Diana Klaudia Chrostowska

Available to hire

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

Greek, Modern
Fluent
Polish
Fluent
English
Fluent

Work Experience

Junior FrontEnd Developer at Philomath Academy
August 1, 2025 - Present
Supporting and enhancing a live educational platform; following Scrum methodology with daily stand-ups and sprint planning; building new components and features while resolving production issues; collaborating directly with the founder for task prioritization and reviews.
Project Coordinator at STEM Health care
December 31, 2024 - October 3, 2025
Managed teams of up to 30 people in the Italian market and 50 people across Germany, Switzerland, and Austria; coordinated 5-8 projects monthly in Italy and 10+ projects across DACH, ensuring smooth operations in a multinational environment; led cross-functional teams through complex challenges, delivering 10+ projects per month on time; improved collaboration through regular feedback loops, increasing team productivity by 15% and enhancing project quality.
Work Force Manager at Teleperformance
August 31, 2021 - October 3, 2025
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with KPIs and business goals; implemented scheduling systems that significantly improved team efficiency and KPI attainment.
Technical Support Specialist at Teleperformance
July 31, 2019 - October 3, 2025
Provided technical assistance and customer support for mobile devices, troubleshooted issues, and ensured high customer satisfaction; contributed to product development by gathering feedback and identifying recurring issues, resulting in product enhancements that reduced customer complaints by 10%.
Stewardess at Qatar Airways
August 31, 2012 - October 3, 2025
Delivered exceptional customer service on international flights, managing onboard service, meal and beverage distribution, and passenger needs; ensured safety protocols and emergency procedures.
Area Sales Supervisor at UB Wear
August 31, 2012 - October 3, 2025
Managed inventory and sales operations; procurement and sale of clothing items; monitored sales performance and implemented strategies to increase store turnover.
Area Sales Supervisor at UB Wear
March 1, 2016 - October 3, 2025
Sales leadership across markets with a focus on achieving targets and driving revenue.
Junior Front-End Developer at Philomath Academy
August 1, 2025 - Present
Supporting and enhancing a live educational platform. Following Scrum methodology with daily stand-ups and sprint planning. Building new components and features while resolving production issues. Collaborating directly with the founder for task prioritization and review.
Junior Full Stack Developer at DesignCo
June 1, 2025 - October 3, 2025
Develop responsive and interactive web applications using React.js, TypeScript, Tailwind CSS, and Vite. Collaborate with UI/UX designers via Figma to translate visual concepts into fully functional front-end experiences. Build and integrate Supabase back-end services to manage databases, user authentication, and real-time functionality. Design full-stack solutions for client projects, including a car-leasing platform with an admin dashboard for managing listings and leads, and a machinery rental platform with calendars, bookings, and payment tracking. Apply AI-driven solutions using Lovable AI and Windsurf to enhance user experience and automation. Work with modern dev tools: VS Code, Git, and GitHub in a multi-national, agile environment. Ensure scalability and performance optimization through efficient coding practices and cross-functional collaboration.
Project Coordinator at STEM Health care
December 1, 2024 - October 3, 2025
Managed teams of up to 30 people in the Italian market and 50 people across Germany, Switzerland, and Austria. Coordinated 5-8 projects monthly in Italy and 10+ projects across DACH, ensuring smooth operations in a multinational environment. Optimized project delivery timelines, resulting in a 20% reduction in delays by streamlining communication and processes across teams. Led cross-functional teams through complex project challenges, delivering 10+ projects per month on time with no stakeholder complaints. Improved team collaboration and productivity by implementing regular feedback loops, increasing team output by 15% and enhancing project quality.
Work Force Manager at Teleperformance
August 1, 2021 - October 3, 2025
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with key performance indicators (KPIs) and business goals. Successfully created and implemented scheduling systems that significantly improved team efficiency and KPI alignment, contributing to enhanced overall performance.
Content Moderator at Teleperformance
July 1, 2019 - Present
Moderated user-generated content, ensuring compliance with platform guidelines and community standards. Collaborated with cross-functional teams to identify and resolve content-related issues, enhancing user engagement.
Area Sales Supervisor at U.B. Wear
August 1, 2012 - October 3, 2025
Managed a sales team across five second-hand shops and a storage area. Oversaw inventory management, procurement, and sales of clothing items. Monitored sales performance, achieving targets and implementing strategies to increase store turnover.
Technical Support Specialist at Teleperformance
July 1, 2019 - October 3, 2025
Provided technical assistance and customer support for phone-based operations.
Stewardess at Qatar Airways
May 1, 2008 - Present
Delivered exceptional customer service to passengers on international flights, ensuring safety and comfort throughout the journey.
Junior Front-End Developer at Philomath Academy
August 1, 2025 - Present
Supporting and enhancing a live educational platform. Following Scrum methodology with daily stand-ups and sprint planning. Building new components and features while resolving production issues. Collaborating directly with the founder for task prioritization and review.
Junior Full-Stack Developer at DesignCo
June 1, 2025 - October 3, 2025
