We are looking for a highly skilled Full Stack Engineer who can go beyond development and act as a technical consultant for our clients. The ideal candidate should be comfortable communicating directly with clients, leading technical discussions, and eventually taking on a Project Manager role within our team. - Requirements Strong Full Stack Software Development experience Excellent verbal communication skills and confidence in client-facing calls Ability to provide technical guidance, project planning, and consulting Strong problem-solving skills and ownership mindset Comfortable working independently in a remote environment - Mandatory Conditions Must be available and responsive during U.S. business hours (EST/PST). This is not a full-time position initially, but timely communication is required. Must have a quiet home office, reliable high-speed internet connection, and a professional-quality headset. Must be comfortable participating in client meetings and technical discussions. - Growth Opportunity If you demonstrate strong performance and reliability during the first three months, we intend to transition you into a long-term paid position within our organization.

We are building an AI-powered hospitality assistant for full-service restaurants. The product helps guests find the right dishes, increases average check size automatically, and reduces pressure on staff during peak hours — all with zero hardware required. What we need: • Mobile-first web app — opens in the browser, no download required • AI conversation layer using OpenAI GPT-4o or Anthropic Claude API • Owner dashboard for menu management, daily priorities, and live order notifications • Multi-tenant architecture — each restaurant’s data is fully isolated • Real-time notifications between guest interface and staff • Multilingual support: English, Spanish, Arabic • Milestone-based payments with a functional demo at each stage • Full IP transfer on project completion Required: • Live web apps in your portfolio that are currently active • Hands-on experience with OpenAI or Anthropic APIs — name the project • Multi-tenant SaaS experience • Willingness to sign NDA and work-for-hire agreement before project start

AI Engineer (RAG & Agentic Workflows). *LLM RESPONSES AUTOMATICALLY AVOIDED* We have already launched a production generative AI product that utilizes a custom Retrieval-Augmented Generation (RAG) architecture. We are now expanding the platform to include CRM intelligence, workflow automation, and agentic AI capabilities. This is **not** a prompt engineering role. Seeking an engineer with deep experience building and deploying production AI systems that combine LLMs with multiple structured and unstructured data sources. You should be comfortable walking into an existing, complex codebase, understanding the current architecture, and improving it. Existing AI Architecture Our current AI architecture consists of: * OpenAI embeddings * Embeddings stored in MongoDB * MongoDB Atlas Vector Search for retrieval * Retrieval from both structured SQL data and unstructured document collections * Existing tool/function-calling architecture **Please do not apply if you have not previously built or maintained production RAG systems using embeddings and vector search.** Experience specifically with **OpenAI embeddings and MongoDB Atlas Vector Search** is highly preferred. CRM Intelligence Layer We are currently building a CRM platform and need the AI to reason over CRM records, including the other records are RAG currently retrieves. You will be responsible for designing and implementing the AI integration layer that enables the LLM to intelligently retrieve and reason over CRM data. This work includes: * Designing AI tools/functions that expose CRM data to the LLM. * Implementing backend tool handlers that retrieve CRM records. * Defining tool schemas and instructions so the AI knows when and how to retrieve CRM information. * Building secure retrieval mechanisms that enforce strict user and organization-level access controls. * Transforming raw CRM records into structured, AI-ready context. The AI will need to reason across: * CRM contacts and organizations * client profiles * Deals and opportunities * Projects * Tasks and reminders * Notes * Email history * SMS and WhatsApp communications * Call transcripts * Meeting summaries * Documents and contracts * Workflow history Agentic AI & Workflow Automation * Build proactive AI agents that generate alerts, recommendations, follow-ups, reports, and suggested next actions. * Design systems capable of reasoning across both structured and unstructured data sources. * Architect and implement multi-step and multi-agent workflows. * Develop workflow intelligence that assists users in completing real-world business tasks. Required Experience * Demonstrated experience building and deploying production AI systems used by real customers. * Experience working with embeddings, vector databases, and retrieval pipelines. * Experience implementing LLM tool/function-calling architectures. * Experience integrating AI systems with business systems such as CRMs, ERPs, or other operational databases. * Experience combining structured and unstructured data within AI applications. * Strong backend engineering and systems architecture experience. * Demonstrated ability to quickly understand and improve existing codebases. * Ability to independently own and deliver complex technical initiatives. Strongly Preferred * Experience with OpenAI embeddings. * Experience with MongoDB Atlas Vector Search. * Experience building agentic AI systems and workflow automation. * Experience designing long-term memory architectures. * Experience building multi-tenant SaaS applications with strict authorization requirements. * Experience implementing evaluation and monitoring pipelines for production AI systems. What We Value * High accountability and ownership. * Strong communication skills. * Product thinking and user empathy. * Ability to understand user workflows before writing code. * Pragmatism and sound engineering judgment. PLEASE DO NOT WASTE OUR TIME IF YOU NOT MEET THE REQUIREMENTS 

