I am a Senior React Fullstack Developer / contractor / freelancer with 5+ years of experience, with proven expertise in the information technology and services industry. I use my expertise, skills, and passion to design and implement top-of-the-line software solutions for companies world wide. Drop me a message if you think my expertise could help your organization!

Marcel Ardelean

I am a Senior React Fullstack Developer / contractor / freelancer with 5+ years of experience, with proven expertise in the information technology and services industry. I use my expertise, skills, and passion to design and implement top-of-the-line software solutions for companies world wide. Drop me a message if you think my expertise could help your organization!

Available to hire

I am a Senior React Fullstack Developer / contractor / freelancer with 5+ years of experience, with proven expertise in the information technology and services industry. I use my expertise, skills, and passion to design and implement top-of-the-line software solutions for companies world wide.

Drop me a message if you think my expertise could help your organization!

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Romanian, Moldavian, Moldovan
Fluent
English
Fluent

Work Experience

Senior React Fullstack Engineer at Victory Square Partners
November 2, 2025 - November 2, 2025
Led development of a cloud-based access control platform for a leading US provider; increased feature set by 180% per MVP; delivered UI improvements and modern design guidelines to enhance user experience.
Senior React Fullstack Engineer at Victory Square Partners
August 2, 2024 - August 2, 2024
Managed development of a cloud-based access control platform; expanded features by 180% per MVP; improved UI refreshing and aligned with modern design guidelines.
Senior React Fullstack Engineer at Victory Square Partners
August 2, 2023 - August 2, 2023
Cloud-based access control platform; faced challenges in maintaining a clean codebase while releasing numerous features under feature flags. Reduced the number of Feature Flags by 10% by performing systematic cleanup, simplifying the codebase and improving maintainability.
Expense Manager at The Client (Early-stage Startup)
August 2, 2022 - August 2, 2022
As part of an early-stage startup, increased the number of features by 200% by implementing new, impactful functionalities such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Senior React Fullstack Engineer at Victory Square Partners
November 1, 2025 - November 1, 2025
Led development on a cloud-based access control platform for a US client. Increased feature set by 180% through MVP-driven quarterly iterations across ReactJS frontend and NodeJS backend, with a Postgres data layer. Implemented new functionalities, delivered UI refresh with modern design guidelines, improved user experience by 50%, and contributed to DevOps and cloud deployment on AWS. Conducted code reviews, performance optimizations, and maintained strong collaboration with product and design teams.
Senior React Fullstack Engineer at Victory Square Partners
August 1, 2024 - August 1, 2024
Contributed to reducing complexity and improving maintainability by systematically cleaning up legacy feature flags, resulting in a 10% reduction in total feature flags while continuing to deliver value with new features.
Senior React Fullstack Engineer at Victory Square Partners
August 1, 2023 - August 1, 2023
Scaled platform reliability by simplifying the codebase and managing feature releases, reducing customer escalations through regular demos to showcase new features, collect feedback, and align with customer expectations.
Expense Manager at The client (early-stage startup)
August 1, 2022 - August 1, 2022
Helped expand the functionality of the application, increasing the feature set by 200% by implementing impactful features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Senior React Fullstack Engineer at Victor Square Partners (Client: leading US cloud-based access control provider)
November 2, 2025 - November 2, 2025
Increased features by 180% by implementing new impactful functionalities in every quarter, significantly enhancing product capabilities; improved user experience by over 50% through a complete UI refresh and the implementation of modern design guidelines.
Senior React Fullstack Engineer at Victor Square Partners (Client: leading US cloud-based access control provider)
August 2, 2024 - August 2, 2024
Increased features by 180% by implementing new functional features and led a rapid addition of new features, with a strong UI refresh and design guidelines.
Senior React Fullstack Engineer at Victor Square Partners (Client: leading US cloud-based access control provider)
August 2, 2023 - August 2, 2023
Reduced the number of Feature Flags by 10% by performing a systematic cleanup of legacy feature flags, simplifying the codebase and improving maintainability.
Expense Manager at Victor Square Partners (Client: leading US cloud-based access control provider)
August 2, 2022 - August 2, 2022
Increased the number of features by 200% by implementing new impactful functionalities like changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Senior React Fullstack Engineer at Victory Square Partners
August 1, 2022 - August 1, 2022
The client, an early-stage startup, built the Expense Manager app; improved functionality and user experience to support growth.
Expense Manager at The client, an early-stage startup
August 2, 2022 - August 2, 2022
Owned the expense management functionality, significantly expanding capabilities. Increased the number of features by 200% by implementing impactful features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses. Collaborated with the team to improve usability and reliability.
Senior React Fullstack Engineer at The Client (Expense Manager project)
August 1, 2023 - August 1, 2023
Worked on the Expense Manager project; expanded functionality by implementing features such as password changes, email updates, account deletion, and adding/viewing expenses, contributing to a significant growth in the app's capability.
Senior React Fullstack Engineer at The Client (Expense Manager project)
August 1, 2022 - August 1, 2022
Early engagement on the Expense Manager project; contributed to expanding functionality and improving system reliability, while addressing challenges typical of near-stage startups.
Expense Manager at The Client (Early-stage Startup)
November 2, 2021 - August 2, 2022
Addressed challenges in expanding application functionality by introducing high-impact features (password changes, email updates, account deletions, and expense management) to support growth and improve user workflow.
React Fullstack Engineer at Victory Square Partners
September 2, 2022 - August 2, 2023
