Developer Profile

Full-stack developer experienced with React, Next.js, Node.js, NestJS, and .NET.

I build scalable web apps, backend systems, dashboards, and user-facing products. I'm based in Sofia, Bulgaria and open to suitable full-stack opportunities.

Quick Overview

NameKaloyan Chakarov
LocationSofia, Bulgaria
UniversityTechnical University of Sofia
High SchoolTUES / ELSYS, Sofia
Experience4+ years (professional)
AvailabilityOpen to opportunities
LanguagesBulgarian (native), English (fluent)
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About Me

I'm a full-stack developer based in Sofia, Bulgaria. I graduated from TUES (ELSYS) — one of Bulgaria's leading technical schools — and I'm currently studying Computer Systems and Technologies at the Technical University of Sofia.

I have 4+ years of professional experience building production systems across multiple companies and domains — including e-government infrastructure, fintech platforms, NGO survey tools, and consumer applications.

I'm comfortable working across the full stack: React and Next.js on the frontend, Node.js, NestJS, and .NET on the backend, with PostgreSQL and SQL Server for data. I care about code quality, system design, and shipping things that actually work in production.

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Tech Stack

Technologies I use across frontend, backend, and infrastructure.

Frontend

ReactNext.jsTypeScriptTailwind CSSHTML/CSSFramer Motion

Backend

Node.jsNestJS.NET (C#)ExpressREST APIsFastAPI

Databases

PostgreSQLSQL ServerMongoDBRedis

Tools & Infra

GitDockerLinuxFigmaAWS

Languages

TypeScriptJavaScriptPythonC#SQL
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Where I've Worked

Professional experience building real products for real users.

IO

Информационно Обслужване АД

Full-Stack Developer

2025 — PresentCurrently here

Working as a full-stack developer on e-government systems for the Bulgarian state administration. Building and maintaining modules for a civil registration platform used in administrative workflows across Bulgaria.

Projects
ЦАИСГР (ГРАО)Civil Registration System
Stack
ReactTypeScript.NETC#SQL ServerREST APIGit
AP

Appolica

Full-Stack Developer

2022 — 2025Completed

Worked as a full-stack developer across multiple live products spanning fintech, OCR automation, education, and consumer apps, using React, Node.js, NestJS, Express, PostgreSQL, and related tools.

Projects
DymeMyCFOЗаедно в ЧасLoveLanguage
Stack
ReactTypeScriptNode.jsNestJSExpressPostgreSQLREST APIGit
ALWAYS BUILDING
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Projects

Professional and personal work with technical context.

ЦАИСГР — Civil Registration System

Информационно Обслужване АД

Built and maintained modules for a national e-government civil registration platform using React, TypeScript, .NET, C#, SQL Server, and REST APIs. Worked on frontend architecture, API integration, complex forms, and performance improvements across administrative workflows.

ReactTypeScript.NETC#SQL ServerREST API

Dyme — Subscription Manager

Appolica

Contributed to a live fintech product with a significant user base. Built frontend features with React/TypeScript, integrated with a NestJS/PostgreSQL backend, and worked with ML-based subscription detection pipelines. Focused on real-time data rendering and a high-quality mobile-first UI.

ReactNode.jsNestJSPostgreSQLMachine LearningREST API

MyCFO — OCR Invoice System

Appolica

Built a B2B financial platform using React, NestJS, Node.js, and PostgreSQL. Integrated an OCR processing pipeline for structured data extraction from invoices and receipts. Worked across frontend, backend, and mobile-responsive layouts.

ReactNestJSNode.jsOCRPostgreSQLMobile

Заедно в Час — School Surveys

Appolica

Built a full-stack survey and analytics platform for an NGO client using React, Node.js, Express, and PostgreSQL. Designed the data collection flow, aggregation logic, and admin dashboard for managing multi-group survey results.

ReactNode.jsExpressPostgreSQLREST API

LoveLanguage

Appolica

Developed a cross-platform consumer app using React and Node.js/Express. Implemented the assessment engine, results calculation logic, and personalised recommendation flow, with a fully responsive frontend.

ReactNode.jsExpressMobileREST API

BetterSociety

Diploma project at ELSYS. Built a cross-platform mobile app in Flutter/Dart with Firebase backend, implementing real-time NGO–volunteer matching and community event management.

FlutterDartFirebaseMobile
View Source

Legal Assistant

Built the frontend for an AI legal assistant using React/TypeScript. Integrated with a language model API to deliver conversational document analysis, with a clean chat UI and document parsing flow.

TypeScriptReactAI IntegrationREST API
View Source
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My Journey

The academic path that shaped my technical foundation.

2023 — PresentCurrently Enrolled

Technical University of Sofia

Bachelor's DegreeComputer Systems and Technologies

Currently pursuing my undergraduate degree in Computer Systems and Technologies. Studying algorithms, data structures, computer architecture, networking, software engineering, and modern development methodologies.

Computer Systems & TechnologiesSoftware EngineeringData Structures & AlgorithmsComputer NetworksDatabases
2019 — 2023
Graduated

TUES — Technical School for Electronics and Software Systems (ELSYS)

High School DiplomaSoftware Engineering

Graduated from one of Bulgaria's most prestigious technical high schools, focused on software and electronics. Gained strong foundations in programming, mathematics, electronics, and team project development.

Programming fundamentals (C/C++, Python)Web DevelopmentElectronics & Embedded SystemsMathematics & PhysicsTeam Projects
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Get in Touch

Open to full-stack developer roles. Feel free to reach out via email or LinkedIn.

Sofia, Bulgaria·kaloyanchkrv11@gmail.com