
Hàng triệu người dùng sử dụng Freelancer để biến ý tưởng thành hiện thực.
Được tin tưởng bởi các thương hiệu và startup hàng đầu
Post your project for free and connect with skilled freelancers ready to start today. Compare bids, ratings and portfolios, and only pay when you're happy with the work.
~310 sec
to first bid
53+
bids per project
7k+
freelancer trực tuyến
Không tốn chi phí trả trước · chỉ thanh toán khi bạn hài lòng với công việc

10,0
10,0
97%

Surat, India
$15 USD một giờ
⭐ Top 1% on Freelancer.com | Narola Infotech - Digitalising Businesses Since 2005 ✎ About Us We are Narola Infotech, a globally recognized IT solutions company with 20+ years of experience delivering high-performance web, mobile, and enterprise software solutions to 1500+ happy clients across 50+ countries. Trusted by Fortune companies like CGI, L&T, Infosys, Biocon, and TVSNext. We don't just build software, we build lasting partnerships. Our approach is simple: understand your vision, deliver beyond expectations, and stay with you every step of the way. ✎ Why Choose Us? ➬ 20+ Years of Industry Experience ➬ 350+ Talented IT Professionals ➬ 3000+ Successfully Delivered Projects ➬ 95% Client Retention Ratio ➬ 4.9 ⭐ Clutch Rating ➬ 100% Project Success Ratio ➬ Clutch Top 1000 Companies Global 2022 ➬ Best Outsourcing Company - SGCCI ✎ Our Services ➬ Custom Web & Mobile App Development ➬ Custom Enterprise Software Development ➬ AI/ML & Data Analytics Solutions ➬ QA & Software Testing (Automation, Security, Performance) ➬ DevOps, Cloud Migration & Managed Services ➬ Salesforce Consulting, Implementation & Support ➬ Staff Augmentation - Dedicated Teams or Individual Developers ➬ Support & Maintenance ✎ Tech Stack ➬ Frontend: ReactJS, AngularJS, VueJS, NextJS, NuxtJS ➬ Backend: Node.js, Java, PHP, Laravel, .NET, Python, Django, WordPress ➬ Mobile: Flutter, React Native, iOS (Swift), Android (Java/Kotlin) ➬ Cloud & DevOps: AWS, Azure, Docker, Kubernetes, Jenkins, CI/CD, Terraform ➬ Database: MySQL, MongoDB, PostgreSQL, Firebase, MS-SQL ➬ Other: Salesforce, MS Dynamics 365, Power Platform, Big Data, AI/ML, Automation ✎ Industries We Serve ● Fintech ● Healthcare ● Retail & Ecommerce ● Education ● Real Estate ● Media & Entertainment ●Transport & Logistics ✎ Our Strengths ➬ Agile Development Methodology ➬ Daily & Weekly Progress Reports ➬ Clear Communication & Collaboration ➬ 100% Plagiarism-Free & Secure Delivery ➬ Guaranteed Data Privacy & NDA Protection ➬ Flexible Engagement Models: ● Fixed Cost ● Time & Material (Hourly) ● Dedicated Team ● Hybrid Model (Fixed + Hourly) ✎ Our Promise "You will get the value of every penny you spend. We are committed to driving your business forward with reliable, quality solutions powered by technology and innovation." - Ashish Narola, CEO

7,7
7,7
95%

Nagpur, India
$50 USD một giờ
I build clean, functional solutions fast across the full stack. Specializing in: - Web: React, Next.js, Node.js, Python, PHP, Ruby on Rails, Golang, Laravel, Django, WordPress, Vue.js - Mobile: React Native, Flutter, Android (Kotlin), iOS (Swift), Dart - AI & Machine Learning: LLM integrations (Claude, OpenAI, Gemini), RAG pipelines, LangChain, vector databases, prompt engineering, chatbots, NLP, OCR, generative AI - APIs & Integrations: REST, GraphQL, payment gateways (Stripe, PayPal, Razorpay), Twilio, SendGrid, third-party services - Cloud & DevOps: AWS, Azure, Docker, Kubernetes, Jenkins, CI/CD, Nginx, Linux server administration, Cloudflare - E-commerce & CRM: WooCommerce, OpenCart, Magento, Odoo, Prestashop, Point of Sale systems - Databases: MySQL, PostgreSQL, MongoDB, MariaDB, Elasticsearch, SQLite, Redis, Microsoft SQL Server - Trading & Finance: MetaTrader 4/5, MQL4/5, Pine Script, NinjaTrader, OpenClaw, backtesting, trading bots - Data & Automation: Excel/Google Sheets automation, dashboards, data analysis, workflow automation I focus on understanding your requirements clearly, delivering working code, and communicating progress throughout.

