Budget: 25000 USD Deadline: 1 day
You can familiarize yourself with my technical experience from my full resume that I have posted on my profile. You can also check my experience from it and I am sure I will be a perfect fit for your team
About us:
We are Twenty Four 7. An agency that creates all kinds of good stuff – including things you never thought possible.
Our company provides technology services for a great number of clients around the world. We have a presence in Europe (Poland, Belarus, Moldova, Georgia, Turkey, Ukraine), and North and South America. Our HQ is in Portland.
We currently have over 500 employees worldwide. We come from different backgrounds but we love what we do. We build meaningful relationships with respect, equality, and integrity.
Our Company:
https://www.linkedin.com/company/tf7design
Job Description:
We are looking for the best of the best. People who love what they do and are legitimately excellent at it.
We also want people who understand that no one knows everything, don't have egos, understand their own shortcomings and are excited to grow.
We want people who are badass but also humble and care about helping their team. We want people who don't care about titles but care about results.
We are asking for a lot. What we can offer you?
The ability to work on a range of projects in different fields, industries, and stacks for companies ranging from early-stage startups to enterprise.
You will be working mostly with JavaScript and libraries/frameworks in its ecosystem.
Role:
Work Full-time.
Work with a 10x dev team.
Work in internal projects and client projects.
Build projects with a product focused mentality while keeping your code clean.
Build modern, efficient apps and test that they work correctly.
Constantly communicate with clients.
Review pull requests from other members of the team.
Have a founder mentality and proactively solve problems.
Wear any hats needed to get the job done.
Skills:
JavaScript / TypeScript
React / Angular / Nullstack
Node / Next.js / Apollo
EVMs / Solidity
Flow / Cadence
Solana / Metaplex / Rust
Truffle / Hardhata
web3.js / ethers.js
Flexible schedule
Salary 120K~225K in USD
Multi-company Equity
Budget: 25000 USD Deadline: 1 day
You can familiarize yourself with my technical experience from my full resume that I have posted on my profile. You can also check my experience from it and I am sure I will be a perfect fit for your team
Budget: 25000 USD Deadline: 1 day
Good evening, I am ready to quickly and efficiently complete the task. I suggest discussing the details in private messages.
Budget: 25000 USD Deadline: 1 day
Good night! My name is Benjamin.
I am a web developer.
Currently, I am actively looking for a permanent or project-based job.
Commercial experience: 3 years.
My stack: html, css, scss/sass, Flexbox, grid, JavaScript, wordpress.
Do you need a layout designer?
Budget: 25000 USD Deadline: 30 days
Dear Hiring Team at Twenty Four 7,
I am excited to apply for the developer position at Twenty Four 7. With several years of experience in JavaScript, TypeScript, React, Nodejs, and Next.js, I believe my skillset aligns well with your requirements. I am passionate about building clean, modern applications with a focus on product success, and I thrive in dynamic environments that push for continuous learning and innovation.
I’m particularly drawn to your company because of its global presence, diverse team, and the opportunity to work on a range of projects across different industries. I appreciate your emphasis on humility, collaboration, and problem-solving, which aligns perfectly with my work philosophy. I am eager to contribute to both internal projects and client-focused initiatives while always striving for excellence.
I would love the opportunity to join your development team and help build cutting-edge apps for your diverse range of clients. I look forward to the possibility of contributing to your vision and creating great things together.
Best regards,
Serhii Makarov
https://mcarrow.vercel.app/
Budget: 25000 USD Deadline: 1 day
Hello, my name is Daniil, and I am interested in your offer. I have experience working with JavaScript, TypeScript, React, Angular, Next.js, Solana, Rust, web3.js.
Budget: 25000 USD Deadline: 30 days
Hi Guilherme
I have experience with Node.js
Solidity web3.js ,ethers.js solana/web3.js
ready for details
Budget: 25000 USD Deadline: 1 day
Hello!
My name is Andrey, and I am a front-end developer with experience in the JavaScript ecosystem, including libraries and frameworks like React and Node.js. I have over a year of experience developing web applications using modern technologies and libraries, and I am skilled at writing clean, optimized code.
