- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
I am a licensed therapist building a web app that helps therapists and clients be more connected with homework throughout the week. The app was built using Lovable (an AI app builder) and I need an experienced healthcare developer to review what was built, clean it up, fix any security gaps, and confirm it meets HIPAA technical requirements. This is a startup-stage project. I am the sole founder. I need someone who can communicate clearly with a non-technical person and explain what they find and why it matters. What I Need You To Do: Review all code generated by Lovable and identify security vulnerabilities Confirm or fix data encryption at rest and in transit Review every third-party service or vendor the app connects to and flag any that would require a Business Associate Agreement (BAA) Confirm that client-entered content (homework reflections) cannot be accessed by any unauthorized party Ensure the therapist and client login system is secure and roles are properly separated Confirm that the permanent crisis support button on all client-facing screens cannot be removed, bypassed, or overridden Provide a short written summary of what you found, what you fixed, and what still needs attention What This App Does NOT Do: No billing or insurance No video or scheduling No AI responding to client content No users under 18 What I'm Looking For in You: Demonstrated experience building or auditing HIPAA-compliant SaaS applications Familiarity with BAA requirements and which vendors (cloud hosts, email services, AI APIs) typically require them Experience with web apps built on modern frameworks (React, Next.js, or similar) Ability to explain technical findings in plain English Bonus: experience with mental health, therapy, or healthcare technology specifically To Apply, Please Answer These Three Questions: 1. Describe a HIPAA-compliant project you have worked on. What was the app, what did you build or audit, and what vendors required BAAs? 2. What is your process for reviewing code built by an AI tool like Lovable or Bolt? 3. What is one common HIPAA technical safeguard that early-stage health app developers frequently miss? Applications that do not answer all three questions will not be considered. This app handles real therapy client data. I take privacy and safety seriously and I am looking for someone who does too, not just someone who can write compliant-sounding documentation. Please only apply if you have genuine healthcare tech experience.
- Hourly
- Expert
- Est. time: 1 to 3 months, Not sure
Full-Stack Developer Needed to Migrate Replit Calibration Lab App to Local Server Environment Project Overview We have a custom Calibration Laboratory Management application that was developed on Replit and is currently functional. We are seeking an experienced software developer to migrate the application from the Replit environment to a locally hosted solution that can run on our company computers and servers. The goal is to create a stable, secure, and maintainable deployment that operates within our organization's network while preserving all existing functionality. Responsibilities Review and assess the existing Replit codebase Migrate the application to a local/on-premises environment Configure and deploy the application on Windows or Linux servers Migrate and configure the database (if applicable) Set up user authentication and security best practices Create installation and deployment documentation Provide recommendations for long-term maintenance and scalability Assist with testing and troubleshooting during deployment Required Skills Full-stack software development Experience with Replit migrations Node.js, React, Python, or similar web application frameworks Database administration and migration Windows Server and/or Linux server deployment Networking and local server configuration Docker experience (preferred) Git/GitHub version control Deliverables Fully functioning local version of the application Configured database and server environment Deployment documentation Backup and recovery recommendations Source code repository with all changes
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
Title: AI Agent System for SaaS Platform (Product Manager, Developer, QA, Marketing Agents) Description: We are building useContractor.ai, a contractor management SaaS platform. We are looking for an experienced AI automation engineer to build a multi-agent system that helps manage, improve, and grow our application. Initial agent ecosystem: Product Manager Agent Reviews user feedback Reviews analytics Prioritizes bugs and features Creates development tasks Developer Agent Reviews GitHub repository Generates code recommendations Creates implementation plans Assists development team QA Agent Tests workflows Identifies bugs Generates bug reports Verifies fixes Executive Reporting Agent Summarizes daily activity Reports bugs, improvements, user trends, and recommendations Requirements: OpenAI or Azure OpenAI n8n or similar orchestration platform GitHub integration Analytics integration (PostHog, Clarity, etc.) Scalable architecture for future agents Future phases: Marketing Agent Customer Support Agent Sales Agent Marketplace Moderation Agent AI Estimating Agent Please provide examples of: AI agents you have built Multi-agent systems SaaS automation projects GitHub/OpenAI integrations
- Hourly: $50.00 - $95.00
- Expert
- Est. time: More than 6 months, Less than 30 hrs/week
