Summary
Overview
Work History
Education
Skills
Valuable Experience
Work Availability
Timeline
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KALOYAN MITEV

KALOYAN MITEV

Backend Developer

Summary

Experienced backend developer with 5 years of expertise in creating and optimizing scalable backend systems, specializing in fintech and blockchain industries. Proficient in designing resilient architectures, improving system performance, and completing high-impact projects successfully. Recognized for analytical skills, innovative problem-solving abilities, and dedication to excellence. Collaborative and quick learner who adds value to dynamic team settings. Passionate about utilizing cutting-edge technologies to deliver robust, user-centric solutions that drive business growth. Seeking to apply skills to innovative projects in a remote role at a forward-thinking company.

Overview

5
5
years of professional experience

Work History

Backend Developer

Stealth Startup
11.2024 - 05.2025
  • Led end-to-end development of a crypto on-ramp service enabling users to exchange fiat for crypto.
  • Designed and implemented scalable backend architecture using NestJS, with integrations for blockchain transactions, KYC verification, and payment processing.
  • Built dynamic fee prediction logic and handled all smart contract interactions and fraud prevention mechanisms.
  • Discontinued after initial funding round was unsuccessful, despite a completed MVP and positive early feedback.

Backend Developer

Astaria
10.2023 - 07.2024
  • Company Overview: Web3 Oracleless ERC-20 & ERC-721 intent based lending protocol
  • Developed a substantial portion of the backend API in TypeScript.
  • Implemented a real-time user rewards tracking system.
  • Designed and structured significant portions of the database schemas.
  • Conducted root cause analysis and resolved production issues.
  • Integrated external user analysis tools to gain better insights into customer behavior and needs.
  • Assisted with the onboarding and training of new team members.

Java Developer

QaiWare
01.2022 - 10.2023
  • Company Overview: Fintech company
  • Worked primarily on a web banking portal project for Aryza (formerly Collenda GmbH).
  • Played a key role in onboarding and mentoring of 2 new team members, accelerating their ramp-up time and improving overall team productivity.
  • Consistently enhanced customer satisfaction, earning positive feedback throughout my tenure.

Java Developer

Comsoft
12.2019 - 01.2022
  • Company Overview: Fintech company
  • Worked on a banking portal project, gaining valuable experience in the financial technology sector and even familiarizing myself with some COBOL code.
  • Maintained and optimized various existing systems to enhance performance and reliability.
  • Benefited from the company's horizontal hierarchy, which accelerated my learning across various aspects of the field.

Education

High School Diploma -

First English Language School
Sofia
05-2019

Skills

Java

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Valuable Experience

  • Participated as a Core Developer in a startup that was later acquired by Astaria.
  • Contributed to the backend and cloud development for MetaQuants, an AI company specializing in NFT price prediction.
  • Gained hands-on experience with Solidity by indexing various blockchain protocols and completing specialized courses, including the Smart Contract Hacking Course.

Work Availability

monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline

Backend Developer

Stealth Startup
11.2024 - 05.2025

Backend Developer

Astaria
10.2023 - 07.2024

Java Developer

QaiWare
01.2022 - 10.2023

Java Developer

Comsoft
12.2019 - 01.2022

High School Diploma -

First English Language School

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KALOYAN MITEVBackend Developer