Back End Software Engineer

Uni Systems

. Develop and maintain back-end web applications, services, and business logic.

Posted 10/23/2026full-timeBrussels • BelgiumSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in back-end development using Python and frameworks such as Spring Boot and Node.js, with a strong focus on API design, database management, and application security. Proficient in implementing cloud-based solutions and optimizing application performance through best practices and monitoring tools.

Highest-signal resume keywords

Back-End Development With PythonAPI Design And DevelopmentRelational Database ManagementApplication Performance MonitoringCloud-Based Services Configuration

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Applicant Tracking System Keywords

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Hard Skills

PythonSpring BootHibernateNode.jsPostgreSQLOracleMySQLDockerKubernetesRESTful APIs

Tools & Technologies

DynatraceSplunkElastic APMOpenTelemetryGitFlowSVNOpenAPISwagger

Certifications & Qualifications

AWS Certified Developer AssociateMicrosoft Azure Developer AssociateCNCF Certified Kubernetes Application Developer (CKAD)

Industry Keywords

Application Performance MonitoringAuthentication And AuthorizationNoSQL DatabasesContainerizationOrchestration Technologies

Tech Stack

Tools & technologies

AWSAzureCloudDockerHibernateJavaScriptKubernetesMongoDBMySQLNode.jsNoSQLOraclePostgresPythonSplunkSpringSpring BootSpringBootSQLSubversion

About the role

Key responsibilities & impact

Develop and maintain back-end web applications, services, and business logic.
Design, develop, and optimize APIs and server-side functionality.
Integrate front-end components with back-end systems and databases.
Design and implement efficient, scalable, and secure data storage solutions.
Apply security best practices, including input validation, authentication, authorization, secure storage, logging, and monitoring.
Ensure application performance, scalability, and reliability through continuous optimization.
Participate in the design and development of scalable software solutions.
Maintain clean, organized, and high-quality code following established coding standards.
Analyze, troubleshoot, and resolve application issues through code review, monitoring, and debugging.
Perform unit and integration testing, validate code changes, and ensure software quality.
Deliver solutions that meet functional and non-functional requirements and user expectations.
Create and maintain technical documentation.
Configure and support cloud-based back-end services, including serverless functions, storage services, and managed Kubernetes environments.
Implement and maintain authentication and authorization mechanisms to secure APIs and services.
Develop and maintain automated unit and integration tests within CI/CD pipelines.

Requirements

What you’ll need

Minimum Master’s degree (EQF Level 7) with at least 5 years of IT experience, a Bachelor’s degree (EQF Level 6) with at least 7 years of IT experience, or a secondary education diploma granting access to higher education with at least 12 years of professional IT experience.
Proficiency in back-end development with Python and experience working with frameworks such as Spring Boot, Hibernate, and Node.js.
Strong understanding of the full web development lifecycle, programming concepts, development tools, and best practices.
Experience with Application Performance Monitoring (APM) tools such as Dynatrace, Splunk, and Elastic APM, with knowledge of OpenTelemetry for metrics, logs, and distributed tracing.
Strong experience with relational databases, including PostgreSQL, Oracle, and MySQL, with the ability to write complex SQL queries and design efficient database structures.
Knowledge of NoSQL databases such as MongoDB, CouchDB, and Cosmos DB, including consistency and performance considerations.
Experience with version control systems and development workflows, including GitFlow, trunk-based development, and exposure to legacy systems using SVN.
Experience designing, developing, documenting, and securing RESTful APIs and web services, including the use of OpenAPI/Swagger.
Knowledge of containerization and orchestration technologies such as Docker and Kubernetes.
Understanding of authentication and authorization standards, including OAuth 2.0, OpenID Connect (OIDC), JWT, and EU Login.
Experience working with and strong understanding of the i2 technology stack.
One of the following or an equivalent certification: AWS Certified Developer Associate, Microsoft Azure Developer Associate, or CNCF Certified Kubernetes Application Developer (CKAD).