payabl

Senior Backend Software Engineer

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SeniorZdalnie·WarszawaFull-time·B2B

#456094·Dodano 11 dni temu·0

Źródło: justjoin.it

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Tech Stack / Keywords

PythonDistributed systemsMicroservices Docker AWSAPI Testingasyncio

Podsumowanie oferty

You will work on high-performance payment gateway projects, supporting and extending legacy systems while designing and building scalable Python microservices. The role emphasizes system performance, scalability, and reliability in critical transaction flows and involves technical leadership and collaboration with DevOps. You will troubleshoot production issues and bring a product-focused delivery mindset.

Wymagania

5+ years of backend engineering experience with deep Python expertise (FastAPI and AsyncIO preferred)
Experience with Perl production code and willingness to work within legacy code
Proven experience building and scaling distributed microservices architectures and high-throughput systems
Deep understanding of integrating third-party APIs including webhooks, callbacks, idempotency, and retry policies
Strong experience with Docker and containerization
Solid grasp of AWS cloud infrastructure including Lambda, SQS, SNS, and cloud networking
Familiarity with event-driven architecture and messaging systems such as Kafka and RabbitMQ
Strong engineering mindset valuing clean, intentional code over AI-generated snippets
Experience owning features from design to production and mentoring engineers
Strong written and verbal English communication skills

Obowiązki

Support and extend the existing Perl-based payment gateway
Design and build high-performance microservices in Python
Architect and implement scalable, distributed Python services to replace legacy components
Integrate and manage complex third-party APIs and external payment services
Lead code reviews and drive engineering best practices
Identify system bottlenecks to improve performance and scalability
Collaborate with DevOps to improve CI/CD pipelines using GitLab
Architect solutions using AWS services (Lambda, ECS, SQS/SNS)
Troubleshoot and resolve complex production issues in distributed systems
Maintain a "zero-downtime" mentality for merchants
Bring a product mindset to understand business logic and user impact

Benefity

Annual Learning Budget for professional development (eligible after probation)
Company celebrations uniting colleagues from all offices
Opportunities to participate in international company events and initiatives

Dofinansowanie szkoleń

Spotkania integracyjne

Inne informacje

The data controller is payabl. Data is processed according to GDPR and Labour Code requirements for recruitment purposes. Personal data provision is partly mandatory and partly voluntary. Data retention lasts until recruitment is complete or consent is withdrawn (max 24 months). Candidates have rights to data access, rectification, erasure, and complaint. Consent may be withdrawn anytime without affecting prior processing.

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