Developed responsive, interactive web applications using React.js, TypeScript, Tailwind CSS, and Vite. Collaborated with UI/UX designers via Figma to translate concepts into functional front-end experiences. Built and integrated back-end services with Supabase for data storage, authentication, and real-time features. Designed full-stack solutions for client projects including leasing and rental platforms; explored AI-driven enhancements with Lovable AI and Windsurf. Used VS Code, Git, and GitHub in a multinational, agile environment.
Project Coordinator at STEM Health care
December 1, 2024 - October 3, 2025
Managed teams of up to 30 in the Italian market and 50 across Germany, Switzerland and Austria. Coordinated 5-8 projects monthly in Italy and 10+ across DACH, ensuring smooth operations in a multinational environment. Optimized project delivery timelines, reducing delays by streamlining communication and processes. Led cross-functional teams through complex challenges, delivering 10+ projects per month on time. Implemented regular feedback loops to boost team productivity by 15% and improve project quality.
Work Force Manager at Teleperformance
August 1, 2021 - October 3, 2025
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with KPIs and business goals. Created and implemented scheduling systems that significantly improved team efficiency and KPI alignment, contributing to overall performance.
Content Moderator at Teleperformance
July 1, 2019 - October 3, 2025
Moderated user-generated content, ensuring compliance with platform guidelines and community standards. Collaborated with cross-functional teams to identify and resolve content-related issues, enhancing user engagement.
Technical Support Specialist at Teleperformance
July 1, 2019 - October 3, 2025
Provided technical assistance and customer support for mobile devices, troubleshooting issues, and maintaining high customer satisfaction. Collected customer feedback to identify recurring issues, contributing to product improvements and a reduction in complaints.
Stewardess at Qatar Airways
August 1, 2012 - October 3, 2025
Delivered exceptional customer service on international flights, ensuring safety and comfort. Managed in-flight service including food and beverage distribution and promptly addressing passenger needs, while adhering to safety protocols and emergency procedures.
Junior Front-End Developer at Philomath Academy
August 1, 2025 - November 1, 2025
Supporting and enhancing a live educational platform; following Scrum methodology with daily stand-ups and sprint planning; building new components and features while resolving production issues; collaborating directly with the founder for task prioritization and review.
Junior Full Stack Developer at DesignCo
June 30, 2025 - June 30, 2025
Develop responsive and interactive web applications using React.js, TypeScript, Tailwind CSS, and Vite; collaborate with UI/UX designers via Figma; build and integrate Supabase back-end services; design and implement full-stack solutions for client projects, including car leasing and machinery rental platforms with admin dashboards, calendars, booking management, and payment tracking; apply AI-driven solutions to enhance user experience and automation.
Project Coordinator at STEM Health Care
December 31, 2024 - December 31, 2024
Managed teams of up to 30 people in Italy and 50 across Germany, Switzerland, and Austria; coordinated 5-8 projects monthly in Italy and 10+ projects across DACH; ensured smooth operations, optimized deliver timelines, and led cross-functional teams through complex challenges; delivered 10+ projects per month on time with minimal stakeholder complaints; improved collaboration and efficiency through regular feedback loops.
Workforce Manager at Teleperformance
August 31, 2021 - August 31, 2021
Developed and optimized scheduling strategies for teams across multiple projects; ensured alignment with KPIs and business goals; implemented scheduling systems to enhance efficiency.
Content Moderator at Teleperformance
July 1, 2019 - November 1, 2025
Monitored user-generated content, ensuring compliance with platform guidelines and community standards; collaborated with cross-functional teams to identify and resolve content-related issues, improving user engagement.
Technical Support Specialist at Teleperformance
July 31, 2019 - July 31, 2019
Provided technical assistance and customer support for mobile devices, troubleshooting issues, and maintaining high customer satisfaction; contributed to product development by gathering customer feedback and identifying recurring issues.
Stewardess at Qatar Airways
August 31, 2012 - August 31, 2012
Delivered exceptional customer service to passengers on international flights; managed in-flight service, including food and beverage distribution; addressed passenger needs promptly and ensured compliance with safety protocols.
Junior FrontEnd Developer at PhiloMath Academy
August 1, 2025 - November 5, 2025
Supporting and enhancing a live educational platform. Following Scrum methodology with daily stand-ups and sprint planning. Building new components and features while resolving production issues. Collaborating directly with the founder for task prioritization and review.
Junior Full Stack Developer at DesignCo
June 1, 2025 - June 1, 2025
Develop responsive and interactive web applications using React.js, TypeScript, Tailwind CSS, and Vite. Collaborate with UI/UX designers via Figma to translate visual concepts into fully functional front-end experiences. Build and integrate Supabase back-end services to manage databases, user authentication, and real-time functionality. Design and implement full-stack solutions for client projects, including a car leasing platform with an admin dashboard and a machine rental platform with booking management and payments. Apply AI-driven solutions using tools like Lovable AI and Windsurf to enhance user experience and automation.
Project Coordinator at STEM Health care
December 1, 2024 - December 1, 2024
