We're a two-year-old company doing major revenue in lead generation. We buy media, generate leads, and route and sell them to insurance agents. Ping post, tracking, data management at volume, roughly 350,000 leads a month across multiple websites and servers. We've grown fast and our codebase reflects that. We have a few hundred thousand lines of code that needs organizing. A lot of that is cleanup and refactoring: taking hardcoded logic and making it adjustable, and getting our operations running from a centralized dashboard that also handles tracking. Right now every change needs a developer, and we can't onboard new people easily. That's the bottleneck we want solved. Two milestones 1. Organize the codebase. We need a codebase that a new dev can be onboarded into and understand. 2. Build a control panel. Take what's hardcoded, lead routing, reporting, tracking, and put it behind a centralized dashboard we can adjust ourselves. What comes after We'd prefer this becomes long term. Once these two are done well, the next step is custom integrations and ongoing ops work, and by then you'd know this system better than anyone. We're not promising that up front, but we like keeping people who do good work. Important This is a refactor. We don't want everything rewritten. The system runs live and spends real money daily. It stays running the whole time. Who we want -Strong full stack: PHP, API integrations. -Background in affiliate marketing, lead generation, performance marketing, or moving data around at huge scale. Our platform is fundamentally about moving data around, routing it, tracking it, attributing it. High-volume data systems experience counts too. If you have experience in full stack, moving large amounts of data around, are creative, and US-based, let's talk and see if it's a good fit!

Full-stack developer (Node.js/TypeScript, React) with cloud/DevOps experience, and comfortable with PostgreSQL, S3-compatible storage, and Google Cloud service accounts. This is to support solid mobile app built for dual platforms, with a full ML comparison pipeline, and the supporting infrastructure. Initial Task will be an infrastructure migration (DevOps). Second task will be several front end and backend app updates.

We run a fantasy football content site and want to add a daily fantasy sports (DFS) lineup optimizer tool — similar in function to dailyfantasyoptimizer.com — that lets users upload player pools/projections and generate optimal DraftKings (and ideally FanDuel) lineups. Core features needed: - Linear programming / optimization engine to generate optimal lineups under salary cap constraints (standard knapsack-style DFS optimization) - CSV upload for player salaries + projections (matching DraftKings/FanDuel export format) - Support for player exposure limits (max % of lineups a player appears in) - Stacking rules (e.g., QB + WR from same team, game stacks) - Bulk lineup generation (50-150 unique lineups per run) - Export lineups in DraftKings-compatible CSV format for direct upload - Clean, simple single-page UI — no manual required to use it - Start with NFL support (single sport is fine for v1; architecture should allow adding NBA/MLB later) Nice to have (not required for v1): - Editable/custom projections per player - Basic backtesting against historical slates - Player pool filtering (by position, salary, team) What we need from you: - Experience building optimization tools (linear/integer programming — PuLP, OR-Tools, or similar) - Familiarity with DFS site formats (DraftKings/FanDuel) is a strong plus - Ability to deliver a working, deployable web app (front end + backend), not just a script - Clear communication and milestone-based delivery Please include in your proposal: relevant past projects (optimization tools, sports betting/DFS tools, or similar), your suggested tech stack, and a rough timeline/cost estimate for a v1 NFL-only version.

Vienna Consulting is a consulting firm that has built a modern, referral-based home-services platform that connects homeowners with vetted, licensed service providers. The platform is already live. I'm looking for a solo developer to build two well-defined features on the existing codebase. The stack is React on the front end, Python on the back end, MongoDB on Atlas for the database, hosted on Render, with Google OAuth for login. The two areas you'd build sit behind a login, so they aren't publicly viewable,I'll walk you through the existing system before you start. Then, what I need built. One, the Admin Dashboard, build this first,a simple control panel to create and manage users by hand, clean directories of your customers, agencies, and technicians, and a detailed booking view. Two, the Commission Ledger,marking a job Completed logs a flat one hundred dollars, each technician sees Lifetime Earnings, Paid to Date, and Current Balance Owed, paid records are kept never deleted, and the app only tracks money, never moves it. Keep it lean and simple. Who you're looking for: a solo developer comfortable in an existing codebase, strong fluent English, closest to Eastern Time preferred. Hiring process: a live video call is required before hiring, non-negotiable, and you'll start with one small trial task first.

