Rio de Janeiro, Brazil, UTC-03:00

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Go backend and protocol engineer — 8+ years in service-oriented architecture, 6+ years building blockchain infrastructure. Currently Lead Blockchain Engineer at NuConstruct on TOOL Node, a go-ethereum fork implementing TEE-attested distributed block building with 1-second sub-slots inside the 12-second Ethereum slot. Author of EVAA's official Go SDK, former Lead Core Developer of the Minter L1, and upstream contributor to Prysm, MEV-Boost, Cosmos IAVL, Tendermint tm-db, and btcsuite.

Open to: Senior / Lead Go roles — IC or tech lead — at MEV / orderflow teams, L1 / L2 protocols, RPC and indexing infrastructure, on-chain trading desks.

Languages. Go (primary, 7+ yrs), FunC, Tact, Solidity (read), SQL.

Ethereum. go-ethereum (extensive forking), Prysm consensus client, MEV-Boost, builder / relay APIs, Engine API, Intel TDX / SGX, attested TLS, Automata Linux verifiable execution.

Cosmos / Tendermint. Tendermint Core, Cosmos SDK, ABCI, IAVL+, tm-db, DPoS, in-core AMM with order book, RLP.

TON. Custom FunC highload-wallet contracts, TVM gas optimisation, jetton / NFT standards, ADNL / DHT / Overlay networking, lite-server pool management, tonutils-go, evaa-go-sdk.

Infrastructure. gRPC, grpc-gateway, Protobuf, PostgreSQL, ClickHouse, Kafka, Redis, Kubernetes, Grafana / Prometheus.

December 2024 – present · Remote (UK) · nuconstruct.xyz

Building TOOL (Trustless Orderflow Operations Layer) — a P2P, TEE-attested block-building protocol that replaces monolithic MEV-Boost builders with a distributed network of operators, introduces 1-second sub-slots inside the 12-second Ethereum slot, and provides pre-confirmation of execution before finalisation.

• Lead engineer on the go-ethereum fork. Designed the tool/ package (pool, execution engine, blockchain wrapper) driving the sub-slot lifecycle, and the relay/ package coordinating nodes and external systems.
• Built the orderflow ingress, intermediate-state publication, and dynamic transaction-addition mechanics enabling searchers and dApps to receive inclusion feedback every sub-slot.
• Drove the Automata Linux integration for verifiable execution — container / binary / config attestation, attested TLS on the TEE port, on-chain anchoring of attestations.

Upstream contributions (Ethereum core infrastructure):

• flashbots/mev-boost #855 — race fix in getPayload version negotiation across relays (could cause a missed slot).
• OffchainLabs/prysm #15871 — epoch-transition flag on head events when the first slot of an epoch is missed or reorged. "h/t to the NuConstruct team for reporting this."
• OffchainLabs/prysm #15548 — validateConsensus post-state-root lookup fix. "Reported by NuConstruct."
• OffchainLabs/prysm #15541 — payload-attribute event firing on early blocks (event feed alignment with payload-id cache).

April 2024 – March 2025 · Remote · evaa.finance

Designed EVAA's official Go SDK and built an end-to-end production liquidator on top of it. Held a leading position on EVAA mainnet for an extended period against active competitors.

• Authored evaafi/evaa-go-sdk — the protocol's official Go integration layer, published under the EVAA organisation and listed on pkg.go.dev. Five packages: config (Main / LP / Testnet pool selection), asset, price (oracle prices and packaging), principal (health factor, predictions, liquidatability checks), transaction (supply / withdrawal / liquidation).
• Production liquidator bot (Go). Real-time indexer over the EVAA master via TonAPI + a redundant pool of public / private lite-clients; multi-source price aggregation (EVAA middleware + ICP) with per-asset medians across 4 oracles and continuous pump / dump scenario simulation to rank candidates.
• Custom FunC highload-wallet contracts (V2 / V3 / V4) with a 180-second message TTL and an in-payload uniq / "mining" field exploiting TVM message-hash ordering to gain priority during contention.
• Multi-RPC broadcast layer — every external message fan-outs in parallel to TonAPI + 9 independent providers (TonCenter, TonHub, EVAA RPC, GetBlock, RockX, Orbs, Ankr, Chainstack, QuickNode) to minimise inclusion latency.
• DEX integration for collateral disposal via swap.coffee across DeDust, STON.fi v1 / v2, TONCO, with TLB validation of every constructed swap; tsTON unstaking via the staker SC.
• Adapted the bot through the v2 protocol upgrade (one-shot bad-debt liquidation, custom-payload chaining into DeDust). "His programming skills in Go and deep blockchain understanding helped him be the leading liquidator for a long time." — public recommendation from a competitor.

November 2022 – December 2024 · Remote (United States) · ankr.com

Multi-chain Web3 API platform (45+ blockchains). Built Go backend services across payments, user-manager, statistics, and accounting.

• Implemented the Premium plan billing surface — per-API-credit Pay-as-You-Go and the recurring "Deal" subscription; Stripe (one-time and recurring) plus parallel on-chain USDT / USDC payment flows.
• Owned the user-manager domain — JWT-scoped private endpoints (rpc.ankr.com/<chain>/<JWT>), Projects, Team Accounts with RBAC, identity via MetaMask / Google / GitHub.
• Built the usage-statistics pipeline powering per-project request, latency, and cost dashboards — Kafka ingest, ClickHouse aggregation, PostgreSQL state, Redis hot paths, Grafana / Prometheus.

September 2019 – November 2022 · Remote (UK) · github.com/MinterTeam

L1 DeFi blockchain on Tendermint with DPoS, in-core AMM with order book, and ETH / BSC bridges.

• Lead developer of minter-go-node, the official Go implementation. Owned the Tendermint integration, IAVL+ state tree, transaction execution layer, and Minter 2's in-core AMM with Order Book (AMMOB).
• Owned node-grpc-gateway — single Protobuf → gRPC + REST + WebSocket + OpenAPI / Swagger — and minter-go-sdk v2.

Upstream fixes shipped with @klim0v attribution:

• cosmos/iavl #324 — orphan-node cleanup in DeleteVersions + new DeleteVersionsRange API. Released in IAVL v0.14.3.
• tendermint/tm-db #134 — bounded GoLevelDB iterator range, measurable iteration speedup during IAVL pruning. Released in tm-db v0.6.3.
• btcsuite/btcutil #161 — BIP-32 leading-zero ser256(p) derivation fix + regression test.

Dr.Cash — Go microservices for an international CPA network (Go, gRPC, NATS, ClickHouse, Kubernetes). Wormsoft — Go / PHP backend, REST APIs, GitLab-webhook deploy service. Vitbiomed — Bitrix → Laravel migration. Darvin Studio / Be on TOP — Symfony CMS, blogs and online stores.

• TON Smart Challenge #2 — 1st place out of 181 participants (FunC, five gas-optimised smart-contract tasks).
• TON Smart Challenge #5 and TON Tact Challenge — participant.

• GolangConf 2020 — "Tools for Generating API Code and Documentation": comparison of swagger-codegen, go-swagger, swaggo/swag, and grpc-gateway. Video.
• Netology — Golang Course Teacher (Oct 2020 – Feb 2021). Sample lesson.
• Minter Demo Day 2019 — Minter architecture overview. Video.
• Articles: Habr profile · Medium · English version on Level Up Coding.

Vladimir State University — B.Sc. Applied Mathematics & Computer Science, 2013 – 2017.

Russian (native) · English (professional working) · Portuguese (basic).