Sergei Droganov
Product Engineer- React
- TypeScript
- NodeJS
- GraphQL
- OpenApi
- Python
- PostgreSQL
- FastAPI
- OpenAI
- LangChain
Services
Product Design
Inventing and visualizing new product concepts, optimizing functionality, and applying user-centric design principles to improve user interaction and satisfaction.
Technology Advise
Assessing and integrating the most suitable technologies, frameworks, and tools to meet product requirements and performance goals while ensuring cost-effectiveness and scalability.
Process Design
Designing and executing efficient digital processes, enhancing workflow, reducing overhead, and aligning digital strategies with product objectives.
Prototype Development
Building and testing digital prototypes to verify design assumptions, assess feasibility, and garner user feedback for iterative improvement and optimization of digital interfaces and workflows.
Quality Control
Implementing stringent quality control measures, including regular code reviews, automated testing, and performance audits, to ensure digital products meet high standards of usability, performance, and security.
Maintenance and Support
Providing proactive software maintenance, periodic system updates to ensure optimal functionality and enhanced security, alongside performing root cause analysis and troubleshooting for technical issues.
Highlights
With 24 Years of Experience
My extensive career spans various sectors including Advertising, E-Commerce, Logistics, Education, and FinTech, equipping me with a diverse set of skills and perspectives.
Based in Belgrade, Serbia
Located in Serbia, I offer my services globally, operating either as a Serbian entity, a sole proprietor, or through an agency, ready to engage in remote work opportunities.
ESG Metrics Dashboard
I've successfully implemented an ESG metrics dashboard using React and DevExtreme for an Irish FinTech startup, allowing both predefined and custom metrics display.
WebRTC Streaming Platform
By replacing AWS MediaLive with Red5 WebRTC streaming, I managed to cut the latency from 30 seconds down to 0.5 seconds, resulting in a significant cost reduction from $100K to a mere $600 per month.
Twitter Data Research Tool
Developed a React frontend using Three.js 3D network graph for a Twitter data research tool, employing a paid Twitter API to collect and transform data into visual graphs.
Survey Editor and Display Applications
I designed and implemented a React frontend for a sophisticated survey platform, incorporating advanced features like campaigns, reports, data export options, rules, and conditions, along with a display application for standalone and embedded use.
E-commerce Site for a Cosmetics Brand
Successfully transitioned a legacy HTML webstore to a more dynamic React-based platform with server rendering, leading to improved usability, performance metrics, and conversion rate.
Intranet Portal with Real-Time Features
Built a fully-featured corporate intranet portal incorporating real-time functionalities such as messenger services, notifications, and a news feed.
Intranet Portal for a Logistics Company
Engineered a comprehensive corporate intranet portal featuring newsfeeds, forums, calendars, event management tools, galleries, and more, designed to streamline internal communication.
Web-Based ERP for a Logistics Company
Designed and deployed a web-based ERP system to streamline the delivery processes of a logistics company. The system was used at a substantial scale for over a decade.