We're a fast-moving company with a strong in-house backend team looking to add a dedicated frontend developer on a retainer basis. This is not a one-off gig, we need someone available, responsive, and able to execute quickly when projects move. We're expanding our dev capacity and want to bring on someone who is hands-on, communicative, and fully present on every project they take on. Direct collaboration with our internal team is essential, we move fast and need someone who moves with us. WHAT YOU'LL BE DOING: Working directly alongside our in-house backend developers, design team, and marketing team to build and maintain web interfaces, implement designs, and ship features quickly. You'll own the frontend layer completely. WHAT WE NEED YOU TO KNOW COLD: - Tailwind CSS — this is non-negotiable, it's our primary styling approach - React and TypeScript — you should be writing this daily - Laravel — familiarity required, it's a core part of our backend stack - Astro — familiarity expected, you'll encounter it in our stack - Clean, responsive UI implementation with an eye for detail WHAT WE'RE LOOKING FOR: - Someone who writes their own code and takes full ownership of their work - Strong availability during US business hours - Fast turnaround without cutting corners - Clear, proactive communication throughout every project TO APPLY, PLEASE INCLUDE: - Your portfolio or GitHub link - 2–3 examples of projects built with Tailwind + React - A short note on your availability and how you handle tight deadlines
- Fixed price
- Intermediate
- Est. budget: $400.00
Overview We've built SpeakEasy (speakeasy.hrzenden.com), a SaaS HR case tracking and compliance management platform purpose-built for cannabis operators. The platform is live and actively being prepared for launch. We're looking for a reliable developer to grow with us long-term -- handling new features, improvements, and integrations as our client base grows. We're a small, fast-moving team. We don't need someone to rebuild anything -- we need someone who can come in, get oriented quickly, and execute cleanly. The Tech Stack Frontend: React 18 + Vite 5 (SPA, deployed on Netlify) Backend/Database: Supabase (Postgres, auth, row-level security, storage) Static pages: HTML/CSS/JS hosted on Netlify Version control: GitHub What's Already Built Full client portal: HR case management, compliance case tracking, written warnings and PIPs, anonymous employee reporting, role-based access, PDF export, file attachments Employee-facing anonymous reporting portal Static sales/marketing page with intake form Supabase schema with RLS policies, storage bucket, and all core tables What's Coming We have a growing list of features and improvements planned, including: Payment processing integration Automated account provisioning on signup Additional reporting and dashboard features UI/UX improvements as we learn from early clients Employee records module (longer term) We'll scope and prioritize together -- we're not looking for someone to just execute a ticket queue, but a developer who can think through problems with us. Ideal Candidate Strong React and modern JavaScript fundamentals Comfortable with Supabase (Postgres, RLS, auth, storage) Familiar with Netlify and Vite Available for regular, ongoing work (not just one-off projects) Proactive communicator -- asks questions early, flags issues before they become problems Interest in SaaS products and building something from the ground up Engagement We'd like to start with a small paid trial task to make sure it's a good fit on both sides, then move into a regular ongoing engagement. To Apply Please include: 2-3 examples of React + Supabase (or similar backend) projects Your hourly rate and typical availability per week What appeals to you about this type of project
- Fixed price
- Expert
- Est. budget: $7,200.00
Looking for an experienced full stack developer to implement an authentication, license sales, and user management system for my firm. The software to be sold are plugins for programs like Autodesk Civil3D and Bentley OpenRoads. Written in C# .NET and sold to users as a plugin folder with .dll files. Languages to be used will be Typescript for the website with React or Next.js and Subabase recommended. C# for plugin authorization module. Please see attached word document for full work order.
- Fixed price
- Intermediate
- Est. budget: $5,000.00
Project Overview RAIC Labs, an AI company specializing in geospatial intelligence, search, and monitoring solutions for Department of Defense and Commercial customers, is seeking a skilled web designer/developer to create a full redesign of our corporate website. The goal is to communicate our mission, capabilities, and technical excellence through a visually striking, mission-driven, and highly professional digital presence. Project Objectives • Redesign the RAIC Labs website from the ground up (design, UX, and development). • Establish a high-impact, modern visual identity that reflects our position in AI-driven geospatial search and monitoring. • Communicate core offerings clearly to both defense (emphasis) and commercial audiences. • Create a structure that allows future content expansion (press, use cases, blogs, partners). • Ensure the site is fast, responsive, and optimized for modern browsers and devices. Deliverables • Full site UX and UI design (wireframes, mockups, final design). • Responsive front-end build and CMS integration (or static deployment if preferred). • Core pages (examples): Home, About, Capabilities, Defense/Commercial, Careers, Contact/Book a Demo. • Brand-aligned visuals and iconography. • Basic copy integration and image optimization. • Optional: CMS setup for internal content updates. Technical Preferences • Technologies: Webflow, Next.js, or another modern front-end stack. • Hosting: GitHub Pages, Vercel, or AWS preferred. • Performance targets: rapid loading on both desktop and mobile • Structure: desktop and mobile-optimized versions • SEO and analytics integration. Qualifications • 5+ years of experience in web design and development (agency, startup, or enterprise experience preferred). • Proficiency with modern web frameworks (e.g., React, Next.js, Webflow, or similar). • Strong understanding of UX/UI principles and responsive design. • Excellent communication skills, responsiveness and attention to detail. • Portfolio demonstrating complex, visually compelling web experiences. Design Inspiration Potential design references include websites for the following companies: • Planet Labs • Black Shark AI • Palantir • Janes Defense • Black Sky • Orbital Insight/Privateer Timeline Initial concepts within 2 weeks of project launch; final design and development within 6-8 weeks.
