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Daniel
@rat1la
I create things that make your life easier and better
Belarus
English, Russian
About me
🚀 Hi! I’m Daniel, a freelance developer & designer from Europe with 4+ years of experience building production-ready systems — from Telegram bots and backend services to mobile apps and UI/UX designs.
💡 I specialize in Java/Spring backend, mobile apps (Java/Kotlin/Flutter), Telegram bots, automation, and UI/UX design. I handle full project lifecycles, optimize high-load systems, and bring modern, creative solutions.
⚡ Let’s build something amazing!
https://ratiladev.netlify.app
Skills
Daniel
Offline •
Average response time: 1 hour
See my services
Rule Based Chatbots
I will develop a custom telegram bot for your business or personal use
T-Shirts & Merchandise
I will design custom apparel prints and merchandise graphics
Portfolio
Work experience
Java Developer
BelBot • Part-time
Dec 2021 - Jun 2025 • 3 yrs 6 mos
− Developed and maintained 15+ commercial Telegram/VK bots on Java + Spring Boot (from e-commerce to CRMs for salons and arbitrage projects). − Implemented Kafka in two projects to handle queues — prevented message loss under peak load. − Set up Docker + Kubernetes deployments — rollout time reduced from hours to 5–10 minutes. − Increased unit test coverage (JUnit 5 + Mockito) to 75–80% on key projects — regressions nearly eliminated. − Optimized a heavy algorithm for finding arbitrage paths — speed increased from 60–70 to 400+ operations in 25–30 seconds. − Managed projects end-to-end, from requirements to production.
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1-5 out of 5 Reviews
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moha200421
France
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edxeri
United States
Great to work with her; my lack of technical knowledge was met with patience and support. Application was exactly as she presented; which was after our explicit discussions.
Helpful?
tijani999
Nigeria
Very Fast and very Good, it was a Pleasure, Thank you
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genixsinc
United States
Helpful?
viviero
Poland
Благодарю за оперативность и понимание! Нам нужны были срочно майки для работы на выставке, теперь у нас есть концептуальный черный вариант, смотрится отлично!!! И этот зеленый ваиант нашего лого получился в современном виде. Приятно было иметь дело с новым и креативным дизайнером. Будем обращаться еще и еще!!!
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