Hire the best Software QA Testers in Serbia
Check out Software QA Testers in Serbia with the skills you need for your next job.
- $30 hourly
- 4.9/5
- (11 jobs)
Hello, With over seven years of experience in IT (3 of which were for one of largest European software developers Asseco), I am sure I can bring a lot to the table! I have helped publish new versions of apps with new features for 14 Banks in Serbia. For 2 of the fourteen banks, I worked on a project from the start, creating the environment, writing Solution Design Documents, writing test cases, going through all the test cases, automating most used test cases, reporting the bugs, and communicating with multiple teams on creating the perfect end-user experience. If I sound like I could help you, make sure to hit me up!Software QA TestingDevOpsWeb DesignSQLMicrosoft WindowsPostmanPHPDatabase ManagementKubernetesPythonBusiness with 10-99 EmployeesJiraAPI TestingLinuxFiddlerJoomlaSoftware QATest Results & AnalysisQA EngineeringMySQLsoapUI - $15 hourly
- 5.0/5
- (20 jobs)
𝗛𝗲𝗹𝗹𝗼, I'm 27 years old from Belgrade, Serbia and I have 4 years of experience as a QA Engineer. I'm able to handle multiple tasks on a daily basis. I have experience working as part of a team and individually. I'm flexible in my working hours, being able to work evenings and weekends. I can safely say that I'm confident in my skills to work as a QA. My tasks were mainly to test new features manually and control the overall quality of the project, but I also worked to an extent to automate certain parts so I'm comfortable with that as well. 🛠𝐓𝐨𝐨𝐥𝐬 I worked with: -Jira -Monday -Postman -Cypress -Selenium with Java 💡𝐒𝐤𝐢𝐥𝐥𝐬: -Automated testing -Writing Test cases -Detecting bugs -Performance testingSoftware QA TestingManual TestingQA TestingQA Software & Testing ToolsAutomated TestingRegression TestingPerformance TestingBug Tracking & ReportsSoftware TestingMobile App TestingSoftware QAWeb Testing - $20 hourly
- 5.0/5
- (2 jobs)
Experienced ISTQB Certified QA engineer with a demonstrated history of working in the information technology and services industry. Working as automation and manual tester using next tools: - Playwright - Postman - JavaScript - Jira - Azure DevOps - GitHub - Postgre sql databaseSoftware QA TestingManual TestingAzure DevOpsTest Case DesignGitHubScrumCypressPostmanJavaScriptSoftware QASoftware TestingCucumberJiraAPI TestingGitLab - $25 hourly
- 5.0/5
- (8 jobs)
Section 508 Compliance Specialist Certified DHS Trusted Tester Accessibility Testing following WCAG 2.1 Committed QA tester. Graduated Teacher with MSc in Economics. Finding cause for errors and defects has been my approach to every problem I encounter. That is why QA fits me. Digital Accessibility is my passion because I believe that everybody deserves equal opportunities and it is crucial for creating a truly inclusive world for everyone. I always try to fully understand the importance and respect for the project's demands and documentation. Also, I consider my communication and other soft skills to be pretty high because I have been dealing with people for most of my life (working in a Public Library). I started gaining my QA experience from online courses and sharpened them in 3 three-month courses held by QA professionals from Miticon and HTEC. The course covered live projects with PostgreSQL (CRUD), Selenium WebDriver, TestNG, Postman, Python, and POM. Currently working as a manual tester for Koia Global Limited (the Mava App), UAT tester at Glopal, QA at InferStat (paused for now), performing web accessibility audits. At Glopal reporting goes through Jira, and at InferStat we collaborate through GitHub. In these companies, I am dealing with different QA approaches and activities, bringing different and diverse experiences to my QA knowledge base. I'll be glad to discuss in detail every new job opportunity.Software QA TestingData ScrapingBug ReportsData EntryManual TestingAutomated TestingSoftware QASelenium WebDriverPythonWeb Testing - $15 hourly
- 4.9/5
- (176 jobs)
