Victor is currently unavailable
Victor Balan
Verified Expert in Engineering
Software Developer
Cluj-Napoca, Cluj County, Romania
Toptal member since March 26, 2018
Bio
Victor is a highly motivated developer with a passion for learning. Over the past five years, he has gained experience working with various frameworks and languages. On the back end, Victor has primarily worked with Node.js while also demonstrating proficiency in Java and Go. When it comes to the front end of applications, Victor has utilized Thymeleaf, AngularJS, Polymer, and React.
Portfolio
Social News Desk, Inc.
JavaScript, React, Node.js, AWS Lambda, Git, Freelancing, Software Development...
Centrys
GoLand, React, Go, Spring Cloud, Blockchain, Solidity, Node.js, Git...
Aera
Docker, Polymer, Spring Cloud, Java, Git, Freelancing, MySQL...
Experience
- Node.js - 7 years
- JavaScript - 6 years
- Java - 6 years
- Spring - 5 years
- React - 4 years
- Microservices Architecture - 2 years
- Blockchain - 2 years
- Go - 2 years
Preferred Environment
MacOS, WebStorm, IntelliJ IDEA
The most amazing...
...thing I've implemented is a neural network which was able to detect pedestrians with an accuracy of 89%.
Work Experience
Full-stack React/Node.js Developer
2019 - PRESENT
Social News Desk, Inc.
- Built a live social-media-to-broadcast application that lets TV presenters configure layouts and interact with social posts in real time on air.
- Built a content scheduling platform with a responsive drag-and-drop calendar, handling 100+ social accounts and 2,000+ concurrent posts.
- Led the full migration of the front-end codebase from AngularJS to React.
- Developed a unified content publishing platform supporting all major social networks, with integrated AI-powered content suggestions.
- Created a social network content archiving tool for long-term storage and compliance.
- Maintaining and optimizing internal LLM documentation to improve AI-assisted development workflows across the engineering team.
Technologies: JavaScript, React, Node.js, AWS Lambda, Git, Freelancing, Software Development, Software Design, Agile Software Development, GitHub, HTML, SCSS, Claude Code
Blockchain Consultant
2018 - 2019
Centrys
- Implemented a digital wallet for the Aion blockchain.
- Developed JavaScript blockchain interaction helpers.
- Implemented custom RLP and transaction signing for JavaScript.
- Built an end-to-end (front end to blockchain) message signing/decryption mechanism.
- Implemented a hierarchical deterministic keypair generation algorithm for the Aion blockchain (SLIP-0010).
- Developed and coordinated the implementation of a fully decentralized exchange house.
- Implemented a Chrome extension for the Aion wallet.
Technologies: GoLand, React, Go, Spring Cloud, Blockchain, Solidity, Node.js, Git, Freelancing, MySQL, Software Development, Software Design, Agile Software Development, SQL, Spring Boot, Spring MVC, GitHub, HTML, SCSS
Software Developer
2016 - 2018
Aera
- Added dependency management and updated the build system from Ant to Gradle.
- Modernized the existing application by splitting code into multiple self-sustained modules and redesigning the architecture from monolith to microservices.
- Built a visual programming tool for less technical or non-technical people.
- Created a UI-building tool for non-technical people.
- Implemented a JSON configuration protocol for defining dynamic UI rendering.
- Implemented dynamic UI rendering for web applications using the newly defined JSON protocol.
Technologies: Docker, Polymer, Spring Cloud, Java, Git, Freelancing, MySQL, Software Development, Software Design, Agile Software Development, SQL, Spring Boot, Spring MVC, HTML, SCSS
Software Developer
2013 - 2016
Cloudflight
- Developed an enterprise-scale dealer management system using Spring, Tapestry, and Thymeleaf.
- Implemented a powerful rendering engine with JavaFX and OpenGL.
- Created an application for wind turbine anomaly detection using images from autonomous drones.
- Built a technical interview platform supporting 20+ programming languages with secure sandboxed code execution.
- Created a multiplayer game where players programmed their characters' behavior via provided APIs.
Technologies: OpenGL, Polymer, Thymeleaf, AngularJS, JavaFX, Spring, Go, Docker, Node.js, Git, MySQL, Software Development, Software Design, Agile Software Development, SQL, HTML, SCSS
Intern Software Developer
2013 - 2013
Tecknoworks
- Implemented an internal time management tool using Node.js.
