Medior Software Developer

BelgiumBelgium·Brusselsmid
Software EngineerSoftware Engineering
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Quick Summary

Key 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,

Requirements Summary

Dutch or FrenchLevel Native or bilingual proficiencyEnglishLevel Full professional proficiency

Technical Tools
Software EngineerSoftware Engineering

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

~1 min read

  • →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.


  • 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.


  • 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

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.


  • Agile - Level: Beginner - Most recent: Any time
  • Azure - Level: Beginner - Most recent: Any time
  • DevOps CI/CD - Level: Intermediate - Most recent: 1 to 3 years ago
  • GIT - Level: Intermediate - Most recent: This year
  • Java - Level: Intermediate - Most recent: 1 to 3 years ago
  • Pyhton - Level: Intermediate - Most recent: 1 to 3 years ago
  • Rest API - Level: Intermediate - Most recent: 1 to 3 years ago

Requirements

~1 min read

Dutch or French
Level Native or bilingual proficiency
English
Level Full professional proficiency

Location & Eligibility

Where is the job
Brussels, Belgium
On-site at the office
Who can apply
BE

Listing Details

First seen
October 13, 2026
Last seen
October 13, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
56%
Scored at
October 13, 2026

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Medior Software Developer