Alexey Chentsov

• Developed microservices (Java 21, Spring Boot) and event-driven architecture with Kafka • Delivered features end-to-end: design, implementation, testing, release, and production support • Improved platform stability (~25% fewer incidents) by enhancing monitoring and performing root-cause analysis • Collaborated closely with architects to refine system design and ensure compliance with enterprise standards Tech stack: Java, Spring Boot, Kafka, OpenShift, Azure DevOps, Postgres

• Architected a full-stack Voice AI platform (NestJS backend + Vue.js frontend, VoIP/WebRTC, STT→LLM→TTS) with <1s latency and 1000+ concurrent sessions • Designed multilingual RAG knowledge system with pgvector • Delivered CI/CD pipelines and FinOps cost optimization on Fly.io • Introduced GitHub Copilot to accelerate productivity Tech stack: NestJS, Vue.js, OpenAI/Anthropic, Postgres, VectorDB, Twilio, Docker, Fly.io, Python (FastAPI)

• Led frontend development for a US investment platform (web + mobile) using React and React Native • Defined architecture and introduced a micro-frontend component model to support scalability and modularity • Implemented GraphQL integrations and contributed to core feature development • Supported DevOps workflows with Azure DevOps, ensuring on-time and reliable delivery through CI/CD and review practices Tech stack: React, React Native, GraphQL, TypeScript, Azure, Postgres, Azure DevOps

Tech Lead for IoT & Energy networks platform with 3+ years of experience in this domain. Led a team of senior engineers,designed and implemented a scalable analytics system for the German and international energy market. Delivered full-stack solutions: Spring Boot backend, Angular frontend, Azure Functions (Node.js, serverless) Introduced Kafka-based data streaming and advanced Postgres extensions (PostGIS, Citus) for real-time analytics. Optimized CI/CD pipelines with Azure DevOps, Terraform,and Kubernetes

Being part of the IoT project for the market of security systems. Participating as a Full-Stack developer. The Project is based on Vue.js, Spring Framework, and SAP technologies. The project is considered as a start-up and has a very high pace in terms of time frames and requirements. The technology stack is quite diversified: * Vue.js, React.js * Java, Scala, Groovy * Keycloak * Terraform, Ansible for DevOps duties * High involvement of AWS services in the design of the application.

Participating in the development of the web platform for the temporary workforce in Germany, well-known international companies are among our clients in automation, out-staffing, and logistics areas. The main duty is to develop in Java and Groovy, the project is based on the Spring framework and Grails web framework. UI implementation is also a part of my responsibility; Another tech stack was: Vue.js, GitLab, and AWS (S3, Elastic Beans, EC2, Lambda, etc..)

Design and develop a Finance Risk Reporting System parts: ETL and Business processes implementation. Huge amounts of data force us to use cutting-edge Oracle technologies to manage this data: Partitioning, PDMLs and etc. The system is based on Oracle Exadata. Skills and technologies: Java, Spring Framework, Oracle, SQL, PL/SQL, MyBatis, Maven.

Have worked on dozens of projects for international trade net - firstly as a developer, later as a Team Leader (10 people underfoot). Implemented parts of warehouse operation control system. I know what 24/7 system is from personal experience on this project. That was an OLTP system, It gave me a good experience of concurrent systems development in Oracle.

Theoretical physics, Plasma physics