Hire the Best Quality Control Professionals

Clients rate our Quality Control Professionals
Rating is 4.8 out of 5.
4.8/5
Based on 664 client reviews
Satoshi Y.

Kitakyushu, Japan

$20/hr
5.0
9 jobs

Native Japanese professional with 15+ years of experience in the Japanese manufacturing industry. I support overseas companies as a local partner in Japan, helping them successfully enter the Japanese market and connect with reliable suppliers. With hands-on experience at companies such as Oita Canon Materials, I understand Japanese quality standards (Kaizen), business culture, and how to communicate effectively with local manufacturers. I am not just a researcher — I focus on delivering practical, actionable results that help you move forward with confidence. I am also easy to communicate with and always aim for clear, smooth collaboration with my clients. How I can support your project: ● Japan Market Research Market analysis, competitor research, pricing research, and regulatory checks ● Supplier & Manufacturer Sourcing Finding reliable Japanese suppliers that match your requirements ● Business Communication & Negotiation Support Contacting Japanese companies, email communication, and coordination ● Product Research (Japan Market / Amazon / Rakuten) Identifying products, trends, and opportunities in the Japanese market What you can expect: ● Clear and well-structured reports (Excel / Google Sheets) ● Reliable and punctual communication ● Careful attention to detail and accuracy ● Professional and polite interaction with Japanese companies Example of how I can help: I can identify reliable suppliers, compare pricing, and support communication with Japanese companies until you successfully establish business relationships in Japan. If you are looking for a reliable partner to navigate the Japanese market, I would be happy to support your project. Please feel free to contact me anytime.

  • Quality Control
  • Japanese
  • Market Research
  • Sourcing
  • Business Strategy
  • Market Analysis
  • Supply Chain Management
  • Microsoft Excel
  • Local Operations
  • Procurement
  • Project Management
Sanityoso A.

Bekasi, Indonesia

$8/hr
5.0
14 jobs

1. Develop and implement quality control procedures and protocols to ensure that products or services meet established standards of quality and reliability. 2. Conduct regular inspections, audits, and tests to identify quality issues and track performance metrics. 3. Review and analyze data and performance reports to identify trends, potential issues, and areas for improvement. 4. Work with cross-functional teams to address quality issues and develop solutions to prevent their recurrence. 5. Ensure regulatory compliance with all relevant laws, regulations, and industry standards, including product testing, labeling, and documentation. 6. Develop and maintain quality control documentation and records, including inspection reports, production logs, and training manuals. 7. Provide training and support to employees on quality control procedures, best practices, and industry standards. 8. Develop and maintain relationships with suppliers and vendors to ensure their products and services meet established quality standards. 9. Participate in product or service design and development projects, ensuring that quality control standards are integrated into the design and development process.

  • Budget Management
  • Financial Audit
  • Microsoft Excel
  • Google Docs
  • Bookkeeping
  • Accounting Basics
  • Administrative Support
  • Microsoft Office
  • Data Entry
  • Data Collection
  • Proofreading
  • Quality Assurance
  • Virtual Assistance
Mohamed E.

10th of Ramadan, Egypt

$40/hr
4.8
81 jobs

Need ISO certification without the stress? I help businesses implement ISO standards like 9001, 27001, 14001, 45001, 21001, and 17025 with custom-built systems that pass audits on the first try. My services include: 1. ISO System Design & Documentation 2. Internal Audits & Gap Analysis 3. Audit Readiness & Corrective Actions 4. ESG & Sustainability Reporting 5. Remote & On-site Consultations Industries I’ve worked with: IT & Software, Manufacturing, Healthcare, Education & Training, Laboratories, Food & Beverage, Logistics, Construction, NGOs, Government Entities, and Startups — in over 25 countries across the US, Europe Middle East, Africa and Canada Why work with me? With over 15 years of experience and 70+ successful ISO projects, I combine speed, precision, and clear communication to get you certified fast. Ready to get started? Send me a message, and let’s discuss how I can help your business achieve full ISO compliance with zero hassle.

  • Quality Control
  • Lean Manufacturing
  • Six Sigma
  • Business Plan
  • Form Completion
  • ISO 9000
  • Quality, Health, Safety & Environment Management
  • Technical Documentation
  • Financial Audit
  • ISO 14001
  • Internal Auditing
  • Quality Assurance
  • ISO 9001
  • ISO 27001
  • Sustainability
Muneeb S.

