- Hourly: $60.00 - $100.00
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
# Overview We're a healthcare analytics company with an internal web portal (built in **Next.js 16 / React 19 / TypeScript / Tailwind CSS v4**) that embeds Power BI reports for our partners. The app works, but it was built quickly and needs to be brought up to a **production-quality standard**. It's a small, focused codebase (~2,400 lines), so this is a high-impact, well-scoped engagement — not a sprawling legacy rescue. We're looking for a senior frontend engineer to either **refactor the existingcode or rebuild it from a clean foundation** (your call — we want your recommendation), and to leave us with a maintainable, tested, polished application. # What you'll be working on A single Next.js App Router application that: - Renders a landing/navigation experience and a set of dashboard pages. - Embeds Power BI reports via `powerbi-client-react` ("App Owns Data"). - Reads a small amount of data from Postgres for user settings. **Authentication is fully handled upstream (SSO) and is OUT OF SCOPE.** You will never need credentials, secrets, or access to our production environment. (See "How we work" below.) # Scope of work 1. **Code quality & structure** — Establish a clean, consistent architecture: sensible component structure, strict TypeScript, and tooling (ESLint + Prettier). The repo currently has no linting or formatting setup. 2. **Testing & CI** — Add a testing setup (unit + a few integration/e2e tests for critical paths) and GitHub Actions CI gates (lint, typecheck, test on PR). There are currently **no tests** — establishing this foundation is a core deliverable. 3. **UI / UX polish** — Implement to our provided design direction: responsive layout, proper loading/error/empty states, and a polished feel around the (heavy) Power BI embeds. **We will provide the design/branding** — you implement it well, you don't need to invent the visual identity. 4. **Recommendation up front** — In an early milestone, give us a short written assessment: refactor vs. rebuild, and your proposed approach. **Out of scope:** authentication/SSO, SEO (the app is private and login-gated), backend/Power BI infrastructure, and anything touching production data. # Required skills - Deep, demonstrable experience with **Next.js (App Router)**, **React 19**, and **TypeScript** (strict mode). - **Tailwind CSS** proficiency and a strong eye for implementing designs faithfully. - Experience setting up **testing (e.g. Vitest/Jest + Playwright)** and **CI pipelines (GitHub Actions)** for frontend apps. - A track record of taking quick-build apps to **maintainable, production-grade** quality. ### Nice to have - Prior **Power BI embedding** experience (`powerbi-client-react`, "App Owns Data") - Accessibility (WCAG AA) and frontend performance optimization experience. # How we work (please read) - We operate in a regulated healthcare environment. You will work against a **sanitized copy of the repository** — no real report IDs, secrets, customer data, or production access. All data is mock/synthetic. - **Hourly engagement** via Upwork's tracker, with a cap. We estimate **~40–100 hours**; we'll set a weekly cap and review progress in milestones. - We value clear communication, small reviewable PRs, and your honest technical judgment over just "doing what's asked."
- Fixed price
- Intermediate
- Est. budget: $750.00
I already have the backend up and running, as well as an AI generated front end. I want to take my frontend design to the next level, which I just can't seem to get AI to do. I am absolutely horrible and also have 0 interest in designing things. What I need from you: - Take my rough draft generated by AI and turn it into something way better, including all functionality that AI has already introduced, just looking way, way better. - Backend is already done. You're just responsible for making the design look good. - If you have backend experience, this could become very lucrative for you. While I am a hobby developer, I am not an expert. At some point, I will need/want someone to go over everything I've done, to make sure it is acceptable/secure. The site is overall rather simple as far as design goes. That's actually one of my selling points. The workflow is as follows: Visit mainpage... - From mainpage you have following options: --- Upload file as guest/registered, public or private --- About & ToS page --- Control Panel page --- Logout Not sure what else to include. If you need further information, feel free to reach out! That's about it! Look forward to hearing from you.
- Fixed price
- Expert
- Est. budget: $2,500.00
We're seeking an experienced developer or agency to create a premium, modern website for a subscription-based platform. The project involves integrating AI technologies with Next.js to enhance user experience. The ideal candidate will have a strong background in web development and a keen eye for design.
