Microsoft Office Suite
Orlando Guerrero
Freelancer
Santiago De Cali,VALLE DEL CAUCA, COLOMBIA
Work Preference
Summary
As a professional working within international academic and institutional frameworks, I bring strong analytical, organizational, and coordination skills developed through roles that require precision, compliance, and results-driven execution. My experience includes designing and implementing structured programs aligned with international standards, managing documentation and records, coordinating teams, and ensuring the effective use of technology to support operational objectives.
With over eight years of experience in communication, training, and program development across on-site and remote environments, I have supported performance evaluation, stakeholder engagement, and continuous improvement initiatives. I have collaborated with multidisciplinary teams, contributed to sustainability and social responsibility projects, and supported leadership through planning, reporting, and process optimization. Recognized for my professionalism, adaptability, and attention to detail, I thrive in dynamic environments where organization, discretion, and strategic support are essential.
Overview
15
15
years of professional experience
8
8
years of post-secondary education
4
4
Certificates
Work History
IB Chemistry Teacher
Colegio Berchmans
Cali, Colombia
08.2024 - Current
- Teach both theoretical and practical aspects of chemistry according to the IB Diploma Programme framework, focusing on experimental sciences and inquiry-based learning.
- Design engaging lessons that align with IB standards, including internal and external assessments, while integrating real-world applications of chemistry at both local and global levels.
- Organize and supervise laboratory experiments that allow students to develop essential investigative skills.
- Ensure safety protocols are followed in all practical activities.
- Encourage students to explore chemistry's role in solving global challenges.
- Provide personalized support to students, including those working on extended essays (EEs) in chemistry.
- Assist students in understanding complex topics and preparing for their IB assessments, focusing on scientific thinking, problem-solving, and critical analysis.
- Collaborate with colleagues across the IB curriculum to create interdisciplinary learning opportunities that enhance students' understanding of the connections between chemistry and other subjects like biology, physics, and environmental sciences.
- Stay current with developments in IB education and chemistry pedagogy.
- Bring real-life chemistry examples into the classroom, highlighting the chemical processes relevant to both Colombian and international contexts.
English Language Instructor
Sena
Cali, Colombia
08.2022 - 11.2023
- Provided support to students in understanding and improving sound and symbol relationships, spelling, punctuation, style and pronunciation with self-guided exercises.
- Established positive classroom management boundaries to create safe, known environment for behavior among students.
- Communicated with parents in person, by email and phone to apprise of student progress, challenges and behavior issues.
- Identified students struggling with material and made arrangements to meet one-on-one during study hall or other time periods to provide additional instruction in one-on-one environment.
- Developed teaching materials to supplement standard curriculum, enhancing learning concepts and promoting student engagement.
- Authored tests and quizzes to evaluate student learning and comprehension.
- Implemented innovative teaching approaches for special needs students to meet requirements of individualized education plans.
- Provided technical support to training department and school, quickly fixing hardware and software issues affecting computers and language lab systems.
- Improved student performance by defining clear goals and communicating performance metrics.
- Utilized data to inform instructional decisions and personalize learning.
International English Teacher
Skyeng
Cali, Valle del Cauca
04.2021 - 03.2022
- Prepared and implemented lesson plans covering required course topics.
- Tracked student progress using exams and weekly graded assignments, keeping detailed notes and working with students to identify and rectify issues.
- Explored and implemented innovative use of technology in language education.
- Utilized multimedia strategies and technology to convey information in fresh and interesting ways.
- Developed strong rapport with students by demonstrating genuine interest in their personal lives and academic success.
- Improved student comprehension by developing and implementing diverse teaching strategies tailored to individual needs.
- Served as a mentor for new teachers entering the profession, offering guidance on effective classroom management techniques and lesson planning strategies.
- Assessed work of adult students to evaluate progress and identify areas for improvement.
- Created advanced job placement training focusing on promotions, career changes and career advancement.
Freelance Teacher
Fiverr
Cali, Valle del Cauca
06.2020 - 11.2021
- Kept students on-task with proactive behavior modification and positive reinforcement strategies.
- Evaluated and revised lesson plans and course content to facilitate and moderate classroom discussions and student-centered learning.
- Supported student teachers by mentoring on classroom management, lesson planning and activity organization.
- Fostered team collaboration between students through group projects for Chemistry, Physics and English.
- Implemented and encouraged debate-style classroom environment to increase student engagement and promote critical thinking.
