Hire the Best Web Services Specialists
in Ukraine

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Andrii M.

Cherkasy, Ukraine

$35/hr
5.0
2 jobs

I help startups and businesses build AI-powered SaaS platforms, marketplaces, and automation systems that reduce manual work and scale operations fast. I deliver production-ready web and mobile applications by combining 8+ years of hands-on development experience with modern AI tools like Claude and Cursor—shipping faster without compromising code quality, architecture, or UX. I also specialize in transforming outdated web apps into modern, AI-driven platforms with clean, maintainable architecture, so you're not locked into a developer for every small change. If you're looking for someone who understands both technology AND business outcomes, you're in the right place. 🚀 Core Expertise - AI-powered SaaS platforms & MVPs - AI Voice Agents (Twilio, PBX, ElevenLabs TTS, Deepgram STT, RAG pipelines) - Retrieval-Augmented Generation (RAG) & Vector Databases (Pinecone, Weaviate, pgvector) - Healthcare platforms — HIPAA, EHR, EMR, PHI, RHIR, Epic integrations - Legal tech platforms — iManage, DocuSign, matter management, intake workflows, document management - Sports industry platforms — live scoring, fantasy, scheduling, fan engagement - Marketplace development (buyer/seller/admin systems) - Business process automation - Scalable backend architecture - Custom dashboards & admin panels 🧠 How I Help You Whether you're launching an MVP or scaling an existing product, I can help you: ✅ Build your SaaS product from scratch ✅ Develop AI voice agents and conversational AI systems ✅ Implement RAG pipelines with vector database search ✅ Build HIPAA-compliant healthcare and EHR-integrated platforms ✅ Develop legal tech tools with matter management and document automation ✅ Automate repetitive workflows using AI ✅ Create seamless web & mobile applications ✅ Improve performance and reduce operational costs ⚙️ Tech Stack - Mobile Application Development: Flutter / Dart, React Native CLI / Expo, Redux — cross-platform iOS & Android. PWA (React.js). - Front-End Development: TypeScript, React.js, Next.js, Remix, Vite, Vue.js, Nuxt.js, Tailwind CSS - Back-End Development: Python (Django / Flask / FastAPI), Node.js (TypeScript), Express.js, NestJS, Fastify, Strapi - AI & Voice Stack: OpenAI, Claude (Anthropic), LangChain, LlamaIndex, Pinecone, Weaviate, pgvector, Twilio (Voice / SMS), ElevenLabs (TTS), Deepgram (STT), PBX / SIP integrations, RAG pipelines - Database: PostgreSQL, MongoDB, MySQL, SQLite, Amazon Redshift, MariaDB, DynamoDB - Tools & Infrastructure: GitHub, Bitbucket, Firebase, WebSocket, Redis, Nginx, AWS (EC2, S3, RDS, EBS), Docker My experience spans various domains, as outlined below: 1. HIPAA-compliant SaaS platform for hospital care and home care companies: web application and mobile application (iOS & Android) with PHI data handling, EHR/EMR integrations, RHIR-compliant data flows, and Epic API connectivity. 2. Matter management and client intake platform for law firms: web application integrating iManage for document management, DocuSign for e-signatures, and a custom intake workflow engine. 3. AI voice agent for customer support automation: built end-to-end with Twilio for telephony, Deepgram for real-time STT, ElevenLabs for natural TTS, and a RAG pipeline backed by a vector database for context-aware responses. 4. RAG-powered enterprise knowledge base: ingested internal documents into a Pinecone / Weaviate vector store and built a semantic search and Q&A interface using LangChain and OpenAI. 5. Sports league and tournament management platform: web and mobile application for scheduling fixtures, managing brackets, tracking live scores, and publishing standings in real time. 6. AI-powered SaaS platforms and MVPs: built using Claude AI, Cursor AI, Lovable, and Replit — rapidly shipping production-ready products with AI-augmented development workflows. 7. Asset management system: web application and mobile applications for iOS and Android. 8. Revenue management system: pulls data from QuickBooks, Mercury API, and Stripe API to calculate and report revenue. 9. Marketplace platform for car and bike parts / equipment: vendor-buyer concept with product listings, order management, and admin panel. 10. Retreat and hotel booking engine, ticket booking system with live seat selection, and courses booking system: web and mobile applications with scheduling and payment gateway integrations. 11. Food delivery and grocery delivery mobile applications: iOS and Android, built with Flutter and React Native. 12. Real estate website with MLS Grid integration, job board, classified listings, and dating platform: full-stack web and mobile applications across various consumer verticals. 🤝 Let's Work Together If you're looking for: - A reliable long-term developer - Someone who understands business, not just code - Fast execution with scalable, future-proof architecture 👉 Send a message or invite me to your job.

