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Rating is 4.9 out of 5.
4.9/5
Based on 2,954 client reviews
Ruslana B.

Ahronomichne, Ukraine

$50/hr
5.0
4 jobs

15+ years of hands-on experience in Software Testing, Quality Assurance, Mobile App Testing, Web Testing, and Manual Testing. I’m a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester helping companies release stable, user-friendly Web & Mobile products with fewer production risks. 🏆 15+ YEARS IN QA | 3 PLATFORMS | 20 QA SKILLS | 7+ DOMAINS My experience covers iOS, Android & Web products across Hospitality, Entertainment, SportsTech, Booking, Loyalty, Gaming, and E-commerce. I have worked across 100% of the SDLC — from requirements analysis and software development to release and production support. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I combine Software QA, Quality Control, Manual Testing, and Software Quality Assurance to identify issues before release. 🚀 WHAT I BRING • 15+ years in Software Testing & Quality Assurance • 3 platforms: iOS, Android & Web • 7+ product domains • 20 core QA skills & 10+ testing types • Detailed Bug Tracking & Reports with screenshots & videos 📱 MOBILE APP TESTING I provide Mobile App Testing across iOS + Android, using Functional Testing, Regression Testing, Exploratory Testing, Usability Testing, Integration Testing, and User Acceptance Testing. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I test registration, authentication, onboarding, booking, payments, notifications, subscriptions, loyalty programs, and critical user flows. My mobile testing process combines Manual Testing, mobile app design validation, UX QA, Test Results & Analysis, and edge-case testing to identify issues that can affect real users. 🌐 WEB APPLICATION TESTING My web application testing covers 4 areas: browsers, operating systems, devices, and screen resolutions. I perform Web Testing and Cross Browser & Device Compatibility testing to validate navigation, forms, authentication, booking, payments, responsive design, integrations, and critical customer journeys. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I focus on both functionality and UX to make sure products behave consistently across different environments. 🔍 SOFTWARE QA & MANUAL TESTING With 15+ years in Software QA, I combine Quality Assurance, Manual Testing, Exploratory Testing, Quality Control, and UX QA with strong attention to detail. My experience covers the responsibilities of a software QA tester, QA tester, manual software tester, software tester, tester, quality assurance engineer, QA engineer, manual QA engineer, and Manual Quality Assurance specialist. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I support active software development, pre-release testing, production verification, and ongoing Product Stability. I collaborate with software engineers, software developers, product and design teams using Jira, requirements, checklists, test documentation, and a user manual when available. 🧪 API, INTEGRATION & PRODUCT TESTING My API Testing covers requests, responses, status codes, validation, error handling, and data exchange, while Integration Testing validates communication between APIs, backend services, mobile/web applications, and third-party systems. I also have experience with Game Testing, combining real-user scenarios with Test Results & Analysis to provide clear, actionable findings. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I select testing approaches based on product risks, release stage, business-critical functionality, and expected user behavior. I’m comfortable working in software development environments where tools such as Jest may be used by developers. ⚡ PRODUCT STABILITY & BUG REPORTING I focus on 5 key risks: crashes, broken critical flows, inconsistent states, data issues, and unexpected behavior. My Bug Tracking & Reports include reproduction steps, expected vs. actual results, environment details, severity, screenshots, videos, and actionable findings. Through Functional Testing, Regression Testing, Software QA Testing, and UX QA, I help teams improve technical quality and the overall user experience. For specialized products, I can also collaborate with subject-matter experts such as a QA Nurse while focusing on software quality and usability. As a Mobile App Tester | Web Testing | Software Testing | Manual QA Tester, I focus on 3 outcomes: Product Stability, User Experience & Release Confidence. 💬 LET'S WORK TOGETHER With 15+ years in QA, 3 platforms, 7+ domains, 10+ testing types & 20 QA skills, I help teams find critical issues earlier and release more stable products. I’m available for mobile app testing, web application testing, software QA testing, Manual Quality Assurance, pre-release QA, and ongoing product testing. 📩 Send me 3 things: what you're building, your product stage, and what you need tested.