- Implemented creative ways to foster curiosity for complex principles through hands-on learning and planned activities.
- Enhanced student knowledge of technology by integrating various web-based applications for research and assignments.
- Integrated cultural awareness into lessons by incorporating diverse perspectives and materials into the curriculum.
- Improved students' analytical skills by introducing state-of-the-art computer program technologies.
Bilingual Customer Service Representative
Teleperformance
Cali, Valle del Cauca
09.2020 - 10.2020
- Identified and responded to customer requests and concerns through email, online chat and phone for both English and Spanish-speaking customers.
- Achieved and consistently exceeded revenue quota through product and service promotion during routine calls.
- Described and explained details about Doordash options to inform customers and guide purchasing decisions.
- Pursued opportunities to boost company profile with customers by providing exceptional support.
- Collaborated with team members to increase call volume efficiency and improve processing outcomes.
- Accurately detailed customer concerns and problems as well as resolution outcomes.
- Tapped cultural knowledge and relationship-building skills to assist customers with explaining issues.
- Adhered to efficiency metrics of service including Email Handle Time (EHT), Chat Handle Time (CHT), Phone Handle Time (PHT) and Quality and Voice of Customer (VOC).
- Entered customer interaction details in Salesforce to track requests, document problems and record solutions offered.
English as a Second Language Teacher
Centro Cultural Colombo Americano Cali
Cali, Valle del Cauca
07.2015 - 06.2020
- Increased ESL students' reading levels by integrating online word games and altering lesson plans for students needing extra guidance.
- Developed activities and integrated technology to diversify instruction.
- Gave one-on-one attention to each student while maintaining overall focus on entire group.
- Collaborated with teachers and department heads to meet quarterly and yearly educational goals.
- Created new lesson plans based on course objectives.
- Improved instruction methods by using various assessment tools and strategies.
- Administered and graded tests and assignments to evaluate student progress.
- Managed several internet-based language programs.
- Documented student attendance and progress against goals.
- Emphasized critical thinking through small group activities.
- Provided individual mentoring and special tutoring to struggling students.
Science Teacher
Vernot School
Cali, Valle del Cauca
05.2014 - 06.2015
- Communicated with students and parents regarding academic progress, assignments and behavior.
- Arranged materials and instructional plans to implement immersive activities delving into Chemistry, Biology and Ecology concepts.
- Assessed submitted class assignments, determined grades and reviewed work with struggling students to boost success chance.
- Leveraged diverse learning strategies to prepare students for higher-level education requirements.
- Coordinated and collaborated with other faculty members during lesson plan development.
- Demonstrated positive and effective classroom management skills.
- Understood critical development years for adolescent minds and structured lessons to meet cognitive abilities.
- Planned and escorted student field trips relevant to current science course work.
- Diversified teaching techniques and learning tools help students with differing ability levels and varied learning modalities.
- Encouraged student interest in Science, Technology, Engineering and Mathematics (STEM) and participation in middle and high school national science competitions.
- Offered clear and constructive student discipline, discouraging inappropriate behavior and bullying.
Academic Assistant
Fundeforg
Cali, Valle del Cauca
11.2013 - 03.2014
- Met firm deadlines while applying result-driven and goal-oriented methodology to teaching initiatives.
- Answered student inquiries and resolved problems related to curriculum and course prerequisites.
- Investigated complaints and worked with students, parents and teachers on finding positive resolutions.
- Mentored students, offering advice and support on topic selection, appropriateness and academic value.
- Maintained student database and electronic records for each student contact.
Biology Teacher
Catholic school
Cali, Valle del Cauca
11.2013 - 12.2013
- Organized laboratory activities for optimum learning, including preparing lectures, discussions and student experiments.
- Prepared individualized lesson plans and educational materials to structure biology curriculum to needs of each student.
- Assessed submitted class assignments, determined grades and reviewed work with struggling students to boost success chance.
- Sat in on classes of fellow teaching professionals to learn innovative methods for dispensing information to students.
- Assessed student comprehension through regular quizzes, tests and assignments.
- Diversified teaching techniques and learning tools help students with differing ability levels and varied learning modalities.
- Evaluated students' academic and social growth, kept appropriate records and prepared progress reports to gauge performance.
- Established positive and encouraging relationship with students and helped to foster appreciation for biology and science.
