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denis_kotsiuba

Denis K

@denis_kotsiuba

AI Automation Business Systems Engineer

Serbia
Russian, English
About me
I help businesses fix unreliable web apps, APIs, and AI integrations. With 8+ years in software engineering, I work with Python, Django, FastAPI, React, TypeScript, Web3, and MCP. I diagnose backend and frontend issues, connect services through APIs and webhooks, automate workflows, and add practical AI features. I focus on the root cause, make the smallest reliable change, test the result, and provide a clear handover. You get maintainable work, clear communication, and no unnecessary complexity.... Read more

Skills

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denis_kotsiuba
Denis K
Offline • 

See my services

Bug Fixes
I will find and fix problems in your app or website
From$100 / projectMore details
API & Integrations
I will fix data transfer problems between your apps
From$150 / projectMore details

Work experience

Self-Employed_/ Freelancer

Web3 Engineer for Aquarius DeFi

Self-Employed / Freelancer

Aug 2025 - Jul 2026 • 11 mos

Designed and delivered backend workflows, APIs, data models, notifications, safeguards, migrations, and operational tools for a Stellar-based DeFi ecosystem. Rebuilt the complete governance lifecycle from submission and payment verification through scheduling, voting, and final status, with duplicate protection and admin controls. Verified the workflow with 218 lifecycle tests. Also built Telegram, Discord, and email notification delivery with subscription controls, filtering, suppression, and deduplication; the 491-test service reached staging.

1inch_Network

1inch Network

2 yrs 11 mos

Lead Developer / DAO Contributor

Dec 2023 - Aug 2025 • 1 yr 8 mos

Owned architecture, delivery, review, and release readiness for a governance-funded product spanning a user interface, asynchronous services, on-chain data, and security controls. Delivered the technical scope for two approved and executed governance programs totalling 139,000 USDC. Also designed an anti-phishing gateway with short-lived access and verification.

Web3 Engineer

Aug 2022 - Nov 2023 • 1 yr 3 mos

Built customer-facing transaction flows and integrations across React, TypeScript, Rust, WebAssembly, crypto wallets, and external data services. Worked on production Web3 interfaces and the supporting integrations required for reliable transaction execution.