MongoDB developers

113

Anatoliy

Bot Development · Web Programming

122 0

5.0

27 781

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Trusted Full Stack Developer I’m an experienced Full Stack Developer specializing in modern web applications, Telegram and WhatsApp bots, mobile apps (Android/iOS), automation scripts, and browser extensions. I handle the entire development cycle — from idea and architecture to launch and support. I work clearly, transparently, and result-oriented. Technologies I use daily: Frontend: React, Next.js, Vue.js, Nuxt.js HTML5, CSS3, SASS, Tailwind CSS, Bootstrap 5 JavaScript (ES6+), TypeScript Zustand, Redux Toolkit, Context API Framer Motion, React Hook Form, React Query, Axios, SWR Webpack, Vite…

SANCHO — Telegram Mini App built with React + TypeScript

750 USD

0 1

SANCHO — Telegram Mini App built with React + TypeScript

Bot Development

SANCHO is a Telegram Mini App frontend: product and plan catalog, crypto payment, user account and FAQ. The app opens inside Telegram and uses its theme and WebApp SDK. What was built: — React 18 + TypeScript (strict) on Vite — Telegram WebApp…

Telegram bot for construction control — AI, geo, media

2000 USD

0 0

Telegram bot for construction control — AI, geo, media

Bot Development

An AI assistant in Telegram for managing technical supervision on construction sites. The bot runs scheduled morning and evening reports, walks users through checklists with verified geolocation, archives photos, videos and documents to an external…

Polymarket Bot — copytrading & arbitrage (on-chain)

1500 USD

0 0

Polymarket Bot — copytrading & arbitrage (on-chain)

Bot Development

A high-performance bot for Polymarket sports markets: it copies trades of target accounts, finds arbitrage against sportsbook lines, and trades on a multi-signal strategy. Trades execute on-chain on Polygon. What was built: — Three modes: Smart…

$Bybit fractal & FVG scanner bot — Telegram signals (Python)$

450 USD

0 0

Bybit fractal & FVG scanner bot — Telegram signals (Python)

Bot Development

An automated bot for the Bybit exchange that finds trade setups based on fractal and Fair Value Gap (FVG) patterns and sends signals to Telegram. The bot scans all USDT perpetuals, finds three-candle down fractals on a higher timeframe, monitors…

CS2 skin trading bots suite — cross-market arbitrage automation

1500 USD

0 0

CS2 skin trading bots suite — cross-market arbitrage automation

Bot Development

A set of automations for arbitrage trading of CS2 items: buy cheaper on some marketplaces and sell higher on others. A single TypeScript monorepo with browser extensions, a desktop seller and service bots. What was built: — Browser extensions (…

Mykyta

Python · Databases & SQL

32 0

5.0

9 772

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AI-powered Restaurant Management Platform — WhatsApp Business AP

671 USD

0 217

AI-powered Restaurant Management Platform — WhatsApp Business AP

Bot Development

Development and migration of WhatsApp infrastructure for an AI-based restaurant management SaaS platform. The system automates financial reporting, invoice processing, and communication with restaurant owners via WhatsApp. What has been done:…

Development of Telegram and WhatsApp bots

224 USD

0 276

Development of Telegram and WhatsApp bots

Bot Development

Development of Telegram and WhatsApp bots for automating business processes, accepting applications, customer support, and integration with AI services, CRM, APIs, and databases.

Nikita

Bot Development · Python

73 0

5.0

13 099

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Roman

Bot Development · Javascript and Typescript

202 1

5.0

12 640

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101 USD

2 3 925

Telegram bot for private school

Bot Development

Boat to remind of classes and pay lessons for students. The information is collected from Google tables, separately for each city and groups in them. There is an opportunity to move the class and contact the administrator.

The telegram bot for picking the lamp for the car

78 USD

2 3 266

The telegram bot for picking the lamp for the car

Bot Development

The bot selects lights/colls for lightweight, truck and motorcycles from a large base in Excel format. The base can be changed through the admin. Models are accepted in both English and Ukrainian languages, even if there are errors in the name.

Telegram bots for Google tables monitoring

45 USD

0 1 835

Telegram bots for Google tables monitoring

Bot Development

The bot follows the Google table and communicates in the telegram to the group in case of new records.

45 USD

0 1 156

Telegram Boot for HR

Bot Development

The bot collects the candidate’s survey data and sends them to the electronic mail.

27 USD

0 715

Telegram bot for ordering

Bot Development

The bot pars the orders data from the Google tables and allows employees to collect them by folders.

Denis R.

Python · Bot Development

32 0

5.0

5 126

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269 USD

0 331

MentorAI

Bot Development

Intelligent learning assistant with an adaptive system that adjusts to your knowledge level. Get personalized questions, AI explanations of complex topics, and track your progress with achievements and statistics. Perfect for learning programming,…

213 USD

1 356

AI CRM

Bot Development

AI CRM Bot is a Telegram bot for small business management. It stores clients, orders, and tasks, automatically sends deadline reminders, generates emails via GPT AI, and exports data to Google Sheets. Beautiful animated interface with emojis and…

0 382

Pocket bot

Bot Development

The bot provides compact and clear market summaries for selected currency pairs — current prices, support/resistance levels, a technical snapshot, and a market overview — so you can quickly get the information you need to make trading decisions.

