I am a frontend software engineer with 3+ years of experience building scalable web applications using Next.js, React, NestJS and TypeScript. I enjoy crafting complex user flows, integrating with APIs, and delivering features that put users first. I thrive in cross-functional collaboration and communication with designers and backend engineers to ship robust, maintainable solutions. Most recently I contributed at Liber Save as a remote frontend developer, where I built a data import system for merchant onboarding, designed a multi-step upload flow with validation and real-time feedback, and implemented an email delivery microservice. Previously at Saule IT Services I monitored high-load live systems and helped prevent financial risk, while also bringing a leadership mindset from my experience leading a technical support team under pressure.…

Daniil Sereda

5.0 (1 review)

I am a frontend software engineer with 3+ years of experience building scalable web applications using Next.js, React, NestJS and TypeScript. I enjoy crafting complex user flows, integrating with APIs, and delivering features that put users first. I thrive in cross-functional collaboration and communication with designers and backend engineers to ship robust, maintainable solutions. Most recently I contributed at Liber Save as a remote frontend developer, where I built a data import system for merchant onboarding, designed a multi-step upload flow with validation and real-time feedback, and implemented an email delivery microservice. Previously at Saule IT Services I monitored high-load live systems and helped prevent financial risk, while also bringing a leadership mindset from my experience leading a technical support team under pressure.…

Available to hire

I am a frontend software engineer with 3+ years of experience building scalable web applications using Next.js, React, NestJS and TypeScript. I enjoy crafting complex user flows, integrating with APIs, and delivering features that put users first. I thrive in cross-functional collaboration and communication with designers and backend engineers to ship robust, maintainable solutions.

Most recently I contributed at Liber Save as a remote frontend developer, where I built a data import system for merchant onboarding, designed a multi-step upload flow with validation and real-time feedback, and implemented an email delivery microservice. Previously at Saule IT Services I monitored high-load live systems and helped prevent financial risk, while also bringing a leadership mindset from my experience leading a technical support team under pressure.

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Skills

Experience Level

TypeScript
Expert
JavaScript
Expert
React JS
Expert
CSS
Expert
HTML5
Expert
Figma
Expert
Node.js
Intermediate
Redis
Intermediate

Language

English
Advanced
Russian
Fluent
Spanish; Castilian
Beginner

Work Experience

Frontend | Software Developer (Remote) at Liber Save
November 1, 2024 - Present
Developed a data import system for merchant platform (Excel / Google Sheets), improved product onboarding; Built a multi-step upload flow with validation, error handling, and real-time feedback; Collaborated with designers to define UX/UI; Worked with backend to design API contracts and data processing; Implemented data synchronization features including scheduled sync; Designed and implemented an email delivery microservice (NestJS + Nodemailer); Created reusable React email templates with responsive layouts and SSR; Built cross-browser support and documented the project using GitBook and Postman.
Sports Betting Operations & Risk Control Specialist at Saule IT Services
April 1, 2023 - November 1, 2024
Monitored and managed high-load live systems to ensure data stability and UX; Analyzed user behavior and transactions to detect anomalies and reduce financial risk; Collaborated with support and technical teams to resolve complex issues; Handled edge cases and critical incidents in real-time, improving system reliability; Prevented over €50,000 in potential losses through real-time monitoring and investigation of suspicious sports betting activity.

Education

Web Technology at Eesti Ettevõtluskõrgkool Mainor
January 11, 2030 - June 1, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Education, Other
    LiberSave

    A B2B2C fintech platform featuring digital vouchers, cashback, merchant loyalty programs and Open Banking payment integrations.

    • Developed merchant dashboard features for managing products, merchants and business settings
    • Implemented product import from Google Sheets and Excel, streamlining merchant onboarding
    • Improved the platform’s UX by developing dashboard interfaces with advanced filtering, reusable tables and modal workflows
    • Accelerated client-side data fetching using RTK Query with efficient caching and API state management
    • Developed a standalone email service with Nest.js and React Email for transactional emails and cross-client compatibility
    • Built complex forms with React Hook Form and Zod, reducing user input errors
    • Integrated Chart.js dashboards for analytics and business reporting
    • Created a reusable design system with Storybook, improving UI consistency and development speed
    • Conducted code reviews, fixed production issues and improved overall application stability
    • Collaborated with backend engineers and designers to deliver production-ready fintech features