Hire the Best On Demand Developers

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Rating is 4.8 out of 5.
4.8/5
Based on 121,316 client reviews
Kaushik D.

Kolkata, India

$18/hr
5.0
4 jobs

We have been a successful player in the online sector for about 12 years now. Our primary objective is to ensure optimum quality standards and maintain the team's level of performance as well. Our Content Development team is a staggering 9 years old, empowered by about 10 dedicated members, who are constantly trying their best to meet your needs. We aim to guarantee that you are delivered nothing short of the most user-friendly services. We are very flexible in terms of accepting any type of project. ➤ I provide my services to the following industries: ======================================= ✅ B2B. ✅ B2C ✅ Multi-Vendor Marketplace. ✅ On-Demand Service Provider. ✅ Real-Estate. ✅ Tours & Travel. ✅ Educational Based. ✅ Corporate Site. ✅ Classified Site. ✅ Job Recruitment Portal. ✅ Restaurant & Hotel Industry. ✅ Food Industry. ✅ Directory Listing ✅ Hotel Industry ➤ Web Design Tools: ================= ☛ Photoshop. ☛ Figma. ☛ illustrator. ☛ Sketch. ☛ InDesign. ☛ In-vision Tool. ➤ Front-End Technologies: ====================== ☛ HTML 5. ☛ CSS 3. ☛ Bootstrap 4. ☛ jQuery. ☛ React.JS ☛ Angular.JS ☛ Ajax. ☛ Vue.Js. ☛ Express.Js. ➤ Back- end Technologies: ===================== ☛ CorePHP/Custom PHP ☛ Laravel. ☛ CodeIgniter. ☛ Node.JS ☛ ASP.NET. ☛ WordPress. ☛ Magento. ☛ Shopify. ☛ C#, ☛ WooCommerce. I hope all the above-mentioned information will help you a lot to select us as your team. If you have anything on your mind, then feel free to connect with me. I would love to assist you with the best solution at a very affordable price. I look forward to building a mutually beneficial relationship with you. Best Regards

  • PHP
  • Laravel
  • Drupal
  • Mobile App Development
  • Web Design
  • ASP
  • WordPress
  • Search Engine Optimization
  • Web Development
  • Node.js
  • AngularJS
  • React
  • React Native
  • React VR
  • Magento 2
  • Magento
Valish D.

Ahmedabad, India

$25/hr
5.0
2 jobs

Most mobile apps look good in demos and fall apart in production. I have spent 10 years making sure that does not happen and the results speak for themselves. The last taxi booking app I shipped hit a 40% boost in user registrations after launch and holds a 4.7 star rating on the app store today. The restaurant ordering platform I built handles real time order tracking, multiple payment integrations and peak load traffic without a single breakdown. The fintech trading app I delivered runs encrypted transactions and live market data simultaneously across both iOS and Android. These are not prototypes. These are production apps that thousands of real users depend on every single day. I specialize in React Native mobile apps for on demand services, booking platforms, food delivery, fintech and real time tracking. I have worked with startups, enterprises and entrepreneurs across the US, UK, Europe, the Middle East and Asia and in every single one of those projects the goal was the same. Build something that works perfectly, looks great and keeps users coming back. Here is what I work with on every project: · React Native for cross platform iOS and Android development · Node.js and MongoDB for backend and API development · REST APIs and third party integrations including payment gateways · Real time features using WebSockets and live map integrations · AWS for cloud deployment and infrastructure · Redux and Context API for clean and scalable state management I work across the full mobile development cycle. I can take your idea from the very first conversation all the way to a live app on the App Store and Google Play. I understand every stage of that journey including the parts that most developers skip over like stress testing, edge case handling, performance under real user load and post launch stability. The types of apps I have built and shipped include: · On demand service apps with real time driver and user tracking · Food delivery and restaurant ordering platforms with live order status · Fintech and trading apps with encrypted transactions and real time market data · Taxi and ride booking apps with live map integrations and multiple payment options · Blockchain based applications with secure wallet integrations · Admin dashboards and backend panels connected to mobile apps · Browser based educational platforms with interactive game templates delivered on Upwork What separates the apps I build from the ones that fail six months after launch is what happens underneath the surface. The architecture decisions, the state management, the API design, the error handling, the load performance. I obsess over those details because I have seen what happens when someone does not and I refuse to ship work that I would not be proud of. My communication style is straightforward and consistent. You will always know what is done, what is in progress and what is next. No chasing me for updates, no surprises before a deadline and no excuses when something needs to be fixed. If you are building a React Native app from scratch or you need someone to come in and take an existing one to a level it has never been at before, send me a message. I would love to hear what you are building.

