- Hourly: $60.00 - $75.00
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
Job Description Summary We're looking for a senior full stack JavaScript / TypeScript engineer to join an active client engagement immediately. The work centers on taking a Chrome Extension from MVP to production, alongside a companion SaaS application used by the team managing the extension. General information This engagement is part of a larger product build for one of our clients. An MVP of the Chrome Extension has already been developed, and the focus now shifts to building, hardening, scaling, and shipping a production-ready release. The SaaS application serves the internal team that manages and operates the extension, and will be built in parallel. You'll be joining an existing engineering team with a project manager already in place. The role requires someone who can orient quickly in an active codebase, collaborate closely with teammates, and interface with project stakeholders when needed. Work is coordinated through Jira, and the team communicates via Slack and Zoom. You'll be onboarded with a Microsoft account that provides SSO access to the tools and systems you need from day one. Development work is performed by connecting to a secure dev workspace directly from your local IDE. Tasks and Deliverables - Take the Chrome Extension from MVP to a stable, production-ready release. - Contribute to the development of a companion SaaS application for the client's internal team. - Integrate into the existing engineering team and align with the project manager on priorities and delivery. - Engage with project stakeholders directly as needed throughout the engagement. - Maintain code quality, documentation, and engineering standards appropriate for a production product. Required experience - Senior-level full stack JavaScript and TypeScript experience. - Demonstrated experience building and shipping Chrome Extensions. - Strong front-end engineering skills, including a modern framework such as React. - Solid back-end experience with Node.js and REST API development. - Proven ability to onboard into an existing codebase and contribute without a long ramp-up period. - Experience working within a structured engagement — alongside a PM, an existing team, and external stakeholders. - Familiarity with Jira for task tracking and project coordination. - Excellent English communication skills; US-based or US timezone required. - Availability during standard US business hours, Monday through Friday. Nice to have: - Experience with SaaS architecture, including multi-tenant application patterns. - Familiarity with Chrome Extension APIs including content scripts, background service workers, and the Chrome storage API. - Background working in agency or client-services environments. Engagement highlights - Step into an active, well-scoped project with established project management and a clear path to production. - Work across two connected workstreams — a Chrome Extension and a SaaS platform — with room to take meaningful ownership. - Join an engaged team with strong client-side collaboration and defined stakeholder involvement. Additional information All candidates selected for engagement are subject to a standard background check prior to onboarding.
- Hourly
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
Are you an experienced web developer who loves building applications, enjoys mentoring, and is excited about leveraging AI to code faster? I am looking for a sharp, collaborative technical partner to work with me live over Zoom to build out various web applications. A core part of our workflow will involve utilizing Claude (and other AI tools) to brainstorm, scaffold, and accelerate our development process. Instead of working in isolation, you will be partnering with me in real-time to solve problems, review code, architect solutions, and push projects across the finish line. What You’ll Do Live Pair Programming: Join scheduled Zoom calls to actively write, debug, and review code together. AI Collaboration: Work alongside me to prompt, refine, and implement code generated by Claude to speed up the development lifecycle. Web Application Development: Help build, test, and deploy functional, clean web applications from scratch or improve existing codebases. Architectural Guidance: Offer advice on best practices, database design, and framework selection based on project needs. What I’m Looking For Strong Technical Foundations: Proficiency in modern web development frameworks and languages (e.g., JavaScript/TypeScript, React, Node.js, Python, or similar modern stacks). AI-Fluent: You don't just know how to code; you know how to use AI tools like Claude efficiently to debug, generate ideas, and optimize workflows. Excellent Communication & Patience: Since we will be working live on Zoom, you must be a clear communicator who enjoys explaining technical concepts and brainstorming out loud. Problem Solver: A knack for breaking down complex feature requests into manageable, step-by-step development tasks.
- Hourly: $70.00 - $85.00
- Expert
- Est. time: Less than 1 month, Less than 30 hrs/week
We are building the online storefront and patient acquisition flow for an online wellness and longevity genetics-guided brand offering peptide therapy, hormone optimization, weight loss, lab testing, and ongoing provider support. Our website is ready and we now need an expert to connect the website to the Gen-Health https://gen-health.app/api-docs?tab=v2-api platform/API and design the full patient journey from first click through provider handoff, payments, subscriptions, treatment onboarding, follow-up, status visibility, etc.
