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Senior Backend Developer (File Processing)

3 weeks, 6 days ago
Portugal, Ukraine
Full-time
Senior
Backend Engineer
Software Development
Apache Airflow AWS Grafana Microservices MySQL Perl PostgreSQL Prefect Python
Apply Now
payabl.

payabl.

payabl. empowers merchants to handle payments on a global scale by offering a comprehensive solution that includes card acquiring, alternative payment methods, payment accounts, and prepaid cards.

Diversified Financial Services
51-250
Founded 2011
View All Jobs 7

Description

  • Migrate legacy Perl batch jobs and crontab pipelines into modern Python-based services.
  • Design and implement workflow orchestration using Prefect or Airflow.
  • Build alerting, observability dashboards, and safe job re-run capabilities.
  • Instrument services with structured logging and metrics to reduce direct production server access.
  • Own the data layer for ingesting raw scheme files into S3, transforming them, and persisting reconciled data in PostgreSQL or RDS.
  • Process and reconcile payment scheme files such as clearing, settlement, and chargeback files from card schemes and acquirers.
  • Contribute to architecture decisions and help define engineering standards for the team.
  • Write technical documentation and establish best practices across the squad.
  • Collaborate with technical leadership and engineering peers on problem solving and implementation.

Requirements

  • 5+ years of production-grade Python experience.
  • Proven experience with job orchestration tools such as Prefect or Airflow.
  • Solid AWS experience, especially with S3, Lambda, SQS, and ECS.
  • Strong experience with relational databases such as MySQL or PostgreSQL.
  • Experience processing large-scale file-based data.
  • Ability to write clean, well-reasoned code and explain implementation decisions.
  • Strong English communication skills, both written and verbal.
  • Curiosity about product and how features impact end users and the business.
  • Familiarity with payment scheme file formats such as Visa BASE II, Mastercard IPM, or equivalent is preferred.
  • Experience reading and refactoring Perl or other legacy scripting languages is preferred.
  • Knowledge of payment clearing, interchange, and reconciliation processes is preferred.
  • Remote contractor based in Portugal or Ukraine.

Benefits

  • Fully remote role for candidates based in Portugal or Ukraine.
  • Annual learning budget for professional development after probation.
  • Opportunities to participate in international company events and initiatives.
  • Company-wide celebrations that bring colleagues from all offices together.

Interested in this position?

Apply directly on the company website

Apply Now

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