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Tatsiana L.TL

Tatsiana L.

Senior Backend Architect & API Systems Engineer

360 €/día
Madrid, ES
>15 años

Tiempo medio de respuesta: 1h

Acerca de Tatsiana

I design backend systems that remain secure, stable, scalable, and maintainable as products grow.

With a Master’s degree in Computer Science and 15+ years of engineering experience, I specialize in architecture and implementation of high-performance backend platforms serving real production workloads.

Companies typically involve me when:

✅ a product backend must be designed correctly from day one
✅ multiple clients rely on one API (web, mobile, integrations)
✅ performance or scalability becomes a business risk
✅ systems grow complex and development slows down
✅ legacy backend requires careful refactoring without downtime

I combine architectural thinking with hands-on development, taking systems from early design through production deployment.

📍Core Backend & Architecture Expertise:
• Backend architecture & service design
• High-performance systems (Rust, Node.js)
• GraphQL & REST API architecture
• PostgreSQL data modeling & optimization
• Distributed & real-time systems
• Microservices & integrations
• Cloud infrastructure & DevOps workflows

Experience also includes distributed systems, blockchain infrastructure, and latency-sensitive platforms, including algorithmic trading bots & high-frequency trading systems.

📍Technologies:
• Languages: JavaScript, TypeScript, Rust, PHP, Solidity
• Backend: Node.js, Express.js, GraphQL, MERN, PERN, LAMP
• Databases: PostgreSQL, MySQL, MongoDB
• Cloud: AWS, DigitalOcean, Apache, Nginx, Render, Vercel, Cloudflare
• DevOps: Docker, CI/CD, Git workflows
• Integrations: Stripe, PayPal, OAuth, WebRTC, WebSockets, Custom APIs, Redis
• Blockchain: Web3, Smart Contracts, EVM ecosystems
• ML/AI: OpenAI, Lyzr, Base44

I work best with clients, startups and teams who value engineering quality, clean architecture, strong ownership, long-term maintainability, and clear communication.
  • Inglés

    Bilingüe o nativo

  • Español

    Competencia profesional completa

  • Francés

    Nociones

  • Alemán

    Nociones

Solo teletrabajo
Lleva a cabo sus proyectos principalmente en remoto

Experiencia

  • Cenebro
    Principal Engineer
    BANCA & SEGUROS
    noviembre de 2025 - Hoy (7 meses)
    Zürich, Switzerland
    Owned architecture and technical direction for distributed financial systems and high-load backend platforms. Designed scalable Rust and Node.js services, APIs, and microservices handling real production traffic. Improved system performance, reliability, and security, introduced clean architecture standards, optimized databases, implemented cloud deployments, and mentored engineering teams while delivering business-critical software solutions end-to-end.
    Rust Arquitectura de TI Arquitectura de software Node.js GraphQL
  • CryptoMoto Ltd
    Chief Technology Officer
    AUTOMÓVIL
    septiembre de 2022 - Hoy (3 años y 9 meses)
    England, United Kingdom
    Defined company technical vision and architecture strategy. Designed and implemented backend infrastructure for a decentralized social platform serving multiple production clients. Built scalable APIs, integrated Web3 infrastructure, established engineering processes, ensured system reliability and security, and led development from early concept through full production deployment and platform scaling.
    Node.js IT Architecture GraphQL PostgreSQL Integración API externa
  • Fluid Finance SA
    Head of Web Development
    BANCA & SEGUROS
    septiembre de 2021 - agosto de 2022 (11 meses)
    Geneva, Switzerland
    Led fintech engineering organization responsible for secure financial platforms and high-availability backend services. Architected scalable financial APIs and cloud infrastructure, introduced engineering standards and DevOps practices, improved delivery velocity, and increased platform reliability. Successfully scaled systems to handle high transaction volumes while maintaining low latency, security compliance, and fault-tolerant operations.
    Integración API externa API REST Gestión de bases de datos (por ejemplo, SQL, NoSQL) Plataformas e infraestructuras en la nube Arquitectura de TI

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Formación

  • Master's degree
    Belarusian State University of Informatics and Radioelectronics
    2011
    Computer Science & Software Technology
  • Master's degree
    Belarusian State University
    2007
    International Relations and Affairs

Conjunto de habilidades profesionales

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