Teacher's Aide
CENCOES
Cali, Valle del Cauca
04.2013 - 09.2013
- Tutored struggling students individually and in small groups to reinforce learning concepts.
- Set up visual aids, equipment and classroom displays to support teacher's lesson delivery.
- Assisted teachers with classroom management and document coordination to maintain positive learning environment.
- Took daily attendance, notifying classroom teacher immediately of any student absences.
- Completed and filed daily paperwork for classroom activities, including meal count sheets and attendance logs.
- Supported classroom activities, including tutoring, grading homework and reviewing exams.
SAT Tutor
QIQ Academic Investigations
Cali, Valle del Cauca
10.2012 - 05.2013
- Planned lessons for allotted time to strengthen weak subjects and build skills.
- Collaborated with students to complete homework assignments, identify lagging skills and correct weaknesses.
- Worked with students in classrooms or home environments to provide educational support.
- Researched modern best practices in improved tutoring methods for high school students studying for standardized tests.
- Made lessons interesting and engaging using art and visual aids to bolster learning.
- Improved test scores by focusing on reading comprehension, math, and critical thinking skills through one-on-one tutoring sessions.
- Educated students on study tips and exam strategies.
- Created special handouts, study guides and enrichment materials to boost student knowledge.
Biochemistry Lab Assistant
Universidad del Valle
Cali, Valle del Cauca
09.2010 - 06.2011
- Supervised and mentored 500 freshmen Health students in conducting targeted experiments and gathering data and analyzing results to obtain valuable and actionable conclusions.
- Managed cohesive, searchable database with all obtained information, experimental characteristics and observations, as well as recommended actions and initiative plans.
- Maintained and repaired facilities, equipment and tools to achieve operational readiness, safety and cleanliness.
Education
Bachelor of Science - Chemistry
Universidad Del Valle
Cali, Valle Del Cauca, Colombia 08.2004 - 05.2012
Certification - The Teaching English As A Foreign Language
University Of Maryland Baltimore County
2015.02 - 2015.05
Skills
Teacher collaboration
Documentation and reporting
Sales expertise
Customer Relations
Empathetic and genuine
Good listening skills
CRM
Student engagement
Certification
Licensed Chemist
Affiliations
- American Chemical Society (ACS)
- ScIC11 – “Science Is Cool” Virtual Unconference (PocketLab)
- International Baccalaureate (IB) Education Community
Accomplishments
- Collaborated with team of Science Deparment in the development of the new syllabus for IB Chemistry.
- Resolved product issue through consumer testing of Kerboodle platform from Oxford University Press.
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Quote
Almost everything worthwhile carries with it some sort of risk, whether it’s starting a new business, whether it’s leaving home, whether it’s getting married, or whether it’s flying into space.
Chris Hadfield
Software
Google Workspace
Calendar Management Tools
Zoom / Video Conferencing Tools
Azure
Turnitin
LMS Platforms
Languages
Spanish
Bilingual or Proficient (C2)
English
Advanced (C1)
Interests
Cross-Cultural Communication
Science, Innovation & Global Challenges
Professional Development & Continuous Learning
Technology & Digital Tools
Organizational Efficiency & Process Improvement
Timeline
Verified International Academic Qualifications by WES
07-2025
IELTS Academic Proeficiency test
04-2025
IB Chemistry Teacher
Colegio Berchmans
08.2024 - Current
English Language Instructor
Sena
08.2022 - 11.2023
International English Teacher
Skyeng
04.2021 - 03.2022
Bilingual Customer Service Representative
Teleperformance
09.2020 - 10.2020
Freelance Teacher
Fiverr
06.2020 - 11.2021
English as a Second Language Teacher
Centro Cultural Colombo Americano Cali
07.2015 - 06.2020
TEFL Certification, Centro Cultural Colombo Americano
06-2015
Certification - The Teaching English As A Foreign Language
University Of Maryland Baltimore County
2015.02 - 2015.05
Science Teacher
Vernot School
05.2014 - 06.2015
Academic Assistant
Fundeforg
11.2013 - 03.2014
Biology Teacher
Catholic school
11.2013 - 12.2013
Teacher's Aide
CENCOES
04.2013 - 09.2013
SAT Tutor
QIQ Academic Investigations
10.2012 - 05.2013
Biochemistry Lab Assistant
Universidad del Valle
09.2010 - 06.2011
Bachelor of Science - Chemistry
Universidad Del Valle
08.2004 - 05.2012