Functional Analyst

Mission Overview

Join Keystone Solutions as a Functional Analyst consultant for a mission at our client. The client is undergoing a strategic transformation to become a more digitally driven organisation, serving 100 million annual customers. As a Keystone Solutions consultant, you will support the digital transformation of the customer experience across the group. The role is based in Brussels with a hybrid arrangement: 3 days in the office and 2 days remote.

About the Role

We are looking for a Functional Analyst who combines strong analytical and modeling skills with a deep understanding of business processes and modern IT architecture. You will play a key role in designing and evolving systems that support billing, revenue collection, and revenue assurance processes while also enabling front-end teams through robust APIs and modular services. This is not a traditional Business Analyst role. We are looking for someone who can bridge the gap between business needs and technical implementation, ensuring continuity across complex processes and systems. As a Keystone Solutions consultant, you will perform these responsibilities on-site and in close collaboration with the clients teams.

Key Responsibilities

• Analyze and model business processes using UML, BPMN, and API modeling tools.
• Translate business needs into functional specifications that are modular, service-oriented, and technically coherent.
• Collaborate with architects, developers, and business stakeholders to ensure end-to-end process alignment.
• Challenge and refine requirements to ensure they are complete, consistent, and aligned with architectural principles.
• Ensure functional continuity across systems and teams — not just within your own scope.
• Support the transformation from legacy systems to modular, API-driven architecture.
• Document and communicate complex information in a structured and accessible way.
• Contribute to testing strategies and validate functional deliverables.

What Were Looking For (Must-Have Skills & Experience)

• Proven experience as a Functional Analyst, Solution Analyst, or similar role in complex IT environments.
• Strong modeling skills: UML, BPMN, API specifications (e.g., Swagger/OpenAPI).
• Experience working with modular, service-based, or domain-driven architectures.
• Ability to structure, summarize, and challenge information and requirements.
• A critical thinker with a strong sense of ownership and curiosity.
• Excellent communication skills in English (written and spoken).

Nice-to-Have

• Experience in customer/contract/case management domains.
• Familiarity with tools like Sparx EA, Draw.io, Postman, or API gateways.
• Understanding of Agile delivery methods and DevOps environments.

Consultancy Nature of Work (at Keystone Solutions)

• Operate as a Keystone Solutions consultant embedded with the clients teams, combining on-site collaboration in Brussels (3 days per week) with remote work (2 days per week).
• Deliver value through clear, structured functional analysis while aligning with the clients strategic move toward modular, API-driven architecture.
• Ensure seamless coordination between business and technical stakeholders as part of Keystones consultancy approach.

Dynamic Projects

• Engage with mission-critical processes such as billing, revenue collection, and revenue assurance.
• Contribute to the design and evolution of front-end enablement through robust APIs and modular services.
• Tackle end-to-end process alignment challenges across multiple systems and teams within a large European footprint.

Turbo-Charged Learning and Development

• Access Keystone Solutions professional development support, mentorship, and knowledge-sharing across engagements.
• Broaden your expertise in UML, BPMN, API specifications, and domain-driven or service-based architectures through real-world application.
• Learn best practices for legacy-to-modern architecture transformations with guidance from Keystones senior consultants.

Ambition Skyrocketing within a Consultancy Framework

• Accelerate your career by delivering measurable impact on high-visibility client initiatives.
• Build a portfolio of achievements across complex IT environments, enhancing your profile as a trusted Functional Analyst.
• Benefit from Keystones structured career pathways, enabling growth through varied client engagements.

Keystone Solutions Values in Action

• As a K-Stone, you bring clarity, ownership, and collaboration to every client mission.
• We champion integrity, craftsmanship, and user-centricity, ensuring every functional specification is act