Bohdan

Tkachov An enthusiastic developer who combines an
engineering approach and love of pure code. I strive

Bohdan
to create not just working solutions, but thoughtful
and scalable systems. I can quickly adapt to new
tasks, deeply delve into business requirements and
actively participate in improving the processes of the
Fullstack team. I appreciate the quality,
openness and constant development in the

Developer profession. I am ready to work both on the front -end
and on the backing, I feel confident in modern
technological stacks.

EXPERIENCE
[open contact info](look above in the "contact info" section) Fullstack Developer
[open contact info](look above in the "contact info" section) Crystalcore : Travel & PropTech startup
February 2025 - Present
Dnipro, Ukraine Working in a product-focused startup developing two large-scale
services:
Flight booking platform : seat map, Amadeus API integration,
booking and payment flow;
Real estate marketplace : property catalog, smart filtering, Flitt
SKILLS payment integration, map-based search.
Key responsibilities:
Built frontend features with React + TypeScript, using custom
hooks, Tailwind CSS, Zustand;
Backend: Python (Fastapi,
Developed backend APIs with Python (FastAPI) and Node.js
Django), Node.js (Express, (NestJS) for booking, authentication, payments, and external
Nestjs) integrations;
Frontend: React, Next.js Worked with PostgreSQL and Redis for data modeling and
performance optimization;
Programming languages:
Deployed services via Docker, configured CI/CD (GitHub
Typescript, JavaScript, Actions), and hosted on AWS;
Python Created Telegram bots for client interaction and internal
Databases: PostgreSQL, automation;
Participated in system design, code reviews, and cross-team
Mongodb, MySQL collaboration.
Infrastructure: Docker, Achievements:
Github Actions, AWS, Nginx Increased API response speed by 40% through caching and
query optimization;
Working with data: REST
Delivered a full booking flow with secure payment logic;
API, WebSockets, Initiated microservices transition for improved modularity.
Integration of AI models Fullstack Developer
Other: performance Maverlyn : AI-driven business automation startup (maverlyn.com)
February 2024 - January 2025
optimization, CI/CD Developed a business process automation platform using Python
(FastAPI, Django), Node.js (Express), and React.
https://github.com/senseilllawa Responsibilities:
Integrated AI-based microservices through REST APIs;
LANGUAGES Built Telegram bots for notifications and internal workflows;
Designed responsive UIs with React + TypeScript;
Managed infrastructure with Docker, GitHub Actions, and AWS;
Ukrainian (native) Optimized backend and database performance (PostgreSQL,
English (average level) Redis);
Collaborated in a cross-functional team with backend, data, and
EDUCATION DevOps specialists.
Technologies:
National University "Odesa Law Academy" Python (FastAPI, Django, Aiogram), Node.js (Express), React,
TypeScript, PostgreSQL, MongoDB, Redis, Docker, AWS, REST API,
Specialty 121 "Engineering of Program" WebSockets, Telegram Bot API.
2022-2026