PROBLEM DEFINITION A Europe-based business service outsourcing company sought assistance from a multilingual company to assess candidates' language skills in several languages for job purposes. This business service outsourcing company operating across Europe required a comprehensive and accurate language testing solution to evaluate candidates' language proficiency in various European languages. The aim was to develop a comprehensive language skill testing approach following the Common European Framework of Reference (CERF) scale, covering reading, writing, speaking, and listening. The company aimed to conduct around 100 tests per month to ensure the efficient recruitment of multilingual talent. The Business Service Outsourcing (BSO) company, headquartered in Europe, specializes in providing customer support, back-office services, and IT solutions for clients across different regions. To maintain a high standard of service quality and effectively serve a diverse clientele, proficiency in multiple languages was a crucial requirement for their employees. The company regularly hired new employees and needed a robust and efficient language assessment system to gauge the candidates' language skills accurately. They required employees who could communicate effectively in multiple languages, including but not limited to English, French, Spanish, German, and Italian. They needed to Conduct 100 language proficiency tests per month posed logistical challenges, including test creation, administration, and evaluation. The assessments needed to be consistent and accurate, aligning with the CEFR scale to ensure uniform language skill evaluation. The client collaborated with PIE Multilingual company, a language testing service provider to design a comprehensive language assessment system using the CEFR scale. The solution incorporated four main methods based on Reading, Writing, Speaking, and Listening to evaluate candidates' language proficiency. We designed a reading assessment to evaluate candidates' ability to understand written content in the respective languages. This involved providing passages or text excerpts followed by comprehension questions to assess candidates' comprehension and vocabulary. Our team conducted a writing assessment aimed at evaluating candidates' ability to construct coherent written sentences and express ideas accurately in the target languages. Candidates were given prompts or topics to write essays or short paragraphs, allowing for assessment of their grammar, vocabulary, and overall writing skills. Our company conducted a speaking assessment using video or voice calls, where candidates engaged in conversations or responded to prompts. The speaking assessment involved interactive sessions where candidates engaged in conversations, role-plays, or oral presentations in the target languages. Our trained assessors evaluated candidates based on their pronunciation, fluency, and ability to communicate effectively. We administered Listening comprehension tests using audio clips or recordings. The listening assessment focused on evaluating candidates' ability to comprehend spoken language. Candidates listened to audio recordings or live conversations and answered questions based on what they heard, assessing their listening comprehension skills.