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Slack Mass DM bot

I am looking for a chatbot expert who can create a Slack Mass DM bot that can send bulk message to all members of the group on slack.
If you have any experience in it, please let me know.

Telegram Bot

I am after someone to work on a bot for me that will be done via an API and Telegram. The user will need to join a certain group first before they are able to add the bot into their groups and utilize it. I need this completed ASAP! 

Stocks trading platform

I am in need for a webtrading script, example is
margin trading and being able to add different assets, oders should not be filled from own orderbook but executed based on api directly

Penny Auction Website Development

We are looking for a skilled and experienced developer to help us create a penny auction platform from scratch. The platform will include features such as regular penny auctions, sit 'n' bid, reverse auctions, reveal auctions, locked auctions, double win auctions, bid pack auctions, 100% off auctions, bid for free auctions and ticket auctions.
The developer should have experience in handling huge user loads and ensuring the platform is fully scalable and will not crash due to server bottlenecking. The script must be written in an open source language and the developer should have a plan to not allow SQL databases to become overcrowded.
Additional features that will be included in the platform are a buy it now option, a buy it now store, a ticker in the admin panel, a chat box, chat support, an autobidder, coupons and promotional offers, a built-in refund system, local payment solutions, a shopping cart, a wishlist, and integration with Facebook and Twitter.
The developer should also have experience in creating a user-friendly design that includes a logo insertion and complete control over template design, as well as the ability to upload video testimonials.
The admin panel will control all aspects of the site and will be fully customizable. The user account should allow users to see bids purchased, free bids, won auctions, auctions participated in, and view win limits.
Content Management System should include Terms & Conditions, About Us, Contact, Privacy, Jobs, Add Help Topic, Manage Help Topic, Add FAQ, Manage FAQ, Add News, Manage News, Add Testimonial, Remove Testimonial
Our budget is fixed and we cannot negotiate, so please only apply if you have relevant experience and can work within our budget.
In your application, please answer the question 1+1=?

Node.js developer (Middle/Senior)

Everyone who is passionate about innovations wants to make the world a better place. That is exactly what we are doing at Utorg. While developing innovative fintech products where traditional finance and blockchain technology meet, we are building a gate that opens multiple opportunities for both — users and businesses.
So far, our core products have already won users’ hearts in over 187 countries and have respect from the industry-leading companies, like NEAR Protocol, OKX, Wirex, Matters Labs, Velas, WhiteBIT, and others.
We are an international team of young and ambitious professionals united by a passion for innovations and belief in the decentralized world. And now, we are looking for an experienced Middle/Senior Node.js Developer who will strengthen our team and contribute to the success of our products and the bright future of Web3.
Required skills:
Excellent knowledge of Node.js;
Understanding of scaling and bottlenecks;
Excellent knowledge of TypeScript;
Experience in relational databases (knowledge of TypeORM);
Experience in Nest.js framework;
Ability to write unit-tests (Jest);
Knowledge of the principles of building a reliable architecture;
Ability to work in a team (propose and discuss ideas, argue your position, listen and understand teammates, negotiate);
Proficiency in English at the level of fluent reading of technical documentation.
Nice to have:
Experience in gRPC, PostgreSQL;
Experience in microservices;
Understanding how different blockchains work;
Knowledge of fintech specifics;
Experience in real projects.
We offer:
Interesting tasks to create a cool product;
Fully remote work;
Positive and productive work environment;
Collaborate with experienced developers;
Using the latest technologies and frameworks;
Ability to take a break from work (if necessary);
Interesting business trips, participation in conferences, and hackathons;
Professional growth.
Annual salary indexation;
Flexible working hours;
Payment of vacation and sick leave.
Our stack:
Java with SpringBoot;
Nodejs with Nest.js;
React and React.Native;

Software development

Needed a referral sofrware developer with more than 3 years expirience

Rating system / social network for auditors

We are looking full-stack (mostly front-end) developer for a rating system for informational security auditors.
This is a general web application with some kind of decentralization. It should look like with GitHub integration and focused on informational security auditors of smart contracts.
An information security audit is a deterministic procedure:
1. The client asks for the audit from the auditor and provides to the auditor the scope (list of files) and git commit hash.
2. The auditor makes the report with a list of issues. The client fix the issues and provide comments to the auditor
3. The auditor check fixes and comments and provide the final report to the client
Here is an example of an audit:
The system should be as much decentralized as it could be. Generally, payments for audits are processed in blockchain, so we will not manage payments. But we should provide a rating system based on payments (could be obtained from blockchain) and reviews of clients and auditors.
The first version could be the most simple as it could be: with only mapping between blockchain addresses and accounts, ratings, and links to the audits. Additional things like automatic scoping, lines of code counting, different metrics for auditors could be implemented later.
The developer should have a good product vision and implement simple and useful services. Experience with basic cryptography, blockchain (as a user), decentralization (IPFS, etc) could be preferable.
Our team is Russian-speaking (and worldwide located), so knowledge of the Russian language is preferable, but not necessary.

Front-end Developer

Position: Front-End Web Developer for full-time (contract-based) position (*hourly rate is given in budget)
Qualifications: - 3 years and above relevant experience
 - Has an eye for both functional and aesthetic interactive website design 
- User experience testing
 - Writing high-quality code
 - QA testing
 - Version control (Git) and Version testing
 - Cross-browser coding
 - Excellent problem-solving skills
 - Good attention to detail
 - Flexible approach to work
 - Good communication skills
For interested bidders: Please send us your CV/Resume and portfolio or attach the link of the required documents to your bid. Please be mindful of your bid as we consider your bid as an actual bid. Any change of bid during the job offer can lead to automatic revocation of the offer.