Backend Developer

pbJoining KEYES means giving purpose to your talent. /b /p pAre you looking for an environment where technology is not an end in itself, but a lever to build a sustainable future? At bKEYES /b, we are not just looking for technical expertise; we are looking for people who share our values. /p pDo you want to continue your career and grow within one of Belgium’s leading IT companies? /p pJoin bKEYES /b as a Backend Developer /p pWe support large enterprises, the public sector, healthcare organizations, and SMEs in all their digital challengesb: Infrastructure Cloud Solutions, Cybersecurity Solutions, Business Software Solutions, Mainframe Solutions, Data AI Solutions, Advisory Solutions, and Staffing Solutions. /b /p h3THE BACKGROUND /h3 pFor our client, an EU Institution based in Brussels, we are looking for a Backend Software Engineer (Python/ Django) to join a long-term mission within an international team delivering modern digital services and business-critical applications. /p pYou will contribute to the development, maintenance, and enhancement of backend services and APIs, ensuring secure, scalable, and high-performing applications that support key business processes. /p pbPlease note /b: candidates must be located within (2) two hours of Brussels, as regular onsite presence is required throughout the assignment. /p h3YOUR MISSION /h3 pAs a Backend Developer, your responsibilities will be as follows: /p ul lipDevelopment of back-end website applications using Python and Django. /p /li lipIntegration of user-facing elements developed by front-end developers with server-side logic. /p /li lipImplement core business logic using Python 3.11 and Django. /p /li lipDesign and implementation of data storage solutions using relational databases and SQL. /p /li lipApply data and security best practices: input validation, authentication/authorization, secure storage, compliant logging and monitoring. /p /li lipOptimization of applications for maximum speed, scalability, and reliability. /p /li lipDesign and develop APIs and backend services. /p /li lipParticipating in the design and creation of scalable software architectures. /p /li lipMaintenance of code integrity and organisation. /p /li lipWriting clean, functional, and maintainable code on the back-end. /p /li lipCompile and analyse data, processes, and code to troubleshoot problems and identify areas for improvement, including setting up and querying monitoring tools. /p /li lipPerform unit and integration testing, debug, fix, and validate code changes. /p /li lipDeliver solutions that fulfil functional and non-functional requirements and align with user expectations. /p /li lipWrite technical documentation. /p /li lipBasic configuration of containerised environments and cloud-based services supporting back-end functionality. /p /li lipDevelop and maintain services and business logic using Python, Django ORM, and asynchronous task-processing frameworks. /p /li lipImplement authentication and authorization mechanisms to secure APIs and services. /p /li lipWrite and maintain unit and integration tests to ensure code quality and reliability, integrating them into CI/CD pipelines. /p /li lip#LI
- MS1 /p p#TRASYS /p /li /ul h3YOUR PROFILE /h3 ul lipBachelor's degree with at least b7 years of relevant professional experience /b, OR /p /li lipMaster's degree with at least b5 years of relevant professional experience /b /p /li lipAbility to understand, speak, and write English (minimum B2 level) /p /li /ul h3Technical knowledge REQUIRED /h3 ul lipStrong experience with bPython 3.11 /b development. /p /li lipProven experience with bDjango 4.2+ /b and the bDjango ORM /b. /p /li lipSolid experience designing, developing, and maintaining REST APIs and backend services. /p /li lipGood knowledge of bSQL /b and relational database design. /p /li /ul h3Technical knowledge PREFERRED /h3 ul lipExperience with asynchronous task-processing frameworks such as bCelery /b, bRabbitMQ /b, bFaktory /b, or equivalent technologies. /p /li lipExperience with containerization technologies and modern deployment environments. /p /li lipKnowledge of code quality, linting, testing, and CI/CD practices. /p /li lipUnderstanding of authentication, authorization, and application security best practices. /p /li lipExperience troubleshooting complex backend applications and performance issues. /p /li lipStrong documentation and collaboration skills. /p /li /ul h3Soft skills /h3 ul lipTalent for attention to detail in code correctness, error handling, and documentation. /p /li lipAbility to analyse complex back-end issues and design effective solutions. /p /li lipCapability of integration in an international and multicultural environment. /p /li lipAbility to participate in multilingual meetings. /p /li lipExcellent interpersonal and communication skills. /p /li lipAbility to work in a team as well as autonomously. /p /li lipResults-oriented mindset, focused on delivering high‑quality solut