  • Software Testing
  • Quality Assurance
  • Manual Testing
  • Mobile App Testing
  • iOS
  • Android
  • Web Testing
  • Functional Testing
  • Regression Testing
  • Exploratory Testing
  • Usability Testing
  • API Testing
  • Integration Testing
  • User Acceptance Testing
  • Software QA
  • Bug Tracking & Reports
  • Cross Browser & Device Compatibility
  • Test Results & Analysis
  • Game Testing
  • Product Stability
Kristina T.

San Diego, California

$75/hr
4.9
35 jobs

I design and build web and mobile apps from idea to launch. Nearly a decade in software development, 5+ years self-employed, and a track record of shipping real products to the App Store and Google Play. What I do: • Full-stack web development (Angular, and more) • Mobile app development (React Native, iOS and Android) • AI-powered features and integrations • UX, design, and the full build, all handled by one developer I take projects independently, end to end, which means clear ownership and a product shaped around what you and your users actually need. Whether you're starting from a blank page or improving something that exists, I'll help you ship it well.

  • CSS
  • Sass
  • PHP
  • SQL
  • JavaScript
  • HTML
  • jQuery
  • Angular 6
  • Sketch
  • Adobe XD
  • React Native
  • In-App Subscription
  • TypeScript
  • Firebase
Rami S.

Kuala Lumpur, Malaysia

$10/hr
4.8
54 jobs

Are you looking to build a high-performance SaaS platform, automate a complex supply chain, or integrate secure, production-ready AI into your business workflow? Many developers can write code, but very few understand how to seamlessly blend cutting-edge AI/ML systems with scalable, enterprise-grade architecture while ensuring strict data security (HIPAA, PCI-DSS). I am a Full-Stack Developer and AI/ML Engineer with extensive experience architecting end-to-end solutions for SaaS, Supply Chain, Healthcare (HIS/HMS), and custom ERP systems. Whether you need to build an MVP from scratch or scale an existing enterprise platform, I deliver clean, maintainable code and robust infrastructure. 🚀 Core Expertise & How I Can Help You: AI/ML & GenAI Integration: Building intelligent RAG systems, custom chatbots, and LLM-powered workflows using OpenAI, Anthropic, LangChain, and Vector Databases (Pinecone, Qdrant). Robust Backend & Architecture: Designing secure, high-throughput microservices and APIs using Node.js (NestJS), Python (FastAPI/Django), and PHP, backed by PostgreSQL, MongoDB, or Redis. Modern, Responsive Frontends: Crafting seamless web and mobile interfaces using React, Next.js, Angular, Vue.js, and React Native. Cloud, DevOps & Compliance: Deploying production-ready applications on AWS/GCP/Docker with CI/CD pipelines, keeping security and regulatory standards (HIPAA, GDPR) at the forefront. 🛠️ Technical Snapshot: Frontend: React, Next.js, Angular, Vue.js, React Native, Tailwind CSS Backend: Node.js (NestJS/Express), Python (FastAPI/Django), PHP, Java AI/ML: LLMs, LangChain, Vector DBs, Prompt Engineering, RAG Systems Cloud & Databases: AWS, GCP, Docker, Kubernetes, PostgreSQL, MySQL, MongoDB, Redis Let’s build something scalable. Click the "Invite to Job" or "Hire" button on the top right, and let’s discuss how we can bring your project to life.

  • React
  • Node.js
  • NestJS
  • Python
  • FastAPI
  • Angular
  • Artificial Intelligence
  • Generative AI
  • LangChain
  • Large Language Model
  • Vector Database
  • PostgreSQL
  • Amazon Web Services
  • Docker
  • REST API
  • SaaS Development
  • ERP Software
  • Supply Chain Management
  • Healthcare IT
  • HIPAA
Alexander Y.