8,1
8,1
93%

Jaipur, India
$40 USD một giờ
Web | iOS | Android | Java | Python | Node | React | Angular | AI | Blockchain | Bot At P4logics, We specialize in developing web and mobile applications using AngularJS, ReactJS, FlutterJS, React Native, NodeJS, Java, and Spring Boot. Our team of experts is committed to creating high-performance, scalable, and user-friendly applications tailored to the unique needs of our clients. With over a decade of experience, our seasoned team of developers operates around the clock, ensuring unparalleled service delivery in the most efficient and effective manner possible. Our approach is rooted in meticulous observation, attentive listening, and profound understanding, enabling us to craft bespoke yet intelligent solutions for our clients. Skill Sets: Specializations in Programming Languages & Frameworks: Java, J2EE, JavaFX, Swing, Socket/RMI Programming Spring Boot, Spring Security (using JWT, CSRF, OAuth token sharing), Spring JPA, Web Services, Hibernate, PHP, WordPress, Python Frontend & Mobile Development: AngularJS, React Native, ReactJS, NodeJS, FlutterJS, Swift, Android Web Scraping / Web Automation AI and Blockchain Image and Video Processing Services: Web Development iOS Development Android Development Java Development React Development Angular Development Bot Development Thank You

6,8
6,8
92%

Faisalabad, Pakistan
$30 USD một giờ
A Warm Welcome to My Profile :) Hello Clients ! I am a Senior Full Stack Developer , Enthusiastic and hardworking having more than 6 Years of Experience , I am not new on this platform Serving clients Globally Since 2018 . I have a Registered Office in Pakistan and U.K , I am providing “HIGHEST QUALITY” and “BEST SOLUTIONS” within the “REASOABLE BUDGETS” to my Clients . If you are Finding Someone with the below written skills then I am the Right choice You can Hire Me with Full Confidence . Here's a glimpse of the solutions I offer: ✔️ Java - C++ - C# - C - Python - .Net - Mysql - Sql - PHP ✔️ Assembly - Object Oriented - Graphical User Interface ✔️ net Beans - Eclipse - Apache - Java Spring - J2EE ✔️ Haskell - x86/x64 Assembler - Algorithm - Desktop Applications ✔️ Oracle - Database Administration - Visual Basic - Unix -Mysql - PostgreSQL - ✔️ Machine Learning - Data Processing - Deep Learning - Excel ✔️ Django - Flask - Ubuntu -Automation - Data Extraction - Data Analyst - NLP Chatbots ✔️ Data Science - Artificial Intelligence - Linear Regression ✔️ Android IOS Development - Flutter - Dart - React Native - ✔️ Game Development - 2D - Game console - Game Design ✔️ Website Development - Html - CSS - Javascript - Laravel - CodeIgniter - Deployment ✔️ Angular JS - Node js - React js - TypeScript- Wordpress - Figma - API's - ✔️ Mern Stack - Shopify . Codeigniter - Servers & DevOps - Linux - Apache/Ngix - Docker - CI/CD ✔️ Microcontrollers - Arduino - PCB Layout - STM32 - (IoT) ✔️ Amazon Web Services - Amazon S3 - Cloud Computing - MongoDB ✔️ AWS Lambda - XML - AJAX - JSON - RUST Programming ✔️ Blockchain - Smart Contracts - Metatrader - MT4 - MT5 - Pinescript ✔️ Bot Creation - MERN Stack - Video Editing - E-commerce - Tik tok sales - Marketing ✔️ 3D Rendering - 3D Design - AutoCAD ✔️ Security & Scripts - Hardening - Pen testing - Script Installation . ⭐ All types of Writing ✔️ Technical writing ✔️ Research writing ✔️ Report writing ✔️ Business plan Writing, ✔️ Statistics ✔️ PDF ✔️ Formats: MLA, APA ,Harvard, IEEE My slogan is ** Best Quality** + ** Fast Speed ** + ** Hard Work** and Ensure every Project get Successful.

