Freelancers in KyivFreelancers in Kyiv
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Nick Zaitsev's avatar
Nick Zaitsev
Kyiv, 02000
UI/UX designer and Art-Director with 10 years of experience
1x
Hired
5.0
Rating
50
Followers
UI/UX designer and Art-Director with 10 years of experience
Cover image for Ginga. Football Tracker App
Ginga. Football Tracker App
1
16
Cover image for BOLDR. Smart Home Mobile App
BOLDR. Smart Home Mobile App
2
13
Cover image for Totom. Concert Ticket Booking App
Totom. Concert Ticket Booking App
0
12
Cover image for Blank AI. Chat GPT-Powered AI Assistant
Blank AI. Chat GPT-Powered AI Assistant
0
12
Internet of Things(2)
Maks Podkolzin's avatar
Maks Podkolzin
proKyiv, 02000
Full-Stack SaaS, Automation & AI Developer
New to Contra
Full-Stack SaaS, Automation & AI Developer
Cover image for Built and developed a production-oriented
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
Cover image for Built a production-style SaaS platform
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
Cover image for Built a SaaS billing and
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
Cover image for Built an automation and API
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(1)