Senior Python Back-End Developer
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About Us: GBT Solutions is a Portuguese technology company founded in 2018, part of the HFA Group established in 1995. With a focus on delivering cutting-edge solutions across various industries, we are committed to fostering a diverse and inclusive work environment and are proud to be recognized for our commitment to excellence and innovation.Position: Senior Python Back-End DeveloperLocation: Remote | EuropeMay–Oct 2026 | ~80 working daysWe are looking for a Senior Python Back-End Developer to support the CMRE Data Management Programme. The role focuses on building scalable backend systems and APIs for core data capabilities, working in an Agile team and collaborating closely with a Software Architect.ResponsibilitiesDevelop and maintain backend services and APIs in PythonImplement scalable, secure, production-grade solutionsBuild data catalogues, models, and workflowsEnsure performance, reliability, and securityOwn features end-to-end and contribute to architectureWrite tests (unit, integration, TDD) and perform code reviewsSupport CI/CD pipelines and documentationCollaborate with DevOps, QA, frontend, and architectsMandatory Requirements7+ years of backend development experienceAdvanced Python (async, type hints, packaging)FastAPI and async best practicesStrong OOP, design patterns, REST API designSQL (PostgreSQL/SQL Server) + NoSQL (MongoDB/Redis/Elasticsearch)SQLAlchemy or Django ORMDocker, basic Kubernetes, LinuxTesting (pytest, TDD), CI/CD (GitHub/GitLab/Azure DevOps)Secure coding, OAuth2/JWT, API securityMicroservices, distributed systems, Agile experienceStrong communication in EnglishNice to HaveMetadata standards (Dublin Core, ISO 19115, STANAG 2586)Semantic Web (RDF, DCAT, Jena)Azure (Entra ID, DevOps, Key Vault)Observability (Prometheus, Grafana, OpenTelemetry)LLM frameworks (LangChain, LlamaIndex), RAG pipelinesEqual Opportunity: GBT Solutions is an equal opportunity employer and values diversity. We do not discriminate based on age, ethnicity, sexual orientation, gender, disability, or any other factor other than merit.