Managed teams of up to 30 people in the Italian market and 50 people across Germany, Switzerland, and Austria. Coordinated 5-8 projects monthly in Italy and 10+ projects across DACH, ensuring smooth operations in a multinational environment. Optimized project delivery timelines, reducing delays by 20% by streamlining communications and processes across teams. Led cross-functional teams through complex project challenges, delivering 10+ projects per month on time with no major blockers. Improved team collaboration and efficiency by implementing regular feedback loops, increasing team productivity by 15% and overall project quality.
Workforce Manager at Teleperformance
August 1, 2021 - August 1, 2021
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with KPIs and business goals. Created and implemented scheduling systems that significantly improved team efficiency and KPI alignment.
Content Moderator at Teleperformance
July 1, 2022 - July 1, 2022
Moderated user-generated content, ensuring compliance with platform guidelines and community standards. Collaborated with cross-functional teams to identify and resolve content-related issues, enhancing user engagement.
Technical Support Specialist at Teleperformance
July 1, 2019 - July 1, 2019
Provided technical assistance and customer support for mobile devices, troubleshooting issues and ensuring high customer satisfaction. Contributed to product development by gathering customer feedback and identifying recurring issues, resulting in product enhancements that reduced customer complaints by 10%.
Area Sales Supervisor at UB Wear
August 1, 2012 - August 1, 2012
Managed sales team across five second-hand shops and a storage area; oversaw weekly inventory, procurement, and sales performance. Monitored sales performance, ensured targets were met, and implemented strategies to increase store turnover.
St ew ard ess at Qatar Airways
August 1, 2012 - August 1, 2012
Delivered exceptional customer service to passengers on international flights, ensuring safety and comfort throughout the journey. Managed in-flight service, including food and beverage distribution, and addressed passenger needs promptly. Ensured compliance with airline safety protocols and emergency procedures.
Work Force Manager at TelePerformance
August 1, 2021 - August 1, 2021
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with KPIs and business goals. Created and implemented scheduling systems that significantly improved team efficiency and alignment with KPIs, contributing to enhanced overall performance.
Area Sales Supervisor at U.B. Wear
March 1, 2016 - March 1, 2016
Managed sales people across 5 second-hand shops and a storage area, ensuring smooth day-to-day operations. Oversaw inventory, including procurement and sale of clothing items. Monitored sales performance, ensuring targets were met, and implemented strategies to increase store turnover.
Stewardess at Qatar Airways
August 1, 2012 - August 1, 2012
Delivered exceptional customer service to passengers on international flights, ensuring safety and comfort throughout the journey. Managed in-flight service including food and beverage distribution, and addressed passenger needs promptly. Ensured compliance with airline safety protocols and emergency procedures.
Project Coordinator at STEM Health Care
August 1, 2021 - December 31, 2024
Managed teams of up to 30 people in the Italian market and 50 across Germany, Switzerland, and Austria. Coordinated 5-8 projects monthly in Italy and 10+ projects across DACH, ensuring smooth operations in a multinational environment. Led cross-functional teams through complex challenges, delivering 10+ projects per month on time with no stakeholder complaints. Improved team collaboration by implementing regular feedback loops, increasing productivity by 15%, and enhancing project quality.
Work Force Manager at Teleperformance
August 1, 2020 - August 1, 2021
Developed and optimized scheduling strategies for multi-project teams, ensuring alignment with KPIs and business goals. Implemented scheduling systems that significantly improved team efficiency and KPI alignment.
Technical Support Specialist at Teleperformance
July 1, 2016 - July 1, 2019
Provided technical assistance and customer support for mobile phones, troubleshooting issues and ensuring high customer satisfaction. Contributed to product development by gathering customer feedback and identifying recurring issues, leading to product improvements that reduced customer complaints by 10%.
Area Sales Supervisor at U.B. Wear
February 1, 2013 - March 1, 2016
Managed a team of sales personnel across five second-hand shops and a storage area, ensuring smooth daily operations. Oversaw inventory management, procurement, and sales; monitored performance against targets and implemented strategies to increase store turnover.
Workforce Manager at Teleperformance
August 1, 2020 - August 31, 2021
Developed and optimized scheduling strategies for teams across multiple projects, ensuring alignment with KPIs and business goals. Implemented scheduling systems that significantly improved team efficiency and KPI attainment.
Frontend Developer at FlameVerse AI
February 1, 2026 - Present
Contributing to FlameVerse, an early-stage AI-driven, gamified career platform. Part of the foundational build, shaping product vision, structure, and overall direction from the ground up.
Frontend Developer at Philomath Academy
August 1, 2025 - Present
Contributing pro bono to the stabilization and continuous improvement of a live educational platform. Identifying, debugging, and resolving frontend production issues. Implementing UI fixes and small feature enhancements based on real user feedback. Collaborating directly with the platform founder on task prioritization and technical decisions. Working in an agile setup with sprint planning and daily stand-ups.
Project Coordinator at STEM HealthCare
August 1, 2021 - December 1, 2024
Managed teams of up to 30 people in the Italian market and 50 people across Germany, Switzerland, and Austria. Coordinated 5-8 projects monthly in Italy and 10+ projects across DACH, ensuring smooth operations in a multinational environment.