Kiryat Ono, Israel

$100/hr
5.0
42 jobs

I help founders and product teams ship high-quality software quickly when the cost of sloppy delivery is too high. I am a senior full stack developer and hands-on software architect with 20 years of experience across SaaS, web, mobile, DevOps, databases, AI, and product engineering. I can lead a team, pair with your existing developers, or work entirely independently from elicitation through production delivery. I am strong at elicitation and continuous communication. I can take an unclear product goal, extract the real requirements, keep the feedback loop tight, and turn ambiguity into small testable decisions. My default way of working is XP: TDD, BDD, small releases, CI/CD, automated checks, and clear acceptance criteria. I use AI agents heavily inside that engineering loop. With agents, I can multiply my implementation speed many times while still keeping the work grounded in tests, specs, review gates, and evidence that the behavior is correct. Thousands of tests are no longer an enterprise luxury. With the right architecture and agent workflow, they are one of the fastest ways to keep delivery speed high. I work by the scientific method: identify the riskiest assumption, make it testable, run the smallest useful experiment, and let evidence drive the next step. The goal is production-ready software: maintainable code, real tests, deployment discipline, data safety, and behavior that can survive real users. A proof-of-concept is useful only when it proves the path toward that standard. Recent relevant work: - Software architect for an online fitness platform, with feature delivery and technical leadership for backend and web developers. - Public PostgreSQL tooling for schema diffing and migration parity. - XP-style CI/CD for a TypeScript MCP/reporting service, including tests, coverage, hardening checks, contract review, prompt/tool evaluation, deployment, and live verification. - Actor-based high-load architecture and media delivery/storage architecture work. - AI prompt evaluation and test harness work for healthcare SaaS. Good fit for: - fractional CTO / architecture review - TypeScript, Node.js, React, PostgreSQL - AI-assisted development with real tests and guardrails - legacy modernization, delivery stabilization, CI/CD, and testing strategy If you want fast software delivery with engineering discipline behind it, I can help.

  • Software Design
  • Architecture
  • Test-Driven Development
  • Distributed Computing
  • AI Agent Development
  • Automated Testing
  • SaaS
  • SaaS Development
  • TypeScript
  • PostgreSQL
  • PostgreSQL Programming
  • Technical Writing
  • Team Management
  • Software Architecture
  • Node.js
  • React
  • Next.js
  • DevOps
  • Continuous Integration
  • Cloudflare
Cenk Y.

Istanbul, Turkey

$25/hr
4.9
14 jobs

If your business has outgrown packaged software, I build what fits, custom, end-to-end solutions designed around your exact processes. Since 2006, I've delivered bespoke software across 8+ countries for clients ranging from global enterprises to funded startups. I currently maintain active support contracts with Vodafone and Philip Morris International, and have built and shipped products in logistics, fintech, agriculture, manufacturing, real estate, maritime, and SaaS. What I bring that most developers don't: — I've sat inside IT departments of large corporations, so I understand how decisions are actually made and what "production-ready" really means. — I've founded multiple software ventures of my own, so I understand the pressure of building something that has to work from day one. — I work across the full stack: mobile (Expo / React Native), web, desktop, backend APIs, cloud infrastructure (Azure, AWS), databases (MSSQL, Supabase, PostgreSQL), and third-party integrations (Stripe, open banking, ERP systems, barcode/IoT, and more). — I own physical iOS, Android, macOS, and Windows devices — every build is tested on real hardware. I work in structured weekly milestones with written updates, clear communication, and no surprises. My clients stay with me long-term because the work is done properly the first time. If you have a project that needs to be built right — not just built fast — I'd like to hear about it. Countries where I gained international experience: ● United States 🇺🇸 ● Australia 🇦🇺 ● Canada 🇨🇦 ● United Kingdom 🇬🇧 ● Chile 🇨🇱 ● China 🇭🇰 ● México 🇲🇽 ● Netherlands 🇳🇱 ● Turkey 🇹🇷 Development devices: - Dell XPS i7 16GB - Macbook Pro i7 32GB - Macbook Pro M1 16GB - Asus Thin Client Test PC - iPhone & iPad Devices - Android Devices - Zebra Barcode Scanner - DS2208 - Zebra Label Barcode Printer - ZD220 - Benq p50 Pocket PC Windows CE (Windows Mobile v5.0 and v6.5) Development Tool and Skills: ● C# / VB .NET / .NET Core / .NET Framework / Entity Framework / XAML / Blazor / LINQ / SQL / MVC / MVVVM / WinForms / WPF / UWP / Xamarin / MAUI / ASP.NET / WindowsCE Pocket PC / ZPL / XML / JSON / JS / AI / React Native / Expo / React ● Microsoft SQL Server / SQLite / PostgreSQL / MS Access / MS LocalDB ● Azure DevOps / AWS / Heroku / RESTful API / SOAP / Web Services / .NET Core Web API ● Docker / Postman / Git / TFS / SVN / GitHub / Jira / Trello / Microsoft Teams / Microsoft Dynamics / Visual Studio / Microsoft SQL Management Studio / Azure Data Studio / SAP ● DevExpress / Telerik / Syncfusion