- Hourly: $70.00 - $90.00
- Expert
- Est. time: More than 6 months, 30+ hrs/week
We are a fast-growing telecom / AI-First CPaaS serving sms and voice API's. We are building the first AI-first communications platform (SMS, Voice, RCS, AI agents) designed for speed, simplicity, and real-world business outcomes. We are not looking for a “task completer.” We are looking for a true senior engineer who: thinks in systems moves fast makes decisions independently writes clean, scalable code uses AI tools (Claude, etc.) as a force multiplier ⚠️ Read This First Most applicants will not be a fit. If you need: detailed tickets hand-holding constant direction This is NOT the role for you. If you are the type of engineer who: sees a problem and solves it end-to-end improves architecture without being asked ships quickly without sacrificing quality You will thrive here. What You’ll Do Build and ship full-stack features across our platform (messaging, voice, AI workflows) Make architectural decisions (not just implement) Improve system performance, reliability, and scalability Work directly with founders (no PM layers) Move from idea → production very quickly What We Expect (Non-Negotiable) 5+ years real full-stack experience (not just titles) Strong backend experience (Node.js / APIs / infra) Strong frontend experience (React or similar) Experience building production systems at scale Ability to work autonomously with minimal direction High ownership mentality Bonus (but highly valuable) Experience with telecom / CPaaS / messaging Experience with AI integrations (LLMs, agents, workflows) Experience optimizing performance at scale Startup experience (especially early-stage or fast growth) How We Work Small, high-output team Very fast iteration cycles No unnecessary meetings High trust, high expectations We use AI tools heavily (Claude, etc.) — you should too What We Care About Most Not your resume. We care about: How you think How you build How fast you execute The quality of your code To Apply Please include: Links to projects you’ve built (real production work) A short explanation of: a system you designed end-to-end a difficult technical decision you made independently Your GitHub Optional (but strong signal): Share how you use AI (Claude, etc.) in your workflow Compensation Competitive (based on experience) Long-term opportunity with a fast-growing, profitable company If you are truly senior, this will feel obvious. If not, this role will be very uncomfortable.
- Hourly: $30.00 - $50.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
Job Description: We are looking for a skilled, "under-the-hood" Full-Stack Developer to help build out Lafayette Academy’s online portal. We have clear visual layouts, a working offline prototype, and a live front-end dashboard currently hosted on Vercel. We use AI heavily in our workflow for strategy, logic, and rapid drafting. However, we do not want an AI-only prompt engineer. We need a traditional, foundational developer who understands actual code architecture, databases, and deployment systems. If the AI generates a buggy script, you must have the depth of knowledge to debug it manually and make it work. What You Will Do: Take existing static mockups (HTML/CSS/Next.js components) and integrate them into our live Vercel environment, OR help create new mockups if the ones we have need to be upgraded. Connect user interfaces to a secure database (like Supabase or Firebase) to handle real-time student data. Help bridge our frontend to API endpoints (like OpenAI) to power our live "Personalization Cues" for instructors. Troubleshoot, debug, and optimize existing code when automated tools hit a wall. Our Tech Stack Focus: React / Next.js Vercel Hosting Tailwind CSS Database integration (SQL/Supabase/Firebase) To Apply: Please start your proposal with the words "Under the Hood." This proves you read the description. Tell us briefly about a time you had to manually fix a complex database or code glitch that automated tools couldn't solve.
- Hourly: $50.00 - $85.00
- Expert
- Est. time: More than 6 months, Less than 30 hrs/week
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.
- Hourly: $15.00 - $30.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
About the project We’re building GoodCare OS — an operating system for home care and pediatric home health agencies. Already have a polished React demo (~25,000 lines, three apps: admin web, caregiver mobile, nurse mobile) running on git hub (will share link when you apply). Our founder runs three real agencies in TN and TX, so the platform has built-in customer #1. We need a senior engineer to take this from demo to production SaaS. Sprint 1 (2 weeks) is the foundation: set up real infrastructure, migrate mocked demo data to a real Postgres database, wire up auth, get the first customer org logging in. Tech stack React 18 + Vite · Node.js · Supabase (Postgres + Auth) · Render · Netlify · Doppler · Sentry · PostHog. Familiarity with Twilio, Stripe, and React Native a plus for follow-on sprints. Must-haves • 5+ years shipping production web apps end-to-end • Strong React + TypeScript • Postgres fluency, especially row-level security • Worked at an early-stage startup as the only or one of few engineers • US-based or full overlap with US Central Time • HIPAA experience strongly preferred Nice-to-haves • Healthcare SaaS / EVV / Medicaid billing experience • Multi-tenant SaaS architecture experience • Shipped a React Native / Expo app to stores How to apply Please include: 1. Link to a production app you shipped (your role + what you built) 2. One paragraph on the trickiest production bug you ever fixed 3. Your hourly rate and availability over the next 2 weeks No agencies, no resellers, no generic proposals. I’ll respond within 48 hours to anyone whose application addresses the three points above.