- Hourly
- Intermediate
- Est. time: More than 6 months, 30+ hrs/week
I'm looking for a skilled developer who can move fast, think creatively, and act more like a partner than a contractor. If you're someone who builds things quickly, brings ideas to the table without being asked, and genuinely cares about creating great experiences for end users, keep reading. -—————- **What You'll Be Working On:** This product sits at the intersection of AI, data, and customer experience. At its core, it needs to: - Monitor and process large volumes of data** in or near real time — surfacing insights, anomalies, and patterns that matter. - Send automated personalized outreach via SMS and email — based on the data signals and triggers, the system should be able to generate and send personalized messages to the right person at the right time, without manual intervention - Integrate with POS systems and CRMs** — pulling, syncing, and acting on data across platforms - Deliver a seamless, intuitive customer-facing experience** — this isn't just a backend tool, how users feel when they interact with it matters enormously - Be built on top of **Claude (Anthropic's AI)** using **Claude Code** as a core part of the development workflow We're in early stages, which means we're figuring things out as we go. That's not a warning — it's an opportunity for the right person. --- **What I'm Looking For:** - Hands-on Claude Code experience** — you've actually built with it, not just read about it. Experts only please - CRM and POS integration experience** — you've connected to platforms like Salesforce, HubSpot, Square, Toast, Lightspeed, or similar, and you know the quirks - Data monitoring and pipeline experience** — you've built systems that ingest, process, and surface meaningful signals from large datasets - Customer experience mindset** — you think about the end user constantly, and you've built tools that real customers interact with - Fast builder, fast thinker** — you're comfortable with ambiguity, can ship quickly, and know how to iterate without everything being perfectly defined upfront - Collaborative and opinionated** — I want someone who pushes back, brings ideas, and helps shape where this goes — not someone waiting for a spec I also want to **learn as we build** — so being able to explain what you're doing and why, in plain terms, is important to me. --- A Note Before You Apply: Please only submit a proposal if you have deep, hands-on experience with Claude Code — not surface-level familiarity, not currently learning it. We're looking for someone who has already put in the reps, knows the ins and outs, and can hit the ground running from day one. We respect your time and ask that you respect ours. If Claude Code isn't already a tool you've mastered, this isn't the right fit. **When You Apply, Please Include:** - Specific examples of tools you've built that involve **CRM or POS integrations** — name the platforms and describe what you built - Examples of **data monitoring or real-time data tools** you've worked on — what did it track, how did it work, what was the scale? - Any **AI-powered products** you've shipped, especially using Claude or other LLM APIs — links, screenshots, or descriptions - How you approach building something when the full picture isn't defined yet - A thought or two on what makes a truly great AI-powered customer experience — I want to see how you think --- **What This Could Become:** This is the beginning of something bigger. The right person won't just be a hire — they'll grow with the product. There's real potential for a long-term working relationship as this evolves.
- Hourly
- Intermediate
- Est. time: 3 to 6 months, Less than 30 hrs/week
Backend development support connecting a web application’s API to Stripe for usage-based billing. Scope includes configuring API authentication, setting up Stripe checkout for paid access tiers, and testing the payment-to-access flow
- Hourly: $50.00 - $67.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
We're hiring 2 experienced developers to build AIOS deployments for our growing client base. FluentOS is a 9-person team that builds AIOS (AI operating systems) that connect a business's existing platforms together and run AI agents on top of them. We're onboarding 6–7 new client projects every week and need two more builders who can take a project and deliver it. The industries we work in: We deploy across a wide range of professional and service businesses, so you'll get variety: - Financial services & wealth advisory - Tax & accounting firms - Dental and medical practices - Home services & roofing - Property management Each client runs on a different stack — CRMs, comms tools, scheduling, payment systems, document and data sources — and our job is to unify those into one system and build agents that operate across them (lead response, follow-up, reporting, document workflows, estimating, intake, and more). What you'd be building: - AIOS deployments end to end — integrating client platforms via their APIs - AI agents that read/write across those connected systems - Reliable, production-grade automations that real businesses depend on daily What we're looking for: - Proven delivery experience — you've shipped projects clients actually use, not just personal experiments - Strong coding background (Python and/or TypeScript); comfortable with API integrations and agent frameworks - Experience with LLM/agent development (Anthropic/Claude, tool use, multi-step agents) is a big plus - Fast, organized, and communicative — we move quickly and build as a team, not in isolation - Able to work closely with Ray, our lead developer, who'll get you ramped into live projects The setup: - 1099 contract, paid per project — not salaried - Steady, scalable volume (6–7 new projects/week) means consistent work for builders who deliver - Strong potential for ongoing, long-term collaboration as we scale To apply: Tell us briefly about a real project you've built and delivered — ideally something involving API integrations, automation, or AI agents. Include links to work or repos if you have them. Please start your reply with the word "FLUENT" so we know you read this. We'll be scheduling interviews shortly.
- Hourly: $50.00 - $75.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
We need a developer to analyze, repair, and optimize our SaaS platform. The work includes reviewing the codebase, identifying issues, and improving performance and reliability. You should be comfortable working with both front-end and back-end components and have experience supporting cloud-based applications. This is a part-time project for someone who can help ensure the platform runs smoothly and efficiently.