I’m impressed by your company culture and the fact that you seek people who are unafraid to acknowledge their weaknesses and eager to grow with the team. I fully share these principles and believe that the success of any team is built on mutual respect and a commitment to growth.
While I don’t yet have experience with technologies like Solidity and Rust, I am always eager to learn new tools and technologies to expand my skill set. I’m open to growth and would gladly take on any tasks requiring new skills and flexibility.
I would be happy to discuss how I can contribute to your team!
Best regards,
Andrey Volkov
Budget: 25000 USD Deadline: 1 day
Hello! I am the co-owner of the web studio for the development and design of websites of any complexity, Confidence Technology, as well as setting up advertising and SEO promotion.
I have extensive experience working with modern web programming technologies such as HTML, CSS, JavaScript (React.js or Vue.js), PHP, Laravel, CodeIgniter, Git, Python, MySQL, PostgreSQL, NodeJS, and various content management systems (CMS) such as WordPress (Woo), OpenCart, and PrestaShop, Webflow, Shopify. We are ready to take on projects of varying complexity and create unique and innovative web solutions for you.
We guarantee fast and quality task execution, as well as the possibility of integrating mapping APIs into your projects. We are always ready to take on your ideas and turn them into successful web solutions.
Our latest projects, including design:
https://novobudova.pro
https://youeasystart.com/
https://ico.freelance-fast.click
https://aquahub.org.ua
https://frolic.com.ua
https://mossandmoreart.com
https://boostylabs.com
https://ol.zp.ua
https://smt-industry.com
https://emporio-sports.cz
https://nosovski.com
https://alphasr.com
http://han.2doweb.org
https://riabchuk-anastasiya.com/
https://ukrfix.com/
Best wishes, Valentina
Budget: 25000 USD Deadline: 1 day
Hello,
My name is Vladislav and I have already choosen to complete your project.
So I mean I have already reviewed your project and codebase.
I'd like to discuss with you.
Thank you.
Developers, developers, developers! (c)
(check projects of this customer)
Hi Vasyl, thank you for your response.
Now our team consists of 20+ professionals (Middle+/Senior/Lead level), divided by 4 teams. We are a worldwide organization, we have people in Europe, LATAM, Ukraine, Israel, and the USA.
First, I'd like to know if you have any ongoing projects.
I didn't want to insult you. I never started projects as a customer here, but seeing multiple projects of the same type (my assumption) looks weird to me as a developer.
I do have one small ongoing project, but as a freelancer, I am always open to a new adventure(s).
Tech Stack - React: Responsive and dynamic front-end development - Node.js: Robust backend operations - Web3: Multi-chain cryptocurrency integration - Solidity: Smart contract development Project Objective Develop a comprehensive multi-chain staking platform for a popular gaming ecosystem, enabling seamless cryptocurrency interactions, NFT marketplace integration, and enhanced user experience across multiple EVM-compatible blockchain networks. Whitepaper We've been more than just a mobile gaming studio; we are visionaries and innovators in the gaming world. Our team is formed by mobile gaming industry talents and passionate gamers, and is dedicated to pushing the boundaries of what's possible in mobile gaming. Our expertise focuses on hybridizing genres to create something truly unique which we adapt for transitioning Web2 gaming to Web3 gaming titles. From Racing RPGs to Action Strategy games, we are constantly experimenting and blending genres to offer new gaming experiences. Our games aren't just a form of entertainment; they're immersive journeys that engage, challenge, and captivate our players. We embody our mission to not merely entertain but to transport our audience into an extraordinary universe of interactive world within Web3 gaming. - Front-End Development - Back-End Development - Landing Page Redesign - Multi-Chain Integration - NFT Marketplace - Testing & Quality Assurance - Deployment & Maintenance
What needs to be done: conduct an independent expert consultation on the implementation of multisig wallets to protect the company's treasury funds, which operates with high-volume payment processing in USDT across three networks - TRON (TRC20), BNB Smart Chain (BEP20), and Ethereum (ERC20). Requirements: (1) review available market solutions and recommend the optimal one for our profile - a single custodial platform for all three networks or a combination of separate tools for EVM and TRON; (2) propose a signature architecture (e.g., 2-of-3), key distribution among roles, thresholds for quick/large payments; (3) provide recommendations for key storage (hardware wallets, HSM) and procedures in case of key loss or compromise. For whom: the team administering the company's treasury with a high volume of crypto transactions. Success criterion: a ready recommended architecture with a clear implementation plan. Requirements: practical experience in implementing multisig, specifically with TRON (not just EVM), experience with specific solutions (Safe/Gnosis, Fireblocks, BitGo, Cobo, or native TRON multisig), preferably with cases of previous implementations.
