Specialist - Financial Management

JLL supports the Whole You, personally and professionally.

Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology to our clients. We are committed to hiring the best, most talented people in our industry; and we support them through professional growth, flexibility, and personalized benefits to manage life in and outside of work. Whether you’ve got deep experience in commercial real estate, skilled trades, and technology, or you’re looking to apply your relevant experience to a new industry, we empower you to shape a brighter way forward so you can thrive professionally and personally.

Position Overview

The CoStar Migration & Portfolio OS Specialist will serve as a dual-role Subject Matter Expert (SME) supporting both the CoStar migration initiative and the Portfolio OS project within the Accelerate AI framework. This position combines critical system transition leadership with AI-driven process automation expertise, focusing on seamless database migration and the automation of lease administration standard processes.

What You'll DoLead CoStar migration efforts by serving as the primary Subject Matter Expert, guiding Lease Administration teams through system transition and providing hands-on support throughout the migration lifecycle

Design and deliver targeted training programs, including account-specific materials, to upskill teams on CoStar functionality and ensure smooth adoption across EMEA regions

Oversee data validation and integrity checks during migration, working closely with teams to verify accuracy and resolve discrepancies between legacy and new systems

Develop comprehensive process maps and standard operating procedures for both standard and specialized accounts, documenting workflows and identifying process improvement opportunities

Create and execute detailed test cases across Pega, CoStar, and Portfolio UAT environments, performing complete invoice abstraction and variance reporting cycles to train AI agents

Extract, analyze, and interpret large datasets from multiple systems (Pega, CoStar, Prohance) to provide actionable insights, identify trends, and support data-driven decision-making

Participate actively in cross-regional collaboration through regular calls and MS Teams communication, clearly articulating lease administration workflows and system-specific requirements

Drive continuous improvement initiatives by proposing system enhancements, updating process manuals, and ensuring alignment with JLL Global Policies and Procedures

What We're Looking ForExpert-level knowledge of standard lease administration processes with particular understanding of EMEA-specific invoice tracking, billing cycles, and compliance requirements

Proven proficiency with Pega and Portfolio/CoStar systems, with hands-on experience navigating system transitions and managing parallel operations

Exceptional attention to detail with a keen ability to identify data discrepancies, process gaps, and opportunities for operational efficiency

Strong analytical capabilities to work with large, complex datasets and translate findings into clear recommendations and actionable insights

Demonstrated experience in user acceptance testing (UAT), test case development, and validating system functionality in migration environments

Understanding of AI and automation principles, particularly as they apply to lease administration and invoice processing workflows

Outstanding communication skills with the ability to explain technical concepts and complex processes to diverse audiences across multiple regions and seniority levels

Highly organized and collaborative working style with proven ability to manage multiple concurrent workstreams, prioritize effectively, and work seamlessly across cross-functional teams

What You Can Expect From Us:

Competitive Rewards & Benefits: Permanent contract, private healthcare, cafeteria system, life insurance, and employee assistance program.

Flexible Work Environment: Hybrid model in premium Warsaw Spire workspace with state-of-the-art facilities and metro access.

Career Development & Growth: Robust development opportunities with 80% employee participation in structured programs, AI upskilling, and professional training.

Stability & Recognition: 78% employee recommendation rate, recognized for 18 consecutive years as one of the World's Most Ethical Companies.

Inclusive & Supportive Culture: Strong commitment to Diversity, Equity & Inclusion across multiple employee resource groups and initiatives.

Global Perspective: 60 nationalities and 40 languages represented, offering rich cultural exchange and collaboration opportunities.

If this job description resonates with you, we encourage you to apply even if you don’t meet all of the requirements below. We’re interested in getting to know you and what you bring to the table!

Personalized benefits that support personal well-being and growth:

JLL recognizes the impact that the workplace can have on your wellness, so we offer a supportive culture and comprehensive benefits package that prioritizes mental, physical and emotional health.

About JLL –

We’re JLL—a leading professional services and investment management firm specializing in real estate. We have operations in over 80 countries and a workforce of over 102,000 individuals around the world who help real estate owners, occupiers and investors achieve their business ambitions. As a global Fortune 500 company, we also have an inherent responsibility to drive sustainability and corporate social responsibility. That’s why we’re committed to our purpose to shape the future of real estate for a better world. We’re using the most advanced technology to create rewarding opportunities, amazing spaces and sustainable real estate solutions for our clients, our people, and our communities.

Our core values of teamwork, ethics and excellence are also fundamental to everything we do and we’re honored to be recognized with awards for our success by organizations both globally and locally.

Creating a diverse and inclusive culture where we all feel welcomed, valued and empowered to achieve our full potential is important to who we are today and where we’re headed in the future. And we know that unique backgrounds, experiences and perspectives help us think bigger, spark innovation and succeed together.