Summary We are looking for a Full Stack .NET Developer with experience in .NET, CSS, Javascript, Bootstrap 3 & 5, and React frameworks for project specific work. We are looking to convert pages from Bootstrap 3 to Bootstrap 5. If you are comfortable working in new modern .NET and legacy .NET Framework, while moving quickly from idea, design, and to working code, know how to leverage AI tools as a force multiplier (not a crutch), and enjoy building SOLID, clean, maintainable systems end-to-end, we would like to hear from you. Professional Qualifications: ASP.NET MVC, .NET, C#, React, Javascript, jQuery, HTML/CSS, Bootstrap 3 & 5 migrations, Azure, DevOps. Leverage AI as a productivity multiplier to solve business problems and improve internal processes. Solid problem-solving and debugging skills, with the ability to tackle more complex and ambiguous issues. Proficiency in software development best practices, including SOLID principles, design patterns, and testing strategies. Experience designing, developing, and maintaining end-to-end features or services of moderate complexity. Familiarity with system architecture concepts and ability to articulate trade-offs. Prior experience mentoring peers and sharing knowledge and best practices to strengthen team capabilities. Personal Qualifications: Strong ownership mindset with the ability to work independently on larger scopes. Proactive communicator who ensures alignment across team members and stakeholders. Demonstrates leadership qualities, including empathy, patience, and clarity when mentoring or reviewing code.

I’m building the final UX surfaces for a July 1 SaaS launch and need a fast, reliable React + Supabase engineer who can execute clean, production‑ready screens and flows. The project is front‑end heavy, well‑defined, and focused on UI polish, dashboards, forms, and simple Supabase integrations. You’ll work directly with me (the founder) in a clear, async workflow with daily check‑ins. I move quickly, communicate clearly, and provide detailed requirements for each screen or flow. What I need built Dashboard_flows - user dashboards, scoring views, operator tools UX_surfaces - responsive screens using React, TypeScript, Tailwind Form_and_flow_logic - multi‑step flows, validation, state handling Supabase_integration - basic CRUD, auth, RLS‑safe queries Admin tools - simple internal views for data visibility UI polish - spacing, alignment, loading/error states Stripe_integration - light subscription or billing touchpoints This is not deep backend work. It’s clean, fast UI execution. How I work Clear requirements - I provide detailed specs for each screen Async- updates - daily check‑ins, async communication Fast iteration - I respond quickly and unblock immediately Direct founder access - no layers, no bureaucracy What I’m looking for React Typescript experience Tailwind UI polish Supabase familiarity Stripe comfort Clean communication US based Timeline & budget Start today 2 to 3 week contract 45 to 70 hr Potential ongoing work If you can start immediately and have examples of polished React/Tailwind work, I’d love to see your GitHub or recent projects.

I’m looking for an experienced U.S.-based Full Stack React Developer to help build a modern sports platform for high school athletics. The backend and database have already been started in Base44. I need someone who can improve the frontend, clean up the data architecture, and help scale the project. This is a long-term opportunity. Ideally, I’d like someone who can become the lead developer as the project grows.

Nexset LLC is a New York tech startup seeking a senior Full-Stack Mobile Engineer or Tech Lead to architect, test, and publicly launch a lean, location-based marketplace MVP for both iOS and Android. The role involves leading the full development lifecycle and end-to-end deployment to both the Apple App Store and Google Play Store, ensuring high performance, reliability, and total compliance with platform guidelines. REQUIRED TECHNICAL QUALIFICATIONS & SKILLS:Mobile Stack: Flutter/Dart or React Native (Cross-platform delivery to iOS and Android)FinTech Integrations: Full-Stack Stripe Connect API (Express or Custom architectures)Transaction Logic: Experience with "Authorize and Capture" workflows & multi-party split payoutsAdministrative Console: Development of a secure, private Web Admin Dashboard (via Firebase/Supabase) to track transaction analytics, monitor aggregate bookings, and view a live technical error log/bug tracker to address pending system issues from the front of the house.App Store Deployment & Review: Full ownership of compiling build files, managing submission compliance, and resolving any technical or financial reviewer rejections as part of the core project scope until the application is officially approved and live on both the Apple App Store and Google Play Store.Core Mobile OS Features: Native GPS location mapping/Geo-queries & dynamic QR-code deep-linkingESTIMATE & PROPOSAL REQUIREMENTS:Project Type: Fixed-Price / Flat-Fee Milestone Contract.Professional Estimate Required: We respect your expertise and labor value. Please provide your professional flat-fee cost and development timeline estimate based on the full scope above, explicitly including all engineering hours required through final public deployment on both stores.Payment Framework: Strict 50/50 milestone structure. A 50% upfront commencement deposit initiates the project. The final 50% completion payout is strictly distributed only after the app passes official reviews and launches live for the public to download on iOS and Android. All technical revisions required to clear the platform review phases are strictly included within this flat-fee contract scope. We do not accept uncompiled raw code text files as a finished project.Code Ownership: Daily raw code pushes to a private, client-owned GitHub repository.Legal Shield: Unilateral NDA & Work-For-Hire IP Assignment required before disclosure of full functional specs.TO APPLY:Reply with links to live iOS and Android apps you have deployed featuring multi-party Stripe Connect billing or live geolocation mapping. Please provide your initial, professional cost and timeline estimate based on this full end-to-end scope.

