Hire the Best Software Developers

Clients rate our Software Developers
Rating is 4.8 out of 5.
4.8/5
Based on 2,264 client reviews
Andrei R.

Sibiu, Romania

$10/hr
5.0
3 jobs

I have over 6 years of experience as a Manual QA Tester, working on web and mobile applications for an international client in Germany. My daily work includes functional, regression, exploratory, and usability testing, creating detailed bug reports in Azure DevOps, and collaborating closely with developers to ensure high-quality releases. Beyond finding bugs, I always evaluate whether a feature makes sense from the user's perspective. I enjoy identifying confusing workflows, UX inconsistencies, and opportunities to improve the overall user experience.

  • Software Testing
  • Quality Assurance
  • Software QA
  • Test Results & Analysis
  • Test Scenario
  • Test Strategy
  • Azure DevOps
  • Bug Tracking & Reports
Dalton C.

Santo Domingo, Dominican Republic

$20/hr
5.0
34 jobs

Hello! I’m Dalton Cabrera, a Full Stack Software Developer with over 8 years of experience. I work on web, desktop, and mobile projects, helping businesses create useful software. My Skills: Full-Stack Development: I can handle both frontend (Vue.js, AngularJS, Bootstrap) and backend (ASP.NET Core, Laravel, Web API), plus mobile apps with Flutter. Technical Knowledge: Languages: C#, SQL, PHP, JavaScript, HTML/CSS Frameworks and Libraries: ASP.NET, ASP.NET MVC, Entity Framework, Laravel , WinForms Tools: Docker, MySQL, Git, jQuery Reliable: I always meet deadlines and communicate clearly to ensure your project is a success. Why Work With Me? I am easy to work with and understand what clients need. I can help you with a custom web app, a mobile app, or improving your current system. I aim to meet and exceed your expectations. Let’s talk about your project. I’m excited to work together and achieve great results. Best regards, Dalton Cabrera

  • AngularJS
  • Bootstrap
  • jQuery
  • ASP.NET
  • WordPress
  • C#
  • SQL
  • PHP
  • ASP.NET MVC
  • Flutter
  • Mobile App
  • Laravel
  • Vue.js
Orest A.

Overland Park, Kansas

$49/hr
4.9
686 jobs

You need software that solves a real problem, built right the first time, by people who understand your business and not just your stack. I'm Orest, founder of SoftDoes. We're a U.S.-based custom software firm working with: • Non-technical founders with a vision • Technical leaders who need help but not additional headcount • Business operators solving operational complexity Our team has delivered across healthcare, fintech, construction, legal, real estate, and regulated industries where compliance-readiness is required and getting it wrong isn't an option. Our clients tend to show up in one of three situations: they have a product vision and need someone to build it, they have internal engineering that's stretched too thin, or they have operational complexity that off-the-shelf software simply can't fix. We've handled all three. What we deliver: • Custom software and SaaS platforms built for scale • AI implementation and automation built into real workflows • Web and mobile applications • Cloud infrastructure on AWS, GCP, and Azure • Full-stack development across React, Next.js, Node.js, and Python What clients tell us, consistently: we listened, we delivered what we said we would, and they didn't have to babysit us to get there. A healthcare founder went from concept to a live, compliant product in under six weeks. A construction company replaced five fragmented tools with one custom operations platform. A fintech team cut onboarding time in half with an AI-assisted workflow we built in a single sprint. We work best with companies that are big enough to need real software and clear-eyed enough to know that building it wrong the first time costs more than doing it right. If that's where you are, let's talk. 🇺🇸 U.S.-based. U.S.-led. Kansas City, MO. Services: Custom software development SaaS development Enterprise software Web application development Mobile app development Full-stack development Product development / MVP build Platform modernization / rebuild Systems integration Workflow automation Business process automation API development / API integration Backend development Frontend development AI development AI integration AI automation LLM integration RAG (Retrieval-Augmented Generation) AI chatbot development Document AI AI-powered workflows Prompt engineering AI agents Data extraction automation React Next.js Node.js Python TypeScript JavaScript REST APIs GraphQL PostgreSQL AWS Google Cloud (GCP) Microsoft Azure Vercel Docker Terraform CI/CD Cloud / DevOps keywords Cloud architecture Infrastructure as code DevOps Deployment automation Scalability / performance optimization Reliability engineering Monitoring / observability HIPAA compliance / healthcare software PCI / fintech software SOC 2 readiness (if applicable) Security best practices Compliance-ready systems Audit-friendly systems Role-based access control (RBAC) Operations platform Internal tools CRM/ERP custom build Data pipelines Dashboards & reporting Process digitization Tool consolidation Onboarding automation

  • Software Development
  • Desktop Application
  • Web Design
  • Web Development
  • Front-End Development
  • Back-End Development
  • Artificial Intelligence
  • Computer Vision
  • Machine Learning Model
  • Node.js
  • Amazon Web Services
  • Python
  • DevOps
  • CSS
  • HTML
  • JavaScript
  • React
  • API Integration
  • Full-Stack Development
  • API
Sebastian B.

