Aniello

Zero-Downtime Live Database & ETL Migration: Engineered a zero-downtime database refactoring from AWS DynamoDB to PostgreSQL under continuous production traffic. Established shadow-writing ETL pipelines, automated data reconciliation validators, and executed a seamless cutover with zero data loss or service interruption. AWS Cloud Infrastructure & Legacy Modernization: Architected the end-to-end cloud migration of legacy PHP/MySQL monolithic infrastructure onto AWS (EC2, ECS, RDS PostgreSQL, S3). Containerized core backend services into scalable, modular Node.js, TypeScript, and Python microservices. Data Workload Scaling & Algorithmic Engines: Optimized compute performance and memory footprint for data-intensive calculation and generation engines. Handled high-throughput real-time data inputs and batch processing workflows, significantly raising platform availability SLAs. CI/CD Automation & Paved Path Infrastructure: Implemented automated CI/CD deployment pipelines using GitHub Actions and Docker containerization. Standardized codebase modularization, system architecture documentation, and paved-path release workflows for autonomous engineering teams.

High-Throughput Data Ingestion & Financial Graph Engine: Built automated data extraction and parsing pipelines to process complex financial reports. Engineered algorithms to automatically reconstruct multi-jurisdictional corporate entity networks, Ultimate Beneficial Ownership (UBO) structures, and interactive financial graphs. Platform Architecture & Transactional Payment Infrastructure: Architected public customer portals and internal admin management tools. Integrated automated Stripe payment data infrastructures featuring idempotent webhook processing, transactional safety guarantees, subscription lifecycle management, and automated retries. Continuous Deployment & Infrastructure Automation: Implemented automated GitLab CI/CD pipelines and Docker containerization strategies to ensure zero-downtime deployment releases, automated testing, and environmental parity across staging and production. Full-Stack Architecture & Agile Delivery: Balanced rapid feature delivery cycles with long-term architectural stability, establishing clean API boundaries, modular full-stack codebases, and high system maintainability.

Real-Time Data Pipeline Incident Escalation: Acted as the primary technical escalation point for critical exchange infrastructure. Executed high-stakes, live troubleshooting and debugging on mission-critical AWS Lambda transaction and data ingestion pipelines handling high-concurrency digital asset trading operations. Open-Source Enterprise Framework Author (nestjs-yalc): Authored, published, and maintained nestjs-yalc (Yet Another Library Collection), an open-source enterprise NestJS framework driving code standardization, structured logging, RBAC security, transport strategies, and error handling across multiple autonomous R&D teams. High-Throughput Microservices & Stream Processing: Spearheaded the architectural design of distributed microservices utilizing AWS Lambda, SQS, SNS, DynamoDB, TypeScript, and Python, meeting sub-millisecond execution and real-time stream processing requirements under heavy trading volumes. Granular RBAC Security Platform & Admin Suite: Architected a multi-level RBAC authorization platform and internal support administration suite, safeguarding exchange operations, internal workflows, and strict data access permissions.

Real-Time Data Streaming & Cross-Platform Engines: Designed and built cross-platform desktop applications and platform launchers (e.g., Azeroth Shard Launcher) integrating Electron, C++, React, and automated background data updaters. Engineered high-frequency market data streaming engines utilizing MQL5, ZeroMQ, and Python. End-to-End Full-Stack Application Delivery: Architected and delivered custom full-stack solutions, e-commerce platforms, custom CMS modules, and interactive B2C web applications using React, Angular, Node.js, and PHP. Integrated complex third-party APIs (payment gateways, location services) ensuring high frontend responsiveness and transactional safety. Server Provisioning, DevOps & Database Infrastructure: Orchestrated cloud and bare-metal environments (Linux, NGINX, Docker, MySQL/PostgreSQL). Configured automated zero-downtime deployment pipelines, system security hardening, custom database backends, and performance tuning. Technical Consulting & Lifecycle Management: Managed end-to-end software development lifecycles for international clients—from initial requirements gathering and system architecture design to production deployment, bug resolution, and long-term platform maintenance.