Python Developer – Banking Domain with ML/AI Expertise - Tieto Tech Consulting (m/f/d)

Tieto; Warszawa; Hybrid; PLN 233,545 - 318,471; Full time

Job summary

Tieto is searching for an experienced Python Developer specializing in the banking domain with expertise in ML/AI solutions. This role involves building and maintaining backend services, developing data pipelines, and ensuring compliance with financial regulations.

The ideal candidate will have strong proficiency in Python, a solid understanding of banking systems, and experience with ML pipelines. The position offers a full-time contract with 3 days in the office each week and promotes a culture of diversity and inclusion.

Qualifications

• Strong Python proficiency with frameworks like Flask or Django.
• Solid experience in banking or financial services.
• Understanding of financial messaging frameworks is essential.

Responsibilities

• Design, build, and maintain backend services using Python.
• Develop data pipelines for ML/AI models.
• Integrate with banking systems and payment platforms.

Skills

Python proficiency (Flask, FastAPI, Django or similar)

Experience in banking or financial services (payments, transaction flows, AML/FCP)

Understanding of Swift MT/MX, SEPA, ISO20022

Experience with ML/AI pipelines and MLOps

Knowledge of SQL/NoSQL databases

Familiarity with cloud environments (AWS/Azure/GCP)

Experience with CI/CD, DevOps tooling

Tools

Docker

Kubernetes

Job description

Python Developer – Banking Domain with ML/AI Expertise

Location: Poland (Tricity / Warsaw / Łódź - 3 days in the office)

Seniority: Mid / Senior

Employment Type: Full-time

About The Role

We are looking for an experienced Python Developer with strong banking domain knowledge and hands‑on experience in machine learning / AI solutions.

Key Responsibilities

• Design, build, and maintain backend services and tools using Python.
• Develop data pipelines for ML/AI models, including feature engineering & preprocessing.
• Collaborate with data scientists on deploying ML/AI models into production.
• Integrate with banking systems, payment platforms, and financial messaging.
• Build secure, high-performance APIs and microservices.
• Ensure compliance with financial regulations, security, and data governance standards.
• Optimize existing services for scalability and performance.
• Write clean, testable, well‑documented code.
• Participate in architecture design, code reviews, and troubleshooting.

Required Skills & Qualifications

• Strong Python proficiency (Flask, FastAPI, Django or similar).
• Solid experience in banking or financial services (payments, transaction flows, AML/FCP use cases, or similar).
• Understanding of Swift MT/MX, SEPA, ISO20022, or financial messaging frameworks.
• Experience with ML/AI pipelines, model serving, and MLOps concepts.
• Knowledge of SQL/NoSQL databases.
• Familiarity with cloud environments (AWS/Azure/GCP).
• Experience with CI/CD, DevOps tooling, and test automation.

Nice to Have

• Knowledge of containerization (Docker, Kubernetes).
• Experience with data governance, model risk management, or AI compliance.
• Background in event‑driven architectures or streaming platforms.
• Information about the salary range and the criteria used to determine remuneration will be shared with candidates prior to the interview process and confirmed before an offer is made.

Additional Information

At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.