# Daria Lazarenko

> Software Engineer @ Zelt

Location: London, England, United Kingdom
Profile: https://flows.cv/darialazarenko

I specialise in building responsive and maintainable web applications. My skills include optimizing website logic and architecture for efficient performance and seamless user experience. I work effectively with designers to ensure excellent UX and collaborate with the backend team to maintain accurate data flow. I adapt quickly to new technologies, consistently produce creative solutions, work well in team environments, and prioritise continuous learning.

With a record of efficient problem-solving and attention to detail, I am equipped to provide high-quality software solutions that meet and exceed expectations.

## Work Experience
### Software Engineer @ Zelt
Jan 2024 – Present | London, United Kingdom

### Frontend Developer @ ThreatAware
Jan 2024 – Jan 2024 | London, United Kingdom
- Refactored legacy code, which resulted in significant platform’s performance improvement.
- Developed complex, reactive logic streams using RxJS for efficient real-time data handling.
- Improved key features of the platform by fixing critical bugs and developing new functionality.
- Created customised, dynamic tables using AG-Grid for efficient handling of large data sets.

### Software Engineer @ Quantly
Jan 2023 – Jan 2024 | London, United Kingdom
- Developed new features that led to a notable increase in user engagement.
- Implemented frontend testing using Vitest and E2E testing with Playwright to ensure product stability.
- Created a website theme from the design library to maintain component consistency.
- Worked on a full-stack Next.js application.

### Intern Software Engineer @ Quantly
Jan 2023 – Jan 2023 | London, UK
- Built the initial frontend architecture, ensuring responsibility and maintainability.
- Implemented user interfaces using the React component library.
- Developed data visualisations with the ApexCharts library for financial analytics.
- Established data flow and communication with backend services using Axios.
- Collaborated with senior engineers to resolve technical challenges and deliver quality software solutions.


## Education
### Applied Mathematics
Odesa I.I.Mechnikov National University

### High School/Secondary Diplomas and Certificates
Odesa Lyceum Lanzheronivskyi


## Contact & Social
- LinkedIn: https://linkedin.com/in/daria-lazarenko
- Website: https://github.com/DariaLazarenko

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Source: https://flows.cv/darialazarenko
JSON Resume: https://flows.cv/darialazarenko/resume.json
Last updated: 2026-04-05