U.S.-BASED APPLICANTS ONLY I am a business owner with a few software/app projects. I understand my industries, customers, and what I need the products to accomplish, but I am not a software developer. I am looking for an experienced part-time Technical Lead / Fractional CTO who can represent my side of the development process and help manage the technical execution of my projects. This is not primarily a programming position. I already use developers for implementation. I need someone experienced enough to understand the applications, translate my business requirements into clear technical specifications, communicate directly with developers in technical terms, review their work, and tell me whether what I'm being told and delivered is correct. What I need from you Understand what I want the product to accomplish from the user's/business perspective. Turn those requirements into clear technical specifications and milestones. Communicate directly with developers and handle technical discussions that don't require my involvement. Review existing codebases, architecture, APIs, databases and deployment setups. Review proposed solutions before developers spend significant time implementing them. Review code and completed milestones and tell me whether the work is actually complete before I approve payment. Identify unnecessary rebuilds, poor architecture, security problems, technical debt or developer shortcuts. Help evaluate and interview developers when I need additional specialists. Coordinate multiple developers when appropriate. Make sure repositories, hosting, domains, databases, APIs, Apple/Google developer accounts and other critical assets remain under my company's ownership and control. Help take applications through Apple App Store and Google Play production releases when necessary. Technical background You do not need to personally be the best developer in every technology involved, but you need enough hands-on technical experience to confidently oversee developers working with technologies such as React Native, iOS/Android, JavaScript/TypeScript, Node.js/Express, APIs, databases, authentication/security, cloud deployment, PWAs, Git/GitHub, mapping/GPS, AI/LLM integrations, and App Store/Google Play deployment. Experience with logistics, transportation, mapping/navigation, marketplaces or SaaS products would be particularly valuable. Working relationship This will begin as a part-time position. I am not looking for someone doing routine programming 30–40 hours per week. I want someone I can use when I need technical leadership: reviewing a project, defining work, talking with developers, checking a milestone, resolving a technical disagreement, or helping select the right approach. Occasional face-to-face meetings are important to me. Much of the work can be remote, but I specifically want someone U.S.-based who is willing and able to meet with me periodically. When applying, please answer: Where are you physically located? Are you willing to meet with me in person periodically? Describe your experience leading or supervising software developers. Have you inherited existing applications/codebases and evaluated another developer's work? Give examples. What mobile applications have you personally helped take to production on both Apple App Store and Google Play? How comfortable are you reviewing React Native, Node/backend, database, API and cloud architecture? Describe any mapping/GPS, logistics, transportation or marketplace applications you've worked on. How do you determine whether a developer's milestone is genuinely complete before recommending that the client approve it? How would you protect a business owner from becoming dependent on a developer who controls the repository, hosting, database or other critical infrastructure? Are you comfortable communicating directly with overseas developers and leading technical calls on my behalf? Please begin your proposal with the words OWNER SIDE so I know you read the posting. I am looking for a long-term relationship with the right person who could eventually become the technical person overseeing multiple existing and future products for my companies.

