{ "$schema": "https://raw.githubusercontent.com/jsonresume/resume-schema/v1.0.0/schema.json", "basics": { "name": "Ivan Blinov", "label": "Data & AI Platform Architect", "email": "contact@ivanblinov.com", "url": "https://ivanblinov.com/", "summary": "Hands-on data and AI platform architect. I build data platforms where the numbers have to be right to the cent, and the AI-agent infrastructure that lets a small team run them safely. Tech lead for the billing data of millions of sellers at one of the largest marketplaces in Eurasia (100+ TB); co-founder and CTO of a health-tech startup in Brazil; earlier an engineering manager whose team grew from 6 to 20. I work with coding agents and verify everything they produce.", "location": { "region": "Americas" }, "profiles": [ { "network": "LinkedIn", "username": "ivanblinov", "url": "https://www.linkedin.com/in/ivanblinov" }, { "network": "GitHub", "username": "littleBro", "url": "https://github.com/littleBro" } ] }, "work": [ { "name": "Wildberries", "position": "Tech Lead, Data Engineering (Seller Balance)", "startDate": "2024-01", "summary": "Hands-on lead of a 12-engineer team that owns billing and settlements data for millions of sellers: tariffs, logistics and storage fees, acquiring, compensations and contract documents. Greenplum (~100 TB), ClickHouse, PostgreSQL, Kafka, Airflow; Russia and Georgia.", "highlights": [ "Built the team's AI-agent platform: an MCP server with 100+ tools, an autonomous on-call agent and an agentic merge-request reviewer (6 of 7 reference findings vs ~2.5 for diff-only LLM review; first production run: 15 findings, zero false positives), under a 21-ADR security architecture.", "Root-caused a global-lock bottleneck in ClickHouse 23.8 behind dashboard timeouts and redesigned the query path for ~5x throughput on the same version.", "Ran a fleet-wide int32-to-int64 key migration ahead of ID overflow across ClickHouse, Greenplum and PostgreSQL, including 4.7 TB of partitioned tables copied under a WAL budget.", "Led the Iceberg-on-S3 lakehouse pilot for the Seller Balance data organization: the data team's production Spark job ran unchanged on Iceberg; 11 ADRs.", "Ran a formal-methods pilot for billing (Dafny, TLA+, Z3, Lean): executable specifications linked to Go and SQL code; 42 findings.", "Led the six-month migration from Microsoft SQL Server to Greenplum and ClickHouse; moved a 12.7 TB ClickHouse cluster between datacenters.", "Built a Go service from scratch to production on three Kubernetes clusters; introduced mandatory merge-request approvals." ] }, { "name": "Wildberries", "position": "Senior Data Engineer", "startDate": "2023-07", "endDate": "2023-12", "summary": "Supplier-facing reporting APIs (Python, FastAPI, ClickHouse, Redis Sentinel) and DataOps pipelines on Airflow and Kafka." }, { "name": "Groupsi", "position": "Co-founder & CTO", "startDate": "2026-01", "summary": "Online group therapy for school and university students in Brazil, live with real users. Built the product end to end (React Native, React, Fastify, PostgreSQL, Redis, LiveKit; LGPD consent and audit logging) and an Azure production platform in Terraform; runs an AI-native engineering process with coding agents and multi-model review." }, { "name": "MDF AG", "position": "Engineering Manager", "startDate": "2021-07", "endDate": "2022-12", "summary": "Grew a cross-functional engineering team from 6 to 20; portfolio-monitoring systems combining blockchain and exchange data; redesigned a backtesting engine with NumPy and Numba for a 100x speedup." }, { "name": "Netfactory", "position": "Engineering Team Lead", "startDate": "2019-10", "endDate": "2021-06", "summary": "Led a 10-engineer team delivering a data-analysis platform for Russia's Federal State Statistics Service; took an API billing product from zero to delivery; hired 20 engineers." }, { "name": "Sketchfab", "position": "Back End Developer", "startDate": "2019-01", "endDate": "2019-09", "summary": "Python/Django backend for 4M active users: database tuning, caching, rate limiting, asynchronous processing." }, { "name": "Smartbank", "position": "Full Stack Developer", "startDate": "2017-03", "endDate": "2018-12", "summary": "Built a B2B SaaS from scratch for bank-business workflows: government registries, OCR, qualified electronic signatures." }, { "name": "Self-employed", "position": "Full Stack Developer", "startDate": "2014-01", "endDate": "2017-02", "summary": "Web products built from scratch: a marketplace, a news aggregator, data parsers, chatbots." } ], "education": [ { "institution": "42", "area": "Digital Technologies Architect", "startDate": "2017", "endDate": "2022" }, { "institution": "Moscow Open Institute", "studyType": "Bachelor's degree", "area": "Project Management", "startDate": "2017", "endDate": "2025" }, { "institution": "Sorbonne Université", "area": "Classics and Classical Languages", "startDate": "2015", "endDate": "2017" } ], "certificates": [ { "name": "Oracle Certified Associate, Java SE 8 Programmer", "issuer": "Oracle" } ], "skills": [ { "name": "Data platforms", "keywords": [ "Greenplum", "ClickHouse", "PostgreSQL", "Kafka", "Airflow", "Spark", "Trino", "Apache Iceberg", "Hive Metastore", "S3", "performance tuning", "migrations", "disaster recovery" ] }, { "name": "AI engineering", "keywords": [ "MCP servers", "coding agents", "agent evaluation", "agent security", "Claude Code", "Codex", "OpenCode", "LLM gateways" ] }, { "name": "Correctness", "keywords": [ "TLA+", "Dafny", "Z3", "Lean", "property-based testing", "differential testing", "mutation testing" ] }, { "name": "Programming languages", "keywords": [ "Python", "Go", "SQL", "TypeScript" ] }, { "name": "Infrastructure", "keywords": [ "Kubernetes", "Docker", "Terraform", "Azure", "GCP", "GitLab CI", "GitHub Actions", "Vault", "Grafana" ] }, { "name": "Leadership", "keywords": [ "architecture", "ADRs", "design and code review", "hiring", "team scaling", "incident analysis" ] } ], "languages": [ { "language": "Russian", "fluency": "Native" }, { "language": "English", "fluency": "Full professional proficiency" }, { "language": "French", "fluency": "Full professional proficiency" }, { "language": "Spanish", "fluency": "Full professional proficiency" }, { "language": "Portuguese", "fluency": "Professional working proficiency" } ], "projects": [ { "name": "BendKV", "url": "https://github.com/littleBro/BendKV", "description": "A Redis-compatible server in Bend2 with a formally verified core: 68 proven laws, 1,769 of Redis 7.2.16's 1,812 own tests passing. Built with a team of AI coding agents; differential testing independently found nine bugs in Redis and Valkey." }, { "name": "heilbronn-triangle-bounds", "url": "https://github.com/littleBro/heilbronn-triangle-bounds", "description": "Conditional Heilbronn triangle bounds with Lean proofs and exact certificates." }, { "name": "Open Kernel Challenge 2026", "description": "LLM-inference kernels on an NVIDIA H200 (FP4 mixture of experts, attention, the full decode layer), built with a fleet of agents." } ], "meta": { "canonical": "https://ivanblinov.com/resume.json", "workMode": "Remote", "timezone": "UTC-3 to UTC-6", "lastModified": "2026-10-31T23:57:10+00:00" } }