- Hourly: $100.00 - $120.00
- Expert
- Est. time: Less than 1 month, Less than 30 hrs/week
Overview I have a Next.js website with a newsletter signup form that currently submits directly from the browser to HubSpot's Forms v3 endpoint. I want to add a lightweight LLM-based spam filter that inspects each submission *before* it reaches HubSpot, and silently rejects (or flags) anything that looks like spam/bot/junk input. Current setup - Framework: Next.js (App Router, TypeScript, React client component) - The form component (`NewsletterForm.tsx`) POSTs directly to `https://api.hsforms.com/submissions/v3/integration/submit/[portalId]/[formGuid]` - Fields collected: `firstname`, `lastname` (optional), `jobtitle`, `email` - Portal ID and Form GUID are public form identifiers (no secrets today) What I want you to build 1. Create a server-side API route in the Next.js app (e.g. `app/api/subscribe/route.ts`) that: - Receives the form fields from the client - Runs an LLM spam/quality check (e.g. OpenAI or similar) to classify the submission as legit vs. spam — checking for gibberish names, fake/disposable emails, nonsense job titles, injection attempts, etc. - If legit → forwards the submission to HubSpot (server-side) - If spam → rejects gracefully with a generic message (no HubSpot write) 2. Update the existing `NewsletterForm.tsx` to POST to the new internal API route instead of calling HubSpot directly. 3. Keep the LLM API key server-side only (use an environment variable — never expose it to the client). 4. Preserve the existing UX: loading / success / error states should still work. Deliverables - Working API route with the LLM spam check + HubSpot forwarding - Updated form component - Brief note on which env vars to set (`OPENAI_API_KEY`, etc.) and how to configure them - Clean, typed TypeScript that matches the existing code style Nice to have (optional) - Basic rate limiting / honeypot field as a cheap first line of defense before the LLM call - Configurable spam threshold or a logged "reason" when something is rejected Requirements to apply - Strong Next.js App Router + TypeScript experience - Experience calling an LLM API (OpenAI or equivalent) from a server route - Familiarity with HubSpot Forms API is a plus To apply, please briefly answer: 1. Which LLM/provider would you use and roughly what would it cost per submission? 2. How would you handle the case where the LLM API is slow or down — do you fail open (let it through) or fail closed (block it)? 3. Have you integrated with HubSpot Forms before? (yes/no is fine)
- Fixed price
- Intermediate
- Est. budget: $500.00
We are seeking a skilled web developer to create a website focused on collecting data regarding violations, unethical treatment, and illegal conduct faced by dealers at auto auctions in the USA. The website will serve as a platform for users to report incidents, share experiences, and contribute to a database of information. The ideal candidate should have experience in building user-friendly interfaces, database management, and data security. Your expertise will help us bring awareness to these issues and support the dealer community.
- Hourly: $39.00 - $70.00
- Entry Level
- Est. time: 1 to 3 months, Less than 30 hrs/week
We are seeking an innovative and user-focused Front-End Developer to play a pivotal role in the development of modern web applications designed to enhance collaboration, automate essential business processes, and streamline daily operations across the organization. Your expertise will be instrumental in crafting responsive, high-performance user interfaces that empower employees, customers, and business partners to interact seamlessly and efficiently with our digital platforms. As a Front-End Developer, your primary responsibility will be to design and implement feature-rich web applications that serve a variety of functions, including customer self-service portals, internal collaboration systems, workflow automation tools, document management platforms, approval processes, scheduling systems, and a range of business productivity solutions. To achieve this, you will focus on delivering intuitive user experiences that aim to reduce complexity, enhance accessibility, and promote user adoption across multiple business functions. Furthermore, this position is ideally suited for developers who possess a passion for creating polished and engaging user experiences while tackling complex workflow challenges through the use of modern front-end technologies. You will have the opportunity to stay on the cutting edge of industry trends, leveraging frameworks and tools that promote best practices in web development. Your contributions will not only enhance the functionality of our systems but also create a lasting impact on how our organization operates and interacts with its stakeholders. Required Skills and Qualifications: - Extensive experience with modern frontend frameworks such as React, Vue.js, Angular, or similar. - Proficiency in JavaScript (ES6+), TypeScript, HTML5, and CSS3. - Experience in building responsive and accessible web applications. - Strong understanding of REST APIs and asynchronous data handling. - Familiarity with Git and collaborative development workflows. - Knowledge of front-end build tools and package managers. - Strong skills in debugging, troubleshooting, and performance optimization. - Excellent communication, collaboration, and problem-solving abilities.