ESG Practice Manager

ESG Practice Manager

Bilingual Thai / English · Bangkok · Full-time

About Othello International

Othello International is a Bangkok-based ESG technical consulting and bilingual disclosure firm. We advise SET-listed companies, financial institutions and international organisations on greenhouse gas accounting and carbon footprinting, climate and sustainability disclosure (IFRS S1/S2, GRI, FTSE Russell), assurance readiness, and ISO 17100-certified technical translation and interpretation.

The role

We are seeking an experienced ESG Practice Manager to lead the firm's administrative, billing and finance-operations function. Reporting directly to the Chief Executive Officer, you will take full ownership of invoicing and collections, expense and payroll administration, statutory filings, meeting and training logistics, consultant travel and day-to-day office operations, and will serve as the principal coordination point between our clients and our consulting team.

This is a senior, hands-on position for a professional who has performed this function independently in a professional-services environment.

Key responsibilities

Billing and accounts receivable

• Prepare and issue quotations, billing notes, invoices, tax invoices and receipts in FlowAccount with complete accuracy

• Monitor each engagement from signed proposal through to final payment, and manage collections on overdue accounts

• Obtain and maintain a complete register of withholding tax certificates (50 Tawi) received from clients

• Complete client vendor-registration, purchase-order and e-tax invoice requirements

Expenses and accounts payable

• Record expenses and supplier invoices in FlowAccount, applying the correct withholding tax (PND 3 / PND 53) and issuing 50 Tawi certificates

• Prepare payment schedules for CEO approval; administer petty cash and staff expense claims

• Maintain orderly, audit-ready records in coordination with the firm's external accountants

Payroll and statutory compliance

• Prepare monthly payroll, payslips and PND 1; file Social Security contributions (SSO 1-10); register new employees and report leavers

• Coordinate PP 30 VAT returns, PND 1 Kor, the Workmen's Compensation Fund and year-end 50 Tawi with the external accountants

• Own the firm's compliance calendar and ensure every filing is made accurately and on time

Meetings, training programmes and consultant support

• Prepare and coordinate client and internal meetings, both on-site and off-site — scheduling, venues and meeting rooms, agendas, materials, equipment, catering and follow-up actions

• Organise the firm's consultant-led training classes and workshops from start to finish — venue and room set-up, participant registration and communications, training materials, refreshments, attendance records and certificates

• Provide day-to-day administrative support to the consulting team so that engagements run smoothly and on schedule

Travel and consultant logistics

• Plan and book travel and local transport for consultants attending client sites, site visits, audits and training sessions — flights, hotels, vehicles, drivers and itineraries

• Maintain a shared schedule of consultant movements and ensure each consultant arrives prepared, on time and with the correct documents and equipment

• Manage travel budgets, advances and post-trip expense reconciliation

Office operations

• Manage suppliers, equipment, subscriptions, courier and printing services, and office facilities

• Maintain personnel files, leave records, and onboarding and offboarding procedures

• Provide executive support to the CEO, including scheduling, documentation and follow-up

Client and team coordination

• Act as a professional point of contact for clients on scheduling, documentation, contracts and billing, in both Thai and English

• Coordinate timelines, meetings and deliverable hand-offs between clients and the consulting team

• Identify issues early and escalate them clearly and promptly

Qualifications

• Bachelor's degree in Accounting, Business Administration or a related discipline

• A minimum of four years' experience in office management or combined administration-and-accounting roles, preferably within a consulting, professional-services, accounting or law firm

• Native-level Thai and excellent professional English, written and spoken — TOEIC 700 or above (or equivalent); proficiency will be assessed at interview

• Demonstrated hands-on proficiency in FlowAccount (PEAK or Express also considered), across the full document cycle from quotation to tax invoice and receipt

• Sound working knowledge of Thai VAT and withholding tax, PND 1 / 3 / 53, PP 30, Social Security filings and Revenue Department e-filing

• Advanced command of Microsoft Excel and Microsoft 365 (Outlook, Teams, SharePoint)

• Exemplary attention to detail, discretion and integrity in handling financial and confidential client information

• The ability to work independently, prioritise effectively and communicate with senior client stakeholders