  • React Native
  • iOS Development
  • Android App Development
  • Flutter
  • Mobile App Development
  • Next.js
  • JavaScript
  • TypeScript
  • HTML5
  • CSS 3
  • Node.js
  • ExpressJS
  • Python
  • Django
  • MongoDB
  • MySQL
  • PostgreSQL
  • Amazon EC2
  • AWS Lambda
  • Vue.js
Abdulmojeed K.

Abeokuta, Nigeria

$25/hr
5.0
18 jobs

Leaving money on the table with a Shopify store that looks good but doesn't convert? I'm a Shopify developer with 3+ years of experience building and scaling e-commerce stores — but unlike most developers, I don't stop at "launched." I stay until your store actually sells. I combine three high-impact skills under one roof: 🛠 Shopify Development Custom store builds, theme development (Liquid, Dawn, OS 2.0), app integrations, speed optimization, and migrations. I build clean, scalable store foundations — no bloated code, no broken flows. 📈 Conversion Rate Optimization (CRO) I audit your store end-to-end — product pages, cart experience, checkout flow — and fix the friction points killing your sales. Most stores I work on have obvious revenue leaks hiding in plain sight. 📧 Email Marketing (Klaviyo) I set up automated flows that generate revenue on autopilot: welcome sequences, abandoned cart recovery, post-purchase upsells, and win-back campaigns. Email should be your highest ROI channel — I make sure it is. Results I've delivered: → Papilora Store Design and Optimization - Consistent Traffic over 2000+ Daily → The Bitcoin Diaries Store designs - Facebook ads conversion and retention and consistent sales on print-on-demand products. I work best with growing Shopify brands that want a long-term technical partner — not just someone to set things up and disappear. If that sounds like you, send me a message. I respond in less than 15 minutes.

  • Shopify
  • Shopify Development
  • Print-on-Demand
  • Shopify SEO
  • Liquid
  • Shopify Theme
  • Theme Customization
  • Shopify Website Redesign
  • Shopify Website Design
  • Printful
  • Set Up Shopify Site
  • Shopify Plus
  • Shopify Marketing
  • Landing Page Design
  • Conversion Rate Optimization
Elijah A.