  • Web Application
  • Artificial Intelligence
  • Web Development
  • Mobile App Development
  • Full-Stack Development
  • React
  • React Native
  • Node.js
  • Python
  • JavaScript
  • AI App Development
  • FastAPI
  • AI Agent Development
  • Amazon Web Services
  • TypeScript
Vitalii S.

Lviv, Ukraine

$25/hr
5.0
3 jobs

⬜️ Built production-ready Python backend systems processing 100K+ records across multiple data sources ⬜️ Developed AI automation platforms using LLMs, RAG, APIs, and workflow orchestration ⬜️ Reduced manual business operations by up to 90% through automation and AI workflows ⬜️ Built scraping and AI automation systems used to process 1M+ of data points across multiple public sources. I work as a Python developer focused on backend systems, AI integrations, and data-driven applications. My work often overlaps with AI application development, data processing pipelines, and backend implementation of intelligent product features. What I specialize in Python Backend Development ✔️ FastAPI and Django/DRF scalable backend systems ✔️ REST APIs, authentication, permissions, async basics ✔️ PostgreSQL, Redis, caching, background jobs ✔️ Docker environments and clean architecture ✔️ Python developer for AI-first platforms and APIs I typically work as python developer and backend developer collaborating with web developer and full stack developer teams. AI Integrations & Intelligent Systems ✔️ LLM integrations for real product features ✔️ RAG pipelines with vector databases ✔️ AI-powered automation and workflow orchestration ✔️ Text analysis and AI workflow logic ✔️ Vision AI and image analysis integrations when needed This includes implementing AI-powered features, data processing pipelines, and production workflows supporting analytics and intelligent applications. API Integrations & Automation ✔️ Third-party API integrations ✔️ Stripe, email systems, notifications ✔️ External services and automation pipelines ✔️ Background workers and queue processing I often build systems combining python developer backend logic with web scraping, automation, and data processing. Product Focused Backend ✔️ Backend built around real user flows ✔️ Clean architecture and maintainable code ✔️ Scalable data models and APIs ✔️ Reliable AI-powered features I work closely with full stack developer and web developer teams to ship production-ready features. Web Scraping & Data Extraction ✔️ Large-scale web scraping pipelines ✔️ Browser automation with Playwright ✔️ Structured data extraction from websites and APIs ✔️ Data enrichment ✔️ Google Sheets and database automation Recent project types – AI platform with LLM APIs and RAG pipelines – Automation systems powered by AI workflows – Analytics backend with data processing pipelines – SaaS platform with authentication and payments – Content automation replacing manual content writer workflows – Marketing integrations (facebook ads data ingestion, smartsender automation) Tech Stack ✔️ Python, FastAPI, Django, DRF ✔️ REST APIs, async basics ✔️ PostgreSQL, Redis ✔️ Docker, Git ✔️ LLM APIs, RAG, vector databases ✔️ Web scraping, automation ✔️ External APIs and integrations I focus on backend engineering, AI integrations, RAG systems, automation, and data-driven applications, AI bot developer and API development tasks. I don’t take projects based on php developer stacks, data analyst and salesforce administrator tasks, algorithm, WordPress, Laravel, java, react, data entry, lead generation, data mining or frontend-only web developer tasks. Have an AI project, automation idea, or backend system to build? Send a short description, and I’ll suggest the best approach.

  • Python
  • Machine Learning
  • Artificial Intelligence
  • AI Agent Development
  • Data Scraping
  • API
  • Automation
  • Data Mining
  • JavaScript
  • API Integration
  • n8n
  • Amazon Web Services
  • Data Extraction
  • Web Crawling
  • Microsoft Excel
  • OpenAI API
  • Selenium
  • Claude
  • Data Analysis
  • Data Science
Nazar F.

