Razvan Apostu
Co-founder & CPO at Van Software
Iași, Romania
Summary
👤
Senior🎓
Top SchoolRazvan Apostu is a product-focused engineer and designer with nine years of experience building web and Web3 products as a serial founder and current Co-founder & CPO at Sablier. He blends full‑stack engineering, product design, and leadership—previously running Van Software and founding ConnSuite and Sycity—to ship user‑centered solutions from concept to market. His hands‑on contributions include backend work on DeFi tooling (notably maintaining Pods adapters for DeFi Pulse to fetch TVL across Ethereum and Polygon), reflecting a strong grasp of blockchain data integrations. Based in Iași, Romania, he pairs entrepreneurial grit with pragmatic technical depth and a designer’s eye, making him comfortable toggling between code, UX, and product strategy. An interesting detail: he repeatedly returns to roles that combine design, engineering, and product leadership, signaling a preference for end‑to‑end ownership.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Bachelor's degree at Universitatea „Alexandru Ioan Cuza” din IașiEmil Racovita Iasi National College
English, Romanian, German
Stackoverflow
221reputation
12kreached
10answers
4questions
Github Skills (19)
javascript10
f10
derivative10
ethereum10
wpgraphql9
wordpress-graphql9
subgraph9
graphql9
polygon8
polygons8
background-color6
listview6
flexbox6
android6
android-layout6
Programming languages (7)
Github contributions (5)
ConcourseOpen/DeFi-Pulse-Adapters
Oct 2021 - Oct 2021
DeFi Pulse Adapters - Official Repository so DeFi projects can keep their metrics up to date on DeFi Pulse
Role in this project:
Backend Developer
Backend DeveloperContributions:9 commits in 5 days
Contributions summary:Razvan primarily contributed to the implementation and maintenance of the Pods adapter within the DeFi Pulse Adapters repository. Their commits focused on adding and modifying functionalities to fetch TVL data for the Ethereum and Polygon networks, specifically related to Pods derivatives. The user also refactored code to integrate a tokenHolderMap system and updated the category of the Pods project for better organization. These changes involved modifications to subgraph queries and constant definitions.
keepblockchainadapterscryptocurrency-exchangespulse
sablier-labs/subgraphs
Jul 2023 - Apr 2025
Subgraphs for Sablier V2 token streaming protocol
Contributions:13 reviews, 51 PRs, 251 pushes in 1 year 9 months
blockchaincryptoasset-streamingdecentralized-financedefiethereum
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