Full-Stack Developer Needed — Agricultural SaaS / Grain Management Web App MVP Project Overview I am looking for an experienced full-stack developer to build the first working browser-based MVP of GrainTrack, a grain inventory, contract, and delivery management application for farmers. The long-term goal is to give farmers one place to track: Grain inventory Grain contracts across multiple elevators/buyers Bushels sold Bushels delivered Remaining contract obligations Bushels still available to sell Weighted average selling price Physical grain by storage location Contract documents Scale tickets Future phases will include AI-powered contract and scale-ticket scanning. For this project, I am ONLY looking to build Phase 1. A starter project package and detailed product specifications are already available. Phase 1 Goal Build a secure, responsive web application that allows a farmer to: Create an account Create a farm Select a crop year Select commodities Enter estimated production Create buyers/elevators Create delivery/storage locations Enter grain contracts manually View contract details Automatically calculate the farm's grain position View that information on a professional dashboard The application should work well on desktop, tablet, and mobile browsers. Core Dashboard The dashboard should display grain information by commodity. Example: 2026 Corn Expected Production: 180,000 bu Physical Inventory: 127,750 bu Contracted: 110,000 bu Delivered: 32,500 bu Remaining on Contracts: 77,500 bu Estimated Available to Sell: 70,000 bu Physical Grain Not Committed: 50,250 bu Percent Sold: 61.1% Weighted Average Final Price: $4.82/bu The dashboard should use clean cards, tables, progress indicators, and alerts similar to a modern SaaS dashboard. UI mockups will be provided. Important Grain Calculations Critical calculations must be performed on the backend rather than independently in the browser. Estimated Available to Sell Expected Production - Total Active Contracted Bushels Example: 180,000 - 110,000 = 70,000 bu Percent Sold Total Contracted ÷ Expected Production × 100 Example: 110,000 ÷ 180,000 = 61.1% Remaining Contract Quantity Adjusted Contract Quantity - Confirmed Delivered Quantity Physical Grain Not Committed Current Physical Inventory - Remaining Contract Obligations Weighted Average Contract Price Sum of: Contract Quantity × Final Cash Price divided by: Total Final-Priced Bushels A simple average of contract prices must NOT be used. Detailed calculation specifications will be provided. Commodities The application must NOT be hard-coded only for corn, soybeans, and wheat. Default commodities should include: Corn Soybeans Wheat Barley Oats Grain Sorghum / Milo Canola Sunflowers Rice The system must also support: + Add Another Commodity Custom commodities should support: Commodity name Default unit Optional standard pounds per bushel Notes All contracts, inventory, deliveries, reports, and calculations should reference a commodity ID. Crop Years Records must be separated by crop year. Examples: 2025 Corn 2026 Corn 2027 Corn The system must NOT assume crop year based on delivery date. This is important because farmers may carry older grain into a new calendar year. Buyers / Elevators Farmers need to create and manage multiple grain buyers. Examples: ABC Elevator XYZ Grain Local Co-Op A buyer may have multiple delivery locations. Locations Locations may include: Farm Bin Grain Bag Flat Storage Elevator Processor Terminal Other Example: ABC Elevator could have: Newark Utica Johnstown as separate delivery locations. Contracts Farmers must be able to manually create grain contracts. Required fields should include: Farm Crop year Commodity Buyer Delivery location Contract number Contract date Contract quantity Contract type Cash price Futures price Basis Futures month Delivery start date Delivery end date Notes Status Contract types should include: Fixed Price Basis HTA Average Price Minimum Price Other Contract Detail Screen Each contract should display: Buyer Location Commodity Crop year Contract number Contract quantity Pricing information Delivery period Delivered bushels Remaining bushels Percent delivered Estimated contract value Status Notes Later phases will attach scanned documents and scale tickets. Pricing Rules Contracts without a finalized cash price must NOT incorrectly affect the final weighted average cash price. Example: 20,000 bu basis contract Basis = +$0.10 Futures = Open This contract counts toward: Total Contracted Bushels but does NOT count toward: Weighted Average Final Cash Price until the cash price is finalized. The architecture should allow pricing components to be expanded later. Database Preferred database: PostgreSQL The database should be relational and designed to support future expansion. Core entities include: Users Farms Farm Users Crop