Valary Njuguna
Summary
Detail-oriented and quality-driven professional with a background in data annotation for AI and machine learning projects. Experienced in handling sensitive, time-critical tasks with a focus on precision, consistency, and confidentiality. Skilled in interpreting visual and textual data, using industry-standard digital tools, and maintaining high performance under tight deadlines. Adept at working independently in fast-paced environments, with proven strengths in accuracy, active listening, and task-focused concentration. Brings a strong commitment to supporting inclusive, purpose-driven services through clear and efficient communication.
Overview
3
3
years of professional experience
Work History
Machine Learning Data Annotator
Samasource
08.2023 - 06.2025
- Responded promptly to incoming phone calls and emails for prompt, professional correspondence.
- Annotated datasets (images, text, audio, or video) to train and improve machine learning models.
- Ensured high accuracy and consistency in labeling data based on strict project guidelines.
- Participated in quality assurance processes by reviewing peer annotations and correcting errors.
- Maintained productivity and quality benchmarks set by the project and organization.
Administrative Assistant
Macharia Gakuo & Co Advocates
05.2022 - 06.2023
- Delivered excellent customer service through prompt responses to client inquiries, addressing concerns effectively, and building strong relationships.
- Answered multi-line phone system, routing calls, delivering messages to staff and greeting visitors.
- Coordinated office supply inventory management, proactively ordering necessary items before depletion to avoid workflow disruptions.
- Ensured accurate record-keeping with diligent data entry and database management for vital company information.
- Maintained confidentiality of sensitive information by adhering to strict privacy policies and implementing secure filing systems.
Education
Bachelor of Science - Business Administration And Management
St. Paul's University
Limuru, Kiambu District, Kenya11-2021
Software Systems
WEBBS INSTITUTE
Nairobi, Nairobi Province, Kenya10-2020
Skills
- Exceptional listening and concentration skills
- Skilled in written and verbal English
- Strong attention to detail
- Proficient in using computers and web-based tools
- Quick to learn and adapt to new software
- Ability to work independently with minimal supervision
- Strong time management and focus during extended tasks
- Commitment to confidentiality and data protection
- Skilled in transcription and customer support
- Clear verbal and written communication
Languages
English
Bilingual or Proficient (C2)
Swahili
Bilingual or Proficient (C2)
Timeline
Machine Learning Data Annotator
Samasource
08.2023 - 06.2025
Administrative Assistant
Macharia Gakuo & Co Advocates
05.2022 - 06.2023
Bachelor of Science - Business Administration And Management
St. Paul's University
Software Systems
WEBBS INSTITUTE
Similar Profiles
Paul ObarePaul Obare
General Labor Worker at SamasourceGeneral Labor Worker at Samasource
Maureen MainaMaureen Maina
Administrative Assistant at SamasourceAdministrative Assistant at Samasource
Antonia WaguraAntonia Wagura
Marketer at SamasourceMarketer at Samasource
Prashant KumarPrashant Kumar
<ul><li>Roles and Responsibilities</li><li>Hiring and team building</li><li>Managing team’s career progression and performance reviews</li><li>Managing Performance improvement plan and firing</li><li>Mentoring</li><li>Product roadmap planning and execution</li><li>Accountability of the entire delivery execution including the risk mitigation planning.</li><li>Stakeholder management</li><li>Adhering to Apple Privacy and Security Guidelines for platform</li><li>Design and implementation of new architectures and solutions to manage all online services for AdXchange in Apple Ads.</li><li>Design and implementation of new architectures and solutions deliver Budget experimentation in Apple Ads</li><li>Design and implementation of new architectures and solutions to manage data for Ad Platform.</li><li>Creating and maintaining all the data and analytics and revenue pipelines for Ad Platforms</li><li>Driving the solution for data ingestions and data processing across Ad platform</li><li>Defining the Strategy for data governance and data access</li><li>Collaboration with business to deliver relevant data and insight for our strategy and decisions.</li><li>Managing storage, processing, copy/synchronization etc. appropriate to scale</li><li>Enabling machine learning and algorithm groups by proving them right frameworks and data</li><li>Advancing team’s design methodology and quality programming practices and evangelize those techniques across Ad platform.</li><li>Deliveries</li><li>Setup 8+ member team to design and deliver Budget Allocation and Budget experimentation.