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Joshua Dunyo

@joshuadunyo

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Data Quality Analyst | Data Validation, SQL, Automation

United Kingdom

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What I'm looking for

I'm looking for fully remote roles in data quality, data validation, or AI data engineering — environments where I can apply systematic QA thinking while growing my Python and ML capabilities. I want to be part of a strong technical team that values automation over manual processes and invests in growth.

Data Quality Analyst with experience validating large-scale datasets across NHS organisations. I've built automated validation workflows using SQL, Power Query, and Excel to catch data issues before they propagate — replacing manual spot-checks with systematic QA processes. Background includes cross-source verification, pipeline validation, and translating data requirements between technical and non-technical teams. Currently deepening Python and ML skills to move into AI-driven data quality engineering.

Experience

Work history, roles, and key accomplishments

Current

Data Validation Specialist

Current

NHS Supply Chain

Oct 2025 - Present (2 months)

Validated bulk data requests for completeness, contradictions, and invalid references before performing system updates

Built Power Query validation workflows to systematically data consistency — replacing ad-hoc spot-checking with automated QA

Wrote SQL extracts from Oracle Cloud

Proactively flagging systematic issues before they reached production systems

Data Automation SQL Excel Power Query Oracle Cloud Data Quality Python Supply Chain Management Excel Google Sheet Excel Sheets Excel (Formulas PowerQuery ETL

Accounts and Data Associate

BrighterTeam

Jan 2025 - Sep 2025 (8 months)

i helped get a cleaning company up and running from ground up, managing and working with invoice data to account for payment discrepancies

Python JavaScript Data Analysis Quickbooks Online

Data Quality Analyst

NHS England

Apr 2022 - Dec 2024 (2 years 8 months)

Validated data pipeline outputs, ensuring accuracy before dissemination

Developed custom Excel formulas to QA calculations against source pipelines, catching discrepancies

Automated data formatting and quality checks using Power Query

Wrote and executed SQL queries against underlying schemas with reference table joins to verify data integrity

Performed data quality checks using R scripts

Healthcare Assistant

Dukeries Healthcare

Jul 2018 - Oct 2019 (1 year 3 months)

Provided compassionate care for 15+ individuals with alcohol-related brain damage, maintained 100% accurate patient records, and implemented personalised routines that improved patient outcomes.

Patient Care Medication Management Record keeping Attention To Detail

Hospitality Waiter

Leeds United Football Club

Jun 2016 - Jun 2018 (2 years)

Managed VIP hospitality service for 50+ guests during Premier League matches, trained new staff, and maintained 95%+ customer satisfaction through efficient, high-pressure service delivery.

Customer Service VIP High Pressure Service

Education

Degrees, certifications, and relevant coursework

University of York

Master of Public Health, Public Health

2021 - 2022

Activities and societies: Modules in randomized controlled trials, health research methods, health statistics, epidemiology; dissertation research and systematic review.

Master of Public Health with a dissertation conducting a systematic review on group-based exercise therapy for alcohol dependence, including database searching, screening, data extraction, and evidence synthesis.

University of Bradford

Bachelor of Science, Biomedical Science

2016 - 2019

Grade: 2:1

Activities and societies: Modules across cell and molecular biology, clinical biochemistry, medical microbiology, immunology, hematology, pathology, genetics and genomic medicine.

Bachelor of Science in Biomedical Science (IBMS accredited) with a dissertation on silicone adhesives in ostomy care involving study organisation, data collection, and confidential data handling.