REQB CPRE

ISTQB Foundation

Bachelor of Engineering in IT, Informatyka

• Developed and maintained media content platforms with Spring, Spring Boot, Drools.
• Built microservices for XML/XSLT processing with Spring and Apache Camel; integrated ActiveMQ for messaging.
• Designed application monitoring tools; wrote unit/integration tests (JUnit).
• Maintained code quality and automated CI/CD with Hudson and Jenkins.

Backend Engineer

• Built RESTful APIs with JAX-RS, managed Java Beans, and optimized server-database communication.
• Developed desktop MVC applications in JavaFX.
• Deployed/managed Java EE apps on Wildfly.
• Engaged with stakeholders for requirements; participated in all SDLC phases and code reviews.

Junior Backend Engineer

• Led backend and DevOps teams responsible for API development, system architecture, and production infrastructure
• Designed sub-millisecond orderbook aggregation system across multiple liquidity
sources; maintained scalable RESTful and WebSocket APIs for trading and analytics
• Architected solutions for blockchain data ingestion, analytics, and DeFi integrations
• Oversaw system scalability, reliability, and security with Kubernetes, Docker, CI/CD
• Established monitoring, observability, and incident management processes
• Mentored backend developers, performed code reviews, and promoted knowledge sharing

Senior Backend Engineer (Lead) — Web3 / DeFi

Binance Academy:

• Began as backend/full stack developer, building new features and maintaining APIs for Binance Academy’s global education platform.
• Progressed to owning the Academy backend, leading core API development and maintenance.
• Designed and implemented content management tools; worked with data teams on crypto stats and learning content.
• Supported and improved multilingual user experiences with frontend teams.

CMC (CoinMarketCap) & Integrations:

• Developed and maintained backend services to sync data with CoinMarketCap and other partners.

Marketing Platform:

• Transitioned to Marketing team, focusing on backend systems for campaign management, blog and news services, events APIs, and analytics.
• Added new features and maintained services to support marketing and content initiatives.

Backend Engineer (Full Stack exposure)

• Designed and implemented automated test suites for Java RESTful services and web apps.
• Developed test automation scripts for QA workflows.
• Collaborated with developers and stakeholders to ensure quality.
• Maintained and improved test solutions; oversaw full QA lifecycle and issue reporting.

QA Specialist

• Led development of web applications using React (Hooks, Redux, Redux-Saga), TypeScript, Bootstrap, HTML, and CSS.
• Designed and built backend services with Java, Spring Boot (Spring Data, Security, MVC), Couchbase.
• Maintained and enhanced a large-scale media content management system.
• Migrated legacy codebase to microservices for better scalability and maintainability.
• Automated testing and CI/CD via JUnit, Jenkins, GitHub Actions.
• Mentored junior developers and conducted code reviews.
• Collaborated with product managers and designers to deliver modern UIs.

• Built PDFTrackr, a backend-driven SaaS for secure document sharing and analytics, designing and operating backend systems using Node.js, PostgreSQL, Redis, and Cloudflare
• Implemented backend workflows for file processing, access control, and analytics data collection
• Worked on AI-assisted backend pipelines, focusing on prompt structure, validation layers, and output reliability

Senior Backend Engineer — Independent (SaaS & AI)

• Built backend services for price tracking, historical data aggregation, and user portfolio monitoring.
• Integrated DeFi APIs (token lists, price feeds, volume stats) to enhance dashboards.
• Implemented caching, transaction indexing, and high-performance data retrieval.
• Managed DevOps duties: cloud deployments (AWS/DigitalOcean/Vercel), CI/CD, Docker, Kubernetes.
• Set up monitoring, logging, and alerting to ensure high uptime and rapid response.
• Collaborated with product, frontend, and support teams on new features and bug fixes.
• Maintained security, authentication, authorization, and rate limiting for backend services.

Oleh Tsyupa

Independent Engineer