8,1
8,1
100%

Lahore, Pakistan
$20 USD một giờ
Full Stack (Web and Mobile apps) developer, proficient in: Web Expertise: → Laravel (PHP) | NodeJS | Python → HTML/HTML5 | CSS/TailwindCSS | JavaScript | BootStrap → ReactJS | AngularJS | VueJS | NextJS | NuxtJS | ReduxJS | Three.js | Express.js → Databases: SQL | MySQL | PostgreSQL | Oracle | MongoDB | MariaDB → A plus: Python, Java, .NET Core → RESTful and SOAP API(s) development + integrations → CMS: WordPress | Shopify | Joomla | Drupal | Magento | Wix | Prestashop → UI/UX Design: Figma | AdobeXD Mobile Expertise: → Native: Java, Kotlin, Swift, Objective C, Xamarin → Hybrid: Flutter, React Native → SQLite, MongoDB, PostgreSQL → Games: Unity (3D and 2D) Ai/ML Expertise: → TensorFlow, PyTorch, scikit-learn → Data Manipulation and Analysis: pandas, NumPy → NLP: NLTK (Natural Language Toolkit), spaCy → Cloud Services: AWS, Azure, Google Cloud → Big Data and Distributed Computing: Apache Hadoop, Apache Spark → OpenAI Gym, Stable Baselines, OpenCV I've been serving the field of tech since 2012 and have worked with leading tech giants in my country and all over the globe. I've worked on numerous robust Web and Mobile-based projects currently serving their bigger causes. The choice is yours!

6,0
6,0
88%

lakhisarai, India
$35 USD một giờ
"" Hello there, we are a team of passionate AI Automation and Full Stack Web and Mobile App developers with 12 years of proven experience in transforming business ideas into powerful digital solutions. Let's share your dream project and we will deliver you a robust, excellent and scalable software application. "" AI/ML Software Development Coding Jobs Online deep technological expertise in machine learning and artificial intelligence development services to help clients deliver personalization and customer convenience at scale. Our R&D capabilities and artificial intelligence software development for rapid prototyping and custom machine learning solutions empower clients to tap into unseen market segments, become more efficient, and achieve measurable business outcomes. We strive to delight customers and augment businesses by delivering AI software solutions and machine learning development services. I lead a team of 35+ skilled developers who have successfully delivered 100+ complex projects across healthcare, real estate, e-commerce, enterprise sectors and many more. We work on Python (FastAPI), JavaScript, Data Science, AI, ML, Chatbot, Java, PHP, HTML, CSS, Webflow, Software Architecture, Oracle, MySQL, Rust, Linux, Data Analysis, Artificial intelligence, Bluebeam , Building information modelling, Documentation, Embedded system, Signal processing, AI Animation AI developers, WordPress, Visual basic, Node.js, Java, CSS, API, Paypal api, e-commerce, Mobile app development, Blockchain, Cloud computing, Test Automation, Web scrapping, .NET, C#, Desktop application, Bioinformatics, NoSQL Couch & Mongo, Database Administration, Android, iOS, CMS, JavaFx, Microcontroller, Animation, Machine learning, neural network, Deep learning, Google app engine, Asterisk, PBX, DitNetNuke, PeopleSoft, Boonex Dolphin, Embedded software, CRM, Forums software, Test Automation, CakePHP, DNS, Golang, Azure, AWS, jQuery, Robotics, MVC, Agile development, Hadoop, OpenGL, Google Chrome, Oracle/SQL database design & optimization, and micro-services. I work on building scalable REST APIs, integrating services, performance tuning, and maintaining production systems. Technical Expertise Python, Django, Flask, Fast API, Rest API integration. Java, Spring boot, JavaScript, PHP, Ruby on rails, Laravel, Cii, Java Servlet. Frontend Mastery: React.js, Next.js, Angular, TypeScript, Modern UI/UX Backend Excellence: Node.js, PHP, WordPress (6+ years), REST APIs Cloud & DevOps: AWS, Firebase, Vite, CI/CD pipelines E-commerce: WooCommerce, Shopify, custom cart solutions AI Integration: OpenAI, ChatGPT, automation tools Mobile Development: React Native, cross-platform apps Industries We Excel In Healthcare & Medical Solutions Real Estate & Property Management E-commerce & Retail Platforms Professional Services & Consulting SaaS & Enterprise Applications Marine & Specialized Industries Museum Application Thanks & Regards Ashish Kumar.