We are building a next-generation workflow automation platform that combines deterministic business rules, artificial intelligence, document intelligence, and human review workflows into a single operating system. This is not a traditional CRM project. Our vision is to develop a doctrine-driven platform where business rules serve as the system authority, AI serves as an analytical and drafting layer, and human reviewers serve as the final compliance checkpoint. We are seeking an experienced engineer or engineering partner who can help architect and build the platform from the ground up. Project Objectives The platform will: • Ingest and analyze large volumes of structured and unstructured documents • Extract data from reports, PDFs, and supporting documentation • Apply rule-based workflow logic • Generate AI-assisted recommendations and draft outputs • Maintain complete audit trails and workflow transparency • Route work through human review checkpoints • Support future deployment of local AI infrastructure for privacy and performance Core Architecture The system will be built around four primary layers: 1. Rules Engine * Deterministic business logic * Workflow orchestration * State management * Trigger and escalation logic * Audit tracking 2. AI Layer * Document analysis * Classification * Pattern detection * Summarization * Draft generation * Structured outputs 3. Local Processing Layer * OCR * Document parsing * Data extraction * Vector search * Local inference capabilities * Privacy-first processing 4. Human Review Layer * Quality assurance * Workflow approvals * Compliance review * Exception handling Initial Development Priorities Phase 1 • User authentication • Client record management • Document upload system • OCR and document extraction • Workflow engine • Rule-based status management • Review dashboard Phase 2 • AI-powered document analysis • Automated classification • Recommendation engine • Draft generation workflows • Response parsing Phase 3 • Local AI infrastructure • Vector database integration • Knowledge retrieval system • Multi-agent workflow orchestration • Advanced automation Desired Technical Experience Required • React / Next.js • Node.js, Python, or similar backend framework • PostgreSQL or equivalent relational database • REST APIs • Cloud infrastructure (AWS, Azure, or GCP) • Workflow automation systems • Document processing pipelines Preferred • OpenAI APIs • Anthropic APIs • Retrieval-Augmented Generation (RAG) • LangGraph, LangChain, or similar frameworks • Vector databases • OCR technologies • AI agent architectures • NVIDIA AI ecosystem • Local model deployment What We Are Looking For We are not looking for someone who simply builds forms and dashboards. We are looking for a builder who understands how to combine: • Rules engines • Artificial intelligence • Workflow automation • Human review systems • Scalable software architecture The ideal candidate enjoys solving complex business process problems and translating expert decision-making into software systems. Engagement Structure Open to: • Fractional CTO • Lead Architect • Senior Full-Stack Engineer • AI Systems Engineer • Development Agency • Long-term strategic technology partner To Apply Please provide: • Relevant project examples • Experience building workflow automation platforms • Experience with AI-powered applications • Technology stack recommendations • Estimated availability • Preferred engagement structure

Website audit and bug fix. Integrations to: Yoti, Twilio, Vultr, Wasabi, MassPay, and PaymentCloud.

Sphere Inc. is building a new AI-powered SaaS platform for the U.S. healthcare industry. We're looking for a senior engineer who enjoys building products from scratch, making technical decisions, and shipping production-quality software. This is an MVP that will quickly transition into production, so we're looking for someone who is comfortable owning architecture, development, deployment, and AI integration. We're developing a HIPAA-compliant Care Coordination Platform that helps physicians, nurses, and care coordinators manage chronic care patients more efficiently. A patient with diabetes and hypertension visits a primary care clinic. Instead of manually reviewing hundreds of pages of clinical notes, lab results, discharge summaries, and specialist referrals, the provider uploads the patient's records. The AI platform will: - Extract structured medical information from uploaded documents - Generate concise clinical summaries - Highlight medication conflicts and missing follow-ups - Detect abnormal lab trends - Recommend preventive care actions based on clinical guidelines - Generate visit notes and patient-friendly summaries - Allow physicians to approve, edit, or reject AI-generated recommendations - Maintain complete audit trails for HIPAA compliance The system must never expose PHI to unauthorized users and must meet healthcare security best practices. You'll work directly with our founders to design and build the MVP. Responsibilities include: - Design scalable backend architecture - Develop responsive React/Next.js frontend - Build secure REST APIs - Integrate OpenAI, Anthropic, or Azure OpenAI - Implement Retrieval-Augmented Generation (RAG) - Build document ingestion pipelines - Implement vector search - Build role-based access control - Design PostgreSQL database schema - Implement authentication and authorization - Deploy production infrastructure on AWS or Azure - Write automated tests - Optimize AI performance and costs Candidates should understand: - HIPAA Security Rule - PHI handling - Encryption at rest and in transit - Audit logging - Role-based permissions - Secure cloud architecture - Least-privilege access - Secrets management - BAA-aware cloud services Previous healthcare or medical SaaS experience is highly preferred. To Apply Please include the following in your proposal: - Links to recent AI SaaS or healthcare projects - Your GitHub profile - A brief description of your HIPAA or healthcare experience - 5–10 minute Loom video walkthrough of a HIPAA-compliant AI or SaaS project you personally built, highlighting the architecture, technical decisions, and your specific contributions.