Senior IT & Systems Integration Analyst - Remote

Billennium; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Language lessons

Shopping vouchers

Flexible hours

Job summary

Billennium seeks an IT Analyst with 5+ years in software projects, focusing on requirements analysis, system integration design, and close collaboration with technical teams to deliver key business initiatives. The role supports banking sector client delivery with agile ceremonies and cross-team coordination.

The ideal candidate will model integration using UML, craft specifications with Swagger, and apply SQL knowledge across distributed systems. Fluency in Polish and English is required.

Qualifications

• 5+ years of IT/System Analyst experience in software development projects.
• Strong knowledge of integration technologies (Web Services, Microservices, SOA).
• UML-based system modeling experience.
• Experience with CASE tools such as Enterprise Architect or PlantUML.
• Knowledge of SQL and relational databases.
• Fluent in Polish and English (B2/C1).

Responsibilities

• Validate business requirements from internal stakeholders and define functional/non-functional needs.
• Design and model system integration processes using UML diagrams.
• Prepare integration specifications using Swagger and collaborate with architects and developers.
• Coordinate technical and project dependencies across multiple IT teams and participate in Scrum ceremonies.
• Support implementation with initial integration testing and issue analysis.

Skills

Web Services

Microservices

SOA

UML modelling

SQL

Relational databases

English (B2/C1)

Polish fluency

Education

University degree in Computer Science / IT / Economics or related field

Tools

Enterprise Architect

PlantUML

Job description

Billennium seeks an IT Analyst with 5+ years in software projects, focusing on requirements analysis, system integration design, and close collaboration with technical teams to deliver key business initiatives. The role supports banking sector client delivery with agile ceremonies and cross-team coordination.

The ideal candidate will model integration using UML, craft specifications with Swagger, and apply SQL knowledge across distributed systems. Fluency in Polish and English is required.