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Tsvetoslav KonishevTK

Tsvetoslav Konishev

Full Stack Engineer (TypeScript/Node.js/React)

€300/day
Veliko Tarnovo, BG
8-15 years

Average response time: 1 hour

About Tsvetoslav

Full Stack Engineer specializing in TypeScript, React, Node.js, and PostgreSQL. I build production-ready web applications from the ground up — from database design and REST
APIs to responsive frontends and deployment.

What I bring to the table:
- End-to-end development of complex SaaS platforms (authentication, Stripe billing, role-based access, multi-tenancy)
- Financial/accounting domain expertise — VAT compliance, double-entry bookkeeping, multi-currency, EU regulations
- Strong focus on code quality: comprehensive test suites (5000+ tests), security best practices (OWASP, GDPR), and clean architecture
- Experience with Prisma ORM, Docker, Cloudflare Workers, CI/CD pipelines, and PDF/Excel report generation

I recently built and deployed a full accounting SaaS platform solo — covering invoicing, payments, expenses, fixed assets, VAT declarations, and financial reporting, all
compliant with EU and Bulgarian tax law.

I work well independently and communicate clearly. Available for both short-term projects and long-term collaborations.
  • Bulgarian

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • NMV Innovation Services
    Full Stack Engineer
    October 2025 - Today (8 months)
    Full Stack Engineer specializing in React, TypeScript, Node.js, and PostgreSQL, working on a scalable marketing platform where I design and deliver end-to-end features across the frontend and backend, including complex dashboards, secure authentication, high-performance APIs, and optimized data workflows.

    In parallel, I am the creator of a full-featured accounting platform, where I own the entire architecture — from database schema and business logic to invoicing, financial reporting, and a production-ready, type-safe React application — with strong focus on scalability, security, and clean, maintainable code.
    Typescript Node.js React.js PostgreSQL Docker
  • NMV Innovation Services
    Frontend Developer
    June 2025 - October 2025 (4 months)
    Veliko Turnovo, Bulgaria
    Frontend Developer with experience building a modern marketing platform focused on high-performance, responsive, and conversion-oriented user interfaces. Implemented reusable component architecture with React, integrated REST APIs, optimized SEO and page speed, and developed dynamic dashboards, campaign management views, and analytics visualizations to improve user engagement and business growth.
  • Reflection Infosys
    React Developer
    DIGITAL AND IT
    September 2024 - June 2025 (9 months)
    Bulgaria
    React Developer with hands-on experience building a full-stack crypto streaming platform. Developed scalable and responsive user interfaces with React, implemented real-time audio recording and playback, wallet integration, and tokenization features for both fungible and non-fungible assets. Focused on performance optimization, modular architecture, and seamless Web3 interaction.

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Education

  • Master's degree
    St. Cyril and St. Methodius University of Veliko Tarnovo
    2024
    Master's degree
  • St. Methodius University of Veliko Tarnovo

Skill set

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