Kamianets-Podilskyi, Ukraine

$45/hr
5.0
4 jobs

I build and scale Rails-backed SaaS products, from early MVP to multi-tenant platforms handling real production load. And with over 5 years experience in AI/ML, and prediction/trading field, I developed several prediction models for sports betting and stock trading. Most of my clients come to me with one of three problems: they need a clean API and product built from scratch, their existing Rails app has gotten slow and messy, or they are scaling up and the current architecture will not hold. I have handled all three. 🚀What I have shipped: ▪ Multi-tenant SaaS platforms with Rails API and React frontends (role-based access, subdomain isolation, per-tenant data scoping) ▪ Stripe billing integrations including subscription plans, usage-based billing, metered billing, webhook handling, and dunning flows ▪ API performance turnarounds: cut p95 response times from 900ms to under 150ms through query optimization, N+1 elimination, and Redis caching ▪ PostgreSQL schema design and query optimization for datasets at scale (100k to 10M+ rows) ▪ Background job systems with Sidekiq including scheduled jobs, retries, priority queues, and dead-letter handling ▪ OAuth2 and JWT auth systems, including third-party SSO integrations ▪ Internal tooling and admin dashboards used daily by ops and support teams 🛠️Tech I work with daily: ▪ AI/ML: Python, PyTorch, TensorFlow, scikit-learn, XGBoost, LIghtGBM, Pandas, NumPy, OpenCV ▪ Backend: Ruby on Rails, PostgreSQL, Redis, Sidekiq, RSpec ▪ Frontend: React, Next.js, TypeScript, Tailwind CSS ▪ APIs: REST, GraphQL ▪ Infra: AWS (EC2, RDS, S3, SQS), Docker, GitHub Actions CI/CD ▪ Rust available for performance-critical services when Rails is not the right tool 🤝How I work: I give you a clear plan before writing a line of code. I ask questions upfront so there are no surprises mid-project. You will get clean, documented, production-ready code and not a prototype you have to rewrite in six months. If you are building a SaaS product, scaling an existing one, or need a Rails specialist who understands the full stack, send me a message. I will take a look at what you are building and tell you exactly how I would approach it.

  • Artificial Intelligence
  • Machine Learning
  • Python
  • TensorFlow
  • PyTorch
  • pandas
  • PostgreSQL
  • React
  • Next.js
  • TypeScript
  • Stripe API
  • Redis
  • GraphQL
  • REST API
  • SaaS
  • Amazon Web Services
  • Docker
  • Tailwind CSS
  • API Development
Maxim S.

Kryvyi Rih, Ukraine

$10/hr
5.0
20 jobs

PHP / WordPress / Laravel developer with 15 years in production — building new websites and carefully taking over live codebases. Custom plugins and themes, WooCommerce, Elementor builds, and Laravel backends. What I do best: - WordPress themes, plugins, Elementor / Elementor Pro builds (custom widgets based on official widgets, templates, responsive fixes) - WooCommerce: store fixes, custom features, and ongoing maintenance - PHP / Laravel backend: REST APIs, MySQL, background jobs, third-party integrations - Full-stack web apps with JavaScript, HTML/CSS when a project needs both sides - Careful work in live codebases: bug fixes, performance, migrations, and updates that don’t break existing functionality How I work: - Clear written communication on Upwork, regular updates, honest estimates - Clean, maintainable code without unnecessary complexity - Long-term mindset: my longest client relationship is 7+ years Working style: I work entirely in writing (Upwork messages and written docs). My English is reading and writing only — I don’t take voice or video calls. That keeps communication clear and documented, and lets me offer a competitive rate for senior-level WordPress/PHP work. If your workflow depends on regular calls, I’m probably not the right fit — and that’s fine. Best fit: WordPress / Elementor updates and builds, custom plugin / theme work, WooCommerce tasks, Laravel / PHP development, ongoing maintenance and support. If your project matches any of the above, send me a message — I’ll reply with a short plan and an honest estimate. About AI tools: I occasionally use AI as an assistant for drafts and routine suggestions. All code is manually reviewed, adapted to the project, and carefully tested before delivery. I remain fully responsible for the final result.

  • WordPress
  • PHP
  • JavaScript
  • MySQL
  • Laravel
  • jQuery
  • Vue.js
  • MongoDB
  • Full-Stack Development
  • HTML
  • CSS
  • Twitter/X Bootstrap
  • Elementor
Andrii M.

