Functional Analyst

Keystone Solutions; Brussel; Hybride; EUR 60 000 - 90 000; Plein temps

Résumé du poste

Keystone Solutions is seeking a Functional Analyst consultant for a strategic transformation project with a major client. You will bridge business needs and IT, designing and evolving systems for billing, revenue, and revenue assurance, while enabling front-end teams through robust APIs and modular services.

Based in Brussels, the role features a hybrid model (3 days in office, 2 days remote). You will translate complex requirements into modular specifications, work with architects and

Qualifications

• 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).

Responsabilités

• 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.

Connaissances

Functional Analyst

UML

BPMN

API specs

Modular architecture

Requirements structuring

English communication

Outils

Sparx EA

Draw.io

Postman

API gateways

Description du poste

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 actionable and aligned with architectural principles.
• We prioritize effective communication and continuous improvement, translating complex needs into coherent, testable solutions.

Why Join This Mission?

• Be part of modernizing core systems and shaping the future of digital services for a large European operation.
• Work in a collaborative, cross-functional environment with real impact on both internal users and external-facing platforms.
• Operate with the support and structure of Keystone Solutions while directly contributing to the clients strategic transformation.

Location and Work Setup

• Brussels-based consultancy mission with a hybrid model: 3 days on-site and 2 days remote.

Role-Specific Impact as a Consultant

• Bridge the gap between business and technology, ensuring functional continuity across complex processes and systems.
• Empower front-end teams via well-specified APIs and modular services, and support domain-driven design practices.
• Drive quality by challenging requirements, improving documentation clarity, and contributing to testing strategies and validation.