Senior API Data Analyst — Domain & Contract Design (Hybrid)

Jit Team; Warszawa; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work

International teams

Scandinavian culture

English language daily

Job summary

Jit Team in Warsaw is seeking a seasoned Business/Data Analyst to drive analysis, data modeling, and API design for STO Domain API projects. You will translate business requirements into technical designs and collaborate with cross-functional teams across delivery and source-system domains.

Responsibilities include defining data models, canonical data definitions, and planning inputs for quarterly cycles; ensuring alignment of data and system dependencies with business rules and contract-first

Qualifications

• 5+ years of experience in business analysis, data analysis, or related roles.
• Strong data analysis and mapping capabilities.
• Ability to translate business rules into concrete examples and acceptance criteria.
• Ability to work across business, consumer, and source-system teams.
• Understanding of custody positions, subpositions, reservations, and corporate actions.
• Knowledge of data description using XML, XSLT, JSON, and AVRO.

Responsibilities

• Analyse and align business requirements, data models, system flows, and dependencies, and translate them into clear technical designs and implementable delivery tasks.
• Design and document services (contracts) in and around the STO Domain API, including rules for transformation logic.
• Support contract-first API definition with producers, primarily the safekeeping system.
• Define data mapping and the canonical data model.
• Raise and coordinate requirements during quarterly/PI planning.
• Establish business rules and valid request and response examples.

Skills

Strong data analysis

Data mapping

Requirements translation

Cross-team collaboration

Tools

XML

XSLT

JSON

AVRO

Job description

Jit Team in Warsaw is seeking a seasoned Business/Data Analyst to drive analysis, data modeling, and API design for STO Domain API projects. You will translate business requirements into technical designs and collaborate with cross-functional teams across delivery and source-system domains.

Responsibilities include defining data models, canonical data definitions, and planning inputs for quarterly cycles; ensuring alignment of data and system dependencies with business rules and contract-first