</li><li>Leading Ad Delivery services team, responsible for delivering various capabilities like query understanding, targeting, fraud etc.</li><li>Delivered and Lead Design for observability for budget, and data platform in Ad platform.</li><li>Setup 11+ members high performing team to handle various business needs such as analytics and micro services for Display Advertising as well as Data Platform</li><li>Instrumental in driving Data Platform throughout the SDLC from inception, design, development, testing and deployment.</li><li>Instilled a strong team culture of high-quality delivery by constructive feedback, cross collaboration, focus and motivation.</li><li>Delivered Realtime and Batch Platform with various integrations</li><li>Delivered new DIP design for Data Platform</li><li>Delivered design of all the components of Data processing platform</li><li>Transitioned Display data work to India seamlessly and delivered many critical business impacting features and organizational security initiatives.</li><li>Closely worked with various stakeholders to understand the requirements which resulted into efficient remote work culture.</li><li>Seamless Display execution and set up best practices for 24X7 production on-call.</li><li>Tools and Technologies</li><li>AWS, S3, Kafka, Spark, Hadoop, EMR, Hive, Scoop, Flume, Cassandra, Airflow, Oozie, Gobblin, Schema Store, Icloud, Grafana, Kubernetes, Vertica, Alation, snowflake, druid, Iceberg, Java, Scala, IntelliJ, Oracle, MySql, Git, RIO, Spinnaker, Elastic cache, Grpc, Agile.</li></ul> at Apple - Adplatform<ul><li>Roles and Responsibilities</li><li>Hiring and team building</li><li>Managing team’s career progression and performance reviews</li><li>Managing Performance improvement plan and firing</li><li>Mentoring</li><li>Product roadmap planning and execution</li><li>Accountability of the entire delivery execution including the risk mitigation planning.</li><li>Stakeholder management</li><li>Adhering to Apple Privacy and Security Guidelines for platform</li><li>Design and implementation of new architectures and solutions to manage all online services for AdXchange in Apple Ads.</li><li>Design and implementation of new architectures and solutions deliver Budget experimentation in Apple Ads</li><li>Design and implementation of new architectures and solutions to manage data for Ad Platform.</li><li>Creating and maintaining all the data and analytics and revenue pipelines for Ad Platforms</li><li>Driving the solution for data ingestions and data processing across Ad platform</li><li>Defining the Strategy for data governance and data access</li><li>Collaboration with business to deliver relevant data and insight for our strategy and decisions.</li><li>Managing storage, processing, copy/synchronization etc. appropriate to scale</li><li>Enabling machine learning and algorithm groups by proving them right frameworks and data</li><li>Advancing team’s design methodology and quality programming practices and evangelize those techniques across Ad platform.</li><li>Deliveries</li><li>Setup 8+ member team to design and deliver Budget Allocation and Budget experimentation.</li><li>Leading Ad Delivery services team, responsible for delivering various capabilities like query understanding, targeting, fraud etc.</li><li>Delivered and Lead Design for observability for budget, and data platform in Ad platform.</li><li>Setup 11+ members high performing team to handle various business needs such as analytics and micro services for Display Advertising as well as Data Platform</li><li>Instrumental in driving Data Platform throughout the SDLC from inception, design, development, testing and deployment.</li><li>Instilled a strong team culture of high-quality delivery by constructive feedback, cross collaboration, focus and motivation.</li><li>Delivered Realtime and Batch Platform with various integrations</li><li>Delivered new DIP design for Data Platform</li><li>Delivered design of all the components of Data processing platform</li><li>Transitioned Display data work to India seamlessly and delivered many critical business impacting features and organizational security initiatives.</li><li>Closely worked with various stakeholders to understand the requirements which resulted into efficient remote work culture.</li><li>Seamless Display execution and set up best practices for 24X7 production on-call.</li><li>Tools and Technologies</li><li>AWS, S3, Kafka, Spark, Hadoop, EMR, Hive, Scoop, Flume, Cassandra, Airflow, Oozie, Gobblin, Schema Store, Icloud, Grafana, Kubernetes, Vertica, Alation, snowflake, druid, Iceberg, Java, Scala, IntelliJ, Oracle, MySql, Git, RIO, Spinnaker, Elastic cache, Grpc, Agile.</li></ul> at Apple - Adplatform
Musawenkosi NyawoMusawenkosi Nyawo
Data Scientist | Data Analyst | Machine Learning at FreelancerData Scientist | Data Analyst | Machine Learning at Freelancer