  • Desktop Application
  • Standalone Application
  • SaaS Development
  • Mobile App Development
  • Web Application Development
  • Database Development
  • .NET Core
  • Industrial Automation
  • .NET Framework
  • Windows Presentation Foundation
  • Windows Forms
  • QR & Barcode Scanner
  • Back-End Development
  • MQTT
  • AI Development
  • React Native
  • Expo.io
  • Node.js
  • iOS
  • Android
Shelley C.

Kaiserslautern, RP

$28/hr
5.0
52 jobs

With over 30 years of experience drawing and rendering with 2020 software, I also render and draw with SketchUp, I seek remote work that keeps me involved in design trends and generates positive cash flow. * Accomplished designer utilizing 2020 Design renderings software. * Designer featured in 2020 Design user spotlight JAN 4, 2016 * 3 Designs featured on "Kitchen A La Tulsa" Tours * Designs published in Tulsa People Magazine, Tulsa People, October 2001 * Designs were published three times in Signature Kitchen Design and Bath, vol 3, nr 1, fall 2001, vol 9, nr 1, spring 2002, vol 14, nr 6, winter 2007. * Helped to create Jay Rambo Co.'s 2020 manufacturer's catalog. * Currently rendering illustrations for the 2020 company directly. The 2020 company uses my renderings in its marketing materials.

  • Rendering
  • Photorealistic Rendering
  • Computer
  • Expert
  • Interior Design
  • Interior Architecture
  • Interior Design Consultation
  • Interior Design Animation
  • Architecture & Interior Design
  • 3D Rendering
  • 2D Design
  • 3D Architectural Visualization
  • 3Design
  • 2D Design & Drawings
  • Art & Design

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Resources to help you hire

Software developer hiring guide

Software developers build the applications, systems, and digital products that power businesses across every industry. Hiring the right software developer gives you access to specialized skills in web development, mobile apps, cloud infrastructure, and more — helping you ship products faster and solve technical challenges with confidence. If you're launching a startup MVP or scaling an enterprise platform, the right developer can turn your requirements into working code.

What does a software developer do?

Software developers design, build, test, and maintain applications and systems that meet specific business or user needs. They work across a range of technologies and industries, from e-commerce platforms and healthcare tools to fintech products and internal business software.

Common responsibilities and specializations for software developers include:

  • Writing clean, maintainable code in languages such as Python, JavaScript, Java, C#, and Ruby
  • Building and maintaining back-end services, APIs, and databases that support application logic
  • Creating responsive, user-friendly front-end interfaces using frameworks like React, Angular, or Vue.js
  • Developing mobile applications for iOS and Android using Swift, Kotlin, or cross-platform tools like Flutter
  • Setting up cloud infrastructure and CI/CD pipelines on platforms such as AWS, Azure, or Google Cloud
  • Debugging, testing, and reviewing code to maintain quality and performance standards
  • Collaborating with product managers, designers, and QA engineers to deliver projects on schedule
  • Integrating third-party services, payment gateways, and data analytics tools into existing systems

How to hire a software developer on Upwork

Upwork gives you a direct path to experienced software developers who can start contributing to your project quickly. With built-in tools for posting jobs, evaluating candidates, and managing contracts, you can move from job post to working code in days.

Step 1: Post a job for a software developer

Start by creating a clear, detailed job post that describes your software development needs. A strong job post attracts qualified candidates and helps you filter out mismatches early.

  • Define the project scope, expected deliverables, timeline, and budget so candidates can assess fit
  • Specify whether you're building a new application, adding features, or maintaining an existing codebase
  • Note any APIs, third-party services, or databases the developer will integrate withSpecify the programming languages, frameworks, and tools your project requires (for example, Python, React, PostgreSQL, or AWS)
  • Indicate whether you'll provide technical documentation, wireframes, or design assets
  • Mention whether you need a front-end, back-end, or full-stack developer, and note any domain experience (fintech, healthcare, e-commerce) required
  • Review this software developer job description template to help structure your post

Use the Job Post Generator — powered by Uma™, Upwork's Mindful AI — to speed things up. Describe what you need in a few sentences, and Uma will draft a job post for software developers that you can review and customize. 