Akure, Nigeria

$10/hr
5.0
7 jobs

Your product customizer is either helping you sell or quietly costing you sales. A preview that lags. A variant that breaks the configurator. A price that doesn't update. Each one is a customer who leaves without buying. On print-on-demand stores, where the customizer is your product page, this matters even more, because your customizer's performance directly determines whether someone converts or abandons the cart. 𝗜'𝗺 𝗘𝗹𝗶𝗷𝗮𝗵. 𝗜 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗲𝘅𝗰𝗹𝘂𝘀𝗶𝘃𝗲𝗹𝘆 𝗶𝗻 𝗳𝗶𝘅𝗶𝗻𝗴 𝗮𝗻𝗱 𝘀𝗲𝘁𝘁𝗶𝗻𝗴 𝘂𝗽 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝗰𝘂𝘀𝘁𝗼𝗺𝗶𝘇𝗲𝗿𝘀 𝗳𝗼𝗿 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗣𝗢𝗗 𝘀𝘁𝗼𝗿𝗲𝘀 𝘂𝘀𝗶𝗻𝗴 𝗭𝗮𝗸𝗲𝗸𝗲, 𝗞𝗶𝗰𝗸𝗳𝗹𝗶𝗽, 𝗖𝘂𝘀𝘁𝗼𝗺𝗶𝗹𝘆, 𝗮𝗻𝗱 𝗧𝗲𝗲𝗶𝗻𝗯𝗹𝘂𝗲. 𝗡𝗼𝘁 𝗴𝗲𝗻𝗲𝗿𝗮𝗹 𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁. 𝗡𝗼𝘁 𝘁𝗵𝗲𝗺𝗲 𝘁𝘄𝗲𝗮𝗸𝘀. 𝗖𝘂𝘀𝘁𝗼𝗺𝗶𝘇𝗲𝗿𝘀 𝗼𝗻𝗹𝘆. 𝗧𝗵𝗮𝘁 𝗳𝗼𝗰𝘂𝘀 𝗺𝗲𝗮𝗻𝘀 𝗜'𝘃𝗲 𝗵𝗮𝗻𝗱𝗹𝗲𝗱 𝘁𝗵𝗲 𝗲𝗱𝗴𝗲 𝗰𝗮𝘀𝗲𝘀 𝗺𝗼𝘀𝘁 𝗴𝗲𝗻𝗲𝗿𝗮𝗹𝗶𝘀𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝗻𝗲𝘃𝗲𝗿 𝘀𝗲𝗲: 𝘃𝗮𝗿𝗶𝗮𝗻𝘁 𝗰𝗼𝗻𝗳𝗹𝗶𝗰𝘁𝘀 𝘁𝗵𝗮𝘁 𝘀𝗶𝗹𝗲𝗻𝘁𝗹𝘆 𝗯𝗿𝗲𝗮𝗸 𝗮𝘁 𝗰𝗵𝗲𝗰𝗸𝗼𝘂𝘁, 𝘂𝗽𝗹𝗼𝗮𝗱 𝘇𝗼𝗻𝗲𝘀 𝘁𝗵𝗮𝘁 𝗿𝗲𝗷𝗲𝗰𝘁 𝘃𝗮𝗹𝗶𝗱 𝗳𝗶𝗹𝗲𝘀 𝗼𝗻 𝗺𝗼𝗯𝗶𝗹𝗲, 𝗱𝘆𝗻𝗮𝗺𝗶𝗰 𝗽𝗿𝗶𝗰𝗶𝗻𝗴 𝘁𝗵𝗮𝘁 𝗱𝗼𝗲𝘀𝗻'𝘁 𝗿𝗲𝗰𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗲 𝘄𝗵𝗲𝗻 𝗮 𝗰𝘂𝘀𝘁𝗼𝗺𝗲𝗿 𝗰𝗵𝗮𝗻𝗴𝗲𝘀 𝗮𝗻 𝗼𝗽𝘁𝗶𝗼𝗻 or 𝗽𝗿𝗲𝘃𝗶𝗲𝘄 𝗿𝗲𝗻𝗱𝗲𝗿𝗶𝗻𝗴. Here's what I do: 1. Customizer Audits: Know what's costing you sales A full diagnostic of your existing Zakeke, Kickflip, Customily, or Teeinblue setup. I review: i. Preview speed and rendering performance ii. Variant logic and conflict detection iii. Pricing accuracy and recalculation on option change iv. Upload zone reliability across devices (desktop, tablet, mobile) v. Mobile user experience and touch interactions Font, color, and material control responsiveness vi. Product base template configuration and scalability You get a clear, prioritized list of what's broken, why it's broken, and which fixes will impact sales most. Before you spend a dollar on fixes, you know exactly what's wrong. 2. Full Customizer Setup: Build it right from zero End-to-end configuration for POD and custom product stores: i. Variant mapping and conditional logic (so option A only shows when option B is selected) ii. Dynamic pricing rules (size, material, personalization add-ons) iii. Upload zones configured for reliability across devices Font, color, material, and design control setup iv. 2D and 3D live preview rendering v. Product base and blank template mapping for clean scaling Mobile optimization vi. Cart integration and checkout flow Built specifically for POD catalogs, apparel, mugs, tumblers, signage, jewelry, packaging not demo products. Tested against real variants before delivery. 3. Troubleshooting & Fixes: Resolve what's already broken i. Broken previews that don't render or lag on mobile ii. Pricing that won't update when customers change options iii. Variant combinations that crash the configurator iv. Upload zones rejecting valid files v. Product bases misconfigured so catalog scaling breaks at 50+ SKUs vi. Conditional logic that doesn't trigger correctly vii. Mobile behavior issues (touch responsiveness, layout shifts) 4. Product Base & Template Setup: Scale without breaking Correct mapping and upload of blank product templates so your customizer grows cleanly with your catalog. Most stores break at 50+ SKUs because product bases weren't set up to scale. I set them up so they do My process: Step 1: Audit: Review your current setup before I touch anything. You know exactly what's broken and why. Step 2: Plan: Map all variant logic, pricing dependencies, and conditional rules before building anything. No surprises. Step 3: Build: Configure and test against real product variants, not just the demo case. Everything works before you see it. Step 4: Support: l.e after delivery. If your catalog grows or something needs tweaking, I'm here. Proof: Set up live color preview and full customization structure across five products in Kickflip Resolved Customily configuration issues that were blocking a client's product launch Mapped and uploaded blank product bases for a multi-variant Customily POD catalog Delivered 5-star consistently "Elijah set up my store product customizer fast with real attention to detail, clear communication, smooth workflow, and great results." — Client review The reality: Most Shopify developers don't specialize in customizers. They treat it as a bolt-on feature. That's why so many POD stores have customizers that look good in the demo but break under real conditions or perform so poorly that customers abandon before they even finish designing. I've seen it hundreds of times. I specialize only in fixing it. Ready to know what's actually costing you sales? Send me a message with a link to your store or customizer. I'll take a first look before we talk about anything else- no pressure, no generic pitch. Just an honest assessment of what's working and what isn't.