Lviv, Ukraine

$40/hr
5.0
6 jobs

👋 I am new to Upwork, but not new to the work. I have 8+ years of real production experience, and I take every project seriously. I build data systems, AI pipelines, and automation workflows that work reliably at scale.😎 I am a Senior Data Engineer and AI Integration Specialist with 8+ years of experience. I do not just move data from one place to another. I design systems that turn complex and messy data into clean, useful information and build automation that saves teams hours of manual work every week. 🧠 Tech stack: Python, SQL, PySpark, AWS, Snowflake, BigQuery, Databricks, PostgreSQL, Airflow, dbt, Docker, FastAPI, n8n, Claude API, OpenAI, LangChain, Playwright, Supabase, Airtable, Salesforce, GoHighLevel 💡 What I bring: • Pipelines that process 100M+ records every month • Up to 70–80% reduction in manual reporting • AI and LLM integrations that automate real business workflows • Web scraping systems that collect and enrich data at scale • Strong focus on data quality, testing, and stability • Solutions that are easy to support and scale ⚙️ What I do: • Build data pipelines from APIs, databases, and files • Design data models and warehouse architectures • Work with cloud platforms: AWS, BigQuery, Snowflake, Databricks • Set up orchestration with Airflow, Prefect, and dbt • Build AI agents and RAG systems using Claude and OpenAI APIs • Automate workflows with n8n, Make, and custom Python scripts • Build web scrapers with Playwright, Scrapy, and BeautifulSoup • Integrate CRMs: Salesforce, HubSpot, Airtable, GoHighLevel • Create dashboards in Power BI, Tableau, Looker, Metabase, and Retool Experience: ▶️ eCommerce: 100+ data sources, product datasets, marketplace integrations ▶️ FinTech: data pipelines, financial reporting, regulated environments ▶️ Healthcare: data cleaning and structuring for analysis and reporting ▶️ Real Estate and PropTech: pricing models, permit data pipelines ▶️ Government: automated document and data processing ▶️ Migrations: legacy SQL and Excel to modern cloud platforms 🚀 If you need reliable data infrastructure, AI automation, or clean analytics, I can help.

  • ETL
  • Python
  • SQL
  • Snowflake
  • AWS Glue
  • Amazon S3
  • Amazon Web Services
  • Amazon DynamoDB
  • Data Engineering
  • Database Design
  • CI/CD
  • Microsoft SQL Server
  • PostgreSQL
  • PySpark
  • dbt
  • Data Warehousing
  • Data Lake
  • Data Vault
  • Microsoft Azure
  • n8n
Maksym P.

Kovel, Ukraine

$39/hr
5.0
3 jobs

If you're looking for a developer who can actually deliver high-quality, scalable products - not just write code - you're in the right place. I’m a Senior Full-Stack Developer specializing in React, Next.js, Node.js, and AI-powered applications. I help startups and businesses build fast, modern, and revenue-driven products with clean architecture and real-world performance in mind. What sets me apart: - I don’t just code - I solve business problems - I build products that scale, not quick fixes - I communicate clearly and deliver on time - I take ownership of projects from idea to production My expertise includes: - Full-stack development (React, Next.js, Node.js, Express) - AI integrations using OpenAI API & LangChain - Building SaaS platforms, dashboards, and custom tools - Automation systems (Google Sheets, APIs, workflows) - Database design (PostgreSQL, SQL) - Clean UI development with Tailwind CSS - JavaScript & TypeScript across the stack I’ve built AI-powered tools, automated workflows that save hours of manual work, and full-scale web applications used by real users. *My focus is always on performance, scalability, and user experience.* If you need someone who can think like a developer and act like a product partner, I am ready to help. Let's build something that actually works - and lasts.

  • SaaS Development
  • AI App Development
  • AI Implementation
  • AI Platform
  • Web Development
  • Claude
  • API Integration
  • OpenAI API
  • Laravel
  • React
  • Next.js
  • Vue.js
  • Nuxt.js
  • MySQL
  • PostgreSQL
  • Supabase
  • JavaScript
  • PHP
  • Python
  • Amazon Web Services

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Web Services Specialist in Ukraine on Upwork?

You can hire a Web Services Specialist in Ukraine on Upwork in four simple steps:

  • Create a job post tailored to your Web Services Specialist project scope. We'll walk you through the process step by step.
  • Browse top Web Services Specialist talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Web Services Specialist profiles and interview.
  • Hire the right Web Services Specialist for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Web Services Specialist?

Rates charged by Web Services Specialists on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Web Services Specialist in Ukraine on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Web Services Specialists and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Web Services Specialist team you need to succeed.

Can I hire a Web Services Specialist in Ukraine within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Web Services Specialist proposals within 24 hours of posting a job description.