Senior Backend Software Engineer and product-minded systems builder with 6+ years of experience delivering reliable, high-load platforms in FinTech, Web3, AI, real-time streaming, and IoT SaaS.

I take products from a fuzzy requirement to a production system: clarify the problem, design the architecture, build the critical paths, launch, and own reliability after release. I care about systems that keep working under load, partial failure, and changing business conditions.

• High-throughput backend platforms, APIs, and event-driven services
• Payment, custody, and multi-chain blockchain infrastructure
• Low-latency real-time systems using WebSocket, TCP, and streaming pipelines
• Production AI features with measurable quality, observability, and cost controls
• Architecture improvements for systems that have outgrown their original design

• Designed a payment core handling 3,000+ RPS and 100M+ requests per day at 99.99% availability.
• Cut on-chain transaction costs by 90% through automated TRON energy rental and EVM gas management.
• Built a real-time transaction pipeline monitoring 3M+ multi-chain wallets with 2–3 second settlement latency.
• Reduced public RPC load by 70% and kept blockchain market-data latency below 200 ms across 15+ networks.
• Delivered multi-tenant real-time media infrastructure supporting 10,000+ concurrent WebSocket connections.
• Reduced AI-provider latency to under 250 ms and API spend by 40% with event-driven fan-out, caching, and deduplication.
• Built an AI-assisted market-analysis platform that reduced reporting time from 30–60 minutes to 10–15 seconds.

Backend & architecture
Node.js · TypeScript · Bun · NestJS · Encore.ts · Fastify · Express · REST · OpenAPI · WebSocket · TCP · Event-Driven Architecture · Microservices · DDD · Clean Architecture

Data & messaging
PostgreSQL · TimescaleDB · MySQL · Redis · MongoDB · ClickHouse · Kafka · RabbitMQ · NATS · Redis Streams

Web3 & FinTech
Ethereum · EVM · TRON · Bitcoin · Web3.js · CCXT · Uniswap V3 · KYC/AML · Web3 signatures · Transaction monitoring · Gas optimization

AI & real-time
OpenAI API · OpenRouter · n8n · Multi-agent systems · TimeGPT · Low-latency streaming · Observability

Infrastructure & quality
Docker · Linux · Nginx · OpenResty · Grafana · Loki · ELK · GitLab CI · Jenkins · Unit / Integration / E2E testing

• Design for failure. Critical workflows need idempotency, clear state transitions, observability, and safe recovery paths.
• Keep money and permissions deterministic. AI can support analysis and workflows; critical decisions remain protected by explicit, testable code.
• Measure outcomes. Latency, throughput, reliability, and cost are part of the feature—not an afterthought.
• Build for the next stage. Prefer understandable architectures that a team can operate and evolve.

Backend architecture, real-time platforms, fintech and blockchain infrastructure, dependable AI systems, and applied quantitative tooling.

• Telegram: @EldiyarDev
• LinkedIn: linkedin.com/in/eldiyar-dev
• Email: eldiyar.dev@gmail.com

Based in Antalya, Turkey · Open to remote roles and contract work across Europe, CIS, and the Middle East.