CV – Jarosław Zelinski

Director & Principal Consultant, JZ IT Consulting Limited, Business Analyst | Systems Modeller | Application Architecture Specialist

Location: Aberdeen / Remote Availability: Contract / Consulting (UK & Global) Company Type: Sole Director – Limited Company Languages: English, Polish

Professional Summary

Senior Business Analyst and Systems Modeller with extensive experience in MBSE, UML/SysML, BPMN and V‑model methodologies. I specialise in designing clear, scalable and well‑documented system architectures mapped directly to business processes. For over a decade, I have supported engineering‑driven and regulated organisations in improving operational clarity, reducing delivery risk and building applications that behave predictably and efficiently.

I work with SMEs, public‑sector teams and global clients — both on‑site and fully remotely — providing modelling, architecture design, documentation, and ongoing system development support. My approach bridges the gap between business expectations and technical implementation, ensuring development teams receive precise, actionable models without ambiguity.

Core Competencies

  • Business Process Modelling (BPMN)
  • Systems Modelling (MBSE, UML, SysML)
  • Application Architecture Design
  • Requirements Engineering & Documentation
  • Algorithm & Logic Design for Applications
  • V‑Model & Structured Delivery Frameworks
  • Process Optimisation & Digital Transformation
  • Technical Documentation for Regulated Industries
  • Remote Collaboration with Global Teams

Professional Experience

Director & Principal Consultant — JZ IT Consulting Limited

Aberdeen / Remote — 2018–Present Providing consulting and contract services in business analysis, systems modelling and application architecture for SMEs, engineering firms and public‑sector organisations.

Key responsibilities and achievements:

  • Designed end‑to‑end business process models for operational, financial and technical workflows.
  • Delivered application architectures aligned with real business processes, reducing delivery risk and improving system clarity.
  • Created detailed algorithms and logic definitions used directly by development teams.
  • Supported digital transformation initiatives, improving efficiency and reducing operational bottlenecks.
  • Provided ongoing system development, documentation updates and architecture enhancements.
  • Collaborated with international teams across Europe and the UK in fully remote engagements.

Senior Business Analyst / Systems Modeller — Various Clients

Contract & Consulting Roles — 2013–2018

  • Led modelling and documentation efforts for complex systems in regulated environments.
  • Improved communication between business stakeholders and technical teams through clear modelling artefacts.
  • Delivered structured requirements and architecture materials used in audits and compliance reviews.

Education

Master’s of Science Degree — Military University of Technology, Poland

Publications & Research

Author of several academic publications focusing on systems modelling, process optimisation and practical applications of structured methodologies in organisational environments. Research contributions strengthen the analytical foundations of my consulting work and support evidence‑based system design.

Tools & Technologies

BPMN tools, UML/SysML modelling environments, enterprise architecture platforms, documentation systems, workflow automation tools, CASE tools.

Engagement Model

  • Limited company (Sole Director)
  • Contracting, consulting, remote or hybrid
  • Available for UK and international projects