Step 2: Evaluate software developer candidates

Once proposals come in, review each candidate's profile to assess their technical strengths and project fit.

  • Look for experience with projects similar to yours in size, stack, and industry
  • Check GitHub repositories and portfolio projects for code quality, documentation, and relevant technologies
  • Review experience building applications with a similar architecture or scale
  • Look for examples of clean, maintainable code and well-documented projects
  • Confirm familiarity with your preferred cloud platform, CI/CD tools, or development environment
  • Read client reviews and Job Success Score to gauge reliability and communication skills

Uma can conduct instant video interviews and provide shortlists with side-by-side comparisons to help you evaluate candidates faster.

Step 3: Interview top software developer choices

Narrow your shortlist and set up interviews to dig deeper into each candidate's technical abilities and working style.

  • Ask about system design, debugging approaches, and how they handle code reviews
  • Discuss their experience with version control workflows, testing frameworks, and deployment processes
  • Ask how they estimate development effort and communicate project progress
  • Discuss how they identify, troubleshoot, and resolve production issues
  • Explore their approach to writing tests and maintaining code quality over time
  • Review these web developer interview questions for ideas to help prepare targeted questions for your project's tech stack

Schedule and conduct interviews within Upwork Messages, with an immediate transcript and summary after each call.

Step 4: Agree on scope and begin work with your software developer

Once you've selected a software developer, set clear expectations for the engagement in a contract before work begins.

  • Define milestones around sprint cycles, code deliverables, and deployment timelines so both sides know what success looks like
  • Define source code ownership, repository access, and branching strategy
  • Establish expectations for testing, documentation, and deployment before project completion
  • Clarify post-launch support, bug fixes, and maintenance responsibilities
  • Set up regular check-ins to review completed work, address blockers, and adjust priorities as the project evolves

Use Upwork's messaging and contract workroom to communicate, share files, and track progress in one place. Take advantage of identity verification, Hourly Payment Protection, hourly tracking, and project funds for a secure working relationship.

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 a software developer cost?

Software developer rates on Upwork range from $10 to $100 per hour, depending on project scope and required expertise. Expert developers may earn $150 or more per hour. 

Review this breakdown of typical project-based costs to help you estimate your software development budget.

Bug fixes and minor updates

$200-$1,500/project

Entry to intermediate
  • Resolving UI glitches or broken features
  • Updating dependencies and patching security issues
  • Small performance improvements

Custom web application

$3,000-$15,000/project

Intermediate to expert
  • Full-stack web app with user authentication
  • Database design and API development
  • Admin dashboard with reporting features

Mobile app development

$5,000-$25,000/project

Intermediate to expert
  • Native or cross-platform mobile app
  • Push notifications and in-app payments
  • App store submission and launch support

Full-stack platform build

$10,000-$50,000/project

Expert
  • End-to-end SaaS platform with multitenant architecture
  • Cloud deployment and CI/CD pipeline setup
  • Third-party integrations and payment processing

Ongoing development and maintenance

$3,000-$12,000/project

Intermediate to expert
  • Sprint-based feature development
  • Code reviews and technical debt reduction
  • Monitoring, scaling, and incident response

Frequently asked questions

Is hiring a software developer worth it?

Hiring a software developer is worth it when you need custom-built technology, faster product releases, or specialized skills your in-house team doesn't cover. Software development outsourcing has become a mainstream strategy for businesses looking to access specialized expertise, accelerate development, and control costs.

What do I do after I hire a software developer?

After hiring a software developer, share project documentation, grant access to relevant repositories and tools, and establish a communication cadence. Setting clear milestones and deadlines from the start helps your developer deliver on scope without delays.

How long does a software development project take?

Timelines for software development projects vary based on complexity. A small bug fix may take a few days, a custom web application can take four to 12 weeks, and full-stack platform builds often require three to six months or more.