Software Engineer

Proximus Group; Brussel Hoofdstad; Hybrid; EUR 50,000 - 80,000; Full time

Benefits offered by this job

Access to training modules

Minimum 5 days of training per year

Job summary

Proximus is seeking a full-stack AI software engineer to evolve an internal AI platform. You will translate business needs into user stories, develop solutions, and onboard teams to new AI capabilities.

The role focuses on adoption, workshops, and continuous improvement, with a strong emphasis on collaboration and documentation. The position is a 3-month contractor assignment in Brussels, hybrid with on-site days, and involves working with Azure, Kubernetes, and Terraform in a fast-paced, agile

Qualifications

• Good understanding of LLM harnesses and agent workflows.
• Familiar with MCP, RAG, structured outputs, and prompt engineering.
• Understanding of CI/CD pipelines; Azure, Kubernetes and Terraform knowledge is valuable.
• Code development in Python and TypeScript.
• Designing test scenarios and automated evaluations of models and tools.
• Read harness logs and investigate context, latency, or failed tool calls.
• Proven experience as Functional Analyst; requirements engineering.
• Experience with digital UX, design thinking and collaboration platforms.
• Proactive in onboarding and stimulating user adoption; strong communication.

Responsibilities

• Develop and validate solutions and functionality.
• Onboard users and teams to new AI capabilities and ways of working.
• Facilitate demonstrations, workshops, and feedback sessions.
• Support users in adopting AI assistants, skills, and workspaces.
• Measure user feedback to continuously improve the platform.
• Translate business needs into user stories, functional requirements, acceptance criteria.
• Define functional and non-functional requirements.
• Assess AI capabilities of internal/external platforms and recommend enhancements.
• Maintain clear documentation and ensure traceability from business need to delivered solution.

Skills

LLM harnesses

Agent workflows

CI/CD pipelines

Azure

Kubernetes

Terraform

Python

TypeScript

Test scenario design

Model evaluation

Tool integration

Documentation

Agile methods

Figma

Targetprocess

Requirements engineering

User experience design

Job description

Job location: Brussels, Belgium Hybrid (At least 40% including one day per week on site in Brussels)

Job Contract: Contractor assignment, starting for 3 months, potentially extendable

Job weekly hours: 40 hrs./week

Mission

Support the evolution and adoption of the internal AI platform of the Design & Value Streams Acceleration department.

As a full-stack AI software engineer, you translate business needs into clear requirements, user stories, and acceptance criteria. You develop and validate proposed solutions with stakeholders, onboard and support users to drive adoption, and provide implementation guidance.

The internal AI platform supports designers, marketers, communicators, product teams, agile coaches, scrum masters, and other digital professionals through AI assistance, skills, knowledge repositories, project workspaces, and integrations with enterprise platforms.

Key Responsibilities

• Develop and validate solutions and functionality.
• Onboard users and teams to new AI capabilities and ways of working.
• Facilitate demonstrations, workshops, one-on-one hands on, and feedback sessions.
• Support users in adopting and effectively leveraging AI assistants, skills, and workspaces.
• Measure and collect user feedback to continuously improve the platform.
• Translate business needs into user stories, functional requirements, acceptance criteria, and process flows.
• Define functional and non-functional requirements.
• Assess AI capabilities of internal and external platforms and formulate recommendations for future enhancements.
• Maintain clear documentation and ensure traceability from business need to delivered solution.

Expected outcome

Develop and test the platform functionality, increase its adoption and business value by ensuring that the right solutions are delivered, validated, and effectively used by end users.

Profile

Technical skills

• Good understanding of LLM harnesses and agent workflows
• LLM tooling and integrations: familiar with MCP, RAG, structured outputs, and prompt engineering
• Understand CI/CD pipelines and investigate build or deployment failures. Familiarity with Azure, Kubernetes, and Terraform is valuable.
• Code review, development, improvement, and optimization. Development experience in Python and TypeScript is a plus.
• Ability to design test scenarios and automated evaluations of model behavior, tool use, and end-to-end workflows. Rigorous solution validation skills.
• Logs and debugging: Read harness logs and agent execution traces, inspect model responses and tool inputs/outputs, and investigate issues involving context, token usage, latency, or failed tool calls.
• Proven experience as Functional Analyst.
• Requirements engineering, workflows and process modelling skills.
• Digital user experience, web sites and app design, marketing, content design, collaboration platforms, design thinking practices. Knowing Figma is a plus.
• Experience working in Agile environments. Knowing Agile project management platform such as Target process is a plus.
• Demonstrate excellent collaboration, communication, and documentation skills.
• Proven track in stimulating user adoption, onboarding and supporting users.
• Ability to quickly understand business challenges and translate them into actionable solutions.

After your application, we will verify your profile and get back to you within 3

If you’re successful, you can expect the following steps:

An initial conversation with our recruiter - Swati Kumari

Interview with the Hiring Manager and the team.

About Proximus

We are Team Possible turning tech into opportunities.

We are driven by four core pillars: "I care," "I make a difference," "I radically simplify," and "I embrace the future". This means you'll join a team that genuinely cares for customers and colleagues, is empowered to make a real impact, strives to radically simplify complex challenges, and is always looking ahead to embrace the future of technology. We believe in an inclusive and safe environment where everyone can thrive, offering extensive career development resources, including access to over 5,000 training modules and a minimum of 5 days of training per year, to help you continuously learn, grow, and tackle bold challenges with us.

• access to over 5,000 training modules
• a minimum of 5 days of training per year