Python Developer (44320)

Do you know how payment data really travels between banking systems? An international IT services company is looking for a Python Developer focused on backend integrations for a large Nordic bank in Stockholm. You will build and maintain a conversion tool that translates payment data between payment initiation systems and a payment processing engine, working with Apache Kafka, Linux and secure file transfers – as part of a programme modernising payments in Swedish kronor in line with ISO 20022.

🚀 Project
- modernisation of payment processing in Swedish kronor (SEK) and ISO 20022 compliance
- development and maintenance of a Python conversion tool between payment initiation systems and a payment engine
- file-based and event-driven integrations, message exchange via Apache Kafka
- secure file transfers using SFTP, WinSCP and PGP encryption
- Linux environments and shell scripts, troubleshooting of integration issues
- collaboration with external software suppliers in an agile team (Jira, Confluence, Scrum, Kanban)
- contract CP from 11/2026 for one year, Stockholm, hybrid with 40 % home office

🎯 Skills
- strong hands-on Python for backend applications, integration tools or data conversion
- file-based integrations between applications and systems
- Apache Kafka, event-driven architectures and message processing
- Linux and shell scripting (Bash)
- SFTP, WinSCP and PGP encryption
- experience with banking systems, payment processing or financial transactions
- collaboration with third-party vendors, Jira & Confluence, Scrum / Kanban, English C1

💡 Nice to have
- ISO 20022 financial messaging standards
- SEK credit transfer payment processes
- XML payment message formats (pain.001, pacs.008, pacs.002)
- integration of payment engines, banking platforms or transaction processing systems

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