Oksana Martyniuk
Oksana Martyniuk

Finance Professional

Open to offers · Member since 8 Nov 2026
Location
London, United Kingdom
Desired salary
Unspecified
Work preference
Remote Only / Full Time
Experience level
Senior

About

Professional summary

I am a finance professional with over 25 years of experience in accounts payable, accounts receivable, bank reconciliations, payment processing, budgeting, and month-end close activities.

I have worked in both large utility and UK accountancy environments, managing high volumes of financial transactions while maintaining accuracy, strong controls, and reporting deadlines.

I am proficient in Sage 50, Sage Business Cloud Accounting, Xero, QuickBooks, SAP R/3, BrightPay, Excel, and Google Sheets. I use these systems to process invoices, reconcile accounts, monitor cash flow, prepare reports, and resolve discrepancies.

My experience includes supporting VAT returns, payroll processes, management accounts, variance analysis, forecasting, audit preparation, and financial documentation. I am particularly confident in account reconciliations, payment scheduling, and financial controls.

I am AAT Level 3 qualified and studying toward the ACCA Applied Skills qualification. I bring a detail-oriented, analytical, and collaborative approach to finance roles and am open to new opportunities where I can contribute to an effective finance team.

Skills

21 capabilities

Experience

Career history

Assistant Management Accountant Poltavaoblenergo

I collect, verify, and process primary accounting documents, including payment requests, purchase orders, and supplier invoices. I record daily bank postings and business transactions in SAP R/3 and Excel, including corporate credit card reconciliations.

I monitor cash balances, AP/AR movements, budgets, and cost tracking for regional branches. I prepare payment schedules, support month-end close and management accounts, perform variance analysis and prepaid-expense calculations, and contribute to budgeting and reporting.

I liaise with internal teams, banks, and insurance providers to resolve payment delays, contract discrepancies, account terms, insurance renewals, and outstanding balances.

Accounts Assistant KBM Chartered Certified Accountants

I created and maintained supplier and customer records in Xero, QuickBooks, and Sage 50. I processed daily accounts payable and accounts receivable transactions, including invoices, payments, receipts, and customer invoicing.

I produced supplier and customer account-status reports, completed bank and petty-cash reconciliations, and investigated payment discrepancies. I also supported the preparation and submission of VAT returns to HMRC.

Volunteer – Accounting Department Independent Living Agency

I processed payroll, invoices, and bank reconciliations using QuickBooks and Xero for a charitable organisation.

I supported HMRC reporting and employee payslip preparation using BrightPay. I also assisted with financial recordkeeping and general finance administration.

Exam Invigilator Graveney School & Sir George Monoux College

I set up examination rooms, seat candidates, provide regulatory briefings, and manage live candidate queries in accordance with JCQ regulations.

I record access arrangements and candidate times, and securely deliver completed examination scripts to the examinations office. The role requires careful handling of confidential materials and strict compliance with awarding-body procedures.

Assistant Management Accountant Poltavaoblenergo

I held the Assistant Management Accountant role within a large electricity distribution utility serving more than 698,000 consumers. I supported payment processing, cash management, budgeting, financial reporting, bank postings, reconciliations, and month-end activities.

I contributed to improved payment controls and audit readiness by designing a SAP-integrated payment-control reporting tool. I also helped improve banking terms, payment-approval procedures, and budgeting processes across multiple regional branches.

Finance Assistant Poltavaoblenergo

I performed three-way matching and processed payment requests, ensuring supporting documentation and supplier information were complete and accurate.

I supported accounts payable processes, bank reconciliations, budgeting activities, and financial reporting.

Education

Learning history

Poltava State Agricultural Institute

Bachelor's Degree (Honours), Accounting and Finance

Bachelor's degree in Accounting and Finance. UK ENIC Statement of Comparability confirms comparability to a UK Bachelor (Honours) degree at RQF Level 6.

ACCA

ACCA Qualification – Applied Skills Level, Accounting

In progress.

NCFE

Level 3 Diploma, Management Skills and Knowledge

AAT

Level 3 Certificate, Bookkeeping

AAT

Level 2 Certificate, Accounting and Bookkeeping

Practical Accountancy Training

Professional Training, Sage, QuickBooks and Xero

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