  • Shopify Development
  • WooCommerce
  • Print-on-Demand
  • Shopify Apps
  • Online Store Customization
  • Website Customization
  • Shopify Theme
  • Ecommerce Store Setup
  • Set Up Shopify Site
  • Shopify
  • Shopify Website Design
  • Shopify Website Redesign
  • Ecommerce Website
  • Printful
  • Shopify SEO
  • Ecommerce SEO
  • Ecommerce SEO Audit
  • Print Design
Md Rasel A.

Petaling Jaya, Malaysia

$8/hr
5.0
85 jobs

Shopify Developer and WooCommerce Expert helping eCommerce brands build fast, conversion-focused, and scalable online stores. With 7+ years of experience in Shopify, WooCommerce, WordPress, and eCommerce optimization, I help businesses create online stores that not only look professional but also perform smoothly, load fast, and support long-term growth. If you’re looking for someone who can properly build, optimize, or manage your eCommerce store — not just make it “look good” — you’re in the right place. Over the years, I’ve worked with startups, growing brands, and long-term store owners to launch new stores, improve existing ones, fix technical issues, and optimize overall store performance. I pay close attention to the details many developers overlook, including site speed, mobile responsiveness, clean structure, user experience, and reliability. Whether you're starting from scratch or improving an existing store, my goal is to build an eCommerce solution you can confidently grow your business with. What I can help you with: • Shopify & WooCommerce Store Development • Shopify Theme Customization • WooCommerce Customization • WordPress eCommerce Development • Store Setup & Configuration • Bug Fixes & Technical Troubleshooting • Checkout & Payment Gateway Issues • Speed Optimization & Performance Improvements • Mobile Optimization & Responsive Design • App, Plugin & Third-Party Integrations • Store Migration & Website Transfer • Hosting, DNS & SSL Configuration • Basic Store Security & Maintenance • eCommerce Store Management & Support Why clients enjoy working with me: • Clear and honest communication • Reliable updates and timely responses • Strong attention to detail • Business-focused problem solving • Long-term support mindset • Clean, scalable, and dependable work I also hold an MBA, and I’m currently completing a Master’s in Information Technology, which helps me approach projects with both technical knowledge and business understanding — focusing not just on development, but on practical results and long-term growth. My approach is simple: I listen carefully, understand your goals, and build solutions that genuinely fit your business. No unnecessary complexity. No confusion. Just reliable eCommerce development and support you can depend on. If you’re looking for a dependable Shopify and WooCommerce developer for long-term collaboration, I’d be happy to help. 📩 Send me a message and let’s discuss your project. Thank you, Rasel