- Built an internal seat management application that dynamically assigned different seats every week so that everyone had the opportunity to interact with one another.
- Completed the development of the application earlier than expected.
Technologies: Node.js, Git, Software Development, Software Design, HTML
Experience
Koding Hackathon
Got a place in the top 10 out of 98,000 teams in the 2016 Koding Hackathon.
I developed a racing game for kids to learn programming. They had a car configuration file and needed to write rules for how the car would behave in certain situations using JavaScript.
I developed a racing game for kids to learn programming. They had a car configuration file and needed to write rules for how the car would behave in certain situations using JavaScript.
Aion Desktop Wallet
https://github.com/aionnetwork/aion_uiA standalone desktop wallet for the Aion blockchain. Besides the usual transaction sending and history, it is possible to create and restore multiple accounts with a single mnemonic with the help of the custom implementation of hierarchical deterministic keypair generation (SLIP-0010).
Porscheinformatik - CrossNG
Developed an enterprise dealer management system with the front office, back office, and dynamic roles and rights management.
This project had the most complex business logic you can get, being aware of different country regulations, time zones, and user roles and rights hierarchy.
This project had the most complex business logic you can get, being aware of different country regulations, time zones, and user roles and rights hierarchy.
Aerodyne
A wind turbine malfunction detection tool. In the first stage, this was a drone image rendering tool on a 3D wind engine model. Based on the geolocation from the images, there were arrows indicating the orientation and position rendered around the wind engine model. In the next phase of the application, the human-detected malfunction was fed into a machine-learning algorithm so the malfunctions could be detected without human interaction.
Coduno
A technical interview platform implemented with Go, Polymer, and Docker.
FEATURES
• 20 programming languages supported
• Easily configurable challenges
• Secure Docker Runner for running the user code
FEATURES
• 20 programming languages supported
• Easily configurable challenges
• Secure Docker Runner for running the user code
Coduno - Battlegrounds
A multiplayer game for software developers implemented with Go. Users need to implement their characters using different APIs (Go, Python, and Java). Once they upload the character file, they enter the battleground arena where their character is in a last-man-standing game with 99 other user characters.
Twitter Heatmap Analysis
A real-time tweet analysis app made with Node.js and MarkLogic. You can search via real-time tweets filtered by geolocation to show only Romania. It has a full-text search and can generate heat maps based on a number of tweets for a specific subject or based on sentiment analysis.
AeraTechnology
CONTRIBUTIONS
• Built a visual programming tool for less technical or non-technical people.
• Created a UI-building tool for non-technical people.
• Implemented a JSON configuration protocol for defining dynamic UI rendering.
• Implemented dynamic UI rendering for web applications using the newly defined JSON protocol.
• Built a visual programming tool for less technical or non-technical people.
• Created a UI-building tool for non-technical people.
• Implemented a JSON configuration protocol for defining dynamic UI rendering.
• Implemented dynamic UI rendering for web applications using the newly defined JSON protocol.
Theo Project
"A fully decentralized global marketplace" is the motto for the Theo project. It contains multiple projects under its wing, but the most notable is a fully decentralized exchange house based on the Aion public blockchain.
Education
2012 - 2015
Bachelor's Degree in Computer Science
Babes-Bolyai University - Cluj-Napoca, Romania
Skills
Libraries/APIs
React, Node.js, Polymer, OpenGL
Tools
Git, GitHub, Postman, IntelliJ IDEA, WebStorm, GoLand, Claude Code
Languages
JavaScript, Java, SQL, HTML, Go, CSS, SCSS, Solidity, Python
Frameworks
Spring Boot, Spring MVC, Spring, Redux, AngularJS, Thymeleaf
Paradigms
Agile Software Development, Microservices Architecture, Concurrent Programming, Object-oriented Programming (OOP)
Platforms
Nexus, Amazon Web Services (AWS), Linux, AWS Lambda, MacOS, Docker, JavaFX, Blockchain
Storage
MySQL, MongoDB, Amazon S3 (AWS S3), MarkLogic, PostgreSQL
Other
Spring Cloud, Scalable Web Services, Freelancing, Netflix OSS, Software Development, Software Design
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring