Programming & Coding Projects

opportunity

Build "SmartAjo": A Secure Fintech Web App for Thrift Savings

I am a Legal Practitioner looking for an experienced Full-Stack Developer (or Team) to build SmartAjo—a digital platform that modernizes the traditional Nigerian "Ajo/Esusu" thrift system. ​We have the Full Technical Specifications, Database Schema, and Business Logic ready. We need a developer to execute this blueprint into a secure, responsive Web Application (PWA). ​Core Project Logic (The "Tri-Wallet" System): ​The application relies on a specific logic where every user has three distinct balances: ​Locked Savings Wallet: For daily contributions. Funds are frozen until cycle maturity (e.g., 31 days). ​Matured Wallet: Funds move here automatically upon maturity (minus a 1-day Admin Commission). These funds are liquid for withdrawal. ​Utility/Credit Wallet: Used for instant Bill Payments and Loan disbursements. ​Key Features to Build: ​1. Customer Portal: ​Registration/KYC: Phone OTP verification + Bank Account linking. ​Savings Plans: Users subscribe to daily plans (e.g., ₦1k/day). ​Bill Payments: Integration with VTPass API to pay Electricity/Airtime using "Matured" funds. ​Education Shield Module: A specific logic where saving 70% of a target triggers an automatic 30% loan top-up. ​2. Field Agent Portal (Mobile Optimized): ​Cash Logging: A simplified interface for Agents to search for a user and log cash received. ​SMS Triggers: System must send instant SMS alerts to customers upon cash entry. ​Daily Reconciliation: A report showing "Total Cash Logged" vs "Cash Remitted." ​3. Super Admin Dashboard: ​Global Liquidity View: Total Locked vs. Total Matured funds. ​Approvals: Manual approval button for Withdrawal Requests. ​User Management: Ability to ban users or agents. ​Loan Engine: Algorithm to calculate loan eligibility based on savings consistency. ​Required Integrations: ​Payment Gateway: Paystack or Flutterwave (for card funding). ​Bill Payment API: VTPass or Reloadly (for Airtime/Power). ​SMS Gateway: Termii or SmartSMSSolutions. ​Tech Stack Preference: ​Backend: PHP (Laravel) OR Node.js. ​Frontend: React, Vue.js, or Clean Blade Templates (Must be Mobile Responsive). ​Database: MySQL. ​Security: SSL, CSRF Protection, and Bcrypt for passwords are non-negotiable. ​Deliverables: ​Full Source Code (uploaded to GitHub/Bitbucket). ​Database SQL File. ​Deployed & Tested Application on my Server. ​30 Days of Post-Launch Bug Support. ​Budget & Timeline: ​Budget: $500 - $650]. ​Timeline: 4 - 6 Weeks.

Application Support – Healthcare & Research Systems

We are looking for a Freelance Application Support Engineer (4–5 years experience) to support a medical research institute, providing technical analysis, server support, and application troubleshooting across research and healthcare systems. Time Commitment ⏱ 2–2.5 hours per day | Monday–Friday (No weekends) Key Responsibilities Support 20+ vendor-hosted and in-house clinical/research applications Troubleshoot Azure cloud & on-prem servers (Windows/Linux) Develop and support SQL/MySQL reports Handle user tickets via email, Teams, and phone Coordinate with vendors for upgrades and issue resolution Manage user access, SSL renewals, and security protocols Support applications like REDCap, OnCore, Streamlyne, DocuSign Collaborate with IT, researchers, and clinical stakeholders Must-Have Skills 4–5 years of application/technical support experience Strong SQL & MySQL skills Windows & Linux server administration Report writing and data analysis experience Familiarity with REDCap Healthcare or health-adjacent domain experience Strong communication and customer-facing skills Nice to Have Databricks, Azure/AWS/Snowflake Analytics tools: SAS, SPSS, R, Python Experience with OnCore, Streamlyne, Oracle Health (Cerner) Engagement Type

Senior Embedded System, Programming Engineer

Hope you are doing well. I have seen your profile and I think you have deep experience in Embedded system. Let me know when you are available to work.

opportunity

Tech Partner Needed for High-Impact E-Commerce dApp Integration

I’m currently working on a new e-commerce-driven product, designed to integrate with decentralized technologies, with strong potential for long-term scalability and real market impact. At this stage, I’m looking for a committed and reliable collaborator—someone technically skilled and genuinely interested in building something meaningful from the ground up in the blockchain and decentralized space. While I have a development background, I’m now focused on product direction and operations. I need a partner who can handle the technical side of things, especially with blockchain integration. Immediate tasks include: Debugging production issues that occur under real user load Addressing edge cases in the checkout and order flow, particularly as they integrate with decentralized components Improving performance and reliability rather than building new features Refactoring parts of the codebase to optimize decentralized transactions and smart contract interactions If you're excited about combining e-commerce with blockchain, and have experience working with decentralized applications (dApps), let's connect!

