Freelancers in Kyiv
Freelancers in Kyiv
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Nick Zaitsev
Kyiv, 02000
UI/UX designer and Art-Director with 10 years of experience
1x
Hired
5.0
Rating
50
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UI/UX designer and Art-Director with 10 years of experience
1
Ginga. Football Tracker App
1
16
2
BOLDR. Smart Home Mobile App
2
13
0
Totom. Concert Ticket Booking App
0
12
0
Blank AI. Chat GPT-Powered AI Assistant
0
12
Internet of Things
(2)
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Maks Podkolzin
pro
Kyiv, 02000
Full-Stack SaaS, Automation & AI Developer
New to Contra
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Full-Stack SaaS, Automation & AI Developer
1
Built and developed a production-oriented full-stack web application covering frontend interfaces, backend logic, database-backed features, application state, debugging, and deployment. The project demonstrates my ability to work across an entire product rather than only isolated frontend components or API integrations. Focus areas include maintainable application architecture, responsive UI, server-side logic, database workflows, debugging, and production deployment.
1
124
1
Built a production-style SaaS platform for monitoring, debugging, and recovering API, webhook, automation, and AI workflows. Automation Control Center includes observable execution pipelines, validated webhooks, idempotency protection, retry policies, dead-letter recovery, AI classification, human approval and override, and detailed execution timelines. The public demo is fully interactive and works without login or paid external services. Built with Next.js, React, TypeScript, server-side APIs, Zod validation, workflow state management, automated testing, and production deployment on Vercel.
1
84
1
Built a SaaS billing and subscription platform with a focus on clean product UX, subscription management, billing visibility, and reliable payment workflows. Stack: React / Next.js, TypeScript, Stripe, APIs, database-backed application logic, and production deployment.
1
111
1
Built an automation and API workflow system focused on reliable integrations, webhook processing, retries, duplicate protection, and failure recovery. The project demonstrates how external services can be connected into dependable workflows with clear execution states, error handling, and production-ready automation logic. Stack: TypeScript, Node.js, APIs, webhooks, automation workflows, databases, and cloud deployment.
1
94
Internet of Things
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