  • Shopify
  • Shopify Development
  • Shopify Theme
  • WooCommerce
  • WordPress
  • Ecommerce Website Development
  • Shopify SEO
  • Elementor
  • Page Speed Optimization
  • Conversion Rate Optimization
  • Website Optimization
  • Responsive Design
  • Store Management
  • On-Page SEO
  • Shopify Website Design
  • Shopify Website Redesign
  • Next.js
  • Ecwid
  • Strapi
  • NestJS
Fawad A.

Lahore, Pakistan

$25/hr
5.0
14 jobs

React Native & Expo developer (iOS & Android) with 5+ years shipping production mobile apps live right now on the App Store and Google Play. Top Rated, 100% Job Success, known for clean, tested, on-time delivery. I build React Native apps end to end from scratch or step into your existing codebase to add features, polish the UI, and fix bugs without breaking what already works. My specialty: taking founder-built or AI-built apps through the last 20% from "almost working" to approved, published, and stable on both stores. Mobile apps I've built and shipped: ▪ Mooner: services-on-demand marketplace with real-time postings, geolocation, and negotiable pricing. Live on App Store & Google Play. ▪ A'men: official UAE Media Council app connecting government and the public. Delivered in 10 days. Live on both stores. ▪ GeoFace: patented app that verifies physical presence via geolocation, timestamps, and image authentication. Live on the App Store. What I can do for you: ▪ React Native iOS & Android apps (Expo and bare workflow) EAS Build, TestFlight, OTA updates ▪ App Store & Google Play submission, signing, and release management ▪ Authentication (Apple/Google Sign-In, Supabase, OAuth/JWT) and subscriptions (RevenueCat) ▪ Payments (Stripe, PayPal) and third-party integrations ▪ Real-time features (Socket io), maps and geolocation (Google Maps) ▪ AI-powered features (OpenAI, Claude, Gemini, RAG, vector search) ▪ Full-stack backends for mobile apps (Node.js, NestJS, PostgreSQL, Supabase, Firebase) My stack Mobile: React Native, Expo · Frontend: React, Next.js, TypeScript, Tailwind CSS · Backend: Node.js, Express, NestJS · APIs: REST, GraphQL, tRPC · Database: PostgreSQL, MongoDB, Prisma · Cloud: AWS, Docker, Firebase Why clients keep working with me: I own the full lifecycle planning, coding, testing, deployment, and support and I verify every fix before I call it done. Daily written updates, replies within a few hours, honest timelines. Let's ship your app message me and I'll reply within a few hours.

  • Mobile App Development
  • React Native
  • iOS Development
  • Android App Development
  • React
  • TypeScript
  • JavaScript
  • Node.js
  • Firebase
  • Next.js
  • Socket.io
  • Google Maps
  • API Integration
  • Third-Party Integration
  • Expo.io
  • Supabase
  • Stripe

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Don't just take our word for it

What does an On Demand developer do?

An on demand developer builds and ships specific software features or complete applications for short-term projects without joining a company as a full-time employee. These engineers focus on defined workstreams such as mobile apps, full-stack services, or minimum viable products to move ideas into production quickly. They write code, integrate external systems, and test performance to guarantee the software works reliably for end users before launch.

