Justyna Bartnicka
Leeds
Summary
Detail-oriented professional with 5+ years leading teams in fast-paced environments, transitioning into AI training. Experienced in process optimization, quality control, data tracking, and real-time problem-solving. Proficient in using LLMs (ChatGPT, Grok) for tasks and eager to apply analytical skills to evaluate AI outputs, provide feedback, and improve model performance.
Overview
10
10
years of professional experience
3
3
years of post-secondary education
Work history
Customer Assistant/Baker
Lidl
2025.01 - 2026.04
- Optimized daily baking workflows through accurate inventory tracking and process adjustments, reducing preparation time while maintaining consistent quality standards — directly transferable to refining AI training data and outputs.
- Conducted real-time quality checks on products and service, identifying and correcting inconsistencies to uphold high standards.
Shift Leader
Lidl
2023.08 - 2024.12
- Led teams of 10+ members in a high-volume retail setting, coordinating tasks to meet daily sales targets and improve operational efficiency.
- Analysed shift performance data and implemented adjustments to streamline processes.
Kitchen Team Leader
Greene King
2022.09 - 2023.08
- Supervised restaurant teams during busy shifts, implementing strategies to enhance service speed and customer satisfaction.
- Resolved operational challenges in real-time, promoting team problem-solving and attention to detail.
Line Chef
Wagamama
2022.02 - 2023.08
- Prepared high-quality dishes in a high-pressure kitchen, adhering to precise recipe and timing.
- Collaborated with kitchen team to streamline prep processes, reducing errors through detailed checks.
Kitchen Team Leader
Butlin's Restaurant
2021.01 - 2021.12
- Directed kitchen teams to deliver exceptional service, managing product inventory and workflows to cut costs through efficient resource allocation.
- Analysed daily operations data to identify improvements, enhancing overall efficiency.
Sales Coordinator
GT SportsCar & Martex
Poland
2019.01 - 2021.03
- Coordinated sales activities across physical and digital channels, using digital tools for accurate tracking, reporting, and data handling.
- Supported business growth by preparing and organizing sales campaigns.
Team Leader (Front of House)
Butlin's Restaurant
2016.09 - 2020.01
- Led front-of-house teams serving 500+ guests daily, maintaining high service standards and achieving strong customer satisfaction.
- Implemented training protocols and delivered performance feedback, resulting in improved team performance and service quality.
Education
Biotechnology
University of Wroclaw
Poland 2012.09 - 2015.06
Skills
- AI & Prompting: Prompt engineering basics, LLM interaction (ChatGPT, Grok), AI output evaluation, response comparison & feedback, data quality assessment
- Programming & Tools: Python (beginner – variables, loops, conditionals, functions, basic scripting/automation via Udemy), Microsoft Excel (intermediate – trend analysis, data tracking), Zonal Aztec POS (advanced – tech interfaces & data entry)
ADDITIONAL STRENGTHS
- Quality assurance, analytical reasoning, attention to detail, process optimization, team training & performance feedback, guideline adherence, problem-solving.
- Strong ability to follow complex instructions consistently and provide clear, structured feedback — essential for AI model training and evaluation.
- Proven track record of analysing operational data and making improvements in dynamic environments.
- Fast learner with adaptability gained from diverse roles in hospitality and retail.
- Strong fact-checking skills with a keen eye for accuracy and consistency, ensuring reliable outputs in high-pressure environments.
Timeline
Customer Assistant/Baker
Lidl
2025.01 - 2026.04
Shift Leader
Lidl
2023.08 - 2024.12
Kitchen Team Leader
Greene King
2022.09 - 2023.08
Line Chef
Wagamama
2022.02 - 2023.08
Kitchen Team Leader
Butlin's Restaurant
2021.01 - 2021.12
Sales Coordinator
GT SportsCar & Martex
2019.01 - 2021.03
Team Leader (Front of House)
Butlin's Restaurant
2016.09 - 2020.01
Biotechnology
University of Wroclaw
2012.09 - 2015.06