Віталій

VITALII LOTOTSKYI
SOFTWARE ENGINEER | KOTLIN & JAVA
Lviv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)
portfolio.knalis.rest | github.com/knliiss | LinkedIn

PROFESSIONAL SUMMARY
Software engineer specializing in Kotlin/Java backend and full-stack development. Built and maintained independent
products with active users and paid features, including event-driven and high-concurrency systems.

TECHNICAL SKILLS
Languages: Kotlin, Java, TypeScript, Rust, Go
Backend: Spring Boot, REST APIs, Apache Kafka, WebSocket
Frontend: React, WebAssembly
Data & tools: PostgreSQL, Redis, Docker, Keycloak, Git, JUnit

EXPERIENCE
Independent Software Engineer | Product development
Mnemos | Event-driven platform
Kotlin · Spring Boot · Kafka · PostgreSQL · React · TypeScript
• Designed and deployed a microservice platform used by approximately 150 people, with paid features and real-time
updates.
• Implemented Kafka event processing, WebSocket delivery, Keycloak authentication, and transactional outbox/inbox
patterns.
github.com/knliiss/Mnemos
C7xBotManager | Concurrent automation platform
Java · Go · Java NIO · WebView2
• Built a headless Java runtime handling up to 500 concurrent client sessions using non-blocking I/O, proxy
management, and diagnostics.
• Developed a Go-based desktop shell for a niche product used by around 10 people and distributed through one-
time purchases.
github.com/knliiss/C7xBotManager

PROJECTS
Studium | Full-stack LMS (academic project)
Java · Spring Boot · React · TypeScript · PostgreSQL
• Developed and tested a role-based learning platform with microservices, an API gateway, asynchronous events,
and a React frontend.
github.com/knliiss/Studium
WaveCode | Open-source optical-code SDK and web scanner
Rust · WebAssembly · React · TypeScript
• Designed an error-correcting optical format for music links and built a cross-platform Rust SDK plus a mobile-first
browser scanner and encoder.
github.com/knliiss/WaveCode | github.com/knliiss/WaveCode-Web

ACHIEVEMENTS
BEST Engineering Competition (BEST Lviv)
2026 — 1st place, Innovative Design; Airlogix “Most Creative Approach” award.
2025 — 2nd place, Team Design.

EDUCATION
Lviv Polytechnic National University
Software Engineering, Bachelor’s program — 3rd year (in progress)

LANGUAGES
Ukrainian — Native | English — B1