Željka Senji
Product Designer
Zagreb
Summary
Product Designer/Owner with technical skills in integration and microservices. Experienced in defining features, preparing detailed technical specifications, and collaborating with cross-functional teams to deliver and enhance Customer/Partner Management solutions.
Overview
18
18
years of professional experience
6
6
Certifications
Work History
Product Designer
ZIRA Group
03.2021 - Current
- Collaborate directly with clients to gather, analyze, and refine business and technical requirements.
- Participate in project scoping sessions, providing effort estimation, design planning, and delivery timelines.
- Produce comprehensive High-Level and Low-Level Designs, incorporating system architecture, process flows, sequence diagrams, and system integration specifications.
- Create detailed user stories, use cases, and acceptance criteria, ensuring clear communication of functional requirements to development and QA teams.
- Cooperate with other designers and cross-functional teams to maintain consistency, alignment, and shared understanding across projects.
- Work with engineering teams to ensure designs were technically feasible and optimized for performance.
- Developed innovative product concepts through extensive market research and competitor analysis.
- Presented design concepts and prototypes to executive teams, securing approval and funding for development.
- Perform live product demos to clients and stakeholders, clearly communicating design intent and feature capabilities
Solution Designer
Croatian Telecom
12.2019 - 03.2021
- Led end-to-end solution design for customer-facing order placement applications as part of a major IT&Business transformation project within Croatian Telecom.
- Defined technical architecture integrating front-end systems with core back-end platforms including Product Catalog, Common Layer, Order Provisioning, and Service Inventory systems.
- Collaborated with cross-functional teams (business analysts, developers, architects, and testers) to ensure alignment of solution design with business requirements and enterprise architecture standards.
- Designed and documented integration flows using REST APIs and middleware platforms to enable seamless data exchange across systems.
- Acted as a technical advisor, contributing to solution reviews, impact assessments, and governance processes for new features and system changes.
- Supported agile delivery cycles, providing ongoing technical clarification and design updates during sprints.
- Strong domain knowledge of telecom services, BSS architecture, and order-to-activate process workflows.
Technical Lead
Croatian Telecom
01.2017 - 12.2019
- Designed new business processes for telecom services, driving transformation of the customer order journey from initiation to fulfillment.
- Owned the end-to-end technical solution design for a customer-facing order placement application which included seamless integration with CRM, Order Management and Billing
- Led a team of 10 developers, overseeing task assignments, daily stand-ups and monitoring to ensure consistent delivery.
- Performed sprint planning and backlog grooming, aligning development activities with project timelines and stakeholder priorities.
- Performed pre-QA product validations, reviewing features post-development to ensure they meet functional and design specifications before handoff to QA.
- Worked closely with business analysts and enterprise architects to ensure technical designs align with business requirements and architectural standards.
- Defined and managed integration workflows via APIs and middleware between customer interfaces and backend systems, enabling real-time service activation and accurate billing.
- Responsible for technical decisions, risk identification, and issue resolution throughout the project lifecycle.
Information Systems Designer
Croatian Telecom
12.2012 - 12.2016
- Translated business specifications from Marketing and Proposition teams into detailed technical designs for new teleco product offerings.
- Created high-level and low-level solution designs, ensuring alignment with existing IT architecture and integration standards.
- Developed backend and integration components using Oracle (PL/SQL, procedures) and .NET technologies (C#, ASP.NET), supporting new service launches
- Performed development-level testing to validate code logic, data flows, and integration points before handoff to QA.
- Collaborated with QA teams, providing technical support, debugging assistance, and clarifications during testing cycles.
- Led production deployment activities, including release preparation, environment configuration, and go-live coordination.
- Provided post-production support, resolving issues, monitoring system performance, and ensuring stability for newly released features.
- Maintained comprehensive documentation, including design specifications, deployment guides, and support handover materials.
IT Application Designer-Developer
SIT Solutions
07.2011 - 12.2012
- Designed and developed new features for internal HR applications, enhancing functionality to support employee management, workflows, and reporting.
- Created high-level and low-level technical designs, translating business requirements into new solutions.
- Developed application components using Oracle (PL/SQL, stored procedures) and .NET technologies (C#, ASP.NET)
- Conducted development testing to validate functionality, data integrity, and system integration prior to QA handoff.
- Collaborated with QA teams, offering technical support, fixing defects, and ensuring test coverage for new functionalities.
- Maintained and updated existing application modules, ensuring compatibility with evolving business needs and technical standards.
- Documented design specifications and development activities
Software Developer
Infodom
11.2006 - 07.2011
- Developed new software features for various telecom client projects, implementing business requirements based on detailed functional and technical specifications.
- Worked with Oracle and .NET technologies, including PL/SQL, stored procedures, C#, and ASP.NET, to build backend logic and user-facing components.
- Performed development testing, validating functionality, integration, and data handling to ensure readiness for QA.
- Collaborated with QA teams, providing technical support during testing cycles and resolving issues or defects promptly.
- Maintained existing codebases, implementing updates and optimizations to ensure system stability.
Education
Master of Science - Computer Science
Faculty of Electrical Engineering And Computing
Zagreb, Croatia 04.2001 -
Skills
Product design
Product management
Product specifications
Product testing
Process design
Technical support
User interface design
Teamwork and collaboration
Analytical thinking
Attention to detail
Certification
TMF - Business Process Framework (eTOM) Fundamentals
Timeline
TMF - Business Process Framework (eTOM) Fundamentals
05-2024
TMF - Customer Centricity Foundation
05-2024
TMF - ODA Component Fundamentals
05-2024
TMF - Open Digital Framework (ODF)
05-2024
TMF - Information Framework (SID) Fundamentals
02-2022
TMF - Open API Fundamentals
02-2022
Product Designer
ZIRA Group
03.2021 - Current
Solution Designer
Croatian Telecom
12.2019 - 03.2021
Technical Lead
Croatian Telecom
01.2017 - 12.2019
Information Systems Designer
Croatian Telecom
12.2012 - 12.2016
IT Application Designer-Developer
SIT Solutions
07.2011 - 12.2012
Software Developer
Infodom
11.2006 - 07.2011
Master of Science - Computer Science
Faculty of Electrical Engineering And Computing
04.2001 -
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