protocol debugging with test infrastructure and config automation (YAML→Jsonnet refactors, hermes/hermes upgrades, pystarport work), making complex distributed systems more reliable and maintainable. Her background spans full-stack and mobile projects early in her career, giving her a practical product-oriented mindset alongside core blockchain expertise. Notably, she has hands-on experience reconciling Ethereum semantics with Cosmos-based EVM implementations (eth_getProof, proposerAddress support), a niche that eases cross-chain interoperability challenges. Based in Hong Kong, she brings a pragmatic focus on testability and operational robustness to open-source blockchain ecosystems.
10 years of coding experience
11 years of employment as a software developer
Master of Science (M.Sc.) Computer Software Technology/Technician, Master of Science (M.Sc.) Computer Software Technology/Technician at The Hong Kong Polytechnic University
Github Skills (21)
json-rpc10
cosmos-sdk10
python10
testing10
evm10
configuration-management10
bc10
rpc10
go10
ethereum10
blockchain10
golang10
integration-testing10
go-modules9
dependency-management9
Programming languages (13)
Github contributions (5)
crypto-org-chain/cronos
Jun 2022 - Nov 2022
Cronos is the first Ethereum-compatible blockchain network built on Cosmos SDK technology. Cronos aims to massively scale the DeFi, GameFi, and overall Web3 user community by providing builders with the ability to instantly port apps and crypto assets from other chains while benefiting from low transaction fees, high throughput, and fast finality.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:1 release, 984 reviews, 14 commits in 4 months
Contributions summary:Mavis primarily focused on improving the integration tests within the Cronos blockchain project. They addressed issues in the gravity transfer integration tests by modifying test functions, renaming community, and refactoring code. Additionally, they worked on streamlining the integration test configurations by generating and refactoring various configurations. Furthermore, the user added tests for IBC timeouts and vesting accounts, and upgraded hermes.
ethereumweb3abilityblockchain-networkgamefi
crypto-org-chain/chain-main
Aug 2022 - Nov 2022
Cronos POS Chain⛓: Croeseid Testnet and beyond development
Role in this project:DevOps Engineer & Backend Developer
DevOps Engineer & Backend DeveloperContributions:134 reviews, 11 commits, 109 PRs in 2 months
Contributions summary:Mavis primarily focused on improving the integration tests and updating dependencies within the `crypto-org-chain/chain-main` repository, which is a Cronos POS Chain. Their contributions include updating the `pystarport` version, fixing integration tests related to Hermes, and refactoring the configuration files from YAML to JSONnet. They also addressed the duplication of `pystarport` and updated the Hermes version. The changes point towards a good understanding of the project's dependencies and testing infrastructure.
golangcrocosmos-sdkblockchaincrypto
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