Lahore, Pakistan

$8/hr
4.6
54 jobs

Shipping buggy software costs you users and revenue. As a Top Rated QA Engineer with 6+ years testing Web, Mobile, and AI applications, I catch critical defects before launch, so your product ships stable, fast, and client-ready. 🚀 I cover the full QA spectrum: manual exploratory testing, Selenium/Cypress/Playwright automation frameworks built from scratch, REST API validation with Postman and REST Assured, and AI/LLM testing using DeepEval and Promptfoo. Most QA engineers handle one lane, I handle all three, including the emerging AI testing space that few freelancers are equipped for. Industries I've tested: SaaS platforms, eCommerce, fintech apps, CRMs, logistics systems, and AI calling bots. Here's what I deliver: ✔ Manual Testing: Functional, Regression, Smoke & Sanity, Cross-browser/device, Usability & UI/UX ✔ Automation Testing: Selenium (Java/Python), Cypress (JS), Playwright, TestNG/PyTest, framework setup from scratch ✔ API Testing: Postman, REST Assured, Swagger validation, API automation ✔ AI & LLM Testing: Prompt testing, model evaluation, chatbot/voice AI validation, NLP accuracy checks ✔ Performance Testing: JMeter, load & stress testing ✔ CI/CD Integration: Jenkins, GitHub Actions, GitLab CI, automated test pipelines ✔ Bug Reporting & Docs: Jira/Trello/ClickUp, detailed reports with screenshots, test plans & test cases 🏆 Top Rated on Upwork | 42 projects completed | 3,100+ hours | $30K+ earned ✅ Certified: AI Test Engineering (SHIFTSYNC) | Scrum Fundamentals (SCRUMstudy) ⭐ Client feedback: ◆ "Your QA work was detailed, clear, and extremely helpful in identifying critical issues before launch." ◆ "Communication was excellent, delivery was fast and consistent, and he was always available to answer questions." Send me a message today. I'll review your project and respond within a few hours with a tailored QA strategy, automation feasibility assessment, and a clear timeline. First consultation is free. Keywords: Web Testing, Software QA, Mobile App Testing, Functional Testing, Manual Testing, Software Testing, Automated Testing, QA Testing, API Testing, Test Automation Framework, Playwright, Test Automation, Test Design, Test Execution, Test Management, Test Plan, Test Case Design, Appium, QA Automation, QA Engineer, QA Software & Testing Tools, Mobile QA, Bug Reports, Bug Tracking & Reports, End-to-End Testing, Compatibility Testing, Desktop Application Testing, Browser Automation, Postman, Performance Testing, Quality Control, User Acceptance Testing, Usability Testing, Regression Testing, Cross-Browser Testing, Jira, UI/UX Testing, Quality Assurance, Payment Gateway Testing, iOS Testing, Android Testing, User Testing, Manual QA, AI Testing, Chatbot Testing, QA Engineer, QA Tester, Manual QA, Software Tester, Software Quality Assurance, Web Application Testing, Mobile App Testing, Android Testing, iOS Testing, Tablet Testing, SaaS QA, AI Testing, Chatbot Testing, Functional Testing, Regression Testing, Exploratory Testing, End-to-End Testing (E2E), User Acceptance Testing (UAT), Cross-Browser Testing, Responsive Testing, UI Testing, UX Testing, API Testing, Postman, Swagger, BrowserStack, Cypress, Playwright, JMeter, Bug Reporting, User Flow Testing, Payment Testing, Quality Assurance.

  • Regression Testing
  • QA Automation
  • Manual Testing
  • QA Software & Testing Tools
  • Software QA
  • Automated Testing
  • Software Testing
  • Test Automation Framework
  • Quality Assurance
  • Web Testing
  • Mobile App Testing
  • Test Automation
  • API Testing
  • Mobile QA
  • QA Testing
  • Testing
  • Test Plan
  • Functional Testing
  • Cross-Browser Testing
  • QA Engineering
Mary Anne B.

city of san fernando pampanga, Philippines

$13/hr
5.0
36 jobs

I have a solid experience of more than 16 years now. I worked as a quality analyst and customer support for different companies worldwide. I also have vast experience working as technical support, email support, chat support, text support, order taking, admin assistant, virtual assistant, moderator, and as a sales agent for voice, chat, and email. Flexibility and dedication are just some of my priorities when it comes to my performance. I always make sure that I do my job well and ensure that I always perform each task with dignity and concern. I carry loyalty and integrity in everything that I do. I believe that my experience, reviews, and performance will speak for me. I have vast experience using many different email tools and other tools like Zendesk, Freshdesk, Helpscout, Reamaze, Pipedrive, Front, Excel, Zoho, Shopify, Teeinblue, Gelato, Intercom, Stripe, Infusionsoft, Kajabi, and Salesforce including using other CRM (HubSpot, Freshdesk, Zendesk, Zoho, Pipedrive, Salesforce, Keap, Freshworks)

  • Quality Control
  • Order Processing
  • Email Support
  • Online Chat Support
  • English
  • Order Tracking
  • Customer Support
  • Customer Service
  • Typing
  • Social Media Website
  • Data Entry
  • Administrative Support
  • Technical Support
Shams Ul H.