- Fixed price
- Intermediate
- Est. budget: $5,000.00
Rebuild a travel agency SaaS platform from a working no-code prototype to Next.js + Supabase. Features include Notion-style CRM, AI proposal builder (Claude API), client portal, commission tracking, Stripe billing, and Duffel flights API. Row-level security required. Fixed price project. Full working prototype provided as reference.
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
Job Description: We are seeking a highly experienced developer to convert a completed Figma design into a production-ready web application that can be embedded via iframe. This is an insurance quoting platform with a multi-step user flow, so performance, reliability, and clean architecture are critical. The application must support a seamless end-to-end experience from quote intake through binding and confirmation. This is a fast-turn, high-priority project with a strict 7-day deadline. Technical Scope: Convert Figma designs into a responsive, pixel-perfect front-end Build a modular, responsive, scalable front-end architecture Develop backend to call APIs to support quoting workflow Implement multi-step form flow with validation, state management, and error handling Enable iframe embedding with proper handling of: Responsive resizing within iframe PostMessage communication (if needed) Optimize performance (fast load times, minimal bundle size) Deploy to production Core Functionality Requirements: Multi-step quote intake form Data capture + storage (database or structured backend) Quote summary / confirmation page Ability to expand into bind + payment flow (if not fully implemented, structure should support it) Admin/back-end access to view submitted quotes (light dashboard or database access is acceptable) Technical Requirements: Strong experience with React / Next.js (or similar modern framework) Backend/API development experience (Node.js, Express, serverless functions, etc.) Experience building embedded applications (iframe environments) Understanding of CORS, security best practices, and session handling Experience with form-heavy applications and user workflow optimization Ability to structure code for scalability and future API integrations Nice to Have: Experience with insurance, fintech, or quoting systems Experience integrating third-party APIs (rating engines, payments, CRM) Project Details: Timeline: 7 days (strict, non-negotiable) Start: Immediate Budget: Flat fee – please include total cost in your proposal Communication & Process: Daily progress updates required Ability to collaborate quickly and make real-time adjustments Clear documentation and clean code expected Next Steps / Application Requirements: Please include the following in your proposal: Relevant project examples (especially embedded apps or iframe-based tools) Your proposed flat fee Confirmation you can meet the 7-day deadline Your availability over the next 7 days We would like to get on a call to discuss the project immediately upon reviewing your proposal.
- Hourly
- Expert
- Est. time: 3 to 6 months, Less than 30 hrs/week
We are building an AI-adaptive financial literacy platform for high school students, funded by a U.S. Department of Education grant. The platform personalizes learning along two axes: (1) mastery-based adaptive routing driven by a diagnostic assessment, and (2) AI-generated financial scenarios using live economic data (BLS, Zillow, FRED, College Scorecard) tailored to each student's location and post-secondary plans. Phase IA Scope (This Contract) This is not a full product build. The Phase IA deliverable is: One complete working module with adaptive routing and AI scenario generation fully functional Live API integrations pulling real economic data into the scenario engine Student profile and onboarding flow Basic teacher dashboard (class progress, mastery status) Research data logging for a usability/feasibility pilot study with ~25 high school students Cloud deployment for the pilot Timeline: ~9 months, estimated start October 2026 Estimated commitment by phase: Months 1–2 (Design & Architecture): ~10 hrs/week Months 3–6 (Active Development): ~25–35 hrs/week Months 7–8 (Pilot Deployment & Study): ~15–20 hrs/week Month 9 (Wrap-up & Documentation): ~5–10 hrs/week Total estimated engagement: 600–750 hours over the project period. A successful Phase IA creates eligibility for a Phase II award ($1M, 2 years) to build the full platform. Note that we are proposing this project to the government and will only proceed once we secure funding. Required Skills & Experience Full-stack development: React or Next.js frontend, Node.js or Python backend LLM integration: OpenAI or Anthropic API, prompt engineering RAG architecture: retrieval-augmented generation with live data sources REST API integration: third-party data APIs Database design: PostgreSQL or MongoDB Secure auth with role-based access (student/teacher) Preferred Adaptive learning or assessment-driven platform experience EdTech background Familiarity with FERPA or student data privacy To Apply Submit current resume/CV Confirm you are a U.S. citizen or green card holder (hard requirement — federal contract) Briefly describe a relevant AI or adaptive platform you've built Your hourly rate and availability starting October 2026 Applications without citizenship confirmation will not be reviewed.