Andriy

Andriy Yevtushyn
Software Engineer

📍 Location: Ukraine / Remote

📧 [open contact info](look above in the "contact info" section) | 🌐 [open contact info](look above in the "contact info" section)
yevtushyn-448a82172/ | 🧑 💻 https://github.com/Avionic23

Summary
Mid-level software engineer with 3+ years of experience in backend development,
blockchain infrastructure, and scalable system design. Strong ownership in building
authentication systems, event- driven pipelines, and fault-tolerant services.

Core Skills
• Languages: Go, Python, JavaScript, SQL
• Backend: REST APIs, gRPC, FastAPI, Gin
• Databases: PostgreSQL, MySQL, Redis
• Blockchain: Ethereum, Bitcoin, Aleo
• Infrastructure: Docker, Docker Compose, Linux, NGINX
• Tools: Git, Supervisor, Cron

Professional Experience
Software Engineer — Aiden
Full-time · Remote (Singapore) | Apr 2025 – Present - Built a full authentication system:
user registration, login, password reset, and email veri cation - Designed database
schemas for user management and agent con guration - Implemented secure auth
work ows (password hashing, token-based sessions, email validation) - Integrated a
centralized backend enabling multi-user access and data synchronization
MCP System Design - Designed and developed multiple Model Context Providers
(MCPs) for a desktop application - Built an authentication gateway as the rst layer of
request validation - Implemented an aggregation and routing service to forward
authenticated requests to appropriate MCPs - Added failover mechanisms and secure
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 routing to improve reliability - Improved maintainability by centralizing authentication and
routing logic

Software Engineer — FoxWallet
Full-time · Remote (Singapore) | Apr 2024 – Nov 2025 - Built a scalable blockchain
noti cation service using an event-driven pipeline to process on-chain data - Detected
and delivered real-time user-relevant events (transactions, con rmations, contract
activity) - Delivered low-latency push noti cations to mobile clients - Supported multiple
blockchains with an extensible architecture (Bitcoin, EVM-compatible chains) -
Optimized ltering and processing to handle high transaction throughput
Blockchain Node Access & Reliability - Designed a fault-tolerant load balancing
system for blockchain node access - Built a dynamic node pool aggregating multiple
public nodes - Implemented continuous health checks and automatic failover - Designed
weighted request routing to control traf c distribution and prevent overload -
Signi cantly improved reliability and uptime of blockchain interactions
Indexing & Data Infrastructure - Contributed to a blockchain indexing system,
focusing on database schema design - Optimized ingestion pipelines to reduce latency
and improve throughput - Improved performance and reliability of downstream data
consumers

Software Engineer Intern — FoxWallet
Full-time · Remote | Apr 2023 – Mar 2024 - Developed and maintained at on-ramp and
off-ramp integrations - Integrated third-party payment and exchange providers for
crypto– at ows - Built data ingestion pipelines to fetch and monitor crypto and at
asset data - Delivered real-time price updates for accurate quoting and execution -
Ensured data consistency under rapidly changing market conditions

Python Engineer — Data Glacier
Internship · Remote (India) | Feb 2023 – May 2023 - Worked on backend API
development using Python - Contributed to data processing and service integration
tasks

Education
National University «Kyiv Aviation Institute»
Master’s Degree — Avionics Maintenance Technology / Technician
Sep 2021 – Dec 2022
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National University «Kyiv Aviation Institute»
Bachelor’s Degree — Avionics Maintenance Technology / Technician
Sep 2017 – Jun 2021

Additional
• Strong debugging and incident-response skills
• Comfortable reading protocol specs and source code
• Experience working with distributed systems and unreliable data sources
• Fluent in English