Hire the Best Data Annotators

I provide annotation services with precision and data consistency. Delivering labeled datasets at 98%+ accuracy. In building an AI system, the quality of your training data is everything and that is where I come in. I am an AI Data Annotator specialist in image, Video, audio and speech labeling with over 6 years of experience helping machine learning teams and AI companies get their training data right. I have worked across computer vision, speech recognition, generative AI, and multimodal systems, and I understand that bad annotation does not just slow down a project, it breaks the model. What I actually do goes beyond clicking and labeling. I help teams design labeling workflows, write annotation guidelines that make sense, set up QA systems, and coordinate annotation teams on large-scale projects. I have delivered everything from small pilot datasets to massive production-ready annotation operations and I know how to keep quality consistent. My specialty: 🔸 Audio & Speech Transcription & ASR labeling Speaker diarization Sound event tagging Accent and language diversity annotation 🔸 Computer Vision & Image Bounding boxes, polygons, segmentation Keypoints and object tracking Semantic & instance segmentation 🔸 Autonomous Vehicles Lane marking, drivable areas Traffic signs, LiDAR & video annotation 🔸 LLM Alignment RLHF & RLAIF Prompt and response evaluation 🔸 Healthcare AI Medical image labeling High-precision QA workflows 🔸 E-commerce Product categorization, attribute tagging Catalog normalization Tools I have worked with: CVAT Roboflow LabelBox Label Studio VOTT V7 (Darwin) SuperAnnotate Supervisely Annotation Pro Google Sheet Microsoft 365 DataLoop and more If you need someone who understands both the technical and operational side of AI data labeling Let's talk. I am ready to add value from day one.

Most AI projects fail because of two things: messy training data, slow and manual workflows. I fix both. I am a data annotation/labeling and automation workflow specialist with over 5 years of experience building, labeling, and optimizing datasets for machine learning models. I sit exactly between the raw data and the pipeline engineering. By combining local Python environments with advanced dev tools like Claude Code and Codex I don't just label or annotate data; I write the code to automate the pipeline. What I execute: • Pipeline Automation: Build custom web tools, API integrations, and agentic workflows using n8n, Make and Zapier to eliminate manual data bottlenecks. • Data Scripting: Write custom Python scripts (OpenCV, NumPy, Pandas) to parse, clean, transform, and format massive datasets. • High-Precision Annotation & Labeling: Deliver flawless 2D/3D bounding boxes, polygon/semantic segmentation, LiDAR point clouds, and multi-camera video tracking. • GenAI & LLMs: Handle RLHF response ranking, preference modeling, prompt engineering, and Human-in-the-Loop (HITL) validation. • Core Tools: CVAT, Label Studio, Roboflow, and Scale AI. I’ve logged thousands of hours working on autonomous driving data, multi-camera tracking systems, and text classification models. I work independently, follow strict guidelines, and maintain a 99%+ accuracy baseline. If you have a workflow bottleneck that needs engineering or a critical dataset that needs to be annotated or labeled for your next sprint, send me an invite and let’s talk.

I lead a team of 7 including dedicated QA reviewers and trained annotators helping AI and Machine Learning teams turn raw images and video into clean, model-ready training data through accurate data annotation, data labeling, and dataset preparation for computer vision projects, from small pilot batches to large-scale production datasets. Core Services Image Annotation: bounding boxes, polygon & semantic segmentation, instance segmentation, keypoints/landmarks Video Annotation: frame-by-frame labeling, object tracking, multi-object tracking Text Annotation: classification, NLP tagging, entity labeling Object Detection & Classification: custom model training support (YOLO) Dataset QA & Validation: accuracy review, consistency checks, error correction Format Delivery: COCO, YOLO, Pascal VOC, JSON, CSV matched to your pipeline Tools & Platforms CVAT, Roboflow, Label Studio, LabelImg, LabelMe plus custom annotation tools when a project needs a tailored workflow. How My Team Works My team of 7 annotators and QA reviewers follows a structured internal QA pass before anything reaches you; every batch is reviewed for accuracy and consistency before final delivery. As the lead, I personally review tool setup, labeling guidelines, and edge cases so quality stays consistent even at volume. Beyond Annotation I also have hands-on Machine Learning and Computer Vision experience (TensorFlow, PyTorch, YOLO, model training and evaluation), so I understand how labeling decisions affect downstream model performance not just "the labeling," but the data that actually makes your model work. If you need reliable image, video, or text annotation for a computer vision or ML project send an invite and let's talk about your dataset.

