At IRIUM we want you to chase your dreams and conquer your goals.Senior Full‐Stack Developer (Python/React) ResponsibilitiesDevelop scalable high‐quality solutions across the full stack, with emphasis on Back‐End development.Build and maintain modern React applications, ensuring reusable components, efficient state management, and optimized performance.Design, implement and evolve APIs using Python and FastAPI, ensuring security, modularity and high performance.Manage relational databases, optimize SQL queries, and maintain schema versioning using Alembic.Create and optimize Apache Airflow DAGs for data‐driven workflows.Work with AWS services to deploy, scale and monitor applications (ECS, S3, RDS, DynamoDB, API Gateway).Apply Infrastructure as Code practices using Terraform or CloudFormation.Contribute to AI‐driven features using LLMs, LangChain, and services such as Amazon Bedrock.Collaborate with cross‐functional teams, participate in Agile ceremonies, and support continuous improvement.Ensure best practices in security, performance, documentation and code quality.QualificationsStrong proficiency in Back‐End development with Python + FastAPI.Solid experience with React (components, hooks, state management, REST & GraphQL APIs, performance).Strong SQL knowledge and experience with relational databases (PostgreSQL/MySQL).Experience with Alembic for schema versioning.Experience building and maintaining workflows with Apache Airflow.Hands‐on experience with AWS (ECS, S3, RDS, DynamoDB, API Gateway, IaC, IAM).Practical experience with LLMs, LangChain, prompt engineering and/or Amazon Bedrock.Good communication, teamwork, organization and proactivity.Experience working in Agile environments (Scrum or Kanban).Fluency in English.Location Lisbon, hybrid.BenefitsInnovative and growing company with opportunities for professional development.Competitive compensation according to experience and performance, with flexible pay and medical insurance as a social benefit.Unlimited access to technological training.At IRIUM we defend a world without stereotypes or limitations and we believe in equality for all, principles that we subscribe to in our Equality Plan and Code of Ethics, guaranteeing equal treatment and opportunities regardless of any personal, physical or social condition.#J-18808-Ljbffr