Senior Accountant

As Senior Accountant , you will be accountable for the ongoing delivery and execution of four core process areas, transitioned from Marqeta’s subsidiary, TransactPay. These areas comprise banking journal entries, account reconciliations, SOX control execution , and customer invoicing/billing. You’ll have a dual mandate

In Phase 1 you will provide maternity cover for a member of the TransactPay team where you will be trained to carry out some of the existing manual core processes, in parallel with the automation transition plan. During this phase, as well as executing the assigned processes, you will take your learnings and understanding of the manual processes to assist the Finance Manager as they deliver the transition stage through building scalable and structured automated solutions that allow the processes to be absorbed and stabilized.

In Phase 2 you’ll run the steady state for the newly automated processes. You will be accountable for the accurate, timely, and controlled execution of each newly automated process area within agreed service levels. You will operate a reliable, audit-ready control environment with a bias toward standardization and continuous improvement.

As an integral part of the TransactPay Finance team, you’ll work very closely with colleagues in Gibraltar and Malta to maintain accurate financial records in our regulated businesses, in accordance with IFRS and other local accounting standards, and also with the Marqeta US Controller to ensure alignment with the group consolidation and close cycle, and adherence to the ICFR/SOX framework.

This role can be performed in a hybrid work model (Tuesday, Wednesday, Thursday onsite) from our Warsaw office. We’d love for you to join us!

The Impact You’ll Have

Phase 1: Transition

Complete the effective handover and assume responsibility for the timely execution of the following month-end close processes in their current manual format:

Accountable for the accurate posting of several banks’ Financial Operations movements into the NetSuite general ledger.

Assist in the monthly revenue invoice cycle, including the roll forward of the invoice template, updating the project log and preparing the ‘non-scheme’ invoices.

Compiling monthly FX using Netsuite rates.

Assume responsibility for various balance sheet reconciliations, ensuring that they are prepared, reviewed and then certified by the appropriate TransactPay individual on schedule. Assigned categories to include:

Several bank accounts including multiple currencies

Program Manager Prefund reconciliations

Program Manager Prefund Revenue reconciliations

Program Manager Prefund Interchange reconciliations

Network Liabilities reconciliations

Transition and stabilization

Assist the Finance Manager with the knowledge transfer and migration of the above four core processes from TransactPay.

Identify standardization and automation opportunities and assist the Finance Manager in making continuous improvement once processes stabilize.

Phase 2: Automated process execution

Banking journal entries

Accountable for the accurate daily posting of bank and cash activity relating to Financial Operations movements into the NetSuite general ledger, via the newly automated process.

Maintain the integrity of multi-currency bank ledger and support month-end FX translation and revaluation entries.

Investigate and resolve unposted, unidentified, or timing-related cash items.

Account reconciliations

Carry out the balance sheet reconciliation process for the transitioned entities in respect of agreed categories of accounts including bank, prefund liabilities, settlement liabilities and other GL accounts (subject to expansion of scope).

Ensure the reconciliations in scope are prepared and reviewed, then certified by the appropriate TransactPay individual on schedule (e.g. in the reconciliation tool) with reconciling items appropriately aged, substantiated, and cleared.

Highlight any aged or high-risk reconciling items to the Finance Manager and support with driving them to resolution with the relevant process and entity owners.

Maintain reconciliation standards, thresholds, and review evidence to withstand internal and external audit.

Customer invoicing/billing

Execute the customer invoicing and billing for TransactPay, delivering accurate and timely billing runs utilizing newly automated processes, including invoice issuance and supporting documentation.

Reconcile billed amounts to underlying data and agreements, and coordinate with commercial/operations teams on billing inputs, adjustments and credits.

Own resolution of billing queries and disputes, and support accounts-receivable follow-up and revenue-related close activities.

Ensure billing outputs comply with local tax/VAT and invoicing requirements for the relevant European jurisdictions.

SOX control execution

Execute assigned ICFR/SOX controls over the transitioned processes, retaining complete and timely evidence for each control operation.

Ensure controls are performed as designed and that any exceptions or breakdowns are logged, escalated and remediated.

Partner with Internal Audit, external auditors, and the SOX/controls team on walkthroughs, testing and requests, and act as control owner/performer of record where assigned.

Support control design updates as processes are standardized post-transition, keeping narratives and control matrices current.

Who You Are

Bachelor’s degree in accounting, finance, or a related field

Professional qualification: ACCA, ACA, CIMA or EU equivalent (or in progress).

2+ years of accounting experience

Advanced, hands-on knowledge of IFRS standards

Controls and accuracy mindset, treats evidence, review, and segregation of duties

Hands-on experience with complex reconciliations, high-volume journal entries, and month-end close

Advanced Excel; comfortable working with high transaction volumes and multiple currencies

Clear, proactive communicator

Nice-To-Haves

Experience in payments, fintech, or other regulated financial services business with knowledge of flow of funds movements and interchange/billing

Familiarity with both IFRS/local GAAP and U.S. GAAP, and with reporting into a U.S.-listed parent

Working knowledge of a SOX / internal-controls (ICFR) environment

ERP experience (NetSuite) and reconciliation tooling (e.g. Floqast)

Strong aptitude for technology solutions and AI tools

Knowledge of European VAT/invoicing requirements

Typical Process

Application Submission

Recruiter phone call

Hiring manager video call

Virtual “Onsite” consisting of 3, 45 min calls

Offer!

Compensation and Benefits

When determining salaries, we consider several factors including, but not limited to, skills, prior experience, and work location. The new-hire base salary range for this full-time position, reflected in PLN, is: 97,700-122,100

The bonus target for this position is 10% of the applicable base salary, subject to the plan terms and meeting eligibility requirements.

Along with monetary compensation, Marqeta currently offers:

Monthly stipend for your home office equipment and connectivity

Annual development stipend to support your growth and development

Pension Scheme provided by Allianz

Employee health insurance through LUX MED with employee cover paid at 100% by Marqeta

Four floating holidays as additional paid days off to annual leave entitlement

In-office amenities including: drinks and snacks, wellness room, dedicated barista, community events onsite

MultiSport Plus membership offerings

About Marqeta

Marqeta is on a mission to change the way money moves. We’re one of the earliest enablers of embedded finance, a market opportunity sized up in the trillions. Our card issuing platform provides unprecedented flexibility and control for companies to issue cards, authorize transactions, and manage payment operations in