0 281

Telegram Media Converter Bot

Bot Development

Telegram bot that converts MP4 into video messages and MP3 into voice messages.

0 217

Telegram Auth Bot

Bot Development

This project is a Telegram bot for automating the acquisition of real phone numbers and email addresses via third-party APIs, and for handling authorization using received codes.

Oleksandr Stinkovyi

Bot Development · Javascript and Typescript

117 0

5.0

7 406

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Telegram bot for visa center (SendPulse)

101 USD

0 266

Telegram bot for visa center (SendPulse)

Bot Development

Bot for collecting responses. There is integration with Google Sheets and OpenAI.

224 USD

0 565

Telegram bot for selling teas

Bot Development

Bot for selling goods with KeyCRM integration. Implemented product catalog and shopping cart for order placement. Stack: NodeJS (Telegraf) + MongoDB

190 USD

1 559

Telegram bot for barbershop

Bot Development

The bot allows adding sales and viewing sales statistics. Stack: NodeJS (Telegraf) + MongoDB

Telegram bots for video generation using D-ID

100 USD

0 1 316

Telegram bots for video generation using D-ID

Bot Development

The bot generates from an image and an audio file – a video in which the faces of people are animated (as if they say it). The API of the D-ID service is used to work. Filed to:NodeJS

500 USD

2 1 483

Telegram BOT + Web Admin

Bot Development

The Stack: NodeJS (Express, React and Telegraph) The MongoDB

Nazar

Python · Bot Development

56 0

5.0

3 801

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Dmytro Myrhorodskyi

Python · Bot Development

13 0

5.0

3 247

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About MeA multidisciplinary engineer with a rare skill set in deep system analysis, protocol reconstruction, and high-performance backend development. I’m comfortable working in environments where:no documentation exists,code is minified, obfuscated, or closed,APIs are hidden, unstable, or partially removed,system architecture is unknown,and the task is considered “impossible.”My background was shaped in Web3, crypto exchanges, automated trading systems, and complex web platforms — where the goal is not just to write code, but to understand how the system works at a deeper level than its…

Nick Osipov

Python · Bot Development

41 4

4.6

2 702

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Title: Senior Full-Stack Python Developer & Tech Lead | Web4Business Founder About Me: Looking for a senior developer who understands business goals, delivers on time, and won't disappear halfway through the project? I am a Full-Stack Python Expert and the founder of Web4Business I specialize in building scalable web applications, complex automation (parsing/scraping), Telegram bots, and Web3/Crypto integrations. How I work: I am not just a coder; I am your technical partner. I personally design the architecture, write the core logic, and manage the entire lifecycle of your project. To ensure…

336 USD

0 772

Bot with Webinterface for Claym Coins

Bot Development

Language: Python The Libraries: The Selenium by Gui (PyQt5) The program has a flexible interface that allows you to set the coins clay (HOT) in multi-precision with the right delay on the unlimited token call (Without proxy)

Nazar

Bot Development · Python

71 0

2 281

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Long-term cooperation — quality and deadlines are the priority I build complex web products end-to-end with 7+ years of experience. I specialize in CRM systems and Telegram bots. I design architecture from scratch and maintain live products with real users. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FRONTEND ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Core ▪ React 19, TypeScript, Vite ▪ Material UI v7, Tailwind CSS v4 ▪ Material React Table v3 State & Forms ▪ Zustand, React Hook Form, Yup Real-time & API ▪ Socket.IO Client, Axios ▪ lightweight-charts (trading charts) UX & i18n ▪ i18next / react-i18next (multilingual…

500 USD

0 657

Team Lead for telegram game

Bot Development

Project stack: React.js, TypeScript, NodeJS, MongoDB Some examples of my completed tasks Dividing the backend and frontend into a dev version and a prod version Configuring autodeployment over the dev version ((front + autocompilation) + back)…

224 USD

0 435

Welcome bot builder

Bot Development

This bot can [+]Accept users [+]Plan mailings to users months in advance [+]Make forced mailings [+]Give up-to-date statistics on users (you can see it on the screenshot) The bot supports multilingualism and multibotting, that is, there is no…

Bot to create referral links for telegram channels

45 USD

0 406

Bot to create referral links for telegram channels

Bot Development

The task: Create a bot that will create individual links for the telegram channel, with enabled login requests Maintaining statistics on current participants and applications on all added chats. Statistics on each channel of each referral link…

Boot for sale of photo and video materials

101 USD

1 1 068

Boot for sale of photo and video materials

Bot Development

A bot is created to sell photo and video materials for arbitraries and content makers. Introduced cryptocurrency payment system for subscription payments Subscriptions in the form of photo/video limit Photo storage and keyboard removal are done…

101 USD

0 850

Boat for the Prognosis Competition

Bot Development

A bot and a parser were created for the competition for different matches. In this bot for the competition was created a league filter mechanism, the bot supports translation through the json file into different languages. Matches are…

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