Worked on a cloud-based access control platform, addressing the difficulty of maintaining a clean codebase as features evolved; performed systematic clean-up of legacy feature flags, simplifying the codebase and improving maintainability; contributed to overall platform reliability.
Expense Manager at The Client (Startup)
November 2, 2021 - August 2, 2022
Early-stage startup; expanded functionality of the application, increasing features and capabilities by delivering key improvements, such as password changes, email updates, account deletion, and expense management.
Senior React / Node Engineer at Victory Square Partners
September 2, 2024 - December 2, 2025
Cloud-based access control platform work for a leading US provider of cloud-based access control and smart building services. Achieved a 2x increase in development speed by following an iterative MVP-driven approach, expanding platform functionality, and improving user experience through modern UI redesigns.
Senior React / Node Engineer at Victory Square Partners
September 2, 2023 - August 2, 2024
Led development for a client in cloud-based access control and smart building services; achieved a 2x increase in speed of development; improved user experience through modern UI redesigns.
Senior React / Node Engineer at Victory Square Partners
September 2, 2022 - August 2, 2023
Faced challenges maintaining a clean codebase while releasing numerous features; reduced feature flags by 50% and improved product stability; led demos to showcase new features and ensure alignment with customer expectations.
Expense Manager at The client
September 2, 2021 - August 2, 2022
Early-stage startup; significant challenges expanding the functionality of their application. Increased the feature set by implementing impactful functionalities such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Senior React / Node Engineer at The client (early-stage startup) - Expense Manager project
November 2, 2021 - August 2, 2022
Expanded application functionality by implementing features such as password changes, email updates, account deletion, and expense management (adding/viewing expenses).
React Developer at Victory Square Partners
September 1, 2021 - August 31, 2022
Contributed to cloud-based access control platform, building features and collaborating with the team to improve code quality and deliverables.
Senior React / Node Engineer at Victory Square Partners (Client: Cloud-based access control platform)
September 1, 2024 - December 1, 2025
Sep 2024 - Dec 2025: Delivered on a cloud-based access control platform. Achieved 2x development speed by following an MVP-driven approach and expanded platform functionality. Improved user experience through modern UI redesigns and streamlined workflows.
Senior React / Node Engineer at The Client - Expense Manager (early-stage startup)
September 1, 2022 - August 1, 2023
Sep 2022 - Aug 2023: Expanded the application functionality, leading to a 200% increase in features by implementing new capabilities such as password changes, updating emails, deleting accounts, and expense management.
Senior React / Node Engineer at The Client - Expense Manager (early-stage startup)
November 1, 2021 - August 1, 2022
Nov 2021 - Aug 2022: Played a key role in expanding features and stabilizing the product, addressing early-stage startup challenges and contributing to scalable frontend/backend enhancements.
React Developer at Victory Square Partners
September 2, 2022 - August 2, 2023
Experienced difficulties in maintaining a clean codebase while releasing numerous features to production under feature flags. Reduced the number of feature flags by 10% via systematic cleanup of legacy flags, simplifying the codebase and improving maintainability.
Senior Expense Manager at Expense Manager
September 2, 2021 - August 2, 2022
Early-stage startup environment; expanded the application’s functionality by implementing high-impact features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses, effectively increasing feature coverage by about 200%.
React Fullstack Engineer at Victory Square Partners
September 1, 2023 - August 1, 2024
Drove stability during rapid feature growth by reducing customer escalation tickets by 50% and improving overall product reliability. Regularly led feature demos to collect feedback, reducing support questions by 25% and ensuring alignment with customer expectations.
React Engineer at Victory Square Partners
September 1, 2022 - August 1, 2023
Maintained a clean codebase while releasing numerous features under feature flags. Reduced the number of legacy feature flags by 10% to simplify the codebase and improve maintainability.
React Fullstack Engineer at Expense Manager
November 1, 2021 - August 1, 2022
Expanded application functionality for an early-stage startup, increasing features by 200% by implementing new capabilities such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Expense Manager at Expense Manager
September 1, 2021 - August 1, 2022
The client, an early-stage startup, faced significant challenges expanding functionality. Increased feature count by 200% by implementing key features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Senior React / Node Engineer at Victory Square Partners
December 2, 2020 - August 2, 2022
Expense Manager project for a client startup. Addressed significant challenges while expanding functionality; increased feature count by 200% by implementing new impactful features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses.
Expense Manager at The Client
September 2, 2020 - August 2, 2022
Early-stage startup project work focusing on expanding the application functionality, including implementing features like authentication improvements and expense management modules.
Expense Manager at Victory Square Partners
January 2, 2021 - August 2, 2022
Worked with an early-stage startup client to expand the application's functionality. Increased the number of features by 200% by implementing impactful features such as changing passwords, updating emails, deleting accounts, and adding/viewing expenses. Technologies used included ReactJS, NodeJS, TypeScript, PostgreSQL, and REST APIs.
Expense Manager at The Client (Startup) - Cloud Access Platform Project
September 2, 2021 - August 2, 2022
Led expansion of application functionality by 200% through features like password changes, email updates, account deletions, and expense tracking; demonstrated a drive to improve UX and data handling; skills used include ReactJS, Node.js, PostgreSQL, TypeScript, REST APIs, and AWS.
Senior React / Node Engineer at Unnamed Startup (Client project)
September 1, 2022 - August 31, 2023
Contributed as a React/Node engineer on a cloud-based access control platform for a client startup. Implemented features to expand platform functionality and improve reliability. Led UI/UX improvements and performance optimizations. Worked closely with product and design teams to ship features with quality and maintainability.

