Senior Backend Engineer (Python or OOP)

E-Frontiers – We help top tech talent find opportunities in leading product and scale‑up companies across Europe. We make sure candidates have a great experience and get the information they need to make the best career decisions.

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We are currently working with a fast‑growing international fintech , seeking a Senior Backend Engineer to join their core systems team. This is a key role where you’ll work on the platform’s multi‑currency accounting and FX systems – the backbone of the product.

What you’ll do:

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• Develop and maintain scalable, reliable backend systems that power key financial operations.
  
• Design new services and improve existing ones, tackling both microservices and legacy code.
  
• Collaborate with product and engineering teams to deliver initiatives end-to-end.
  
• Mentor colleagues and contribute to the overall technical growth of the team. xqbhyrx
  
• Take full ownership of the services you build, from development to maintenance.
  

What they offer:

• 
  
• Competitive salary and performance-based bonus
  
• Private health insurance
  
• Budget for training and certifications
  
• Open‑source‑friendly culture
  
• Hybrid model: 4 days in the office, 1 remote
  

Your profile:

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• Strong experience building complex backend systems (Python preferred, other OOP languages also welcome)
  
• Experience in fintech, banking, or regulated environments is highly valued
  
• Comfortable working with legacy code and improving it over time
  
• Strong knowledge of APIs, integration, monitoring, and alerting
  
• Excellent communication skills in English (international team)
  
• Ownership mindset and responsibility over production systems
  

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