After six years of working as a freelance virtual assistant (and writer, WordPress content editor, and who knows what else), I decided to pursue my passion for IT 🚀 Today, I’m a QA specialist who loves diving into projects to ensure every detail works seamlessly. People know me as someone who doesn’t just solve problems but also questions the solutions, ensuring they are both effective and sustainable. I have a solid understanding of manual testing principles, including creating test cases, scenarios, and detailed bug reports. My background as a writer specializing in comprehensive how-to guides (like Google Sheets tutorials) sharpened my ability to craft clear, step-by-step instructions. Here’s what I can deliver: ✳️ test scenarios & test cases ✳️ checklists ✳️ detailed bug reports ✳️ annotated screenshots ✳️ screencasts (when needed) ✳️ suggestions for improvement I love every second of being a QA ❤️ for me, it's far more than "just clicking around" - it’s about being part of a team, having my insights valued, and actively contributing to the development of exceptional features. I enjoy analyzing systems, uncovering hidden issues, and helping businesses deliver flawless user experiences. Technical Skills: ✳️ manual testing terminology ✳️ UI/UX concepts ✳️ HTML & CSS ✳️ JavaScript & Cypress ✳️ Java & Selenium WebDriver ✳️ SQL & PostgreSQL ✳️ API testing with Postman ✳️ basic knowledge of Python In addition to my technical expertise, I’m currently a student of Software and Information Technologies at the Faculty of Technical Sciences, continuously deepening my knowledge. If you’re looking for a detail-oriented QA specialist with a proactive approach to problem-solving and a passion for delivering flawless user experiences, I’d love to collaborate with you. Let’s create something amazing together!Software QA TestingVirtual AssistanceJiraIT ManagementProject ManagementUser Acceptance TestingSoftware TestingUsability TestingFunctional TestingWeb TestingBug ReportsBug Tracking & ReportsSoftware QATestingQA TestingManual Testing - $20 hourly
- 5.0/5
- (3 jobs)
QA Manual Testing Specialist | 7+ Years Experience | 7k+ Testing Hours As an experienced QA tester, I have a proven track record in testing web, desktop, Android, and iOS applications. My expertise in manual testing methodologies and various tools enables me to thoroughly evaluate applications and ensure they meet the highest quality standards. My services include: - Analyzing requirements and designing test cases to identify potential issues. - Conducting manual, exploratory, usability, and regression testing. - Reporting bugs using tools such as Jira, Trello, etc. - Collaborating effectively with development teams to resolve identified issues. With my attention to detail and expertise, I ensure your application undergoes comprehensive testing, addressing any issues before release. My goal is to help you build a high-quality, bug-free application that meets user needs. Key Skills: - Manual QA Testing - Software & App Testing - Functional QA Testing - Usability Testing Feel free to contact me if you have any questions or need additional information.Software QA TestingSoftware QASoftware TestingManual TestingFunctional TestingRegression TestingMobile App TestingWeb TestingUsability TestingGame Testing - $50 hourly
- 4.9/5
- (14 jobs)
I'm building a career in QA Software Testing, but content writing has always been my passion. I am greedy and workaholic when it comes to things that I love so I don't want to choose between them. Instead, I combine my versatility to come up with unique creative solutions for my clients. In the end, you do need creative content to keep the audience that you get. With 10,000+ SEO optimized articles written and a Bachelor Degree in Computer Science, I am a perfect suit for any writing job that you have to offer. I'm a highly qualified SEO Specialist (worked in the biggest Dutch Hosting Company, Abelohost) before I decided to start something on my own. I always do my research, use the Premium version of Grammarly, and do a Copyscape test to ensure that there is no plagiarism. *Background includes editing, publishing and content, article and review writing *Extensive HTML knowledge and experience with WordPress and various plug-ins *Has managed teams of writers, set up publishing calendars, and edited content *Is highly proficient in editing with Microsoft Word Track Changes and using Grammarly *Vast experience with guest post creation and backlink outreach *Has Upwork tested in the top percentiles for English spelling, vocabulary, basic skills, and both U.S. and UK article writing and blogging *Passionate about connecting with the reader, with the purpose to engage, teach and entertain *Excellent grammar and communication skills *Always attentive to small details *Recognized as a consistent, talented writer, reviewer, and editor *Thrives best in a creative, entrepreneurial environment *Consistently adheres to and meets strict deadlines *Specializes in the travel industry, business, and technical writing and editing *Has created and maintained