Yumin Xia

Co-founder & CTO

• Building an AI agent that serves investors and traders across every part of their work, from research to execution.
• Alva turns any kind of idea, whether tracking a narrative, semantic trading or backtesting a strategy, into an agent that does the work for you. It shows up as a live playbook, an alert, or an agent that keeps tracking on your behalf.

CTO

• Lead engineering for Galxe, the growth & quest platform for Web3, where projects grow their communities through quests and on-chain credentials.
• Lead Gravity, the fastest EVM L1 blockchain: 1 gigagas/s throughput with sub-second finality, built on a pipelined AptosBFT consensus, a parallel EVM and an optimized execution client (litepaper).
• Co-author of Grevm 2, a hybrid DAG + optimistic parallel EVM reaching 11.25 gigagas/s on Uniswap workloads and using 95% less CPU than Block-STM when transactions can't be parallelized.
• Co-author of Gravity Reth, a Reth fork with parallel EVM, parallel merklization and an asynchronous pipeline: ~41K TPS (~1.5 gigagas/s), over 4× faster than baseline Reth.

Staff Engineer, Compiler Team · Santa Clara, CA

• Designed the Packet Header Vector (PHV) allocation algorithm of Intel's P4 compiler for Tofino™, the fastest P4-programmable switch chips, now open source in p4c.
• Built an action-constraint solver several orders of magnitude faster than modeling the problem directly in Z3.

Tech Lead, Blockchain Team · Cupertino, CA

• Core developer of Lino Blockchain: author of the sybil-proof reputation algorithm; architecture of the move-based bank API and event manager; price feeding, donation and developer/IDA modules.
• Full-stack developer of DLive.tv, the #1 DApp of 2019: a payment queue that merges similar blockchain transactions with exactly-once delivery (2PC); the livestream player; RTMP server optimization, transcoding scheduler and low-latency HLS over HTTP chunked transfer.
• Upstream contributions to Tendermint (memory-leak fixes, RocksDB support), DPlayer and the RocksDB Go wrapper.

Software Engineering Intern, Display & Video Ads · Mountain View, CA

• Built a protobuf search engine that indexes 2.4M protobufs/hour out of 60 GB of binary logs into Bigtable and answers SQL-like exact/fuzzy queries, including over repeated fields, across 60M records in under a second.
• Built a screen-diff regression tool that replays traffic against two rendering-server builds and reports visual and HTML differences on every code review.

Co-founder & CTO, Chongqing PERK Culture Communication Co., Ltd

• Co-founded PerkSummit®, one of the most influential student conferences in southwestern China. Shaped the idea, designed the program and events, and helped grow it from scratch as a founding team member. It still runs today as a non-profit, led by the next generation of organizers.
• Built “.Flip”, the web platform behind it: applications, enrollment, payments, achievements and a social network, used by thousands of students. PHP (CodeIgniter), Bootstrap, jQuery, MySQL.

M.S. in Computer Science · GPA 3.97 / 4.00

• Researched networking and distributed systems at the Internet Research Laboratory with Prof. Lixia Zhang. Designed and built NDNS, a DNS for Named Data Networking (security schema, denial of existence, caching resolver, validator, certificate fetcher), published at ICCCN 2017 (source).
• Implemented and evaluated NDN cache policies on ndnSIM (repo).

B.Eng. in Computer Science and Technology · Major GPA 88 / 100

• Captain of ACM-ICPC team “StRcPy” and assistant coach of XJTU: Silver Medal, ICPC Asia Regional Guangzhou 2014; Gold Medal (5th), Multi-Provincial Contest Chengdu 2013; Gold Medal (1st), Shaanxi Provincial Contest 2013.
• Built XJTU's web-based ICPC training system: remote code submission and judging, code management and training-plan management.

Go code generator

• Generates idiomatic, type-safe Go for a multi-level cached data-access layer over MySQL, Redis and memory, with syntax and type checks on SQL statements.
• Handles 100K+ QPS in production with a few lines of SQL and cache-policy config.