Hybrid Brussels: Functional Analyst for API-driven Transformation

Keystone Solutions; Brussel Hoofdstad; Hybrid; EUR 60,000 - 90,000; Full time

Job summary

Keystone Solutions in Brussels seeks a Functional Analyst to join our consultancy team for a mission with a mobility client serving 100 million customers across Europe. You will analyze processes, model with UML/BPMN, and design modular, API-driven systems for billing, revenue collection, and revenue assurance.

The role blends business insight with technical know-how, bridging needs and implementation. You will work on-site three days and remote two days, collaborates with architects, developers

Qualifications

• Proven experience as a Functional Analyst or similar role in complex IT environments.
• Strong modeling skills using UML, BPMN and API specifications.
• Experience with modular, service-based or domain-driven architectures.

Responsibilities

• Analyze and model business processes using UML, BPMN and API modeling tools.
• Translate business needs into functional specifications that are modular and service-oriented.
• Collaborate with architects, developers and stakeholders for end-to-end alignment.
• Challenge and refine requirements to align with architectural principles.
• Ensure functional continuity across systems and teams.
• Support transformation to modular, API-driven architecture.
• Document information clearly and contribute to testing strategies and validation.

Skills

Functional Analyst

Solution Analyst

UML

BPMN

API specs

Swagger/OpenAPI

Modular architectures

English comms

Tools

Sparx EA

Draw.io

Postman

API gateways

Job description

Keystone Solutions in Brussels seeks a Functional Analyst to join our consultancy team for a mission with a mobility client serving 100 million customers across Europe. You will analyze processes, model with UML/BPMN, and design modular, API-driven systems for billing, revenue collection, and revenue assurance.

The role blends business insight with technical know-how, bridging needs and implementation. You will work on-site three days and remote two days, collaborates with architects, developers