Rachel Mercer-AI Data Trainer & Business Data Analyst
Check rate
Experience
AI Data Trainer / Model Evaluation Specialist
Freelance
- Evaluated, scored, and refined Large Language Model (LLM) outputs across reasoning, safety, alignment, and hallucination reduction.
- Designed and tested complex multi-turn prompt instructions to evaluate model capabilities in technical, analytical, and logic-based domains.
- Identified edge cases, factual inaccuracies, and subtle reasoning flaws, providing granular qualitative feedback to improve RLHF model performance.
- Maintained rigorous data quality standards and strict adherence to evolving project evaluation rubrics.
Business Support Analyst
Orbis Education and Care
- Designed, automated, and delivered weekly executive reporting suites analyzing key service delivery, staffing, and operational performance metrics.
- Built custom Excel VBA automation tools to streamline internal database tracking, reducing manual reporting overhead by 85%.
- Audited complex workforce and operational datasets, collaborating with senior leadership, HR, and Finance to ensure data integrity and site compliance.
Logistics Administrator
GJ Paper Consulting
Managed the supply and distribution of paper products from production facilities in Germany, Russia and Turkey to customers in the UK and Israel. Forecasted customer requirements and worked with international production teams to ensure supply met expected demand for future months.
Maintained accurate inventory records, monitored stock movements and analysed demand and supply data to identify future requirements and support purchasing and production decisions. Managed customer accounts and developed strong working relationships, acting as a key point of contact between customers and production teams.
Responsible for creating and processing invoices, sales orders, purchase orders and credit notes, alongside general office administration and technical support.
A significant part of the role involved improving internal processes. I designed Excel macros and basic VBA automation to simplify and improve the recording of stock movements, reducing manual processes and helping maintain more accurate inventory information. I also developed and updated material accounting processes and procedures, using data analysis to improve visibility of demand, supply and stock levels.
This role gave me practical experience in Excel, data entry and analysis, inventory management, demand forecasting, supply chain coordination, process improvement, VBA automation, customer account management and international operations.
VIP Account Manager
ProgressPlay Ltd
Provided high-level customer support to VIP customers through live chat, email and telephone, building strong relationships and identifying individual customer needs. Worked in a target-driven environment with monthly sales targets of €30,000, consistently meeting and frequently exceeding targets.
Generated sales opportunities by developing and implementing targeted marketing and sales offers and campaigns, using customer information and sales data to identify opportunities and improve engagement.
Produced and analysed sales reports using Excel and CRM systems, monitoring customer activity, sales performance and trends to support decision-making and identify opportunities for further sales.
Carried out responsible gaming and customer protection duties, ensuring interactions and account activity were handled in accordance with relevant policies and procedures.
The role required excellent communication, commercial awareness and attention to detail, alongside the ability to work effectively under pressure. Worked a flexible shift pattern including late nights, weekends and high-volume periods.
Recruitment & Operations Analyst / Support Consultant
Quality Personnel Services
- Analyzed candidate pipelines, job market data, and conversion metrics to optimize recruitment strategies for engineering and technical sectors.
- Managed database hygiene across ATS platforms (ITRIS, Eploy), maintaining accurate candidate records and operational compliance logs.
Recruitment Resourcer & Data Project Lead
ByBox
- Spearheaded a major operational workforce data analysis project analyzing temporary staffing hours, overtime patterns, and agency cost structures.
- Delivered data-backed insights to senior leadership, resulting in optimized temporary staffing rotas and saving over £500,000.
Industry experience
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Experienced in Information Technology, Professional Services, Education, Healthcare, Transportation, and Manufacturing.
Business area experience
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Experienced in Business Intelligence, Operations, Human Resources, Customer Service, Information Technology, and Quality Assurance.
Summary
An analytical, detail-oriented Data Analyst and AI Model Evaluation Specialist with proven experience across LLM training, process automation, and operational analytics. Combines hands-on expertise in prompt engineering, model safety benchmarking, and qualitative data evaluation with advanced data manipulation capabilities (Excel VBA, SQL, Python). Track record of identifying process inefficiencies, building automated reporting workflows, and delivering cost-saving workforce analytics. Adept at transforming complex datasets into actionable executive insights while maintaining rigorous standards of quality control and compliance.
Skills
- Ai & Llm Training: Prompt Engineering, Rlhf Evaluation, Model Benchmarking, Safety & Bias Testing.
- Data Analytics: Excel (Vba/Macros), Sql, Python, Statistical Reporting, Trend Analysis.
- Process Optimisation: Workflow Automation, Kpi Tracking, Audit Compliance, Data Quality Control.
- Stakeholder Reporting: Dashboard Creation, Executive Presentations, Cross-Functional Alignment.
Languages
Education
University of East Anglia
BA (Hons) American Studies · American Studies · United Kingdom · First Class – 72.3%
I specialised primarily in American history, politics, political institutions and contemporary social issues. My degree developed strong skills in research, critical analysis, evaluating sources, identifying patterns and bias, and presenting complex information clearly and objectively.
My dissertation examined sexism and gender bias during the 2008 US presidential election, comparing the experiences of Hillary Clinton and Sarah Palin. I explored how both women faced significant gender-based scrutiny, but in very different political and media contexts, and analysed the ways gender, political identity, media representation and expectations of female politicians interacted during the campaign.
The research involved analysing a wide range of political and historical sources, comparing competing perspectives, assessing evidence and developing an evidence-based argument. This gave me particularly strong experience in desk research, qualitative analysis, political and historical research, source evaluation, identifying bias and communicating complex findings clearly.
Vandyke Upper School
A-Levels · French, German, English Literature, History and General Studies · Leighton Buzzard, United Kingdom · 3 As, 1 B
Certifications & licenses
REC Level 3 Certificate in Recruitment Practice (L3 CertRP)
Statistics
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