Staff Software Engineer: Architecting Scalable Payments

Paymentology; Warszawa; On-site; PLN 250,000 - 380,000; Full time

Job summary

Paymentology is hiring a Staff Software Engineer to provide technical leadership across multiple teams and engineering domains. You will shape technical strategy, guide architectural decisions, and help teams build reliable, scalable systems powering millions of payment transactions daily.

As an individual contributor with organisation-wide influence, you’ll mentor senior engineers, establish engineering standards, and enable teams to make confident technical decisions while solving complex

Qualifications

• 10+ years of experience designing and delivering complex distributed systems.
• Experience shaping technical strategy and mentoring engineers.
• Proven success leading technical initiatives across multiple teams.

Responsibilities

• Drive technical strategy across engineering domains and cross-team initiatives.
• Shape scalable architectures that support long-term product and business goals.
• Translate complex technical challenges into clear, practical solutions.
• Establish engineering standards, architectural patterns, and best practices across teams.
• Identify and mitigate long-term risks around reliability, scalability, security, and maintainability.
• Partner with Engineering, Product, and Operations to influence technical roadmaps and delivery.
• Mentor senior engineers and strengthen technical leadership across the organisation.
• Lead initiatives that improve engineering quality, testing, observability, and operational excellence.
• Contribute hands-on to critical systems where your expertise delivers the greatest impact.

Skills

Distributed backend systems

Java

Microservices

APIs

Event-driven architectures

Cloud platforms (AWS)

CI/CD

Infrastructure as Code

Containerisation

Observability

Automated testing

Mentoring

English proficiency

Education

Bachelor's degree in Computer Science or related

Tools

AWS

Docker

Kubernetes

Terraform

Job description

Paymentology is hiring a Staff Software Engineer to provide technical leadership across multiple teams and engineering domains. You will shape technical strategy, guide architectural decisions, and help teams build reliable, scalable systems powering millions of payment transactions daily.

As an individual contributor with organisation-wide influence, you’ll mentor senior engineers, establish engineering standards, and enable teams to make confident technical decisions while solving complex