Iasi, Romania

$40/hr
5.0
10 jobs

AI Engineering Lead and PhD researcher in AI/ML, certified in Claude by Anthropic. I design and ship production systems built around Claude: agents, RAG pipelines, and automations that actually make it to deployment Over the past 7 years I've helped more than 20 companies put AI into production across the US, Europe, and the Middle East. I've led engineering teams at startups large and small, and I bring a consistent track record as a high performer on the work I take on I post regularly on Medium, X, and YouTube on the latest in AI, ML, and tech, which keeps me on top of how fast the field moves, with an audience of over 10,000 across platforms. I share this work publicly partly because teaching a thing is the best test of whether you understand it What I build: - RAG chatbots and agents over your documents, PDFs, Notion, and knowledge bases - LLM fine-tuning on your domain data - Workflow automations that replace 40–80% of manual operations - Solution architecture, so you commit to the right stack the first time - Recovery work on stalled or underperforming AI projects Send over the project and I'll reply the same day with a plan, a clarifying question, or an honest pass

  • Desktop Application
  • Artificial Intelligence
  • Mobile App
  • App Development
  • Machine Learning
  • AI Agent Development
  • AI Audio Generation
  • AI App Development
  • AI Audio Generator
  • AI Bot
  • AI Chatbot
  • Python
  • LangChain
  • LLM Prompt Engineering
  • MLOps
Vitaly B.

Navodari, Romania

$16/hr
5.0
81 jobs

✔ 𝗜 𝗵𝗲𝗹𝗽 𝘀𝗺𝗮𝗹𝗹 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝗽𝗿𝗲𝘃𝗲𝗻𝘁 𝗰𝗼𝘀𝘁𝗹𝘆 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗶𝘀𝘀𝘂𝗲𝘀 𝗮𝗻𝗱 𝗶𝗻𝗰𝗿𝗲𝗮𝘀𝗲 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝗶𝗰 𝗤𝗔 𝗮𝗻𝗱 𝘂𝘀𝗲𝗿-𝗳𝗼𝗰𝘂𝘀𝗲𝗱 𝘁𝗲𝘀𝘁𝗶𝗻𝗴. 🏆 𝟐𝟎𝟎 + web sites and 📱 𝟔𝟎+ mobile apps were tested, improved and debugged, ensuring the best quality, usability and conversion. 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞, 𝟔𝟖𝟎𝟎 hours worked at Upwork. Experience in testing AI-driven apps. ▶ Senior Software Tester / QA Expert / Web & Mobile app testing / QA Analyst / WordPress pro / Project Manager. I work with small business: WordPress, WooCommerce, Shopify web development companies, early-stage SaaS startups, product owners and indie software developers. Your digital business's success is based on the quality of your software! My top priority is identifying issues before they reach your users. My specializations: • AI - Extended Manual QA: Mobile App Testing - iOS / Android, Web testing • Technical Project Management 𝐖𝐡𝐲 𝐝𝐨 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐡𝐨𝐨𝐬𝐞 𝐭𝐨 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞? 👇 ✔"Vitaly is an amazing tester and gives such much attention to detail. He has given me new tools to use in my own business and has streamlined a lot of things for me. Could not recommend him more." As a results-driven QA Engineer, I deliver high-quality, reliable, and user-friendly products that exceed expectations. By leveraging a wide range of QA tools, devices, and testing methodologies, I ensure top-notch results that drive customer satisfaction. 🔍 𝑪𝒐𝒓𝒆 𝑴𝒂𝒏𝒖𝒂𝒍 𝑸𝑨 𝑻𝒆𝒔𝒕𝒊𝒏𝒈 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔: ✅ Risk-Based Testing ✅ AI-assisted QA ✅ Conversion focused e-Commerce QA ✅ Websites, Mobile App, Flutter, Game Testing ✅ Functional Testing ✅ Cross Browser / Cross Device Testing ✅ End-to-End Testing ✅ Compatibility Testing, Responsive Design Testing ✅ UI/UX Testing and Review ✅ Exploratory Testing, Black Box Testing ✅ Usability Testing, User Acceptance Testing (UAT) ✅ Smoke / Sanity, Regression Testing ✅ Beta Testing, Pre-Launch, Post-Release QA ✅ Test Case Design & Execution ✅ Agile Scrum ✅ QA Management ◉ Domains tested: AI - powered apps, Healthcare SaaS, WordPress, WooCommerce, E-commerce, Shopify, Laravel, OpenCart, Magento, Real Estate, Wellness solutions, Cloud-based SaaS, Kids and EdTech applications, CRMs, dating apps, Bubble io (no-code apps), custom websites, iGaming / betting, Online casinos and games. 🧪 𝑻𝒐𝒐𝒍𝒔, 𝑬𝒏𝒗𝒊𝒓𝒐𝒏𝒎𝒆𝒏𝒕𝒔 & 𝑫𝒆𝒍𝒊𝒗𝒆𝒓𝒂𝒃𝒍𝒆𝒔: • I combine the best QA techniques & AI to increase testing efficiency and covering • Mobile App Testing: Android Studio, TestFlight, Diawi, iMazing & Emulators, Postman • Bug Tracking & PM tools Jira, Trello, Asana, Monday com, Notion, GitHub I supply Detailed Bug Reports with Annotated Screenshots, Videos • Cross-device Testing: Browser Stack, Blisk, DevTools / Сonsole • Understanding frontend - HTML, CSS, JS • Familiar with on-page SEO Experience in QA Documentation - Design and UI testing: Photoshop, Figma, Adobe XD, PerfectPixel • Conversion: Hotjar - Project Management Support 🤝 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? As a Expert Software QA and Project Manager, I bring a unique blend of technical expertise and business awareness to every project. With a proven track record in WordPress web development and QA, I deliver high-impact solutions that drive results. By combining technical expertise with collaborative approach, I help my clients to launch reliable, user-friendly products that are over the top. My experience in the IT field is also underscored by the fact that I run my own WordPress / WooCommerce dev and QA company. Soft skills: ◉ Adaptable & Results-Oriented: I'm a quick learner who delivers results-driven solutions. I prioritize quality over everything else. ◉ Industry Expertise: I stay current with the latest industry trends, test design methodologies, and best practices in QA software testing. ◉ Dedicated Client Support: I'm always available for open communication, ensuring your needs are met and concerns are addressed. ✅ I can successfully meet deadlines. I'm available for both short-term QA tasks and long-term collaboration. 💬 There are few verified reviews from my happy Customers: ✔I can recommend Vitaly's website QA testing services enough. Their professionalism, speed, and meticulous attention to detail are second to none. If you are seeking top-notch QA services, Vitaly is the team to trust. I am truly grateful for their exceptional work and will undoubtedly engage their services for any future QA needs. ✔Vitaly paid great attention to details. I would recommend him on QA tester /Senior QA role. Well done!; ✔Excellent knowledge and experience about testing 📩 Let’s work together to ensure your product is fully tested and ready for success. Feel free to drop me a message on Upwork - just click the button in the top-right corner. 𝑩𝒆𝒔𝒕 𝑹𝒆𝒈𝒂𝒓𝒅𝒔, 𝑽𝒊𝒕𝒂𝒍𝒚 𝑩𝒊𝒆𝒍𝒊𝒂𝒌𝒐𝒗

