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Callista Patricia Sumarauw

@callistapatriciasuma

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HR Admin Intern at Omni App Solutions who supported payroll, recruitment, and employee onboarding.

Indonesia

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What I'm looking for

I’m looking to contribute my organizational and administrative skills in a professional environment where I can continue learning and growing.

At Omni App Solutions Pte Ltd, I supported HR administration for the core company and a client organization, maintaining employee records and personnel documentation.

I supported monthly payroll by checking attendance records, preparing payroll data, calculating salaries, and coordinating with Finance. I also coordinated onboarding and offboarding, including contracts, account setup, and orientation materials.

I supported recruitment by scheduling interviews, conducting candidate interviews and English proficiency assessments, and preparing employment contracts. I also developed and maintained HR SOPs, user guides, and training materials.

At Teach for Indonesia Student Community, I tracked finances and managed payment and reimbursement documentation as Treasurer. As a Counselor (Teaching Volunteer) with Wahana Visi Indonesia, I facilitated educational activities and developed learning materials for children and adolescents.

Experience

Work history, roles, and key accomplishments

Counselor (Teaching Volunteer)

Wahana Visi Indonesia

Sep 2025 - Jan 2026 (4 months)

Facilitated educational activities for children and adolescents, developed learning materials and interactive activities, and assisted in group discussions and activity planning.

Teaching Facilitation material development Communication Skills Teamwork

HR Admin Intern

Omni App Solutions Pte Ltd

Feb 2025 - Aug 2025 (6 months)

Managed HR administrative operations including employee database maintenance, leave management, and personnel documentation. Supported payroll processing, recruitment activities, and developed HR SOPs and training materials.

HR Administration Payroll Recruitment Onboarding Offboarding SOP Development Microsoft Office Google Workspace

Treasurer

Teach for Indonesia Student Community

Jun 2024 - Nov 2024 (5 months)

Managed financial records, tracked income and expenses, and processed payments and reimbursements. Developed spreadsheets to organize equipment requests and resource allocation.

Financial Management Budgeting Spreadsheets Documentation

Education

Degrees, certifications, and relevant coursework

BINUS University

Bachelor of Psychology, Psychology

2022 -

Grade: 3.90 / 4.00

Activities and societies: Dean's List (2023, 2024, 2025); Relevant coursework in Industrial and Organizational Psychology, Psychology of Learning, Training & Development, Talent Management, Assessment Center Method, Leadership and Organizational Behaviour, Human Performance Technology.

Pursuing a Bachelor of Psychology with a specialization in Industrial-Organizational Psychology. Achieved Dean's List in 2023, 2024, and 2025.