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  • Fixed price
  • Intermediate
  • Est. budget: $5,000.00

I'm a solo, non-techncial founder and need someone to help me build and launch a mobile app. I had a previous team build a semi-functional prototype in TestFlight and have identified a number of areas in which certain features aren't working as envisioned. The project involves leveraging the work done to-date on the existing app to ensure it is user-friendly and aligns with the project vision. The ideal candidate should have experience in mobile app development and be able to work iteratively to improve the app's functionality and design. As we move forward, I can provide GitHub access to the underlying code the team has delivered to-date as well as inviting you to as a test user in TestFlight and sharing the notes I've compiled on desired improvements / changes. I'm open to a fee arrangement or, with the right person/group, a longer-term / creative partnership.

  • Hourly: $45.00 - $75.00
  • Expert
  • Est. time: 1 to 3 months, Not sure

I'm building a medical education app for nurse anesthesia students called Remy at remyanesthesia.com. Built in Lovable with Supabase and React. The app is working but has several bugs I need fixed. Bugs to fix: Questions always appear in same order — need randomization Answer choices always in same order — need shuffling Select all that apply only allows one selection Bottom navigation disappears during flip card sessions Flip card drug name too large on mobile I will add you as a collaborator on my Lovable project. Estimated 3-5 hours. Looking for someone with Lovable and Supabase experience.

  • 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.

Posted last week
  • Fixed price
  • Expert
  • Est. budget: $120,000.00

Existing founder is looking for a full stack engineer to be the founding engineer at Socratix, an agentic AI powered data platform for sales teams connecting Zoom, Teams and other communication data together to drive insights and deals. Product is currently in MVP state and requires development to a SOC II production grade platform for early customers. Ideally, this role becomes full time as part of the founding team presenting to investors later in the year. Must have an understanding and appetite for startups and working in an unstructured environment with a build mentality. Part time is an option for Sr. experienced engineers who have the capacity to execute rapidly due to their experience. Equity and salary will be discussed. Founder is in NY, NJ, but open to locations. Remote role.

  • Hourly: $40.00 - $85.00
  • Expert
  • Est. time: 3 to 6 months, 30+ hrs/week

We need to have a AI developer who is readily available on slack to fix any errors that may arise from our app and to do monthly check and updates. we want this to be long term and to be a partnership. Occasionally we may have a new project to work on as well.

Posted 3 weeks ago
  • Hourly
  • Expert
  • Est. time: More than 6 months, 30+ hrs/week

⭐ JOB AD: Full Stack Java Developer (Hybrid – NJ Office Required for Initial Paid Assessment) Location: Mountain Lakes, NJ (Initial in‑office assessment required) Type: Contract → Long‑Term / Hybrid Compensation: Competitive, based on experience and performance We are expanding our engineering team as we scale our Revenue Generation Engine (RGE) and Autonomous OS — advanced AI-driven systems powering multiple client platforms. We are seeking a Full Stack Java Developer who is comfortable working across modern backend and frontend stacks, and who can execute clean, efficient, and secure development workflows. This role begins with a paid, in‑office technical assessment at our private NJ development office. This is standard procedure due to the sensitive nature of our systems and the proprietary architecture we maintain. ⭐ What You’ll Do (Initial Assessment Project) The first assignment is a small, well‑defined technical task designed to evaluate your baseline competency with standard development tools and workflows: - Setting up and running a project locally - Working with GitHub repositories - Re-establishing deployment pipelines (e.g., Netlify or similar) - Ensuring clean builds and proper CI/CD functionality These are foundational skills expected of any experienced developer. Successful completion unlocks access to larger, ongoing AI and enterprise projects. ⭐ What We’re Looking For - Strong experience with Java, Spring Boot, REST APIs, Microservices - Solid understanding of React/Angular, modern front-end workflows - Comfort with GitHub, CI/CD, cloud deployments (Netlify, AWS, GCP, Azure) - Ability to work efficiently, follow structured processes, and deliver clean execution - Professionalism, reliability, and strong communication - Ability to work on-site for the initial assessment (required) - Availability for hybrid or remote work afterward (project-dependent) ⭐ Why Work With Us - We are scaling rapidly and onboarding multiple developers - You will work directly with our architecture and AI systems team - Opportunity to grow into long-term, high-impact roles - Exposure to cutting-edge AI automation and enterprise-level systems - Competitive compensation with performance-based advancement - A culture focused on speed, precision, and innovation ⭐ How to Apply Please send: - Your resume or LinkedIn profile - Your standard rate (hourly or fixed) - Your availability for the in‑office paid assessment in Mountain Lakes, NJ Office We are moving quickly and evaluating candidates on a rolling basis.

