Andrei Zolin
Senior backend engineer with 8+ years in software development, including 6+ years building distributed backend systems for blockchain platforms. Expert in designing scalable, high-performance services in Go and Python, with deep experience in microservices, containerised deployments (Docker/Kubernetes), and cloud infrastructure. Secured $50 M+ in on-chain value with zero incidents. Strong background in databases (PostgreSQL, MongoDB, Redis), monitoring (Prometheus, Grafana), and CI/CD pipelines. Thoughtful use of AI as a productivity multiplier, while maintaining a deep understanding of underlying systems and trade-offs. Strong ownership mindset — takes responsibility for outcomes, not just tasks.
Experience
Senior Backend Engineer / Solidity Developer
HAQQ Network
Dubai
Architected and maintained Go-based backend services powering an EVM-compatible L1 blockchain (Cosmos SDK) Built high-throughput token distribution and vesting services handling > $50 M in assets Developed Python 3 tooling for automated testing, data pipelines, and deployment scripts Designed and deployed containerised microservices with Docker & Kubernetes on cloud infrastructure Led end-to-end delivery of MPC-based wallet backend including API design, key management, and security audits Stack: Go, Python 3, Solidity, Docker, Kubernetes, PostgreSQL, Terraform, Hardhat, Foundry https://haqq.network
Backend Engineer / Blockchain Architect
Open Money (Stablecoin Startup)
Dubai
Designed backend integration layer between on-chain stablecoin contracts and off-chain RWA services (Ondo Finance) Built minting/redemption API and transaction processing pipeline; processed $1 M+ in mints Stack: TypeScript, Solidity, Hardhat, Ethers.js, PostgreSQL https://www.openmoneydao.xyz/
Senior Software Engineer
Insolar
Russia
Developed blockchain Explorer backend and Web Wallet services with Go & Java Integrated cryptographic primitives (Secp256k1) into the platform core Built monitoring & observability stack: Prometheus, Grafana dashboards, structured logging Stack: Go, Java, Web3.js, PostgreSQL, Redis, Docker https://github.com/insolar
Backend / Blockchain R&D; Engineer
Soramitsu
Russia
Designed and implemented distributed notary service for atomic cross-chain swaps Built reliable backend components handling inter-chain communication Stack: Kotlin, Solidity, PostgreSQL, Docker https://soramitsu.co.jp
Education
University of Telecommunications and Information Science
Engineering Diploma
Innopolis University
Pre-Master's Program
Skills
Key Projects
HAQQ Network — Backend & Blockchain Platform
Senior Backend Engineer — 2022 - 2026
- Architected and maintained Go-based backend services powering an EVM-compatible L1 blockchain (Cosmos SDK)
- Built high-throughput token distribution and vesting services handling > $50 M in assets
- Developed Python 3 tooling for automated testing, data pipelines, and deployment scripts
- Designed and deployed containerised microservices with Docker & Kubernetes on cloud infrastructure
- Led end-to-end delivery of MPC-based wallet backend including API design, key management, and security audits
- Stack: Go, Python 3, Solidity, Docker, Kubernetes, PostgreSQL, Terraform, Hardhat, Foundry
Open Money — Stablecoin Backend Services
Backend Engineer / Blockchain Architect — 2021 - 2026
- Designed backend integration layer between on-chain stablecoin contracts and off-chain RWA services (Ondo Finance)
- Built minting/redemption API and transaction processing pipeline; processed $1 M+ in mints
- Stack: TypeScript, Solidity, Hardhat, Ethers.js, PostgreSQL
Insolar — Enterprise Blockchain Platform
Senior Software Engineer — 2018 - 2021
- Developed blockchain Explorer backend and Web Wallet services with Go & Java
- Integrated cryptographic primitives (Secp256k1) into the platform core
- Built monitoring & observability stack: Prometheus, Grafana dashboards, structured logging
- Stack: Go, Java, Web3.js, PostgreSQL, Redis, Docker
Soramitsu — Distributed Cross-Chain Notary
Backend / Blockchain R&D; Engineer — 2018 - 2020
- Designed and implemented distributed notary service for atomic cross-chain swaps
- Built reliable backend components handling inter-chain communication
- Stack: Kotlin, Solidity, PostgreSQL, Docker
Education & Certifications
Engineering Diploma - Secure Communication Systems & Distributed Networks
University of Telecommunications and Information Science
Pre-Master's Program - Software Engineering
Innopolis University
Certified Java Developer
Personal Interests
Padel, cycling, and running
These activities help me maintain the focus and endurance needed for complex technical challenges.
Languages
English
C1
Russian
C2