5,2
5,2
100%

Lacombe, United States
$80 USD một giờ
B.Sc. in Information System and Software Engineering from Oxford Brookes University with 8+ years of work experience in software development. Skills Set: * Languages: Java, Python, JavaScript, PHP, C/C++ * Web: Angular, HTML/5, CSS/3, Bootstrap, JQuery, Ajax, JSON * Java Techs: Spring, Hibernate, RESTful, EJB, Swing, JavaFX, JSP, Servlet, JSF/Facelets, JPA, ZK, JDO, PrimeFaces, JasperReports. * Mobile: Android * Testing: TDD, Cucumber, JUnit/TestNG, Hamcrest/AssertJ, Mockito, Selenium * Web scraping: Scrapy, lxml, BeautifulSoup * Database: MySQL, PostgreSQL, MongoDB, SQL Server * Devops: Docker, Vagrant * OS: Linux, Windows * IDEs: JetBrains IDEs, Eclipse, Netbeans, Jupyter Notebook, BlueJ, Android Studio, Spring Suite, Visual Studio Code * Trends: IoT, Big Data, Machine/Deep Learning, Robotics Thanks for visiting, you can reach out to me via my linkedin account @anhhoangnguyen. Best Regards, Ryan

4,6
4,6
100%

Lahore, Pakistan
$30 USD một giờ
I help businesses build scalable backend systems, Agentic AI solutions, and intelligent automation using Java, Spring Boot, and ATG (Oracle Commerce). With 8+ years of experience and 30+ successful freelance projects (5⭐ rating), I turn complex requirements into efficient, production-ready systems that save time and reduce operational costs. 💡 What You Can Expect Automation that reduces manual work and improves efficiency Backend systems that handle real-world scale and traffic Clean, maintainable code that lowers long-term costs Fast issue resolution and clear communication 🚀 Core Expertise Java, Spring Boot, Spring MVC ATG (Oracle Commerce) development REST APIs & microservices architecture AWS (EC2, RDS, Elastic Beanstalk) Database design & optimization (Oracle, MySQL, MS SQL) JSP, Servlets, HTML5, CSS3, JavaScript ⚡ Advanced Capabilities Agentic AI systems & LLM-based automation Workflow automation & process optimization IBM MQ, JMS integrations (enterprise systems) Docker & DevOps workflows Monitoring (New Relic, Sumo Logic) 🏆 Proven Track Record ✔ 30+ completed projects with consistent 5⭐ feedback ✔ Published research in AI (Pattern Recognition) ✔ Strong experience across backend, frontend & databases 🎯 What I Can Help You With Build AI-powered automation tools Develop or scale your web application Fix performance bottlenecks Integrate APIs and third-party systems Maintain and improve legacy Java/ATG platforms 🤝 Let’s Work If you need a developer who combines AI, automation, and solid engineering, I’m ready to help. Send me a message with your requirements—I’ll suggest the best approach before we start.

