Job Description

We are looking for a Senior System Analyst to join the digital banking division, a leading Polish financial institution recognised for its innovation in digital services. This role plays a key part in shaping and delivering customer-facing functionality within the bank’s mobile and online banking channels, used daily by hundreds of thousands of users.
You will be responsible for end-to-end system analysis, from gathering business needs to preparing technical specifications, supporting system integrations, and collaborating closely with product, development, UX, and QA teams.
Main Responsibilities:

Work closely with business stakeholders to elicit and analyse business needs and convert them into detailed functional and non-functional requirements.

Design and document IT solutions for mobile and electronic banking applications, ensuring alignment with user expectations and system architecture.

Define integration requirements using REST and SOAP services and collaborate with development teams to ensure smooth API implementation.

Support developers, testers, and UX designers in understanding system logic and functional flows.

Produce and maintain documentation including use cases, data models, state diagrams, and process maps using UML, BPMN, and tools like Enterprise Architect.

Participate in the preparation and validation of test cases and acceptance criteria.

Conduct impact assessments and ensure compliance with internal IT architecture and security standards.

Use tools such as Postman, Swagger, SQL, and SOAP UI to test and validate integration flows.

Actively participate in Agile ceremonies and iterative development cycles.

Requirements

Minimum 5 years of experience as a System Analyst, ideally in the banking or financial sector.

Experience working on mobile or internet banking solutions, with an understanding of digital customer journeys and security considerations.

Strong knowledge of UML, BPMN, and CASE tools (e.g. Enterprise Architect).

Hands-on experience with integration technologies – RESTful APIs, SOAP, and related tools (Postman, Swagger, SOAP UI).

Proficiency in SQL for querying and validating data.

Familiarity with Agile methodologies (Scrum, Agile PM).

Strong communication skills in Polish and good written and spoken English (min. B2 level).

Analytical mindset and attention to detail.

Nice to Have:

Experience working on responsive web and mobile app solutions in enterprise environments.
Knowledge of UX/UI design principles and modern interface patterns.
Familiarity with microservices architectures and documenting APIs using Swagger or YAML.
Understanding of architectural patterns for distributed systems.
Exposure to DevOps practices and CI/CD environments.

Benefits

Solid, competitive salary.
Work in multilingual, multinational and multicultural environment on international projects
Medical care

About Madiff

We are an international Innovation, IT and high-tech engineering consulting company that delivers unique value in a wide variety of industries.

Our mission is to add value to our customers businesses by providing digital and technological innovation services, delivering disruptive results and making our clients stand out in their market.

We are driven by a creative and innovative consulting approach strongly oriented to getting results. We MAKE THE DIFFERENCE.

Warsaw

Prosta 20

Wrocław

Rybacka 7

Lublin

Grottgera 2

Industry

IT & Software

Company Size

51-200 employees

Headquarters

Warszawa, PL

Year Founded

2015

Website

madiff.eu

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