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MARYNA YEFIMENKO

Lead frontend developer @ SNDQ
Antwerp, Belgium

Highly organized and system-oriented frontend engineer with a strong background in complex technical environments, finance, and contracts. Combines experience in regulated industries with modern web technologies to build scalable, maintainable digital solutions. Skilled in structuring processes, documentation management, and translating business needs into robust, well-architected applications.

Top roles

Developer / Programmer< 2 years
Technical Analyst5 - 10 years

Front-end

JavaScript
CSS
HTML
Bootstrap
TypeScript
React
Node.js

Design / UI-UX

Figma
Adobe illustrator
Language
Native Russian
Russian
Native
Ukrainian
Native
English
Good
Dutch
Average
Work experience
Since 2012
Lead frontend developer @ SNDQ
01 January 2024 - 31 December 2025

Worked on a complex real estate management web application (contracts, finance, document flow, collaboration modules). Used WeWeb for low-code development, extending it with custom JavaScript for advanced features. Collaborated with an international cross-functional team, working closely with designers, backend developers, and managers in an Agile/Scrum format. Key achievements: -Standardized UI across 3 products by developing a reusable component library (40+ components). -Wrote internal FE documentation defining architecture, code standards and best practices. -Integrated complex business logic: multi-page forms, API interactions, data validation and transformation. -Led frontend quality control for 35–50 pages; conducted code reviews, enforced standards. -Supported clients: attended meetings, resolved objections, implemented production hotfixes. -Contributed to performance audits and frontend optimization strategies. Technologies: JavaScript, WeWeb, Xano (API & DB), Linear, Notion.

Frontend Developer @ SNDQ
01 January 2023 - 31 December 2024

Worked on a complex real estate management web application (contracts, finance, document flow, collaboration modules). Used WeWeb for low-code development, extending it with custom JavaScript for advanced features. Collaborated with an international cross-functional team, working closely with designers, backend developers, and managers in an Agile/Scrum format. Key achievements: -Standardized UI across 3 products by developing a reusable component library (40+ components). -Wrote internal FE documentation defining architecture, code standards and best practices. -Integrated complex business logic: multi-page forms, API interactions, data validation and transformation. -Led frontend quality control for 35–50 pages; conducted code reviews, enforced standards. -Supported clients: attended meetings, resolved objections, implemented production hotfixes. -Contributed to performance audits and frontend optimization strategies. Technologies: JavaScript, WeWeb, Xano (API & DB), Linear, Notion.

Intern @ SNDQ
01 January 2023 - 30 April 2023

Worked on a complex real estate management web application (contracts, finance, document flow, collaboration modules). Used WeWeb for low-code development, extending it with custom JavaScript for advanced features. Collaborated with an international cross-functional team, working closely with designers, backend developers, and managers in an Agile/Scrum format.

Engineer - Equipment Modernization Group @ Zaporizhzhia Nuclear Power Plant, Ukraine
01 January 2013 - 31 December 2022

Oversaw modernization of electrical systems at a nuclear facility, managing the full cycle: from technical and economic justifications to contract negotiation and project documentation. Coordinated cross-department approvals, procurements, and compliance with national standards. Key achievements: -Managed €28M+ modernization plan; prepared, presented, and tracked annual budgets. -Led procurement cycles, evaluating 170+ tenders per year with full technical review. -Developed internal asset tracking system, improving transparency and efficiency. -Reviewed 90+ project document sets yearly; created 200+ detailed cost estimates (AVK-5). -Facilitated multi-team coordination across 7 technical departments. Technologies: AVK-5, SAP ERP, MS Office, internal systems for document control and budget tracking.

Electrical technician @ Zaporizhzhia Nuclear Power Plant, Ukraine
01 January 2012 - 31 December 2013

Oversaw modernization of electrical systems at a nuclear facility, managing the full cycle: from technical and economic justifications to contract negotiation and project documentation. Coordinated cross-department approvals, procurements, and compliance with national standards.

Education experience
Since 2008
FrontEnd development @ Udemy, GeekBrains, Coursera
01 January 2020 - 31 December 2022

Integrated knowledge of modern frontend practices: responsive layout, semantic HTML, DOM manipulation, working with classes, dates, regex, component logic in React, routing, deployment, and project builds.

Power Plants @ SNUNEI, Ukraine
01 January 2007 - 31 December 2012

Diploma with honors, GPA 4.83 out of 5. Higher mathematics, engineering graphics, computer technology and programming, automatic control theory, microprocessor technology, production organization and management.

Specialized Computer Systems @ SNUNEI, Ukraine
01 January 2008 - 31 December 2009

Mathematical logic and programming, object-oriented programming, computer graphics, industrial electronics.

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