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Full Stack Developer (Python) at proSapient. Every day, somewhere in the world, important decisions are made. Whether it is a private equity company deciding to invest millions into a business or a large corporation implementing a new strategic direction, these decisions impact employees, customers, and other stakeholders. . Consulting and private equity firms come to proSapient when they need to discover knowledge to help them make great decisions and succeed in their goals. It is our mission to support them in their discovery of knowledge. . We help our clients find industry experts who can provide their knowledge via interview or survey: we curate this knowledge in a market-leading software platform; and we help clients surface knowledge they already have through expansive knowledge management.  . We are looking for a skilled . Fullstack Python Engineer. to join our growing engineering team. In this role, you will work across the stack to build and improve our primary research platform. From developing robust Python backend services to crafting intuitive frontend experiences using React and TypeScript, you’ll help shape key user-facing features and drive innovation across our product.. You’ll be part of a collaborative, cross-functional team, contributing to projects with real-world impact and helping us deliver knowledge discovery tools to the world’s top consulting and investment firms.. Key Responsibilities. . Design, develop, test, and maintain scalable backend services using Python (Django/FastAPI).. . Build and enhance responsive user interfaces with React and TypeScript.. . Work closely with design and product teams to deliver end-to-end features across the stack.. . Integrate third-party APIs and services, including LLMs for data extraction and automation.. . Work with PostgreSQL to model and optimize relational data at scale.. . Collaborate with product managers, designers, and other engineers to ship impactful features.. . Ensure code quality through testing, reviews, and adherence to best practices.. . Participate in architectural decisions and system design reviews.. . Support and maintain production systems, contributing to observability and performance tuning.. . . 3+ years of professional experience with Python and a modern web framework (e.g., FastAPI, Django).. . Strong hands-on experience building frontend applications using React and TypeScript.. . Proficiency with Python web frameworks such as FastAPI or Django.. . Solid experience with PostgreSQL, including schema design and performance optimization.. . Familiarity with REST APIs, background job processing.. . Strong problem-solving skills and ability to work independently in a fast-paced environment.. . Comfortable working across the stack and switching between backend and frontend tasks.. . Bonus Skills. . Experience with message brokers (e.g., Kafka, RabbitMQ).. . Familiarity with Elasticsearch.. . Knowledge of cloud infrastructure (preferably AWS), Docker/Kubernetes, and CI/CD pipelines.. . Exposure to observability tools (e.g., Datadog, Prometheus, Grafana).. . Company Location: Portugal.