Senior Backend Engineer — FinTech/Payments (Hybrid)

Peoplemore; Kraków; Hybrid; PLN 152,000 - 234,000; Full time

Benefits offered by this job

Private medical care

Sports card

Training courses

Hybrid working model

Job summary

People More is seeking a Senior Backend Engineer to design, implement and maintain distributed services for FinTech and payments. You’ll build scalable APIs, work on event-driven architectures, and own backend solutions end-to-end in a hybrid Poland-based team.

You'll collaborate with product and engineering, mentor juniors, and ensure performance, security and reliability across systems. A B2B contract with hybrid office options in Kraków or Warsaw is offered.

Qualifications

• 5+ years of commercial experience in backend development.
• Practical experience in designing, developing, and maintaining distributed systems and event-driven architectures.
• Strong understanding of distributed systems concepts, including consistency models, Saga patterns, idempotency, and the Outbox pattern.
• Experience with production-grade backend services and APIs.
• Hands-on experience with CI/CD pipelines, production monitoring, and observability solutions.
• Good knowledge of relational databases, preferably PostgreSQL.
• Experience with automated testing, including unit, integration, and contract testing.
• Practical use of AI-assisted development tools in daily engineering work.
• Ability to write clean, maintainable, and well-tested code.
• Very good English and Polish

Responsibilities

• Designing, developing, and maintaining distributed backend services.
• Building scalable, secure APIs with focus on performance and resilience.
• Developing event-driven architectures and integrations between services.
• Owning backend solutions through full SDLC from design to production support.
• Designing and maintaining domain events and data exchange.
• Collaborating with engineering and product teams on technical requirements.
• Monitoring production environments, investigating incidents, and enabling improvements.
• Reviewing code, mentoring developers, and contributing to engineering standards.

Skills

Backend development

Distributed systems

English & Polish

Performance & reliability

Tools

CI/CD pipelines

Observability

Job description

People More is seeking a Senior Backend Engineer to design, implement and maintain distributed services for FinTech and payments. You’ll build scalable APIs, work on event-driven architectures, and own backend solutions end-to-end in a hybrid Poland-based team.

You'll collaborate with product and engineering, mentor juniors, and ensure performance, security and reliability across systems. A B2B contract with hybrid office options in Kraków or Warsaw is offered.