Python Backend Developer (File Processing)

Posted 12 Days Ago
Be an Early Applicant
2 Locations
In-Office
Mid level
Fintech • Payments
The Role
Migrate legacy Perl batch jobs into modern Python services, build and maintain high-load data ingestion and transformation pipelines, implement workflow orchestration (Airflow/Prefect), add logging and alerting (Grafana/CloudWatch), and move data to S3 and relational databases for reliable financial processing and reconciliation.
Summary Generated by Built In

The role is about:
We are looking for a Mid-Level Backend Developer to support our growing File Processing team. You will be a key contributor to our migration journey, helping us move legacy batch jobs into a modern Python ecosystem. This is an ideal role for an engineer who wants to dive deep into high-load data pipelines and financial orchestration in a fast-paced fintech environment.

  • Location: Remote from Poland (Contractor arrangement) or Cyprus Onsite
  • Reporting to: Technical Lead

What you will do:

  • System Implementation: Support the re-architecture of legacy Perl batch jobs into modern, maintainable Python services.
  • Operational Reliability: Assist in implementing workflow orchestration (Prefect/Airflow) to ensure safe job re-runs and system stability.
  • Observability: Help instrument our services with logging and alerting (Grafana/CloudWatch) so we can monitor systems without direct production access.
  • Data Transformation: Work on data ingestion pipelines, moving raw data to S3 and transforming it into relational database records.

What we need:

  • Python Expertise: 3+ years of backend development experience with Python.
  • Orchestration Exposure: Familiarity or hands-on experience with orchestration tools like Airflow or Prefect.
  • AWS Fundamentals: Exposure to AWS services such as S3 and Lambda.
  • Databases: Experience with relational databases, specifically MySQL.
  • Clean Code: You write intentional, human-readable code and can explain your implementation choices without relying on AI.
  • Curiosity for Product: You care about the business logic and "why" behind the code, especially regarding payment flows and reconciliation.
  • Problem Solving: Strong analytical skills and a proactive approach to troubleshooting.
  • Collaboration: Participate in agile sprints and maintain clear English communication with the team and stakeholders.

Hiring Process:

  • Step 1 – Thinking in Action (40 minutes) Your first conversation will be with our Talent Acquisition team. We'll explore your background, career journey, motivations, and overall fit for the role. As part of this discussion, you'll also complete a short technical screening that will be reviewed by our engineering team. This stage helps us understand both your experience and how you approach technical challenges.
  • Step 2 – Build in Production (60–90 minutes) Meet with the Team Lead and technical experts for a practical assessment. Depending on the role, this may involve a live coding exercise or a real-world scenario designed to evaluate your technical skills, problem-solving approach, and ability to work through challenges similar to those faced by our teams.
  • Step 3 – Final Interview (45 minutes) The final stage is a group interview with senior members of our Technology squad, which may include the CTO, CPO, and Team Lead. Together, we'll discuss team fit, collaboration style, expectations from both sides, and any remaining questions about the role, team, or technology domain. This is also an opportunity for you to learn more about our culture and ways of working.

The perks of being a payabl.er: 

  • Future-Proof Your Finances: Once you’ve passed probation, we’ll kickstart your Provident Fund to secure your future. 
  • Grow with Us: Annual Learning Budget for professional development (eligible after probation)—because your growth is our growth. 
  • Wolt Your Way Through Lunch: €150 monthly Wolt allowance to keep you fueled and happy.
  • Stay Active Your Way: Enjoy a SportsBenefits membership giving you access to a wide variety of gyms and sports facilities to support your active lifestyle.
  • Drive in Style:  After one year with us, you may be eligible for a company car—performance and availability permitting. 
  • Park with Ease: Complimentary parking space just steps from the office, so your commute is as smooth as your workday.
  • Max Out Your Downtime: 25 days of vacation + public holidays + 10 days of sick leave.
  • Shop & Save: Exclusive local discount card + tickets for exciting events like Beonix, basketball games, and more. 
  • Speak Like a Local: Join free Greek language classes, twice a week, open to all team members. 
  • Celebrate Together: We bring colleagues from all offices together for unforgettable company celebrations.
  • Global Collaboration & Events: Opportunities to participate in international company events and initiatives, connecting with colleagues from all regions and contributing to a truly global community

The benefits listed above are for our Cyprus office location only, a list of benefits and contract type will be assessed subject to your location and discussed in the first interview with your Talent Acquisition Partner.

Let's embark on a journey to redefine the landscape of payments together. We're not just offering a role; we're inviting you to be a part of something bigger. Join our team, and let's innovate, disrupt, and lead the future of payments. Together, we can make an impact that resonates. Welcome to the team! 

Please review our Privacy Policy to understand how we process your personal data during the recruitment process: https://payabl.com/privacy-policy

Skills Required

  • 3+ years backend development experience with Python
  • Familiarity or hands-on experience with Airflow or Prefect
  • Exposure to AWS services such as S3 and Lambda
  • Experience with relational databases, specifically MySQL
  • Write intentional, human-readable code and explain implementation choices
  • Understanding of payment flows, reconciliation, and business logic
  • Strong analytical skills and proactive troubleshooting
  • Ability to participate in agile sprints and maintain clear English communication
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The Company
HQ: London
151 Employees
Year Founded: 2011

What We Do

We are payabl., a paytech expert empowering merchants to take, make and manage payments globally. Our full solution stack includes card acquiring, alternative payment methods, payment accounts and prepaid cards. Welcome to payabl., where we take care of the payments, so you can take care of business. #payments #paytech #fintech

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