Aleksei Tcelishchev
Senior DevOps and Software Architect
Professional Summary
Results-driven Senior Engineer and Architect with over 20 years of experience designing and operating mission-critical cloud infrastructure. Expert in AWS, Kubernetes, and IaC (Terraform), with a proven track record of orchestrating zero-downtime migrations and reducing infrastructure costs by up to 40%. Deeply experienced in integrating advanced technologies including AI/LLM RAG pipelines, Blockchain (Ethereum/DeFi), and complex payment systems (Stripe Connect). Passionate about building secure, compliant, and highly scalable platforms for SaaS and FinTech leaders.
Core Competencies & Technical Stack
Cloud & Platform
- AWS (EKS, EC2, RDS, IAM, Lambda)
- Terraform Infrastructure as Code (IaC)
- Kubernetes (Cilium, Helm, GitOps)
- Multi-Region / Multi-Cloud Strategy
AI & Innovation
- RAG Architectures (LangChain, LangGraph)
- Vector DBs (Pinecone, Chroma)
- Multi-provider LLM Routing & Safety
- AI Agent Engineering (Crew.AI)
Engineering & Backend
- Python (FastAPI, Django, Flask)
- Node.js (Nest.js, Next.js)
- Golang (Systems Programming)
- Stripe Connect / Payment Orchestration
Observability & Security
- Prometheus / Grafana / ELK Stack
- SOC 2 & HIPAA Readiness
- Zero-Trust Networking
- Docker Security & Container Hardening
Professional Experience
Senior DevOps Engineer
BeeTechy LLC 2024 - 2025- Architected and migrated legacy AWS deployments to a unified, Terraform-managed Docker ecosystem.
- Optimized AWS infrastructure resulting in a 30% reduction in monthly cloud expenditure.
- Implemented robust CI/CD pipelines using GitHub Actions, streamlining deployment frequency and reliability.
- Provided expert consultation on AI infrastructure scaling for high-growth SaaS clients.
DevOps and Engineering Manager
EventCartel LLC 2018 - 2024- Led the transformation of infrastructure from monolithic Heroku deployments to fully managed AWS EKS clusters.
- Designed and implemented a complex 'Seatmap Constructor' with multi-zone support and real-time availability.
- Architected a multi-tenant payment platform using Stripe Connect, enabling seamless payout flows for thousands of promoters.
- Maintained 99.99% system uptime through pro-active monitoring (Prometheus/Grafana) and incident response management.
- Ensured compliance with security standards through WAF implementation and fine-grained IAM controls.
Lead Engineer & Founder
webomage.com 2006 - Present- Consulted for 70+ global clients on complex cloud migrations and system integrations.
- Developed and deployed institutional-grade blockchain infrastructures (Ripple, Stellar, Hyperledger).
- Built highly secure, multi-signature wallet systems for DeFi platforms using web3.py and smart contracts.
- Pioneered RAG-based AI support systems that reduced human ticket volume by over 60% for early-adopter clients.
- Integrated advanced financial modules supporting high-traffic transaction volumes through Authorize.net and custom gateways.
Senior Backend & DevOps Engineer
TokensFarm & DcentraLab 2021 - 2023- Managed DevOps operations for high-stakes DeFi staking and farming products.
- Implemented automated security compliance checks for DApp frontends and backends.
- Optimized smart contract interaction layers, reducing gas costs and improving transaction throughput.
Selected Technical Projects & Innovations
Enterprise-Scale Stripe Connect Integration
Architected a multi-tenant payment ecosystem for a major event ticketing platform, handling complex payout logic and marketplace fees.
- Enabled instant payouts for over 2,000 active promoters.
- Implemented secure OAuth onboarding flows for third-party merchant accounts.
- Automated platform fee collection and reconciliation across diverse currencies.
Zero-Downtime AWS to EKS Migration
Orchestrated the migration of a high-traffic monolithic application to a microservices architecture on Kubernetes with zero service interruption.
- Achieved 40% reduction in infrastructure costs via aggressive spot-instance utilization.
- Implemented advanced networking with Cilium CNI for enhanced security and observability.
- Reduced deployment lead time from hours to minutes using GitOps (ArgoCD).
Context-Aware AI Support Infrastructure
Designed and deployed a Retrieval-Augmented Generation (RAG) pipeline to automate customer support for a technical SaaS product.
- Reduced human intervention for Tier-1 support queries by 60%.
- Implemented real-time data ingestion from company documentation and Slack history.
- Integrated multi-agent orchestration for handling complex multi-step technical inquiries.