> portfolio.init()
Mykola Balielov
Results-oriented Node.js Backend Engineer with a proven track record of delivering secure services, real-time financial data trackers, and automated assessment systems. Adept at drastically speeding up product delivery using Cursor AI and streamlining CI/CD pipelines. Brings a blend of robust engineering skills and teaching experience to mentor developers, automate code quality checks, and build highly resilient systems.
@WebSocketGateway({ cors: true })
export class AIAgentGateway {
@WebSocketServer()
server: Server;
@SubscribeMessage('voice_stream')
async handleStream(client: Socket, payload: AudioBuffer) {
// Initialize conversational AI pipeline
const response = await this.aiService.processAudio(payload);
this.server.emit('agent_reply', {
status: 'processing',
latency: 42,
data: response
});
}
}stack
Tools and platforms I use to build production-grade systems.
case study
One detailed case study from my portfolio - architected for scale and clarity.
AI-powered online platform for school testing: automated assessments, an AI test generator, and analytics so teachers can track classes and student performance in one place.
Key achievements
Tech stack
The majority of my backend architecture work, including low-latency WebSocket proxies for crypto data and enterprise communication platforms, is protected by strict Non-Disclosure Agreements. I am happy to discuss the architectural challenges, system design, and optimization strategies of these projects during an interview.
practice
Two threads that shape how I work: disciplined delivery and teaching the next generation.
Automated CI/CD pipelines with tight feedback loops - leveraging Claude AI in the loop for reviews, test generation, and documentation - so every merge stays predictable and auditable.
Teaching computer science fundamentals - algorithms, complexity, and systems thinking - so learners build durable mental models, not just syntax.
Building low-latency data pipelines and WebSocket systems for live financial tracking and seamless communication.
Architecting and maintaining highly available backend infrastructure across cloud providers to ensure zero downtime and optimal data access.