  • 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: $50.00 - $85.00
  • Intermediate
  • Est. time: More than 6 months, Less than 30 hrs/week

MUST BE LOCATED IN LAS VEGAS AREA OR TWIN CITIES. Repsetta is a fitness-focused startup seeking an experienced long-term Hybrid Mobile App Developer to join our team. We are looking for someone with a strong background in mobile app development, particularly in hybrid technologies. The ideal candidate will have experience with frameworks like React Native and Flutter, and be able to develop high-quality, user-friendly applications. This is a long-term position, offering a great opportunity to contribute to innovative projects in the fitness industry.

  • Fixed price
  • Expert
  • Est. budget: $100.00

We are looking for an experienced Mobile App Developer to help improve, fix, and enhance an existing Android and iOS mobile application. The ideal candidate should have strong experience with Flutter or React Native, mobile app debugging, crash fixing, UI/UX improvements, API integration, Firebase or backend connectivity, push notifications, performance optimization, and app store deployment. Responsibilities: Fix bugs and crashes in the existing mobile app Modify and enhance current app features Improve app performance, speed, and stability Update UI/UX screens where needed Integrate or fix APIs and third-party services Work with Firebase or backend services Test the app on Android and iOS devices Prepare and publish updates to the Google Play Store and Apple App Store. Requirements: Strong experience with Flutter or React Native Experience with Android and iOS app development. Ability to debug and fix crashes efficiently. Experience with API integration and Firebase/backend connectivity. Knowledge of push notifications App testing, bug fixing, and performance optimization skills. Experience publishing apps to Google Play Store and Apple App Store Please include in your proposal: Your portfolio or similar apps you have worked on Your experience with bug fixing and crash resolution Estimated timeline for completing fixes and enhancements Your availability to start We are looking for someone reliable, detail-oriented, and able to deliver clean, stable, and high-quality mobile app updates.

  • Fixed price
  • Expert
  • Est. budget: $1,500.00

*NO AGENCIES, Single Engineers Only* SeatWaves is a live ticket resale platform with a fully operational web version, complete Broker API, and TicketMaster API integration already in production. We are looking for a skilled mobile developer to finish the final leg of our iOS and Android app — not start from scratch. The previous development team completed approximately 88% of the mobile frontend UI. The Figma designs are finalized. The backend APIs are live. What we need now is someone to come in, understand the existing codebase quickly, wire everything together, and deliver a production-ready app. What's Already Done → Live web platform (full-featured, production-ready) → Broker API — fully built and operational → TicketMaster API — fully integrated → Figma UI/UX designs for iOS and Android — finalized and approved → iOS & Android frontend — ~88% complete (UI built, needs backend wiring) What Needs to Be Completed → Wire existing mobile frontend to live backend APIs (authentication, listings, checkout flows, broker inventory) → Integrate TicketNetwork API — inventory feed and seat availability → Implement interactive seat map API integration → Bot protection and rate limiting hardened for high-traffic onsale events → Queue integrity and load-resilience architecture for peak traffic → End-to-end QA testing on iOS and Android → Store-ready builds (App Store + Google Play submission prep) Why $1,500? We want to be transparent about the budget and why we feel it's fair for the right developer. The heavy lifting has already been done. The UI is built. The APIs exist. The designs are approved. This engagement is scoped specifically around integration, security hardening, and QA — not ground-up development. We estimate 3–5 weeks of focused work for an experienced React Native or Flutter developer who can hit the ground running. We are not paying for a full build — we are paying for a sharp finisher who can take 88% to 100% efficiently and cleanly. We're offering $1,500 fixed price for a clearly scoped, well-documented completion sprint. Applicants who try to reprice this into a full rebuild will not be considered. Who We're Looking For → Strong experience with React Native or Flutter (please specify) → Proven ability to inherit and work within existing codebases → Experience integrating third-party APIs (ticketing, payments, or marketplace preferred) → Familiarity with security best practices for high-traffic consumer apps → Clear communicator — we need daily async updates and weekly check-ins → Portfolio or GitHub showing mobile apps you've shipped, not just started To be considered, please include the following in your proposal: 1. A brief overview of a similar project you've completed (inherited codebase or API integration work preferred) 2. Your estimated timeline to complete the remaining scope 3. Your preferred framework (React Native or Flutter) and why 4. Any questions you have about the existing stack Generic proposals will be declined. We're looking for someone who has read this carefully and can speak specifically to the work at hand. READY TO FINISH SOMETHING REAL? The foundation is built. The designs are done. The APIs are live. We need a finisher — someone who delivers, not someone who starts over.

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