Hi! I’m Danica Joy Goyal from the Philippines, a dedicated freelancer with experience in data entry, quality, reports, image annotation, internet research, and compliance moderation. I also have 5 years of corporate experience as a Data Operator and Quality Analyst at EXELA Technologies. I’m detail-oriented, reliable, and committed to delivering quality work. I’m also open to any type of work, even if it’s something new to me. I’m a fast learner and enjoy researching and studying new tools through YouTube and online resources whenever a client requires them. I love learning how different tools and systems help businesses grow, and I’m always excited to expand my skills. Looking forward to working with you!

Are you searching for a data annotator who combines expertise, precision, and a proven track record? Look no further. With over 6 years of experience as an Upwork Top-Rated data annotator, I specialize in image, video, text, and audio annotation, ensuring your data is accurate, detailed, and ready for actionable insights. I have annotated a diverse range of data, from images of cars, solar panels, and structures to audio clips of music and sounds, and videos featuring moving vehicles and buildings. My experience spans various annotation tools, including bounding boxes, polygons, pixel-wise, and line tools, ensuring that I can handle any type of annotation project with ease. In addition to visual data, I excel in text annotation, including review analysis, product classification, categorization of articles, claims, tweets, and URLs. Whether you need precise categorization or nuanced interpretation, I bring clarity and consistency to your text data. As an NLP Data Linguist, I offer Reinforcement Learning from Human Feedback (RLHF) and Supervised Fine-Tuning (SFT) alignment tasks. My services include rating and ranking user prompts and LLM responses, selecting optimal LLM outputs, and more, helping to fine-tune your AI models for better performance. I am well-versed in using leading annotation software, such as: Labelbox LabelImg SuperAnnotate Doccano CrowdAI CVAT Microsoft Excel & Google Sheets Customized client software (NDA protected) Custom Deliverables in Your Preferred Format I understand that each project is unique, and I offer flexible delivery options in formats like YOLO, Pascal VOC, JSON, and more, ensuring seamless integration with your existing workflows. I also currently lead a team of skilled data annotators, consistently delivering a precision rate of over 98% across various projects. Our commitment to quality and client satisfaction is reflected in our outstanding reviews and repeat business from clients. Your satisfaction is my top priority. I work closely with you to understand your annotation guidelines, ask pertinent questions, and ensure that your project is delivered to your exact specifications. I have successfully collaborated with startups, large enterprises, and solopreneurs across diverse industries, adapting to their unique needs and delivering top-quality results. If you’re in need of an experienced and reliable data annotator who consistently delivers quality work, I’m here to help. Click the 'Invite' button, and let’s discuss how I can support your project and help you achieve your goals.

I am a detail-oriented AI Data Annotation and Data Entry Specialist with experience in AI Training Data, Data Labeling, QA Review, Audio Transcription, Lead Generation, and Data Validation. I have worked on projects involving AI-assisted transcription, annotation review, web research, and business data verification while maintaining high accuracy and quality standards. I am proficient in Google Sheets, Microsoft Excel, LinkedIn Sales Navigator, CRM management, and online research. My focus is always on delivering accurate, organized, and reliable results while following project guidelines and meeting deadlines. I am passionate about helping businesses build high-quality datasets, generate qualified leads, and manage data efficiently. If you're looking for a reliable freelancer who values accuracy, communication, and consistency, I'd be happy to help.