a professional travel and entertainment website and blog, including gaming destinations *Academic Essay editing and proofreading *Vast experience with SEO, hyperlinks, and cross-referencing other articles within the story body *Possess hundreds of working relationships with visitor and convention bureaus across the country, as well as media and press organizations and outlets *Has extensive knowledge of hotels based across the globe *Has both written and edited lifestyle and academic materials for ESL teachers *Image editing and re-sizing *Edits proofreads and writes academic content QA I love to explore applications to find bugs and question features and functions rather than blindly following test scripts. Always been interested in learning how things REALLY work and how they interact with each other and fit together. Curious about all of the software testing. This includes various types of principles and methodologies: black box, grey/white box, exploratory, regression, smoke, integration, end-to-end, manual, and automated testing. • Manual Testing: Identifying and documenting bugs in JIRA, documenting test cases in TestRail. Assist developers to help investigate, find and solve problems and ensure newly delivered features meet client needs and are consistent across the product. Help establish, evolve and enforce QA processes ensuring industry best standard practices • Attending standups, ensuring all QA members have items for work and are progressing as needed. • Coordinating with all moves with the environments. o Assigning a QA resource o Providing test data if needed. • Working with team members in their projects and user stories to make sure they are guided thru the process. • Assist the team as needed for special customer commitments, blocked worked items, etc. • Ability to manage the QA team and be their liaison if necessary to the developer and Product Owners • Having complete/daily knowledge of what your team is doing by attending daily meetings • Help maintain the quality of work by conducting Test case review, Code Coverage & Iteration Review Excellent writing and communication skills, with good experience in writing reports, providing detailed steps to reproduce any observed functionality/issue, and being able to correspond clearly. Team player as well as an individual tester who is really interested in the total quality of the software. Feel free to contact me anytime!Software QA TestingLanding PageCopywritingContent WritingArticle WritingQA EngineeringSoftware QAManual TestingQuality AssuranceSEO Keyword ResearchSEO WritingEnglishArticleBlog ContentWebsite Content - $50 hourly
- 4.9/5
- (108 jobs)
Key skills: • Software Quality Assurance :: Setting up an entire QA process from scratch • Manual Software Testing • Test Automation :: Selenium Webrdiver, Selenium IDE, Tosca Testsuite, Usetrace, Ghostinspector, Ranorex, Cypress • UI/UX/Usability TestingSoftware QA TestingC#CSSSoftware QAHTMLWeb Testing - $40 hourly
- 5.0/5
- (4 jobs)
Experienced QA engineer who is passionate about learning new things and widening his software testing experience. Strongly believes in prevention rather than detection of bugs. Worked on various projects - from small mobile apps to big e-commerce websites, enterprise e-banking solutions and cloud-based biomedical data analysis platforms.Software QA TestingQA TestingTest ReportTest Case DesignGUI TestingManual TestingTestRailAutomated TestingSeleniumAPI TestingFunctional TestingRegression TestingSoftware TestingWeb TestingSoftware QASmoke Testing - $40 hourly
- 5.0/5
- (7 jobs)
CFO, Non tech bug hunter. In charge of managing the online projects on freelance sites. Worked on over 100 projects.Software QA TestingBlack Box TestingQA ManagementAutomated TestingQA EngineeringSoftware QAWeb TestingUser Acceptance Testing - $40 hourly
- 5.0/5
- (16 jobs)
Senior Manual QA Tester and QA Lead More than 10 years of experience specialized in functional, UX, UI testing, mobile, web testing, testcase writing and executing. Effectively built and organized QA teams, developed and implemented testing strategies. Managed multiple testing projects in parallel with tight deadlines. Worked in position QA Lead in company WeDoQa on many projects for different clients. We have covered many type of testing, from web based application testing to mobile device testing, desktop application testing, cross-browser testing, functional testing, UX/UI testing.... Past 3 years I'm working in The Sole Supplier company as QA Analyst and Consultant and later become QA Team Lead as well.Software QA TestingWeb TestingAssemblaMobile App TestingSoftware TestingQA ManagementSoftware QAFunctional TestingQA EngineeringUsability Testing - $35 hourly
