Junior Accountant

Colibrix One; Warszawa; On-site; PLN 65,000 - 90,000; Full time

Benefits offered by this job

English classes

Spanish classes

Training reimbursement

Job summary

COLIBRIX ONE, a fintech company in Poland, is seeking a detail-oriented Accounting Specialist to join the Finance team in Warszawa. You will manage bank reconciliations, process supplier invoices, and support month-end closing activities to ensure accurate financial records.

Qualifications include a degree in accounting or finance, 1.5+ years of relevant experience, and fluency in English and Russian. Experience with ERP systems and VAT compliance is highly valued; we offer growth, training, and

Qualifications

• Degree in accounting, finance or economics (completed or in progress).
• 1.5+ years in bank reconciliation, AP or general accounting.
• Solid understanding of double-entry bookkeeping, VAT and invoice compliance.

Responsibilities

• Bank reconciliation and investigation of discrepancies.
• Accounts payable processing and invoice verification.
• Support month-end close with accruals and schedules.

Skills

Bank reconciliation

Accounts payable

ERP systems

Double-entry bookkeeping

VAT compliance

Attention to detail

Analytical thinking

Deadline oriented

English (fluent)

Russian (fluent)

Education

Accounting/Finance degree

Tools

ERP software

Job description

Join COLIBRIX ONE - Innovating the Future of Payments

At COLIBRIX ONE*, we’re building advanced, AI-powered payment technologies that support Payment Service Providers (PSPs), Electronic Money Institutions (EMIs), and neobanks across the EU and the UK. As a fully licensed Electronic Money Institution (FCA Reference No. 927920) and holder of a Financial Institution Licence issued by the MFSA, as well as a principal member of both VISA and Mastercard, we provide comprehensive, real-world financial solutions that include:

• Global card processing
• Digital wallet infrastructure
• Cross-border merchant accounts
• Alternative payment methods (APMs)
• Corporate accounts for legal entities

We’re a fast-growing team with a passion for innovation, security, and scalability. Our culture values curiosity, collaboration, and impact - and we’re looking for talented professionals who are ready to shape the future of fintech.

At COLIBRIX ONE, your work directly powers the digital economy. If you’re eager to solve meaningful challenges and build with purpose, we’d love to hear from you.

About the Role

We are looking for a detail-oriented Accounting Specialist to join our Finance team. In this role, you will be responsible for bank reconciliations, processing supplier invoices, resolving discrepancies, and supporting month-end closing activities. You’ll help ensure accurate financial records and smooth day-to-day accounting operations.

Key Responsibilities

Bank reconciliation

• Import bank statements and reconcile all company bank accounts to the general ledger on a daily or weekly basis.
• Investigate and resolve unmatched transactions, suspense items and discrepancies, posting corrections with proper support.
• Monitor ageing of open items and elevate anything unresolved after 10 days.

Accounts payable and invoice processing

• Receive supplier invoices from all channels and register them accurately in the ERP.
• Check each invoice for correct legal entity, VAT details, amounts, bank details and potential duplicates.
• Route invoices to budget holders for approval and follow up on delayed approvals.
• Reconcile supplier statements and resolve differences.
• Respond promptly and professionally to supplier queries on invoices and payments.

Month-end procedure

• Support the month-end close with AP accruals, reconciliations and schedules.
• Provide documentation for internal and external audits.

Requirements

• Degree in accounting, finance or economics (completed or currently in progress), or an equivalent professional qualification.
• At least 1.5 years of experience in bank reconciliation, accounts payable or general accounting.
• Solid understanding of double-entry bookkeeping, VAT and invoice compliance rules.
• Hands-on experience with an ERP or accounting system.
• Exceptional attention to detail and a persistent, analytical approach to resolving discrepancies.
• Ability to manage a high volume of transactions and meet deadlines.
• Fluent in English and Russian (proficiency in additional languages is considered an asset).

What We Offer

• Opportunity to shape the future of fintech solutions within a growing company.
• A collaborative and supportive team environment.
• English / Spanish classes.
• Opportunity to receive reimbursement for work-related training/courses.

* This position is offered within the COLIBRIXONE. Employment will be under the appropriate legal entity based on the role and location.