  • Software Testing
  • Software QA
  • Functional Testing
  • Regression Testing
  • Manual Testing
  • Web Testing
  • Mobile App Testing
  • Mobile QA
  • User Acceptance Testing
  • Quality Assurance
  • Cross Browser & Device Compatibility
  • Usability Testing
  • Annotated Screenshot
  • Bug Tracking & Reports
  • QA Software & Testing Tools
Muhammad S.

Karachi, Pakistan

$25/hr
5.0
88 jobs

🔐 Helping Startups & Enterprises Eliminate Critical Security Risks—Before Hackers Exploit Them I’m a Certified Penetration Tester with 7+ years of offensive security experience. I specialize in securing web apps, mobile apps, APIs, and cloud infrastructure to help you prevent breaches, stay compliant, and protect your users. 🧰 My Security Expertise: Web App Pentesting – OWASP Top 10, SQLi, XSS, CSRF, SSRF, logic flaws Mobile App Security – iOS/Android reverse engineering, insecure storage, API exposures API & Cloud Security – REST, SOAP, GraphQL; AWS/Azure/GCP misconfigurations Manual Testing & Reporting – Clear, developer-friendly bug reports (JIRA, Trello, Agile teams) 🏆 Success Stories: ⚠️ Identified 50+ critical vulnerabilities in a fintech app, preventing a $500K breach 🔒 Secured 100+ applications used by 500K+ users, reducing risk by 80% post-audit 📄 Delivered 100+ penetration testing reports with prioritized, actionable fixes 📜 Certifications: 🛡️ OSCP – Offensive Security Certified Professional 🕵️ CEH – Certified Ethical Hacker 🔐 CompTIA Security+ 💡 Why Clients Choose Me: ✅ Actionable Reporting – Prioritized issues + clear developer guidance ⚡ Fast Turnaround – Critical bugs reported within 24 hours 🛡️ Confidential & Compliant – Full NDA, encrypted communications, secure tool usage 🌍 Trusted by – YC-backed startups, Fortune 500s, global security firms 🚀 Ready to Secure Your App? Click “Invite to Job” and get: ✅ A free 15-min consultation ✅ A sample penetration testing report ✅ Critical issues reported in just 24 hours

  • Cloud Security
  • Vulnerability Assessment
  • Penetration Testing
  • Internet Security
  • Security Analysis
  • Security Engineering
  • Security Assessment & Testing
  • Information Security Audit
  • NIST Cybersecurity Framework
  • Web App Penetration Testing
  • Network Penetration Testing
  • Red Team Assessment
  • Cybersecurity Monitoring
  • Certified Information Systems Security Professional
  • Security Testing
  • AI Security
  • Security Policies & Procedures Documentation
  • Blockchain Security
  • Information Security Consultation
  • Information Security

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

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.