Bahawalpur, Pakistan

$8/hr
4.5
8 jobs

𝐓𝐢𝐫𝐞𝐝 𝐨𝐟 𝐖𝐫𝐨𝐧𝐠 𝐋𝐚𝐛𝐞𝐥𝐬, 𝐌𝐞𝐬𝐬𝐲 𝐒𝐞𝐠𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 & 𝐏𝐢𝐥𝐢𝐧𝐠 𝐀𝐝𝐦𝐢𝐧 𝐖𝐨𝐫𝐤? 👋 Hey, I'm Shams, a passionate AI Data Annotation Specialist with 10+ years of experience delivering pixel-perfect image & video annotation, clean segmentation data, and reliable VA support for AI/ML teams, startups, enterprise clients, and busy founders - helping them reclaim 30–40+ hours every week. I specialize in AI data labeling and annotation, including image and video annotation, semantic and instance segmentation, and dataset preparation for computer vision projects. I take care of the repetitive, detail-intensive work so you can focus on building better AI models and growing your business. 🚀 🧩 My Core Services (Data Annotation & Image Labeling) 🔹 AI Data Annotation & Labeling ✔️ Image & Video: • Bounding Boxes · Polygon · Polyline · Cuboid · Ellipse · Brush • Semantic Segmentation · Instance Segmentation · Image Masking • Keypoint Annotation · Object Detection · Object Counting • Lane & Line Annotation · Satellite Image Annotation • Image Tagging & Classification ✔️Audio & Text: • Audio Segmentation · Timestamping · Speaker Labeling · Audio Cleaning • Named Entity Recognition (NER) · Text Classification • Sentiment Analysis · Search Relevance · Data & Content Moderation ✔️ Bat Call Analysis & Annotation via Spectrograms ✔️ LiDAR Annotation · 3D Cuboid Annotation · Point Cloud Labeling ✔️ COCO · YOLO · Pascal VOC · CSV 👉 Your model doesn't get smarter with dirty data. Mine never sees any. 🔹 AI & Manual Transcription • Audio & video transcription • Course & lecture transcription • SRT subtitles & closed captions • Speaker diarization & labeling • Verbatim & clean-read transcripts • Timestamps on request 👉 Every word captured. Every speaker identified. Every timestamp exact. 🔹Data Entry & Data Management • Manual & bulk data entry • PDF → Excel · Image → Excel • Data cleaning · Validation · Deduplication • Excel & Google Sheets - formulas, pivot tables, VLOOKUP 👉 Every entry verified, every detail checked · 65+ WPM · 95%+ accuracy. 🔹 General Virtual Assistant & Admin Support • Email & calendar management • File organization & document prep • Customer support & SOP creation • Research, scheduling & daily admin 👉 The behind-the-scenes work that quietly keeps everything running - handled. 🔹 Lead Generation & Web Research •LinkedIn & Sales Navigator prospecting • Email list building & contact enrichment • Geo-targeted & ICP-based lead lists • Company & contact data collection 👉 You get 𝐜𝐥𝐞𝐚𝐧, 𝐯𝐞𝐫𝐢𝐟𝐢𝐞𝐝 𝐝𝐚𝐭𝐚 𝐫𝐞𝐚𝐝𝐲 𝐟𝐨𝐫 𝐨𝐮𝐭𝐫𝐞𝐚𝐜𝐡 - 5,000+ verified leads built. 🔹 CRM Management • HubSpot · Zoho · Salesforce · GoHighLevel · Podio • Contact segmentation · Deduplication · Tagging • Pipeline cleanup · Lead tracking · Reporting 👉 Your records stay clean. Your pipeline stays accurate. 🛠️ My Full Toolkit ✔️ Annotation: CVAT · Roboflow · Labelbox · Label Studio · SuperAnnotate · Supervisely · Darwin V7 · Labelme · Dataloop AI · Scale Pro · Datasaur · VGG Image Annotator ✔️ VA & Admin: Google Workspace · Microsoft Office · Notion · Slack · Asana · ClickUp · Airtable · Canva · ChatGPT ✔️ CRM & Outreach HubSpot · Zoho · GoHighLevel · Podio · LinkedIn Sales Navigator · ApolloDataExcel · Google Sheets · Airtable ✔️ Transcription: Sonix · Turbo Scribe · Scribie · Google Colaboratory 💯 Why Clients Trust Me ✅ CEAP Certified · Certified Data Annotation Specialist ✅ 16,600+ video frames annotated ✅ 13,000+ bio-acoustic recordings labeled ✅ 5,000+ verified leads built · 95%+ data accuracy · 65+ WPM ✅ Detail-oriented, deadline-focused, and proactive in communication ✅ Native-level English - clear communication across US, UK, AU, EU time zones ✅ No follow-ups needed - delivered on time, every time 🤝 I Work Best With 🤖 AI/ML teams - needing clean annotation data at scale 🦇 Wildlife & bio-acoustic researchers - spectrogram annotation 🏢 Businesses - drowning in admin, data entry, or CRM chaos 📣 Marketing teams - building targeted, verified lead lists 🎓 Researchers & educators - needing accurate transcription 🚀 Founders & startups - who need a reliable right hand 📩 Let's Talk If ✔ You need accurate image annotation, video annotation, or segmentation - 10 files or 100,000 ✔ You need precise audio or video transcription with speaker labels and timestamps ✔ You need reliable VA or data entry support - 5 to 30 hrs/week ✔ You want audit-ready, clean work delivered the first time ✔ You're done chasing freelancers who overpromise and underdeliver 📬 Send me a message with your project details. I'll respond within 4 hours with a clear plan, honest timeline, and exact next steps. With respect, Shams Ul H. ✨

