Senior Backend Developer – File Processing

payabl.

Senior Backend Developer focusing on file processing and pipeline migration for eCommerce payment processing. Joining a lean team to build modern, observable architecture.

Posted 6/22/2026full-timeRemote • 🇵🇱 PolandSeniorWebsite

Tech Stack

Tools & technologies

AirflowAWSGrafanaMySQLPerlPostgresPython

About the role

Key responsibilities & impact

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

What you’ll need

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.

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account payabl. Website LinkedIn All 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. Senior Backend Developer – File Processing 🔥 30 minutes ago 🇵🇱 Poland – Remote ⏰ Full Time 🟠 Senior 🔙 Backend Engineer Airflow AWS Grafana MySQL Perl Postgres Python Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 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. Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Senior Full-Stack Software Engineer – Javascript, Typescript, Node 🔥 5 hours ago Fandom 201 - 500 📱 Media 🎮 Gaming Website LinkedIn All Job Openings Senior Full-Stack Engineer at Fandom working on innovative CRM and video platforms. Integrating technologies and maintaining high-quality solutions for user engagement and business value. 🇵🇱 Poland – Remote 💵 zł205.3k / year ⏰ Full Time 🟠 Senior 🔙 Backend Engineer Angular Java JavaScript Node.js PHP React TypeScript Vue.js Senior Go Engineer 🔥 9 hours ago Bonapolia 11 - 50 🎯 Recruiter 🤝 B2B Website LinkedIn All Job Openings Go developer working on regulatory and compliance projects for a global mobility and urban services platform. Join a team collaborating on production-ready solutions in a fully remote environment. 🇵🇱 Poland – Remote ⏰ Full Time 🟠 Senior 🔙 Backend Engineer Docker Kafka Kubernetes MySQL Redis Go Senior Back-end Engineer, NodeJS 🔥 10 hours ago Swing Development (SwingDev) 11 - 50 🤖 Artificial Intelligence 💳 Fintech ☁️ SaaS Website LinkedIn All Job Openings Senior Back-end Developer at SwingDev working on innovative InsurTech solutions. Collaborating in an agile team to enhance backend systems and APIs for home insurance. 🇵🇱 Poland – Remote 💵 zł26k - zł32k / month ⏰ Full Time 🟠 Senior 🔙 Backend Engineer JavaScript Kubernetes Microservices MySQL Node.js Postgres SQL TypeScript Senior Backend Developer, Python 🕒 2 days ago Emerson 10,000+ employees 🏢 Enterprise ⚡ Energy ☁️ SaaS Website LinkedIn All Job Openings Senior Backend Developer (Python) for healthcare projects at Mirumee Software. Building web applications and leading less experienced team members in a fully remote setup. 🇵🇱 Poland – Remote 💵 PLN17.5k - PLN23k / month ⏰ Full Time 🟠 Senior 🔙 Backend Engineer Distributed Systems Docker Flask GraphQL Linux Python SQL Unix Senior Software Engineer, .NET, AWS 🕒 2 days ago Software Mind 1001 - 5000 🤖 Artificial Intelligence ☁️ SaaS 📡 Telecommunications Website LinkedIn All Job Openings Senior Software Engineer building scalable AWS solutions for global organizations. Developing Sitecore-based platforms and enhancing health, safety, and risk-management capabilities. 🇵🇱 Poland – Remote 💰 Private Equity Round on 2020-12 ⏰ Full Time 🟠 Senior 🔙 Backend Engineer AWS Cloud Docker DynamoDB GraphQL Kubernetes Microservices MongoDB React Sitecore .NET View More Backend Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

PythonPerljob orchestrationdata processingrelational databasesclean codestructured loggingmetricsfile ingestiondata transformation

Soft Skills

communicationtechnical documentationbest practicesengineering logicuser-centric thinking