Senior Backend Engineer

~110 - 150 PLN/ godz./ godz.B2BB2B (netto)

SeniorHybryda·WarszawaInne·B2B

#476510·Dodano wczoraj·0

Źródło: justjoin.it

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Tech Stack / Keywords

SagaCI/CDAPIPostgreSQLOutboxAIC#.Net

Podsumowanie oferty

Design and maintain distributed backend services for payment authorisation, financial ledgers, settlements, and related payment processes. Build APIs and event-driven integrations, and contribute across the software development lifecycle in collaboration with engineering and product teams.

Wymagania

At least 5 years of commercial backend development experience using one or more of Java, C#/.NET, Rust, or Node.js.
Practical experience 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 developing and maintaining 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 unit, integration, and contract testing.
Practical daily use of AI-assisted development tools such as GitHub Copilot, ChatGPT, Claude, or similar solutions.
Ability to write clean, maintainable, and well-tested code.
Very good English and Polish.

Obowiązki

Design, develop, and maintain distributed backend services supporting payment authorisation, financial ledgers, settlements, and other payment-related processes.
Build scalable, secure, and reliable APIs focused on performance, maintainability, and system resilience.
Develop event-driven architectures and implement integrations between distributed services.
Take responsibility for backend solutions throughout the software development lifecycle, from requirements analysis and technical design to implementation, testing, deployment, and production support.
Design and maintain domain events and ensure reliable data exchange between systems.
Work with engineering and product teams to define technical requirements, evaluate solutions, and support architectural decisions.
Monitor production environments, investigate incidents, perform root cause analysis, and implement improvements.
Review code, mentor other developers, and contribute to engineering standards and best practices.

Benefity

Private medical care.
Sports card.
Training courses.
Opportunity to attend conferences, including as a speaker, and support with publishing in recognized magazines and online.

Opieka zdrowotna

Karta sportowa

Inne informacje

Recruitment process: a remote initial interview, a remote technical talk, and a decision to work together.

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