Blockchain Full stack developer

## Tech Stack - **Blockchain**: Solidity, Polygon (MATIC), Ethereum - **Development**: Thirdweb SDK, OpenZeppelin contracts - **Tools**: Hardhat/Truffle, Remix IDE, MetaMask - **Testing**: Chai, Mocha, Waffle - **Deployment**: Thirdweb Deploy, Polygon Mumbai/Mainnet ## Key Responsibilities - Develop and audit Solidity smart contracts for lottery mechanics - Implement secure random number generation for winner selection - Build gas-optimized functions for ticket purchasing and prize distribution - Create admin functions for lottery operators (draw, refund, commission withdrawal) - Integrate OpenZeppelin security standards and access controls - Deploy and verify contracts on Polygon network - Collaborate with frontend team on Web3 integration ## Smart Contract Features You'll Build - **Ticket Management**: Purchase validation, quantity limits, price calculations - **Random Winner Selection**: Secure randomness using block hash and timestamp - **Prize Distribution**: Automated winnings calculation and withdrawal system - **Commission System**: Operator fee collection and withdrawal mechanisms - **Refund Logic**: Automatic refunds for expired draws - **Access Control**: Role-based permissions for operators and users - **Event Logging**: Comprehensive event emission for frontend integration ## Required Experience - **4+ years** Solidity development experience - **3+ years** smart contract deployment on mainnet - **Expert knowledge** of Ethereum/Polygon networks and gas optimization - **Production experience** with OpenZeppelin contracts and security patterns - **Strong understanding** of DeFi protocols and tokenomics - Experience with Thirdweb or similar Web3 development frameworks - Knowledge of smart contract testing and auditing practices ## Technical Requirements - Write secure, gas-efficient Solidity code following best practices - Implement proper access controls and security modifiers - Handle edge cases and error conditions gracefully - Optimize contract size and gas consumption - Write comprehensive unit and integration tests - Document contract functions and deployment procedures - Conduct security reviews and vulnerability assessments

I need a trust senior developer who is fluent English speaker

I am seeking a highly skilled and trustworthy senior developer with exceptional fluency in English. Preference will be given to candidates located in India or the USA. While senior-level experience is ideal, I am open to considering developers from the USA who possess a foundational understanding of programming. The candidate should demonstrate strong communication skills, a solid grasp of development principles, and a commitment to delivering quality work. Please share your experience and relevant projects to be considered for this opportunity.

opportunity

Senior Technical Interviewer / Client-Facing Engineer

- Role Overview We are looking for a senior engineer to join client calls and technical interviews. This role is focused entirely on communication and technical discussion, no coding or development work required. - Responsibilities • Join client meetings and technical interviews • Explain technical approaches and solutions clearly in fluent English • Answer client technical questions confidently and professionally • Create Loom videos when needed to explain concepts or ideas - Requirements • Fluent English (spoken and written) • Senior-level technical background (full-stack or architecture experience) • Strong communication and presentation skills • Comfortable representing technical expertise in live calls - Compensation & Growth • $500 per month to start • Compensation can increase based on performance and ongoing collaboration - Why This Role • No coding required • Flexible, remote, interview-focused work • Long-term growth potential - Application Step (Required) Please share a Loom video that includes: • A brief self-introduction • An overview of your most recent project, focusing on the problem, technical approach, and how you explained solutions to clients or stakeholders Video length: 5–7 minutes

Nice Dev Needed

I am in search of a talented and reliable developer to transform my innovative concept into reality. The ideal candidate should exhibit native or fluent proficiency in English, coupled with a robust background in development, programming, coding, and logical problem-solving. Effective communication and a collaborative mindset are essential attributes for this role. While I welcome applicants from diverse locations, preference will be given to those residing in the USA, UK, or India. If you are enthusiastic about bringing ideas to life and are seeking a long-term opportunity, I encourage you to submit your proposal for consideration.

opportunity

Software Development - Digital Auction Platform

We are building a next-generation digital auction platform for high-value collectibles, antiques, fine art, and luxury items. The platform will support live and timed auctions, real-time bidding, multi-currency checkout, seller consignment, user registration with ID verification (KYC), and a secure admin dashboard. It must be scalable, fast, and user-friendly for both auction house admins and bidders around the world. We’re seeking an experienced full-stack development team (or lead developer) to architect and build this system from scratch or integrate with existing API — including auction logic, bidder dashboard, catalogue uploads, admin CMS, and secure payment workflows. Knowledge of modern backend stacks (e.g., Node.js/NestJS, Python/Django), real-time bidding systems (websockets or server-sent events), and API integrations for payments/KYC is essential. The MVP should be production-ready with the ability to expand into a multi-tenant SaaS model in future phases. Looking for talented Developers with proven track record and long term collaboration. Outline your experience, proposed approach in your proposal. Budget is a placeholder for now.