Development of a Telegram Mini App (Bot + WebApp) for selling digital goods and in-game currencies (Python / aiogram) Project description: A Telegram bot with a full WebApp interface is required for the automated sale of digital goods (Telegram Stars, Telegram Premium, in-game currencies/donations for PUBG Mobile, Steam, etc.). The project is called Aspect App. The main focus is on speed, smooth UI/UX in a Web3/minimalist style, and complete automation of product delivery after payment. Technology stack: Backend: Python 3.10+, aiogram 3.x (FastAPI for Webhook/API is welcome). Database: PostgreSQL / Redis (for sessions and caching). Frontend (WebApp): React.js / Vue.js / Next.js (at the developer's discretion, speed and smoothness of animations are important). Integrations: Telegram WebApp API. Main functionality (MVP): 1. Client side (Telegram Mini App): Main screen: Product categories (Telegram Assets, In-game Donations). Banner grid for promotions. Product catalog: Product cards with volume selection (e.g., 50, 100, 500 Telegram Stars or UC). Fields for entering player data (Player ID for PUBG). Cart and Checkout: Quick purchase in 2 clicks. Payment module: Integration of payment methods (CryptoBot API / TON Connect / other fiat gateways by agreement). Personal account: Order history, status tracking, referral system (balance within the app). 2. Admin panel (built into WebApp or separate bot): Catalog management (adding/removing products, changing prices). Order monitoring and sales statistics. User database mailing system. 3. Automation logic (A plus): Readiness of the architecture for integration with supplier APIs (API for auto-purchasing Stars/UC). At the MVP stage, some products may be issued with codes from the database. What is required from the contractor: 1. Development of the database and backend architecture in Python. 2. Layout and integration of WebApp (design mockup to be discussed, clean Web3 style, Glassmorphism is important). 3. Setting up secure transactions and payment webhooks. 4. Deployment on the server (Docker, Ubuntu, SSL setup). Candidate requirements: Experience in commercial development of Telegram WebApps for at least 1 year. Portfolio with launched and working Mini Apps (please provide links in your response). Clean, documented code. Working conditions: Work only through the Secure Deal (Safe / Escrow) of the platform. Payment is staged (the project is divided into Sprint 1: Backend + DB, Sprint 2: Frontend WebApp, Sprint 3: Payment integration and testing). Budget: To be discussed with the successful candidate (please indicate your price range and timelines in your response)
Looking for a streamer, ideally with subscribers on Twitch; the more subscribers, the better. We need to promote the website so that as many people as possible learn about it.
We are looking for a specialist in Solana security programs to conduct an audit of the smart contract before deployment on the mainnet. Contract stack: Rust + Anchor framework SPL Token (transfer/storage of tokens in PDA) Mechanics: timing rounds, escrow of bets, resolver of final price, calculation and distribution of payouts, claim instructions, emergency pause + refund, fee configuration through admin authority Check for common vulnerabilities in Solana/Anchor: missing ownership/signer checks, account validation, integer overflow, PDA seeds collisions, reentrancy patterns, authority key privileges Analysis of payout distribution logic (rounding, edge cases with multiple participants) Verification of emergency mechanisms (pause, refund) — whether they can be bypassed or abused Report with classification of findings by criticality (Critical/High/Medium/Low) and recommendations Re-check after fixes (re-audit fixes) Requirements for the performer: Proven experience in auditing or developing Solana programs (Rust/Anchor) — please provide links to GitHub, previous audits, or examples of found vulnerabilities Understanding of SPL Token and PDA-escrow patterns Experience with static analysis tools (Soteria, Sec3, cargo-audit) will be a plus In your response, please indicate: Experience specifically with Solana (not EVM) — specific projects Estimated cost and timeline for a contract of this scope Report format (example, if available)