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One Source Consulting - Python Developer

Location: Brussels

Duration: 1-2 Year Long term contract

Languages: English (Any other local language French/Dutch is an asset)

Experience: 3-4 Years



Job Description

  • To increase its competitiveness and pursue its development in the best conditions, GEM IS significantly invests in its information system.

  • The DC CEM supports the industrialisation of the costing processes for customers and the management of the exposures related to confirmed sales positions for both gas and power. Highly performing forecasting is part of the key processes in this respect.


Purpose of the service

  • The service shall be carried out within the DC CEM responsible for delivery and maintenance of the tools geared towards the LSS departments of Brussels, but extendable to all European countries.

  • It consists in reinforcing the DC CEM team. The objective of the mission is to industrialize and secure business processes by designing and delivering IT solutions (Web API oriented) within the context of CEM IT applications landscape.


Services expected from the Service Provider

  • The activities presented above correspond to the expectations of GEM-IS. It is up to the Service Provider to complete and specify the content of each if necessary, or even add other activities.

  • The Service Provider is expected to put forward a profile with the skills requested in line with the requested activities. After analysing the activities, the Service Provider may propose complementary skills.

  • All of the deliverables shall be drawn up according to the presentation models and standards in force at GEM-IS.

  • The deliverables shall be handed over during performance of the service including in intermediary versions. They shall be sent in electronic form by the company's messaging service.




The main activities are

  • Take into account functional specifications

  • Design the technical solution

  • Workload estimate

  • Development and unit Test

  • Document (Technical Specification / Swagger)

  • Report the progress of your tasks on a weekly basis

  • Ensure deliveries and respect deadlines

  • Collaborate and share experiences with other teams (other delivery centre ....)



  • Pythonstack
  • Angular
  • JSON
  • XML
  • SOAP
  • Web Services
  • WCF

Company description

One Source is a Belgium based recruitment agency with high-qualified and proven professionals in providing recruitment & Staffing services for qualified, professional and skilled people across Belgium. We operate across the private and public sectors, dealing in permanent positions, contract roles and temporary assignments. Our delivery model includes on-site, off -site, off -shore and hybrid delivery solutions.

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