- Hourly: $40.00 - $60.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
Web App Developer Needed — Ongoing Maintenance & Bug Fixes for Screened (myscreened.com)
- Hourly: $70.00 - $95.00
- Expert
- Est. time: More than 6 months, 30+ hrs/week
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
- Hourly: $70.00 - $90.00
- Expert
- Est. time: 3 to 6 months, Less than 30 hrs/week
Contract Full Stack Engineer – Manufacturing Data Platform Development Overview We are seeking an experienced full stack software engineer to design and implement a cloud-based manufacturing data platform to support device production testing, quality tracking, and manufacturing analytics. Our current manufacturing test workflow uses a Windows-based test application that logs production test data into Google Sheets. As we scale production and introduce contract manufacturing, we are transitioning to a structured cloud database architecture using Supabase and PostgreSQL. The contractor will be responsible for establishing the backend data infrastructure, assisting with integrating existing manufacturing test software with the new platform, and developing flexible data visualization and analytics tools for engineering and manufacturing teams. This is an opportunity to build a foundational manufacturing data system that will support production scaling, quality improvements, and future automation. Scope of Work 1. Database Architecture & Supabase Implementation Design and implement a production-ready database architecture using: Supabase PostgreSQL REST APIs Cloud-based authentication and security Responsibilities include: Define database schema for manufacturing test data Create tables and relationships for: - Device serial numbers - Production lots - Firmware versions - Hardware revisions - Test results - Calibration data - Operator information - Failure codes - Manufacturing history - Implement database indexing and optimization - Establish backup and data retention strategies - Configure user access permissions for internal teams and manufacturing partners 2. Manufacturing Test Software Integration Our existing Windows test application currently performs device testing and uploads results to Google Sheets. The contractor will: -Assist team members with replacing Google Sheets API integration with database/API integration -Develop secure REST API endpoints -Integrate authentication between the test application and backend -Design reliable data upload workflows -Handle offline operation and data synchronization considerations -Ensure robust error handling and logging Preferred experience: -C# / .NET desktop applications (current data gathering tools) -REST API development -Cloud database integration 3. Manufacturing Dashboard & Data Analytics Platform -Develop an intuitive interface for engineering, manufacturing, and quality teams. The platform should provide: High-Level Production Dashboards Examples: -Units tested per day/week/month -Production throughput -Pass/fail rates -First pass yield -Failure trends -Failure Analysis Tools Ability to analyze: -Failure categories -Failed test steps -Firmware correlation -Hardware revision correlation -Production lot trends -Time-based trends -Flexible Data Exploration The system should provide spreadsheet-like flexibility similar to Google Sheets pivot tables. Desired capabilities: -Dynamic filtering -Sorting -Grouping -Pivot-style summaries -Custom reports -Export capability (CSV/Excel) -User-defined views The implementation can be: -Web application -Desktop Windows application -Hybrid solution The priority is flexibility, maintainability, and ease of use by engineering teams. Technical Requirements Required experience: -PostgreSQL database design -Supabase platform experience -REST API development -Full stack application development -Data visualization/dashboard development -Cloud application architecture -Authentication and user management Preferred experience: -Quality systems -Production test software -Electronics manufacturing data -Statistical process control (SPC) -Yield analysis Preferred Technology Experience Backend: -PostgreSQL -Supabase -REST APIs -Python, Node.js, C#, or similar backend technologies Frontend: -React / Next.js -TypeScript -Dashboard frameworks -Data visualization libraries Desktop (optional): -C#/.NET -WPF -WinUI Analytics: -SQL reporting -Data aggregation -Pivot-style analysis tools Deliverables Phase 1 – Database Foundation -Supabase project setup -Database schema -Authentication system -API architecture documentation Phase 2 – Test Software Integration -Updated Windows tester integration -Data upload API -Error handling -Production validation Phase 3 – Manufacturing Dashboard -Production overview dashboard -Yield reporting -Failure analysis interface -Flexible data exploration tools Phase 4 – Documentation & Handoff -Database documentation -API documentation -Deployment instructions -Training for internal engineering team Contract position: Estimated duration: 3–6 months initially -Potential for ongoing support as manufacturing systems expand -Remote acceptable Ideal candidate: -Independent engineer comfortable owning architecture decisions -Able to work directly with engineering leadership -Comfortable building an initial system quickly while maintaining long-term scalability About the Product We are developing a battery-powered consumer electronics device transitioning from engineering prototypes into scaled manufacturing. The manufacturing data platform will become a critical component of our production infrastructure, supporting internal engineering teams and external manufacturing partners.