Years Commodities Farm Crops Buyers Locations Contracts Contract Pricing Inventory Transactions Deliveries Delivery Allocations Documents Alerts Audit Records A database architecture specification will be provided. Preferred Technology Preferred stack: Frontend React / Next.js Backend Next.js API or Node.js Database PostgreSQL Authentication A secure managed authentication solution is acceptable. Hosting Modern managed cloud hosting. I am open to recommendations if you believe another stack would be materially better, but please explain why. Architecture Requirements The application should maintain clear separation between: Frontend UI and user interaction Backend/API Business logic and permissions Database Source records Calculation Engine Derived grain-position calculations Critical financial/inventory calculations should NOT be scattered throughout frontend components. Phase 1 Deliverables The developer should deliver: Working browser-based GrainTrack application Responsive desktop/tablet/mobile interface Authentication Farm setup Crop-year management Standard and custom commodities Buyer management Location management Estimated production entry Manual contract entry Contract list Contract detail screen Working calculation engine Grain-position dashboard PostgreSQL database Database migrations Sample/demo farm data Automated tests for important calculations Deployment to a private test environment Source code in my GitHub repository Setup/deployment documentation Demo Data The application should include a demo farm so functionality can be tested immediately. Example: Farm: Greenfield Farms Crop Year: 2026 Corn Expected Production: 180,000 bu Contracts: Multiple contracts totaling 110,000 bu Expected dashboard result: Contracted: 110,000 bu Percent Sold: 61.1% Estimated Available to Sell: 70,000 bu The developer should create automated tests verifying these calculations. Acceptance Tests The project will be considered successful when the following scenarios work correctly. Test 1 — Production Farmer enters: 180,000 bu expected 2026 corn production. Dashboard displays: 180,000 bu expected production. Test 2 — Contracts Farmer enters contracts totaling: 110,000 bu. Dashboard displays: 110,000 bu contracted. Test 3 — Available to Sell System calculates: 180,000 - 110,000 = 70,000 bu Estimated Available to Sell. Test 4 — Percent Sold System calculates: 110,000 ÷ 180,000 = 61.1% Sold. Test 5 — Weighted Average Price Multiple contracts with different quantities and prices produce the correct bushel-weighted average. Test 6 — Basis Contract A basis contract with open futures: counts toward contracted bushels does NOT count toward final cash-price average Test 7 — Cancelled Contract A cancelled contract does not count toward active contracted bushels. Test 8 — Custom Commodity Farmer can select: + Add Another Commodity create a custom commodity, and use it throughout the application. NOT Included in Phase 1 Please do NOT include the following in your Phase 1 quote unless clearly identified as an optional add-on: AI contract scanning AI scale-ticket scanning Native iPhone app Native Android app Live futures prices Grain marketing recommendations Crop insurance Farm accounting Field management Equipment management Weather Settlement processing Payment processing These are potential future phases. Future Phase 2 Phase 2 is expected to add: Physical inventory Farm bins/storage locations Deliveries Scale tickets Contract allocations Remaining contract balances Physical Grain Not Committed calculation Inventory coverage Alerts Strong performance on Phase 1 could lead directly to Phase 2. Future Phase 3 — AI Document Scanning A major future feature will allow farmers to photograph grain contracts and scale tickets. Contract Scan Farmer takes photo. AI extracts: Buyer Location Contract number Commodity Crop year Quantity Price Basis Futures Delivery period Farmer reviews and confirms before a contract is created. Scale Ticket Scan Farmer photographs scale ticket. AI extracts: Buyer Location Ticket number Date Commodity Weights Bushels Contract number The system suggests the appropriate contract. Farmer confirms before inventory or contract balances change. Experience with OCR, document AI, computer vision, or LLM/vision APIs is therefore a significant plus. Security The application will eventually contain important farm business information. Required practices include: HTTPS Secure password/authentication handling Farm-level authorization Secure environment variables Database backups Secure document architecture No cross-farm data exposure Auditability for important changes Source Code & Ownership This is important. All source code produced for this project will be owned by me upon payment. The developer must work in a GitHub repository controlled by me. I must have administrative access