// senior full-stack developer

Anastasiia
Buzeniuk

I build scalable web applications and AI-powered products — from front-end interfaces to backend architecture and LLM integrations.

Get in touch View experience
6+
years of experience
4
companies & freelance
MSc
applied mathematics
Anastasiia Buzeniuk
ReactNext.jsTypeScript Node.jsPythonPostgreSQL MongoDBLangChainOpenAI API Anthropic APIAWSDockerKubernetes
01

About

Full-stack developer with 6+ years of experience building scalable web applications and AI-powered solutions — from front-end interfaces to backend architecture and machine learning integrations.

A background in Applied Mathematics provides a strong foundation in algorithmic thinking, data modeling, and system design.

Experienced across the full product lifecycle — from MVP development to enterprise-grade solutions for international clients.

role
Senior Full-Stack Developer
focus
Web apps & AI integrations
experience
6+ years
education
MSc, Applied Mathematics
status
Open to projects
02

What I do

/01

Front-End Development

Complex, responsive interfaces with React, Next.js, and TypeScript — from pixel-perfect UI to state-heavy single-page applications.

/02

Back-End Architecture

Scalable backend systems with Node.js, Express, and Python — REST APIs, GraphQL, and data layers on PostgreSQL, MongoDB, and Redis.

/03

AI & LLM Integration

LLM-powered features in production: OpenAI and Anthropic APIs, LangChain, prompt engineering, and ML model deployment basics.

/04

Cloud & DevOps

Deployment and operations on AWS with Docker, Kubernetes, and CI/CD pipelines — infrastructure that scales with the product.

03

Experience

2025 — now

Full-Stack & AI Developer

Freelance

End-to-end web development and AI integration services for international clients — architecture design, front-end and back-end implementation, LLM-powered features, deployment, and ongoing maintenance.

ReactNext.jsTypeScript Node.jsPythonPostgreSQL MongoDBOpenAI/Anthropic APIsLangChain AWSDocker
2023 — 2025

Senior Full-Stack Developer

Eleks

Developed enterprise web applications, designed scalable backend architecture, integrated AI/ML features into production systems, mentored junior developers, and collaborated directly with clients on technical requirements and solution design.

ReactNext.jsTypeScript Node.jsExpressPython PostgreSQLGraphQLDocker KubernetesAWSCI/CDLLM integrations
2021 — 2023

Middle Full-Stack Developer

GlobalLogic

Developed and maintained full-stack features for enterprise clients, built REST APIs, integrated third-party services and early ML-based functionality, and improved application performance.

ReactNode.jsExpress PythonMongoDBPostgreSQL RedisDockerREST APIs
2020 — 2021

Junior Front-End Developer

SoftServe

Built responsive UI components and single-page applications, worked closely with designers and back-end teams to implement pixel-perfect interfaces.

ReactNext.jsJavaScript/TypeScript Node.jsHTML5CSS3/SASS
04

Skills

front-end/

ReactNext.jsTypeScript JavaScript (ES6+)HTML5CSS3/SASS

back-end/

Node.jsExpressPython REST APIsGraphQL

ai-ml/

OpenAI APIAnthropic APILangChain Prompt EngineeringLLM IntegrationML deployment basics

databases--devops/

PostgreSQLMongoDBRedis DockerKubernetesAWS GitCI/CD
05

Education

Master's Degree in Applied Mathematics

2017 — 2022

Ivan Franko National University of Lviv

06

Contact

Let's build something together

Open to freelance projects and long-term collaboration — web applications, AI integrations, and everything in between.

your.email@example.com