- 5.0/5
- (4 jobs)
We recently migrated over from Elance. I'm the co-owner of WeDoQA. There we were among the top 50 IT providers. We have staff to meet all your QA needs be it manual or automated. If you are interested lets schedule a meeting to discuss the details.Software QA TestingQA ManagementUsability TestingAutomated TestingSoftware TestingSoftware QAQA EngineeringMobile App TestingWeb TestingFunctional Testing - $18 hourly
- 5.0/5
- (4 jobs)
As a QA engineer with 6 years of experience, I specialize in mobile and web testing. I am skilled in using tools such as Postman, Swagger, and Selenium (Python / Ruby / Java) for automated testing. I also have experience in game testing, which has allowed me to develop an eye for detail and a knack for identifying bugs and issues. Throughout my career, I have gained extensive experience in various aspects of quality assurance, including functional testing, regression testing, performance testing, and usability testing. My approach to testing involves a combination of manual and automated testing techniques, which allows me to thoroughly test applications and identify issues quickly and efficiently. In addition to my expertise in testing, I also have excellent planning skills, which allow me to efficiently manage my workload and ensure that projects are completed on time and to the highest standards of quality. I am able to work both independently and as part of a team, and I am comfortable collaborating with developers, project managers, and other stakeholders to ensure that everyone is on the same page and that project goals are met. I`m good at Data Analysis with MS Excel, MO 365, and Tableau (Made dashboards, tables, Efficiency charts, and diagrams, etc). Made efficiency analysis for products that had worked with. Whether working alone or in a team, I am always focused on delivering high-quality results and ensuring that deadlines are met. I am also open to feedback and always looking for ways to improve my skills and contribute to the success of the project. Overall, my experience, skills, attention to detail, planning skills, and ability to work independently or as part of a team make me an ideal candidate for any software development project.t.Software QA TestingPythonAndroid StudioManual TestingBlack Box TestingUsability TestingCross-Browser TestingTest PlanSoftware QASoftware TestingJavaWeb TestingMobile App TestingFunctional TestingRegression TestingGame Testing - $10 hourly
- 4.8/5
- (11 jobs)
If you are looking for a hardworking, ambitious and loyal person, look no further. Always open for a new learning experience and new challenges, I find motivation in little things. As a tester, I can bring to the table a wide range of abilities: - ask questions that inspire new test cases and different ways of approaching the tests; - always curious about my work projects and want to know what happens behind the scene; - a patient, skilled communicator who always meets his deadlines; - I always approach my test from different angles, putting myself in user's shoes, for maximum efficiency of my tests; - a strong individual that can do wonders in a dynamic team; - I pay a lot of attention to details and will find all the tweaks that can make your program better in every way possible; - the most important thing as a QA & Game Tester for me is quality, quality and again quality. I eat it, I breathe it, and never leave anything unfinished. As you can see I am the perfect choice for you and your team. Hope to hear from you soon. Best Regards Djordje StanisavljevicSoftware QA TestingGame TestingBlack Box TestingSoftware QACritical Thinking SkillsData EntryData Analysis - $85 hourly
- 0.0/5
- (0 jobs)
1. Familiar with software testing theory and methods, familiar with Internet industry testing environment and related technologies. 2. Responsible for the function, performance, security, compatibility and stability testing of PC client/APP/website/server. 3. Responsible for participating in product demand discussions and writing relevant test documents. 4. Personal characteristics: strong communication skills, quick thinking, team spirit, good sense of service; strong learning ability, proactive in work, and able to withstand certain work pressure.Software QA TestingBeta TestingSpacewalkStatic TestingSoftware TestingSoftware QATest Results & AnalysisAlpha Testing - $10 hourly
- 5.0/5
- (1 job)