  • Construct live mobile applications for iOS and Android using frameworks like React Native, ensuring the interface responds correctly to user inputs and device constraints. Connect these front-end interfaces to backend services through REST APIs so data flows accurately between the user’s device and the server database.
  • Develop backend logic and admin dashboards that manage core business operations, such as processing payments through third-party gateways or tracking user activity. Write clean, maintainable code in environments like Node.js and store structured data in databases such as MongoDB to support scalable growth as user numbers increase.
  • Implement real-time features like live map updates or chat functions using WebSockets, allowing multiple users to see changes instantly without refreshing the page. Run stress tests and edge-case scenarios to identify bottlenecks or crashes under heavy load, then fix these issues to maintain stability during peak usage times.

How to hire an On Demand developer on Upwork

Step 1: Post a job

Define your software scope clearly to attract developers who build live apps and backend services. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft your listing. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.

  • Specify required frameworks such as React Native or Node.js to filter for relevant technical experience.
  • List deliverables like REST APIs or mobile applications so candidates understand the exact output.
  • Include integration requirements for third-party services like payment gateways to clarify complexity.

Step 2: Evaluate candidates

Review portfolios for shipped products that match your project type. Uma can run instant video interviews and build shortlists with side-by-side comparisons to speed up selection.

  • Check for live mobile applications on iOS or Android to verify production readiness.
  • Look for backend panels or admin dashboards that demonstrate full-stack capability.
  • Confirm experience with AWS deployment to ensure they manage infrastructure correctly.

Step 3: Interview your top choices

Discuss technical approaches for real-time features and edge-case handling. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.

  • Ask how they implement WebSockets for live data updates in previous projects.
  • Request examples of stress testing methods used to guarantee app stability.
  • Verify their process for integrating complex third-party APIs without breaking existing code.

Step 4: Agree on scope and begin work

Set clear milestones for building MVPs or scaling SaaS platforms. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.

  • Define specific deliverables such as shipping a live app or compiling release artifacts.
  • Establish performance benchmarks for response times and error rates before launch.
  • Agree on a timeline for ongoing stability improvements and post-launch support tasks.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring an On Demand developer cost?

$500-$2,500 per project is a typical range for focused On Demand developer work. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

Bug fixes and patches

$500-$1,200/project

Entry-level to mid-level
  • Analysis of existing codebase to identify errors
  • Corrected code for identified bugs
  • Testing to confirm issue resolution

API integration

$1,200-$3,000/project

Mid-level
  • Configuration of REST APIs or payment gateways
  • Structured data flow between systems
  • Verification of successful data exchange

Mobile app features

$3,000-$6,000/project

Mid-level to senior-level
  • New functionality using React Native or similar tools
  • Responsive interface components for iOS or Android
  • Performance checks on target devices

Backend service development

$6,000-$10,000/project

Senior-level
  • Node.js or similar backend architecture
  • Structured data storage using MongoDB or SQL
  • Authentication and data protection measures

Full-stack MVP launch

$10,000-$20,000/project

Expert-level
  • Complete SaaS platform or mobile application
  • Infrastructure setup on AWS or similar providers
  • Stress testing and initial production monitoring

Frequently asked questions

Is hiring an On Demand developer worth it?

For most businesses, yes: hiring an On Demand developer is worthwhile. You gain access to specialized engineering skills for specific projects without the overhead of full-time employment. This model lets you scale your team up or down based on immediate product needs.

How do I evaluate On Demand developer candidates?

Review their portfolio for live mobile applications or SaaS platforms they have built from idea to launch. Ask candidates to explain how they handled edge-case testing or integrated complex REST APIs in previous projects.

What types of projects can an On Demand developer build?

An On Demand developer builds live mobile apps for iOS and Android, backend services, and admin dashboards. They also develop MVPs and integrate third-party services like payment gateways into existing systems.

Which tools do On Demand developers use?

These developers often work with React Native, Node.js, and MongoDB to build scalable applications. They deploy infrastructure on AWS and use WebSockets for real-time features like live map integrations.