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Senior Backend Developer – File Processing
Location
Poland
Posted
3 days ago
Salary
0
Seniority
Senior
Job Description
Senior Backend Developer – File Processing
payabl.
• Migrate and re-architect legacy Perl batch jobs and crontab pipelines into modern Python-based services. • Design and implement orchestration using Prefect or Airflow, including alerting, observability dashboards, and safe job re-run capabilities. • Instrument services with structured logging and metrics (CloudWatch, or Grafana) to eliminate the need for direct production server access. • Manage the data layer for file ingestion: landing raw scheme files to S3, parsing/transforming them, and persisting to PostgreSQL or RDS for reconciliation. • Process and reconcile payment scheme files (clearing, settlement, chargebacks) from card schemes and acquirers. • Contribute to architecture decisions, write technical documentation, and establish best practices across the team.
Job Requirements
- 5+ years of production-grade Python expertise.
- Proven experience in job orchestration using Prefect or Airflow.
- Solid experience with AWS services, specifically S3, Lambda, SQS, and ECS.
- Strong experience with relational databases (MySQL/PostgreSQL) and processing large-scale file-based data.
- We value deep engineering logic over AI-generated snippets. You should be a "clean code" advocate who can explain the reasoning behind every line you ship.
- You care about the "why" behind a feature. You are interested in how a product works for the end-user and the business.
- Strong English communication skills—both written and verbal.
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