Medior Software Developer

Mission Overview

Keystone Solutions is seeking a Medior Software Developer for a consultancy mission at a client site. This role involves contributing to the development and improvement of business applications as part of the client's digital transformation strategy.

Responsibilities

• Design, build and maintain application features, mainly on the backend (APIs, services, data access).
• Work in a cloud environment, preferably Azure: configuration, logging, identity, storage, and basic troubleshooting of the services you use.
• Contribute to CI/CD pipelines, code reviews and automated tests. Do not commit secrets. Respect environments (dev / test / prod).
• Write clear, reviewed code and document what you ship.
• Estimate and refine work with the Solution Architect / Lead Developer. Raise risks early.
• Take part in agile ceremonies and pair when a topic is new.

Profile

• 2 to 5 years of professional software development experience (medior). Internships alone are not sufficient.
• Confirmed in Python or Java: autonomous on day-to-day work in at least one of the two. Both is a plus. We do not expect Expert in either.
• Practical knowledge of a public cloud. Azure is preferred: resource groups, App Service / Functions / containers or equivalent, identity, storage, monitoring at user level.
• Understands standard DevOps practices: Git flow, pull requests, CI/CD, environment promotion, and secret hygiene.
• Ideally holds AZ-900 and/or AZ-204 (Azure Developer). No certification is not a knockout if cloud practice is real and recent.
• Curious, able to work with a lead, not only a ticket-taker.
• English for code, documentation and team conversation. French and/or Dutch is a plus.

Assets

• AZ-900, AZ-204, or another Azure developer / fundamentals certification.
• Docker.
• SQL (PostgreSQL, SQL Server or equivalent).
• Spring, FastAPI, Flask.
• Azure DevOps or GitHub Actions beyond “I ran a pipeline once”.

At Keystone Solutions, we pride ourselves on our consultancy nature, offering dynamic projects that provide turbo-charged learning opportunities. As a

Duration: 03/11/2026 - 03/11/2027 12 months • (full time)

Skills required

• AgileDébutant
• AzureDébutant
• DevOps CI/CDIntermédiaire · pratiqué il y a 1 à 3 ans
• GITIntermédiaire · pratiqué cette année
• JavaIntermédiaire · pratiqué il y a 1 à 3 ans
• PyhtonIntermédiaire · pratiqué il y a 1 à 3 ans
• Rest APIIntermédiaire · pratiqué il y a 1 à 3 ans

Language requirements

• Néerlandais / FrançaisNative or bilingual proficiency
• AnglaisCompétence professionnelle complète