  • Data Annotation
  • Data Labeling
  • Virtual Assistance
  • Executive Support
  • AI Model Training
  • Computer Vision
  • Image Segmentation
  • Image Annotation
  • Image Classification
  • Customer Support
  • Machine Learning
  • General Transcription
  • Object Detection
  • Data Collection
  • Quality Assurance
  • Data Entry
  • Lead Generation
  • CVAT
  • Roboflow
  • SuperAnnotate

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Don't just take our word for it

How to Hire Top Quality Control Specialists

How to hire quality control specialists

Quality control specialists serve as the last vanguard of quality between production and distribution. 

So how do you hire quality control specialists? What follows are some tips for finding top quality control specialists on Upwork.

How to shortlist quality control professionals

As you’re browsing available quality control consultants, it can be helpful to develop a shortlist of the professionals you may want to interview. You can screen profiles on criteria such as:

  • Product fit. You want a quality control specialist who is familiar with the types of defects that can occur in the type of product you are producing. 
  • Project experience. Screen candidate profiles for specific skills and experience (e.g., coding quality control software tests to check for bugs).
  • Feedback. Check reviews from past clients for glowing testimonials or red flags that can tell you what it’s like to work with a particular quality control specialist.

How to write an effective quality control job post

With a clear picture of your ideal quality control specialist in mind, it’s time to write that job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project. 

An effective quality control job post should include: 

  • Scope of work: From writing test procedures to performing product reviews, list all the deliverables you’ll need. 
  • Project length: Your job post should indicate whether this is a smaller or larger project. 
  • Background: If you prefer experience with certain industries, types of products, or testing methods, mention this here. 
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Ready to ensure your customers receive quality products? Log in and post your quality control job on Upwork today.

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QUALITY CONTROL SPECIALISTS FAQ

Frequently asked questions

What is quality control?

Quality control is the practice of screening a product before it is shipped or deployed to the consumer. In contrast with quality assurance, which is process-oriented and concerned with defect prevention, quality control is product-oriented and concerned with defect identification.

Here’s a quick overview of the skills you should look for in quality control professionals:

  • Quality control
  • Product testing
  • Product expertise (e.g., software testing, hardware testing)

Why do you want to hire quality control specialists?

The trick to finding top quality control specialists is to identify your needs. Does your company produce a software product that needs to be subjected to SQC (software quality control) procedures prior to deployment? Or is your goal to find a quality expert to help create quality control testing procedures for a physical product? The cost of your project will depend largely on your scope of work and the specific skills needed to bring your project to life. 

How much does it cost to hire a quality control specialist?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced quality control specialist may command higher fees but also work faster, have more-specialized areas of expertise, and deliver higher-quality work.
  • A contractor who is still in the process of building a client base may price their quality control services more competitively. 

Which one is right for you will depend on the specifics of your project.