You will get a custom MCP server wired into Claude Code for your team

4.1

Let a pro handle the details

Buy Generative AI services from Andrei, priced and ready to go.
4.1

Let a pro handle the details

Buy Generative AI services from Andrei, priced and ready to go.

Project details

I build a custom MCP server that connects your team's tools — API, database, internal service — to AI agents like Claude Code. Your team operates your stack via AI instead of tab-switching and copy-pasting prompts.

What you get
• Production-ready MCP server in TypeScript (you own the code)
• Auth, error handling, basic tests, clear docs
• 1-hour handoff call to install + train your team

Who this is for
• Engineering teams using Claude Code or other MCP clients
• Founders/CTOs who want internal tools accessible to AI without building the integration in-house

What I bring
17 years of software engineering. Built 16+ MCP servers + 12 Claude commands at a US fintech. Built a forked Chromium with 11 native C++ SDKs in my own product.

I don't ship prototypes. I ship production servers with auth, error handling, tests, and docs your engineers can read.

NOT included
• Hosting/deployment (you deploy to your infra)
• Long-term maintenance (separate engagement)
• Tool/API discovery beyond what you bring

How to start
Order the project. I'll ask for the tool, technical context, and who'll use it. Quick call locks the spec, then I build.
AI Algorithms
Large Language Model
AI Applications
AI Chatbot, AI Mobile App Development, AI-Generated Code, AIOps, Conversational AI, Natural Language Understanding, Text Recognition
AI Development Language
Python
AI Models
ChatGPT
What's included
Service Tiers Starter
$500
Standard
$1,000
Advanced
$2,000
Delivery Time 5 days 7 days 10 days
Number of Revisions
135
AI Model Integration
Batch Normalization
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Database Integration
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Detailed Code Comments
Image Upscaling
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MLOps
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Model Deployment
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Model Documentation
Model Monitoring
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Model Testing & Optimization
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Model Tuning
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Natural Language Processing
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NLP Tokenization
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Pre-Training
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Prompt Engineering
Setup File
Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$100 - $300
Additional Revision
+$75
Extra MCP server (+ 3 Days)
+$400

Frequently asked questions

4.1
19 reviews
68% Complete
11% Complete
5% Complete
5% Complete
11% Complete

SP

Steven P.
5.00
Apr 15, 2026
Small Data Extraction Project

EL

Eric L.
5.00
Aug 30, 2024
RPA Robotic Processing Automation Expert for Amazon Product Arbitrage

ar

alistair r.
2.00
Dec 18, 2023
Proof of Concept - for Ninja Mochi I dont know, we had lots of miss-communication, and I don't know who is at fault, me or the developer and his team, From my side - they added team members who had not been briefed, changed and removed team members, and didn't follow the instructions - when New team members were added to the project, and then not briefed - The only way I could get updates was by chasing the team for information - and that didn't work - and then -new people were added to the project who wanted to change the agreement - I had to chase down for results status updates, and it was clear that we had not understood each other and were talking about completely different projects. - I asked them many times to negotiate an ending - and their response was they felt they had provided their service - I was unable to use a single record they provided and there was no discernable methodology that would have helped me

JR

Jon R.
3.00
Nov 30, 2023
Scrape FB buy and sell groups this is a flawed system. We never worked together. Sorry to the freelancer and I hope upwork can simply discard this contract as it never started. 0 hours.

CS

Cass S.
5.00
May 1, 2022
**One Time Mass Scale Web Scraping Project for Sports Card Images** Amazing freelancer. Great communication and performance. Thanks for all you do.
Andrei S.Status: Offline

About Andrei

Andrei S.Status: Offline
AI & Software Engineer | MCP, Agents | TypeScript, Python, Swift, Go
4.1  (19 reviews)
Chisinau, Moldova - 12:17 am local time
Senior AI & Software Engineer
17 years building production systems end-to-end — from first commit to scale

What I do best —
I take complex systems from idea to production: AI agents that run end-to-end workflows, browser-native automations that survive at scale, full-stack SaaS that handles real load, and native apps that ship clean. I'm hands-on across the entire stack — frontend, backend, infra, data, mobile, and increasingly the deep stuff: forked browsers, on-device AI, post-quantum cryptography.

I work fast, scope tight, ship clean. No hand-holding required.

Where I'm strongest —
AI Engineering: Claude Code, MCP Servers, Skills, Commands, AI Agents, Anthropic API, OpenAI API, Prompt Engineering, n8n, Workflow Automation, Multi-tool Pipelines

Full-Stack Engineering: TypeScript, Node.js, Python, Go — React, Next.js, Tailwind CSS — REST APIs, GraphQL, WebSocket, Microservices — PostgreSQL, Citus, Redis, MongoDB, NoSQL, SQL — Custom Queues, Message Queues, RabbitMQ — Cypress, A/B Testing, SSR/ISR, Core Web Vitals, Performance Tuning

Cloud & DevOps: Kubernetes, Cloudflare Workers / D1 / R2, Terraform, Helm Charts, Prometheus, Docker, GitLab CI, CI/CD, DigitalOcean, OVH, Linux

Browser-Native & Automation: Chromium (native C++ SDKs), Browser Automation, Headless Browsers, Anti-Bot Detection, Web Scraping, Fingerprinting, Proxy Networks, Scrapy, Selenium, Puppeteer

Mobile & Desktop: Swift, iOS, Kotlin, Android, React Native, Electron.js, Desktop Application Development, macOS

Edge & On-Device AI: Edge Computing, llama.cpp, On-Device LLMs, Edge Inference

Cryptography & Distributed Systems: Ed25519, X25519, Post-Quantum Cryptography, X3DH, PQXDH, Double Ratchet, Megolm, P2P Networking, Distributed Systems, Kademlia DHT, WebRTC, QUIC

How I work —
I architect first, then ship. I write specs when scope is unclear. I bring receipts: dashboards, metrics, working demos, not promises. I communicate async, deliver under tight deadlines, and don't disappear mid-project.

Senior contracts only —
Agents, MCP servers, SaaS platforms, native iOS, browser-native automation, distributed systems, edge AI.

Remote-first. CET timezone. English, Romanian, Russian: fluent in all three.

Available now. Send scope, timeline, and engagement type and I'll respond with a clear plan.

Steps for completing your project

After purchasing the project, send requirements so Andrei can start the project.

Delivery time starts when Andrei receives requirements from you.

Andrei works on your project following the steps below.

Revisions may occur after the delivery date.

Discovery + spec lock

30-minute call to confirm scope, tool, auth, deployment target. I write a 1-page spec and send it for your approval before writing any code.

Build + tests

I build the MCP server in TypeScript with the Anthropic MCP SDK. Auth, error handling, basic test coverage, clear inline docs. Daily progress updates if the engagement spans multiple days.

Review the work, release payment, and leave feedback to Andrei.