Education

Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 1, 2024
Cabin Crew Attestation at AST Airline Services Training
May 1, 2008 - March 1, 2010
Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 1, 2024
Cabin Crew Attestation at AST Airline Services Training
May 1, 2008 - May 1, 2008
High School Graduate at High School
January 11, 2030 - October 3, 2025
Certificate in Full Stack Development at Social Hackers Academy
October 1, 2023 - May 1, 2024
Cabin Crew Attestation at AST Airline Services Training
October 1, 2008 - March 1, 2010
High School Diploma at Athens, Greece
January 11, 2030 - May 1, 2008
Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 31, 2024
Cabin Crew Attestation at AST Airline Services Training
October 1, 2008 - March 31, 2010
High School Graduate at Athens, Greece
January 11, 2030 - May 31, 2008
Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 1, 2024
Coding Lessons at Code 4SP
October 1, 2023 - December 1, 2024
Cabin Crew Attestation at AST Airline Services Training
May 1, 2008 - May 1, 2008
Certificate at Social Hackers Academy
October 1, 2023 - May 1, 2024
Cabin Crew Attestation at AST Airline Services Training
October 1, 2008 - March 1, 2010
High School Graduation at Athens High School
January 11, 2030 - May 1, 2008
Full Stack Developer at Social Hackers Academy, Athens, Greece
October 1, 2023 - May 1, 2024
Airline Services Training at AST Airline Services Training, Athens, Greece
May 1, 2008 - March 1, 2010
High School Graduate at Athens, Greece
May 1, 2008 - May 1, 2008
Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 31, 2024
Cabin Crew Attestation at AST Airline Services Training
May 1, 2008 - May 1, 2008
Full Stack Developer at Social Hackers Academy
October 1, 2023 - May 1, 2024
Cabin Crew Attestation at AST Airline Services Training
October 1, 2008 - March 1, 2010
High School Diploma at Athens, Greece
January 11, 2030 - May 1, 2008

Qualifications

Full Stack Developer Certification
October 1, 2023 - May 1, 2024
Cabin Crew Attestation
May 1, 2008 - October 3, 2025
Cabin Crew Attestation
October 1, 2008 - March 1, 2010
High School Diploma
January 11, 2030 - May 1, 2008
Cabin Crew Attestation
October 1, 2008 - March 31, 2010
High School Graduate
January 11, 2030 - May 31, 2008
High School Graduate
January 11, 2030 - November 5, 2025
Cabin Crew Attestation
May 1, 2008 - May 1, 2008
Cabin Crew Attestation
October 1, 2008 - March 1, 2010
High School Diploma
January 11, 2030 - May 1, 2008
Full Stack Developer Certificate
October 1, 2023 - May 1, 2024
Airline Services Training
May 1, 2008 - March 1, 2010
High School Graduate
January 1, 2008 - December 31, 2008
Cabin Crew Attestation
May 1, 2008 - February 2, 2026
Full Stack Developer
October 1, 2023 - May 1, 2024
Cabin Crew Attestation
October 1, 2008 - March 1, 2010

Industry Experience

Software & Internet, Professional Services, Healthcare, Education, Media & Entertainment, Travel & Hospitality, Telecommunications