to: GitHub Hosting Database Authentication service Storage Domain/DNS when applicable Any third-party services created specifically for GrainTrack The project must not depend on developer-owned accounts that I cannot access. Any third-party/open-source libraries must be properly licensed for commercial use. Documentation At completion, provide documentation covering: Local development setup Environment variables Database setup Database migrations Deployment Authentication configuration How to add commodities How calculations work How to run automated tests Another competent developer should be able to take over the project using this documentation. Developer Qualifications Please apply if you have strong experience with: React Next.js TypeScript PostgreSQL Relational database design SaaS applications Authentication Responsive web applications API development Automated testing Cloud deployment Strong bonus experience: Agricultural software Inventory systems Commodity/grain systems Financial applications OCR Document processing AI/vision APIs Agricultural experience is helpful but NOT required. I can provide the grain-industry/business logic. Budget & Contract Structure I prefer a: Fixed-price Phase 1 project with milestone payments. Target budget: $3,000–$8,000 Please do not simply bid the maximum budget. Provide your proposed fixed price based on the specifications above. If you believe the scope requires more or less, explain why. Suggested Milestones Milestone 1 — Foundation Project setup Authentication PostgreSQL Farm setup Crop years Commodities Milestone 2 — Grain Data Buyers Locations Production estimates Contract entry Contract management Milestone 3 — Calculation Engine Contract totals Available to sell Percent sold Weighted average price Pricing-status rules Automated tests Milestone 4 — Dashboard Dashboard UI Responsive layout Contract detail Filters Demo farm Milestone 5 — Deployment & Handoff Private production-like deployment Testing Bug fixes Documentation Full repository/account handoff Payments should correspond to accepted working milestones rather than elapsed time. What I Will Provide I will provide: Product vision Dashboard mockups Contract screen mockups Inventory mockups Reports mockups Database architecture Business rules Calculation-engine specification API/backend specification Starter project package Example grain contracts/data Grain-industry guidance The developer is not starting from only an idea. Much of the product and business logic has already been defined. Application Instructions Please begin your proposal with: GRAINTRACK This confirms you read the complete posting. Then answer these questions: 1. Show me 2–3 SaaS applications you have personally built or substantially contributed to. Explain exactly what you built on each project. 2. Describe your experience with: Next.js + TypeScript + PostgreSQL 3. How would you structure the calculation engine so critical grain calculations are not duplicated throughout the frontend? 4. How would you handle a basis contract where the basis is established but the futures price is still open? I am not necessarily looking for grain-industry terminology. I want to see how you think about partially complete pricing data. 5. How would you design the database so one farmer can have: Multiple farms Multiple crop years Multiple commodities Multiple buyers Multiple delivery locations without mixing data between farms? 6. How would you prevent one customer's farm data from ever being visible to another customer? 7. What automated tests would you write for the calculation engine? 8. What would your proposed technology stack be? If different from the preferred stack, explain why. 9. What is your fixed-price quote for Phase 1? 10. What timeline would you propose? 11. Are you personally doing the work, or will any portion be subcontracted? If subcontracted, explain which parts. 12. Have you worked with OCR, document AI, or vision/LLM APIs? This is not required for Phase 1 but will matter for future phases. Important I am looking for someone who could potentially continue through Phases 2 and 3 if Phase 1 goes well. I value: Clean architecture Accurate calculations Communication Documentation Maintainable code more than adding unnecessary features quickly. The goal of Phase 1 is to create a solid foundation for a commercial agricultural SaaS product—not to build every possible GrainTrack feature at once.

We are seeking a part-time frontend-leaning fullstack developer to migrate our marketing website from WordPress to a Next.js + Sanity stack. The ideal candidate will have experience in both frontend and backend technologies, with a strong focus on Next.js and Sanity. The role involves ensuring a seamless transition while maintaining the site's functionality and design. The commitment is around 20 hours per week.

