Senior Backend Developer – File Processing

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payabl.

WebsiteLinkedInAll Job Openings

51 - 200 employees

💳 Fintech

🤝 B2B

💸 Finance

Fintech • B2B • Finance

payabl. is a fintech company that offers game-changing financial solutions designed to help businesses expand globally. Specializing in a wide range of payment products, payabl. provides services such as card acquiring, banking services, local payment methods, and POS terminals. Their easy-to-integrate payment technology includes features like smart fraud prevention and dedicated customer support, allowing businesses to process local and international payments with ease. Supported by industry experts, payabl. offers over 300 payment methods and cutting-edge fraud protection using AI and machine learning. The company is renowned for its commitment to transparency, real-time bespoke reporting, and personalized customer relationships.

📋 Description

• 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.

🎯 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.