About myself: Within around last 2 years working as QA Manual Tester and 12 years of experience on various manager positions. Organized and oriented to details with buildup balance between deadlines and priorities. Excellent verbal and written communication skills. Flexible with prominent willing to learn. Capable to work individually and adapt on various environment and roles.Software QA TestingGitTestingSoftware QAMicrosoft AzureSoftware TestingPresentationsSlackMicrosoft OfficeAlpha TestingJiraTest Results & AnalysisStatic TestingBeta TestingUser Acceptance Testing - $8 hourly
- 5.0/5
- (1 job)
Personal improvement Passionate about this field of business, also I believe to be a quick learner, patient with a great willingness to develop myself professionally and personally. ---------------------------------------------------------------- Team player Work eddectively both as a team member and independently. Eager to learn from others, people-oriented, great organizational and planning skills. Always ready to new challengesSoftware QA TestingLogistics ManagementDispatch Technologies DispatchWorkManagerSoftware QASoftware TestingRecruiting - $35 hourly
- 0.0/5
- (0 jobs)
Staff Quality Engineer with experience in different technologies, leadership, and management, as well as some backend development. I can quickly build frameworks for testing depending on your needs and capabilities, and I can lead QA or mixed teams with a focus on supporting all engineers, creating a good atmosphere within the team, and fixing the weak spots in processes and methodologies.Software QA TestingBack-End DevelopmentScrumEngineering ManagementWeb ApplicationWeb DevelopmentQuality AssuranceSoftware QA - $40 hourly
- 0.0/5
- (0 jobs)
Hello! I'm Aleksei, and I'm an Software Developer in Test in Wargaming with 5 years in IT. I moved from manual QA because somewhen I had started interest in programming and I started learn it by myself. And I got carried away with it. I passed special free cources, I read books about programming and software development as well, I overcame a lot of difficulties. And now I study again, but in new sphere for me, what I really enjoy. Specializing in testing frameworks and infrastructure, with a strong background in both distributed systems and UI applications. Professional Experience (5 years): 2 years in development and automation testing on Python. Skilled in Python and Pytest, Jenkins, REST API, Elasticsearch, Grafana, and GIT. Expertise in infrastructure management using Ansible for efficient deployment. 3 years in manual QA. Additional Skills: Strong analytical and troubleshooting abilities. Excellent communication and teamwork skills. Quick learner with a self-motivated approachSoftware QA TestingFastAPISQLAutomated TestingManual TestingKibanaLogstashElasticsearchGrafanaJiraDockerJetBrains TeamCityJenkinspytestPythonSoftware QA - $8 hourly
- 4.9/5
- (3 jobs)
Hey there, I am a passionate QA engineer with over 7 years of experience testing Mob/Web apps and IoT solutions. For the past 4 years, I have been working as a team leader of the QA team for a German company based in Serbia. Key testing competencies: 1. Web responsive design 2. UI/UX 3. API testing with Postman and Charles tools 4. Load testing with JMeter 5. Android/iOS mobile apps 6. Smart Tv's, Smart fridges, Smart toilets 7. Reviewing specifications and setting a clear test plan 8. Sanity/Regression test case creation and runSoftware QA TestingAccessibility TestingUsability TestingUX ResearchPerformance TestingBug Tracking & ReportsMobile App TestingLoad TestingQA EngineeringSoftware TestingSoftware QAManual TestingAPI TestingSmoke TestingWeb TestingSanity Testing - $25 hourly
- 5.0/5
- (16 jobs)
IT enhusiast,always ready for challanges ,learning and fun! Interested in QA / Software development and test automation. Familiar with Ruby, JavaScript and Java technologies. I like open source, Linux and server side technologies. KISS is my favourite principle. Learning GoLang these days... I like big and complex things cause they keep me not bored , if is challanging than there can no be lack of fun.Software QA TestingLinux System AdministrationWeb ServiceIssue Tracking SystemSystem AdministrationSoftware DebuggingBashAutomated TestingSoftware QARubySelenium WebDriver - $15 hourly
- 5.0/5
- (3 jobs)
