Senior Software Engineer

🕒 August 19

🇵🇱 Poland – Remote

⏳ Contract/Temporary

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 27%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Paymentology

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2015

💳 Fintech

☁️ SaaS

🏦 Banking

💰 Seed on 2016-02

Fintech • SaaS • Banking

Paymentology is a payments technology company that provides an issuing and processing platform (Lume) enabling banks, fintechs, digital banks, telcos, remittance providers, governments and other organisations to launch, manage and scale card programmes. The platform supports issuing debit, prepaid, credit, hybrid, virtual, numberless cards, multi-currency and crypto/stablecoin-linked cards, tokenization, BIN sponsoring, card processing, fraud control and 3DS. Paymentology positions itself as a partner for fintechs, neobanks, banks, telcos, remitters, lenders, travel and crypto players, emphasizing real-time data, global multi-currency capabilities, and programme management, plus client portal and data intelligence.

📋 Description

• Design, build, and scale Java backend services powering global payments infrastructure • Lead design and development of backend services, distributed systems, and APIs • Own features end-to-end, including architecture, coding, testing, observability, and deployment • Write clean, maintainable, well-tested code using engineering best practices and test-driven development • Break complex technical work into manageable chunks • Work in a collaborative, cross-functional, agile team environment • Mentor associate and mid-level engineers • Identify, document, and deliver performance, reliability, and scalability improvements • Participate in incident response and support rotations • Participate in an on-call rotation one week out of every five weeks • Contribute to technical strategy and raise engineering standards across the organisation

🎯 Requirements

• Significant commercial experience with modern Java 15; currently moving to Java 21 • 5+ years of experience across multiple projects as a guide • Proven experience designing, building, and maintaining distributed systems and microservices • Deep understanding of object-oriented programming • Familiarity with event-driven architectures or Domain Driven Design • Strong system design experience, including scalable, resilient, and high-performance distributed applications • Ability to make architectural decisions and evaluate technical trade-offs • Experience with test-driven development • Strong grasp of relational databases, including PostgreSQL and MySQL, and data modeling • Understanding of cloud infrastructure, preferably AWS, containerisation, CI/CD, and Infrastructure-as-Code • Experience in fintech, payments, or other high-throughput/regulated domains • Ability to work as an independent contractor and issue invoices • Ability to pass credit, education verification, sanction and enforcement screening, employment verification, criminal, and ID checks • Legal authorisation to work in the current country of residence without visa sponsorship or additional work authorisation

🏖️ Benefits

• 100% remote, globally distributed team • High-impact role supporting real-time global payments • Growth path toward Senior Engineer 2, Staff Engineer, or Engineering Manager • Diverse, mission-driven engineering culture