Senior Python Engineer

LE004 Blankfactor SAS (Colombia)

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Bulgaria - Sofia Until 8/21/2026 First posted March 21, 2025 Last posted March 21, 2025
Job description

What we do 

At Blankfactor, we are dedicated to engineering impact. We are passionate about creating value by building best-in-class tech solutions for companies looking to transform, innovate, and scale. In every project, we aim to deliver work that moves the needle and drives measurable outcomes for our partners and clients. Our full-stack development, data engineering, digital product, and enterprise AI solutions cater to a range of industries, including payments, banking, capital markets, and life sciences.

We are headquartered in Miami, Florida, have offices in Bulgaria, Colombia and Romania, and are rapidly expanding our global footprint. Our culture of engineering excellence, technical expertise, and care for both our clients and our talented workforce has made us one of the fastest-growing companies in America. 

We only hire the best and brightest. If you have talent and ambition, join us and be part of an environment that fosters innovation, collaboration, and growth. Welcome to Blankfactor!

What to expect on this role

We are seeking for a skilled and experienced Senior Python Engineer to join our dynamic team. If you are passionate about the payments industry, possess a good understanding of card issuing processes, and excel in analyzing and optimizing payment workflows, we invite you to apply for this exciting opportunity.

As the Senior Python Engineer specializing in card issuing, you will assume a pivotal role in designing, developing, and maintaining cutting edge payment solutions. Leveraging your wealth of experience and strategic insight, you will intricately design, optimize, and drive the evolution of payment ecosystems, with a specific emphasis on card issuance.

  • Design, develop, and maintain Python-based applications and systems, with a focus on card issuing, ensuring alignment with business objectives and scalability.
  • Define and roll out guidelines for clean, efficient, and maintainable code following best practices and coding standards.
  • Provide strategic guidance on technology selection, system integration, and overall solution design.

Qualifications and Tech Proficiency

  • Proven experience of at least 5+ years on a technical role 
  • Proven experience in fraud prevention and detection, with specific expertise in implementing 3-D Secure authentication protocols and utilizing Featurespace's AI-driven fraud detection solutions
  • Experience and proficiency in communicating with clients.
  • Experience in payments with a focus on card issuing.
  • Understanding of card program management, including issuing, activation, and lifecycle management.
  • Outstanding verbal and written communication skills, with the ability to articulate complex concepts to both technical and non-technical audiences.

What you can expect as a member of the Blankfactor team

  • Competitive salary aligning with industry benchmarks
  • 25 days paid vacation based on seniority level
  • Premium private health insurance coverage
  • Sports benefits subscription
  • $500 dedicated self-development budget
  • Meal tickets
  • Friendly office atmosphere
  • Diverse client portfolio
  • Cutting-edge high-tech stack
  • Fintech Expertise: expertise in machine learning, data science, big data, and AI, driving innovation and cutting-edge solutions
  • Continuous Learning Culture and Support
  • Monthly on-site gatherings

We believe that diversity of experience and background contributes to more robust ideas and a stronger team. All qualified applicants will receive consideration for employment without regard to religion, race, sex, sexual orientation, gender identity, national origin, or disability.

About this role

Summary

Design and develop Python applications focused on card issuing and payment solutions.

Job title

Senior Python Engineer

Experience level

5+ years

Industry

software

Location requirements

Located in Bulgaria, remote work not mentioned.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

pythonfraud prevention3-D Securepaymentscard program managementcommunication

Preferred skills

machine learningbig dataAI

Specializations

paymentscard issuingfraud preventionAIdata science
Locations

Structured locations inferred from the posting.

Sofia, Bulgaria

On-site City