Valerii Ryndin
Full Stack Developer at Sberbank
Moscow, Moscow City, Russia
Summary
👤
Senior🎓
Top SchoolValerii Ryndin is a Full Stack Developer with around a decade of hands-on experience and a 5+ year focus on back-end engineering, DevOps, and automation, currently leading technical delivery at Sberbank. He has a proven track record migrating critical applications into secure bank infrastructure, building DevOps pipelines, monitoring services, and rewriting complex front-end tools using SolidJS while integrating enterprise SSO and data-masking solutions. Valerii contributes to notable open-source work, including backend fixes and dependency simplifications for Parity’s Polkadot SDK, showing attention to developer ergonomics and build reliability. Comfortable with Linux as his daily driver for nearly a decade, he consumes professional content in English extensively and is steadily improving his active communication in the language. Practical, detail-oriented, and initiative-driven, he combines product-minded engineering with cross-team collaboration in regulated environments.
10 years of coding experience
3 years of employment as a software developer
Incomplete bachelor's degree, Applied Mathematics and Information Science (1 year), Public Administration (2,5 years), Incomplete bachelor's degree, Applied Mathematics and Information Science (1 year), Public Administration (2,5 years) at Higher School of Economics
Russian, English, French
Github Skills (9)
substrate10
error-handling10
polkadot-js10
rust10
polkadot10
blockchain10
wasm-pack8
rust-wasm8
cicd6
Programming languages (10)
Github contributions (5)
paritytech/polkadot-sdk
Jan 2024 - Apr 2024
The Parity Polkadot Blockchain SDK
Role in this project:
Backend Developer
Backend DeveloperContributions:15 reviews, 4 PRs, 46 comments in 3 months
Contributions summary:Valerii contributed to the `paritytech/polkadot-sdk` repository by addressing dependency conflicts and deprecation warnings, specifically by replacing `ansi_term` with `console-rs/console` to reduce dependencies. They also refactored and modified error types related to PVF (Parallel Validation Framework), including changes in `polkadot/node/core/pvf/common/src/error.rs` and `polkadot/node/core/pvf/src/error.rs`. Furthermore, the user unified the collator overseer builder, making wasm build errors more user-friendly and refactoring the `security` module.
blockchaincumuluspolkadotsubstrate
maksimryndin/goral
Oct 2023 - Mar 2025
Simple observability daemon for small projects.
Contributions:11 PRs, 156 pushes, 16 branches in 1 year 4 months
livenessliveness-probelogcollectionmetricsmonitoring
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