Kirill Fomichev
CTO at Scalable Solutions AG
Valencia, Valencian Community, Spain
Summary
🤩
Rockstar🎓
Top SchoolKirill Fomichev is a results-driven CTO with over a decade of experience building high-performance fintech, trading, and blockchain systems from MVP to bank-ready platforms. He has led 180+ engineers across product, security and delivery, driving architectural governance, SDLC, and compliance programs that achieved SOC1/SOC2 readiness and ISO27001 preparation. Previously he scaled a matching engine from 15k to 100k+ TPS and cut latency to microsecond ranges while introducing extensive automated testing and CI/CD. Kirill is a hands-on backend and crypto engineer who contributes to major open-source projects such as Solana, EthereumJS, Node.js crypto modules and bitcoin libraries, bringing deep expertise in cryptography, performance tuning and Rust/Go/JS ecosystems. Based in Valencia, he combines systems-level technical depth with people and process leadership—raising eNPS and launching an internal IT audit service that found and remediated critical risks. A practical innovator, he’s equally comfortable refactoring core crypto primitives and defining governance to make large engineering organizations auditable and resilient.
13 years of coding experience
11 years of employment as a software developer
Engineer's degree, Cybersecurity, Engineer's degree, Cybersecurity at ITMO UniversityManagement, Management at International Management Institute, Saint Petersburg
Русский, Английский
Stackoverflow
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Github Skills (67)
transaction10
benchmark10
testing10
http10
bitcoins10
smart-contracts10
crypto10
transactional10
javascript10
performance-monitor10
protocol-buffers10
elliptic-curve-cryptography10
dockers10
ecdsa10
performance-optimization10
Programming languages (17)
Github contributions (5)
rpcpool/yellowstone-grpc
Oct 2022 - Mar 2023
solana geyser grpc service
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 reviews, 49 commits, 415 PRs in 5 months
Contributions summary:Kirill primarily focused on modifying the gRPC service for the Solana geyser plugin. They added functionality to accept a string for channel capacity and made changes to filter account and transaction data, including support for block metadata. Furthermore, the user integrated support for transaction broadcasting and implemented TLS support for the client. The contributions enhance the gRPC service's capabilities for subscribing to and filtering Solana blockchain data.
bitpay/bitcore-lib
Oct 2015 - Oct 2018
A pure and powerful JavaScript Bitcoin library
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 PRs, 42 comments, 5 issues in 3 years
Contributions summary:Kirill primarily focused on fixing and improving the `bitcore-lib` library. Their contributions included correcting errors in script functions, dropping cached values for input/output amounts in transactions, and making the network object immutable. They also addressed issues with transaction sorting and the `fromObject` function, ensuring the library's robustness. Furthermore, the user fixed an issue with the `PrivateKey.toBuffer` function.
javascriptcryptocurrencybitcoinbitcoin-javascript
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