Functional Analyst – API & Data Integration

Pauwels Consulting; Anderlecht; Hybride; EUR 50 000 - 75 000; Plein temps

Résumé du poste

Pauwels Consulting in Brussels is seeking a Functional Analyst to join the real-time operations team. The role focuses on translating business requirements into detailed technical specifications for incident management and traffic monitoring projects.

You will define user stories, acceptance criteria, and system behavior, specify system-to-system integrations and non-functional constraints, and collaborate with architects, developers, and testers to ensure clarity and alignment.

Qualifications

• 3+ years of professional experience in functional analysis including the production of user stories, acceptance criteria, and business rules.
• Experience specifying system-to-system integrations using REST APIs, SOAP APIs, JSON, and XML.
• Ability to write SQL queries independently for data investigation and defect qualification.
• Proficient with Atlassian JIRA and Confluence to author and maintain technical specifications.
• Knowledge of non-functional constraints such as latency, throughput, and system availability.
• Fluent in English (C1) with at least Dutch or French (B2).

Responsabilités

• Review incoming business and user requirements to ensure completeness, consistency, and technical feasibility.
• Translate business needs into detailed functional specifications, including user stories, acceptance criteria, and system behavior.
• Specify system-to-system integrations, including interface payloads, error handling, and non-functional performance constraints.
• Collaborate with architects, developers, and testers to maintain clarity and resolve implementation questions.
• Maintain project documentation and support defect review and User Acceptance Testing campaigns.
• Perform data investigations and validate business rules by directly querying systems.

Connaissances

Functional analysis

User stories

Acceptance criteria

Business rules

REST APIs

SOAP APIs

JSON

XML

SQL

JIRA

Confluence

Non-functional constraints

English (C1)

Dutch/French (B2)

Outils

REST APIs

SOAP APIs

JSON

XML

SQL

JIRA

Confluence

Description du poste

Our client, a prominent organization in the transport and infrastructure sector, is looking for a Functional Analyst to join their real-time operations team. The role focuses on translating business requirements into detailed technical specifications for a critical incident management and traffic monitoring project.

• Review incoming business and user requirements to ensure completeness, consistency, and technical feasibility.
• Translate business needs into detailed functional specifications, including user stories, acceptance criteria, and system behavior.
• Specify system-to-system integrations, including interface payloads, error handling, and non-functional performance constraints.
• Collaborate with architects, developers, and testers to maintain clarity and resolve implementation questions.
• Maintain project documentation and support defect review and User Acceptance Testing campaigns.
• Perform data investigations and validate business rules by directly querying systems.

• 3+ years of professional experience in functional analysis, including the production of user stories, acceptance criteria, and business rules.
• You possess professional experience specifying system-to-system integrations using REST APIs, SOAP APIs, JSON, and XML.
• You bring a proven ability to write SQL queries independently for data investigation and defect qualification.
• You have experience using Atlassian JIRA and Confluence to author and maintain technical specifications.
• You possess knowledge of non-functional constraints such as latency, throughput, and system availability.
• You're experienced in working within a delivery model where functional analysis is distinct from business analysis.
• You are fluent in English at a C1 level with at least B2 level proficiency in Dutch or French.

Nice to Haves

• Knowledge of modeling notations such as BPMN or UML.
• Experience with API contract design using OpenAPI or Swagger.
• Familiarity with conceptual and logical data modelling and entity-relationship analysis.
• Participation in defect triage and test preparation within complex environments.

• Start date: 19/10/2026.
• Duration: Until 31/12/2027.
• Work regime: Full-time.
• Location: Brussels.
• Working model: Hybrid (2 days on-site per week).
• Contract: open to both permanent employees and freelancers.