5,3
5,3
97%

Tirane, Albania
$30 USD một giờ
I possess the ability to design and develop Test Automation Framework from scratch based on the Page Object Model (POM) design pattern using Gherkin and Cucumber BDD. My experience includes analyzing, designing, and implementing QA testing strategies for web-based applications. Additionally, I am proficient in using Jira as a bug-tracking tool and for generating reports. In addition, I have a wide range of technical skills, including Maven, Gherkin, Agile (Scrum), SDLC, and Jira (X-Ray). I also have experience working with RestAssured, TestNG, JUnit, Serenity, Apache POI, CI/CD, and Selenium Web-driver. My expertise extends to API and Database testing, where I am skilled in using(automation) tools like Postman, and working with JSON data and JDBC for databases. Finally, I can create various reports like HTML, JSON, and Cucumber reports.
A JUnit developer is a Java testing specialist who writes, maintains, and automates unit tests using the JUnit framework to verify code behavior, catch regressions, and support reliable software delivery. Hiring a skilled JUnit developer means securing thorough test coverage, faster debugging cycles, and a Java codebase that holds up under continuous integration.
JUnit developers design and implement automated tests for Java applications, ensuring that individual classes, methods, and components behave as expected. They work alongside backend engineers to embed testing into the development lifecycle, often as part of test-driven development (TDD) or behavior-driven development (BDD) workflows.
Their work directly affects code quality, release confidence, and the cost of fixing defects later in production. Strong unit testing reduces regressions, shortens QA cycles, and gives engineering teams the freedom to refactor without breaking functionality.
A JUnit specialist produces more than test files. The deliverables typically include comprehensive test suites, integration with build tools, and documentation that helps internal teams maintain coverage long after the engagement ends.
The JUnit ecosystem extends well beyond the core framework. A capable JUnit expert is fluent in the surrounding tools that make Java testing reliable and scalable.
Java remains a backbone language across enterprise systems, which keeps JUnit testing in steady demand. Common industries and use cases include:
Strong candidates show a clear grasp of testing principles, not just framework syntax. Look for engineers who can articulate why a test is structured a certain way, how to isolate dependencies, and how to balance coverage with maintainability.
Useful interview questions to ask candidates:
Freelancer.com gives you access to a global pool of Java testing specialists, from independent JUnit consultants to senior engineers with deep enterprise experience. You can review profiles, portfolios, ratings, and verified reviews before you commit, and you set your own budget while receiving competitive bids from freelancers on Freelancer.com.
The scale of the marketplace means you can find a JUnit expert for a one-week refactor, an ongoing CI integration project, or a long-term engagement embedded in your engineering team. Milestone Payments, transparent reviews, and built-in chat make it straightforward to manage the engagement from brief to delivery on Freelancer.com.
Hiring a JUnit developer on Freelancer.com is straightforward when your brief is specific about the Java stack, the framework version, and the coverage outcomes you expect. The three steps below walk you from posting your project to awarding it to the right candidate.
The project post is the single biggest determinant of bid quality. A clear, technical brief filters out generalists and attracts JUnit specialists whose skills genuinely match your stack. Head to the
Bids are short proposals, not just price quotes. They reveal how each JUnit developer interprets the brief, how they plan to approach test design, and whether their timeline is realistic. Read the proposals carefully and shortlist candidates whose understanding of the Java testing work matches what you described.
The final decision combines proposal quality with profile evidence. For JUnit work, look at consistency across past Java projects rather than a single standout example, and pay attention to written reviews from clients who hired for similar testing or backend engagements.
Timelines depend on the size of the codebase and the existing coverage. Adding tests to a small Spring Boot service can take a few days, while retrofitting a large legacy Java application with meaningful unit and integration tests can run several weeks or longer.
Yes. Many clients hire JUnit freelancers for fixed scopes such as raising coverage to a target percentage, writing tests for a specific module, or integrating JaCoCo reporting into a Jenkins pipeline. You can also engage the same freelancer on an ongoing basis if the work continues.
JUnit is the test framework that runs your tests and provides assertions, lifecycle hooks, and reporting. Mockito is a mocking library used inside JUnit tests to replace real dependencies with controlled stand-ins, so you can isolate the code under test.
If your priority is unit and integration testing inside the Java codebase, a JUnit developer is the right fit. If you also need end-to-end testing, manual QA, performance testing, or test strategy across multiple stacks, you may want a broader QA automation engineer or a small test team.
JUnit 5 is the current standard and supports modern features such as extensions, parameterized tests, and better integration with Java 8 and later. New projects should generally start on JUnit 5, while JUnit 4 is still common in legacy codebases that have not yet migrated.

Freelancer Doanh Nghiệp
Hãy sử dụng lực lượng lao động gồm 89.1 triệu người của chúng tôi để giúp doanh nghiệp của bạn đạt được nhiều thành tựu hơn.

Freelancer API
Tại sao phải đi thuê người khi bạn chỉ cần tích hợp lực lượng tài năng trên nền đám mây của chúng tôi?
Đăng dự án hôm nay và nhận chào giá từ các freelancer tài năng
Lấy thêm cảm hứng từ các dự án JUnit

Thiết kế website.
540 USD trong 7 ngày.

Thiết kế app.
100 USD trong 1 ngày.

Website.
430 USD trong 1 ngày.

Thiết kế website.
140 USD trong 13 ngày.

Thiết kế app.
200 USD trong 19 ngày.

Website.
150 USD trong 13 ngày.

Website.
240 USD trong 1 ngày.

Website.
100 USD trong 1 ngày.
Hàng triệu người dùng, từ kinh doanh nhỏ đến doanh nghiệp lớn, chủ doanh nghiệp đến nhà khởi nghiệp đều sử dụng Freelancer để biến ý tưởng của họ thành hiện thực.
89.1 Triệu
89.1 Triệu
Người Dùng Đã Đăng Ký
25.7 Triệu
25.7 Triệu
Tổng Số Việc Đã Đăng