# cosmonight.codes

> Backend / Java Engineer with 10+ years building high-load systems. Interactive terminal portfolio.

## About

- Handle: cosmonight
- Role: Backend / Java Team Lead
- Experience: 10+ years
- Location: Europe
- Contact: hey@nyxnight.codes
- Available for: B2B contracts

## Key Achievements

- Built microservice platform from scratch → 1M+ unique users, 40M+ req/day, 1K RPS peak
- Grew backend team from 1 to 7 engineers
- Adopted agentic AI tools (Claude Code, Cursor) with multi-agent workflows

## Technical Skills

- Languages: Java 17-21+, SQL, Node.js, PHP
- Java Ecosystem: Spring Boot 3, WebFlux, Spring Security, Spring Cloud, Hibernate, R2DBC
- Databases & MQ: PostgreSQL, MySQL, Redis, ElasticSearch, RabbitMQ
- Infra & DevOps: Docker, Kubernetes, Ansible, Nginx, Linux
- CI/CD: GitLab CI, GitHub Actions, Bitbucket Pipelines
- Frontend & Mobile: React, Vue.js, React Native, Flutter (AI-augmented)
- AI/ML: NVIDIA GB10 Blackwell, Ollama, Whisper, ComfyUI, n8n

## Experience

### Java Team Lead — Dec 2021 → Present
High-load advertising platform, microservice architecture.
Stack: Java 21, Spring Boot, Docker, Ubuntu.

### Backend Developer & DevOps — Nov 2016 → Nov 2021
Real estate, influencer marketing, messaging, fitness platforms.
Stack: PHP, Laravel, Node.js, Vue.js, React, PostgreSQL, Redis, RabbitMQ, Docker, AWS.

## Side Projects

- home-lab: K8s via Ansible, GB10 GPU server, Ollama, Whisper, ComfyUI, n8n
- project-vault: Finance app — Java 21 WebFlux, React Native, AI receipt scanning
- project-kanban: Cross-platform task manager with Kanban, timers, workspaces
- project-lexicon: Multilingual dictionary — Web, Android, iOS, Chrome Extension
- project-feed: News crawler with ElasticSearch full-text search

## Contact

- Email: hey@nyxnight.codes
- Site: cosmonight.codes
- Format: B2B preferred