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Daniil SeredaDS

Daniil Sereda

Frontend Developer | React | Next.js | UX/UI

€160/day
Granada, ES
3-7 years

Average response time: 1 hour

About Daniil

Hi👋 My name is Daniil, and I’m a Frontend Developer and Software Engineer.

Looking for a modern website that looks professional, performs fast, and helps attract customers? I can help you build your project from start to finish — from design and development to SEO optimization and deployment.

What I can help you with:
• Landing pages, business websites, and corporate websites;
• UI/UX-focused interface design and implementation;
• Pixel-perfect development from Figma designs;
• SEO optimization to improve search engine visibility;
• Website deployment and hosting configuration;
• Bug fixing and improvements for existing websites;
• Development of admin panels and SaaS interfaces.

I have over 2 years of experience in Frontend Development, as well as a background in Data Analytics. This combination allows me not only to create user-friendly interfaces but also to understand user behavior and build solutions that contribute to business growth.

Previously, I worked at SauleIT, an Estonian IT company, where I monitored high-load systems, analyzed user behavior, and identified anomalies to improve platform stability and user experience.

Later, I joined LiberSave, a German platform that provides a payment gateway and voucher system for physical and digital goods. There, I combined the roles of Frontend Developer and Technical Support Team Lead. I developed interfaces for the company's SaaS platform and user dashboards, implemented AI-powered support automation tools, and built an email template management service from scratch using NestJS and React.

I value responsibility, clear communication, and attention to detail. If you're looking for a developer who goes beyond writing code, takes the time to understand your business needs, and delivers practical solutions, I'd be happy to help😊.
  • English

    Native or bilingual

  • Spanish

    Basic

  • Russian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Liber Save
    Software Developer Frontend
    DIGITAL AND IT
    November 2024 - Today (1 year and 7 months)
    Granada, Spain
    • Developed a data import system for merchant platform (Excel /Google Sheets), improving product onboarding process
    • Built a multi-step upload flow with validation, error handling, and real-time user feedback
    • Collaborated with designers to define UX/UI and improve usability of complex workflows
    • Worked closely with backend team to design API contracts and dataprocessing logic
    • Implemented features for data synchronization and management, including scheduled sync and data updates
    • Designed and implemented an email delivery microservice (NestJS+ Nodemailer)
    • Created reusable React email templates with responsive layouts and server-side rendering
    • Developed cross-browser support for the website, maintained project technical documentation using tools such as GitBook and Postman
    PROJECT HIGHLIGHTS
    • Built complex data import UX flow (file parsing, validation, errorstates)
    • Developed email service with REST API and reusable templates
    • Experience working with real production data and edge cases
    Stack: NextJS, React, Redux TK, I18next, Material UI, NestJS
    NestJs Next.js React.js redux JavaScript
  • Saule IT Services
    Sports Betting Operations & Risk Control Special is
    DIGITAL AND IT
    April 2023 - November 2024 (1 year and 7 months)
    Tallinn, Estonia
    • Monitored and managed high-load live systems, ensuring datastability and UX
    • Analyzed user behavior and transactions to detect anomalies andreduce financial risk
    • Worked cross-functionally with support and technical teams toresolve complex issues
    • Handled edge cases and critical incidents in real-time, improvingsystem reliability
    • Prevented over €50,000 in potential company losses through real-time monitoring and investigation of suspicious sports betting activity
    Communication Data analysis UI Web Design UX Writing Technical testing

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Education

  • Web Technology
    Eesti Ettevõtluskõrgkool Mainor
    2025
    Web Technology

Skill set

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