Summary: We are building Sphere Inc., an AI-powered SaaS platform focused on the real estate industry. The product is currently in the MVP stage, and we are looking for a strong full-stack developer who can help us build, refine, and launch the first working version. The platform is designed to help real estate businesses automate daily operations, improve decision-making, and use AI agents to support workflows such as property management, lead handling, deal analysis, document processing, reporting, and business automation. This is not a basic website project. We are building a real SaaS product with a modern frontend, reliable backend, AI-powered workflows, and scalable AWS infrastructure. Current Project Status: The product vision and core direction are already defined. We are currently shaping the MVP workflows, user experience, and technical structure. At this stage, our main need is execution. We need someone who can help turn the concept into a working MVP that can be tested with real users. Some workflows are still being refined, so we are looking for a developer who can contribute both technically and practically — not just write code from fixed tickets. Current Progress & Bottlenecks We have a clear direction, but need support with - Structuring the MVP architecture - Building the frontend and backend features - Designing practical AI agent workflows - Connecting AI features with real estate data and user actions - Setting up AWS infrastructure for development and deployment - Creating a clean experience for non-technical business users - Prioritizing the most important MVP features The main bottleneck right now is moving from concept/prototype stage into a stable, usable product. We are looking for someone who has experience with - Building SaaS products from MVP to production - Full-stack development with Python, Node.js, JavaScript, and TypeScript - Frontend development using React, Next.js, or similar frameworks - Backend APIs, database design, authentication, and user roles - AI agents, LLM integrations, workflow automation, or RAG - AWS deployment, storage, monitoring, and security - Real estate platforms, CRMs, property data, document workflows, reporting, or automation tools - Writing clean, maintainable, and scalable code Tech Stack: Python, Node.js, JavaScript/TypeScript, React or Next.js, PostgreSQL, AWS, REST APIs, and AI/LLM tools such as OpenAI, Anthropic, AWS Bedrock, LangChain, LangGraph, or similar frameworks. Responsibilities: - Build frontend and backend features for the MVP - Design and implement AI-powered workflows and agent features - Connect APIs, databases, authentication, and user roles - Set up or improve AWS infrastructure - Help prioritize features and identify technical risks - Communicate progress clearly and regularly Some Knowledge That Is a Plus: - Real estate CRM, property management, brokerage, acquisitions, or leasing platform experience - AWS Bedrock, LangChain, LangGraph, or vector databases - Multi-tenant SaaS architecture - Stripe or subscription billing - DevOps, Docker, CI/CD, and testing - Analytics dashboards, reporting tools, or document automation The ideal candidate is a reliable full-stack developer who can work independently, understand the product vision, ask smart questions, and help us make practical technical decisions during the MVP stage. We need someone who is comfortable in an early-stage environment and can help turn a clear idea into a working SaaS product for real estate users. Please include: 1. Your GitHub, portfolio, or examples of previous work 2. A brief description of your related SaaS experience 3. Examples of AI agent, AI automation, or LLM-powered products you have built 4. Your AWS experience 5. Any real estate platform, CRM, data, or automation experience 6. Your availability and preferred working style We are looking for someone who can help us build the MVP now and potentially continue with us as the platform grows.

We are looking for an experienced Full-Stack AI Developer to build and improve modern AI-powered web applications. The ideal candidate should have strong experience in frontend and backend development, AI integrations, LLMs, LangChain, RAG pipelines, vector databases, APIs and scalable system architecture. Required Skills: * React.js, Next.js and TypeScript * Node.js and Python * LangChain, LLMs and RAG * OpenAI, Claude or similar AI APIs * Vector databases such as Pinecone, Qdrant or Weaviate * REST APIs, databases and third-party integrations * Strong knowledge of software architecture and clean code * Experience with Claude Code, Cursor or similar AI development tools * Excellent English communication and problem-solving skills Please share your GitHub profile, relevant AI projects and a short Loom video explaining one live Full-Stack AI application you have built.

We're looking for a senior full-stack engineer to take on hands-on work across our web platform, architecting features, building APIs, and delivering polished, performant UI. Looking for someone that can do full stack but is heavy UI developmenet leaning. You'll be doing: Building full-stack features end-to-end (dashboards, booking, payments, admin tools, etc.) Modernizing existing code and reducing technical debt Node.js services, REST APIs. Performance optimization across front-end and backend CI/CD, automated testing, container-based deploys You should have: 8+ years building production web apps Strong TypeScript across a modern framework (React) Solid Node.js / Express backend experience AWS or GCP, Docker, and CI/CD experience Comfort with PostgreSQL Automated testing (Jest, Vitest, or similar) Bonus: AdonisJS, Golang