Education

Mentorship Program in Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor’s Degree in Automation & Computer Science at Politehnica University of Timisoara
January 1, 2017 - January 1, 2020
Mentorship Program (Software Development) at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - October 27, 2025
WellCode Mentorship Program at Online (WellCode Mentorship Program)
January 1, 2020 - December 31, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University of Timisoara
January 1, 2017 - October 29, 2025
Mentorship Program (Software Development) at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - November 7, 2025
Mentorship Program in Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
Mentorship Program at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - November 26, 2025
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
Software Development Mentorship Program at WellCode Mentorship Program (Online)
January 1, 2020 - January 1, 2021
Bachelors Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program in Software Development at WellCode (Online)
January 1, 2020 - January 1, 2021
Bachelor’s Degree in Automation & Computer Science at Politehnica University of Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program at WellCode
January 1, 2020 - January 1, 2021
WellCode Mentorship Program in Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor’s Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
Mentorship Program at WellCode Mentorship Program
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program - Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program in Software Development at WellCode
January 1, 2020 - December 31, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
Software Development Mentorship Program at WellCode Mentorship Program
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 22, 2026
Software Development at WellCode Mentorship Program
January 1, 2020 - January 1, 2021
Bachelor’s Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 22, 2026
Mentorship Program in Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program in Software Development at WellCode (Online)
January 1, 2020 - January 31, 2026
Mentorship Program in Software Development at WellCode Mentorship Program for Software Development (Online)
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - February 5, 2026
WellCode Mentorship Program in Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University of Timisoara
January 1, 2017 - February 5, 2026
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program at Online
January 1, 2020 - December 31, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University of Timisoara
January 1, 2017 - January 1, 2020
WellCode Mentorship Program - Software Development at WellCode
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science at Politehnica University Timisoara
January 1, 2017 - March 13, 2026
WellCode Mentorship Program, Software Development at WellCode
January 1, 2020 - December 31, 2021

Qualifications

WellCode Mentorship Program
January 1, 2020 - December 31, 2021
WellCode Mentorship Program (Software Development)
January 1, 2020 - January 1, 2021
WellCode Mentorship Program in Software Development
January 1, 2020 - January 1, 2021
WellCode Mentorship Program (Software Development)
January 1, 2020 - January 1, 2021
WellCode Mentorship Program in Software Development
January 1, 2020 - January 1, 2021
Bachelor’s Degree in Automation & Computer Science
January 1, 2017 - January 1, 2020
WellCode Mentorship Program - Software Development
January 1, 2020 - January 1, 2021
WellCode Mentorship Program in Software Development
January 1, 2020 - December 31, 2021
WellCode Mentorship Program in Software Development
January 1, 2020 - January 1, 2021
Bachelor's Degree in Automation & Computer Science
January 1, 2017 - February 5, 2026
WellCode Mentorship Program - Software Development
January 1, 2020 - December 31, 2021
Bachelor’s Degree in Automation & Computer Science
January 1, 2017 - March 13, 2026

Industry Experience

Software & Internet, Professional Services, Computers & Electronics, Media & Entertainment