With 3+ years of experience in the QA field, I am looking for employment. I am self-motivated and enthusiastic worker with vast experience in many different fields. Bringing forth a proven track record of achievement and a reputation for positive collaboration. Confident, hard working, and committed to seeing results in whatever position I am in. Reliable and dedicated to finding a place that will benefit from my superior skill set and energetic drive. 𝗤𝗔-𝗿𝗲𝗹𝗮𝘁𝗲𝗱 𝘁𝗼𝗼𝗹𝘀, 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲, 𝗮𝗻𝗱 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗜 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵: • Jira ( have experience with Jira + Xray integration as well ) • Monday • Shortcut • Postman 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗜 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵: • selenium with java • playwright with cucumber • cypress 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗜 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵: • C# (MVC, .NET Core) advanced • JavaScript (native, React, Vue) intermediate • TypeScript (Angular) advanced • Python (mostly scripting) intermediate • MySQL advanced • PHP (basics) beginnerSoftware QA TestingQA TestingSoftware TestingManual TestingJiraJavaScriptPythonSQLBashSeleniumSoftware QAQA EngineeringWeb TestingPostmanFiddler - $9 hourly
- 5.0/5
- (2 jobs)
A highly motivated, adaptable and analytical Quality Assurance Tester who enjoys taking new challenges and learning new skills. Well organised with attention to detail. Excellent interpersonal and cognitive skills and a proven ability to generate innovative ideas and solutions to problems. Enjoys working as a team member as well as independently. I have 2 years of experience in testing mobile applications and websites in all browsers. Education - Faculty of Economics, University of Belgrade, course - Accounting, auditing and financial management.Software QA TestingSoftware QA - $25 hourly
- 5.0/5
- (10 jobs)
Proven skills in completing Automation and Manual testing for more than 5 years of experience. Writing and implementing test cases, developing testing plans and identifying use cases and opportunities to increase efficiency through automation. Working closely with other engineers on increasing the test coverage. Perform other QA activities as necessary. Used to work in Agile teams. Tech Stack: - Automation UI Testing: Python and Java - Selenium and Appium (Android and iOS) - WebDriverIO in JavaScript - API Testing: Postman, RestAssured - Jmeter - Manual Testing: Functional, Non-functional, Regression, Exploratory, Black-box testing - SQL, MongoDB database - Git, CI/Jenkins, Browserstack - TestLink, Zephyr Scale - Team Foundation Server, Jira, Asana - VM Ware, vSphere: Linux Installation, the configuration of a test environmentSoftware QA TestingSelenium WebDriverSoftware QARest AssuredAutomated TestingSeleniumTest Case DesignJiraBug Tracking & ReportsAppiumRegression TestingAPI TestingWeb TestingEnd-to-End TestingFunctional TestingManual Testing - $13 hourly
- 5.0/5
- (17 jobs)
With my previous 6 years engagements as a stage manager at Nisville jazz festival, I gained a lot of experience in organizations, logistics and leadership. I have also learned how to work calm under pressure and I have improved my ability to multi-task. I'm very passionate about web research and I'm looking for jobs in that area first. I'm spending a lot of my free time online, searching for different subjects, and I'm good at finding answers. I respect deadlines and I'm very attentive. I have a sharp eye for details and well-developed problem-solving skills. As a self-driven and result oriented, I'm determined to get every job done well and on time. If you need a responsible and dedicated person for your job, please contact me.Software QA TestingAnalyticsSoftware QAMathematicsSQLMicrosoft Excel - $20 hourly
- 5.0/5
- (2 jobs)
Looking for a position where I can commit myself for the responsibility given in the company and fulfill it with my enthusiasm, professional ethic and strong desire to learn new skills.Software QA TestingData Quality AssessmentData LabelingSoftware QAData ManagementData ScrapingData MiningManual TestingMicrosoft ExcelGoogle DocsMicrosoft Office - $5 hourly
- 0.0/5
- (1 job)
I have a 10 years freelance experience as a software QA tester and I also worked for couple of years as data analyst.Software QA TestingSoftware QA Want to browse more freelancers?
Sign up
How hiring on Upwork works
1. Post a job
Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.
2. Talent comes to you
Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.
3. Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
4. Payment simplified
Receive invoices and make payments through Upwork. Only pay for work you authorize.