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Senior
Registration: 19.08.2026

Aleksander Krakhmalets

Specialization: Backend Engineer
— Senior Backend Engineer with 5+ years of commercial experience in Node.js and TypeScript. — Designs and builds backend architectures from scratch; takes ownership of complex business logic. — Experience with high-load systems (up to 2,000 RPS), microservices, Web3, and ML/NLP model integration. — Worked on e-commerce ERP platforms, Telegram Web Apps with 500K+ DAU, and crypto ecosystems. — Proficient in Clean Architecture, Hexagonal Architecture, fault tolerance, and horizontal scaling.
Python SQL JavaScript Git PostgreSQL Docker Linux MySQL TypeScript Node.js MongoDB REST Redis CI/CD methodologies Kafka RabbitMQ OOP FastAPI Express.js Jest NestJS ClickHouse Microservices PyTorch
— Senior Backend Engineer with 5+ years of commercial experience in Node.js and TypeScript. — Designs and builds backend architectures from scratch; takes ownership of complex business logic. — Experience with high-load systems (up to 2,000 RPS), microservices, Web3, and ML/NLP model integration. — Worked on e-commerce ERP platforms, Telegram Web Apps with 500K+ DAU, and crypto ecosystems. — Proficient in Clean Architecture, Hexagonal Architecture, fault tolerance, and horizontal scaling.
Python SQL JavaScript Git PostgreSQL Docker Linux MySQL TypeScript Node.js MongoDB REST Redis CI/CD methodologies Kafka RabbitMQ OOP FastAPI Express.js Jest NestJS ClickHouse Microservices PyTorch

Skills

Node.js
TypeScript
NestJS
JavaScript
PostgreSQL
Redis
Docker
Kafka
RabbitMQ
Python
FastAPI
PyTorch
MongoDB
MySQL
ClickHouse
REST API
Microservices
Clean Architecture
Hexagonal Architecture
Ethers.js
Solidity
Web3
Jest
Sequelize
CI/CD
Linux
Git
OOP
Bull

Work experience

senior engineer
since 01.2025 - Till the present day |nda
nest.js
Backend Developer
08.2023 - 01.2025 |BodyProduction
Node.js, TypeScript, PostgreSQL, Redis, RabbitMQ, Sequelize, Docker, Jest, Python, FastAPI, PyTorch
● Designed and built the backend architecture from scratch using Clean Architecture and Hexagonal Architecture principles. ● Developed server-side business logic and APIs supporting loads of up to 2,000 RPS. ● Implemented asynchronous service communication through RabbitMQ, eliminating blocking issues during peak loads. ● Covered critical business logic with unit and integration tests using Jest; achieved 90%+ test coverage. ● Set up Docker, CI/CD pipelines, and monitoring in collaboration with DevOps. ● Integrated ML/NLP components through FastAPI for processing and classification of user-generated text data.
Backend Developer / Web3
01.2021 - 07.2023 |Evo.mg
Node.js, TypeScript, Ethers.js, Solidity, Web3, PostgreSQL, Redis, Docker
● Designed and built a microservice-based backend architecture from scratch for a crypto ecosystem and integration of new gaming projects. ● Developed authentication and account linking through crypto wallets using Ethers.js. ● Developed and tested Solidity smart contracts for Web3 product features. ● Implemented token donation processing using on-chain events and automatic crediting of funds to users' in-game balances. ● Built a P2P exchange inside a Telegram bot with atomic processing and transaction safety.

Educational background

Information Technologies
Till 2009
College of Business and Information Technologies

Languages

EnglishIntermediateRussianNative