**JOB DESCRIPTION:** We are an Edtech specialized in language programs, combining artificial intelligence and personalized education to serve the B2B audience at scale. Our methodology drives performance, continuous learning, social inclusion, and talent development within organizations. Now, we are looking for a Mid-level Backend Python Developer (FastAPI \+ Celery) to strengthen our team and contribute to building the future of corporate education. If you identify with who we are and with a culture that values innovation, collaboration, authenticity, and diversity, then this could be your place. Here, our job openings are open to all dimensions of diversity. \#JoinLingopass **KEY RESPONSIBILITIES:** Develop and maintain RESTful APIs using FastAPIImplement and optimize asynchronous tasks with Celery and geventDevelop administrative endpoints using clean architectureIntegrate Firebase services (Admin SDK, Firestore, Storage, Auth)Develop integrations with AI APIs (OpenAI, Replicate, ElevenLabs, Gemini)Manage dual-server architecture (fast API \+ background workers)Ensure code quality with testing, task monitoring (Celery Insights), and best practices **REQUIRED SKILLS AND COMPETENCIES:** Experience in Python developmentExperience working on backend projectsExperience integrating AI and LLMs (OpenAI, Anthropic, Google Gemini)Knowledge of gRPC and compatibility with geventExperience with education applications or content-generation systemsFamiliarity with Firestore and NoSQL data modelingKnowledge of SQL databases (PostgreSQL, MySQL) as well as NoSQLKnowledge of Docker and production deployment (Render, AWS, GCP)Experience with task monitoring (Celery Insights, Flower, Celery Beat) **PREFERRED QUALIFICATIONS:** 3\+ years of production experience with PythonProficiency in FastAPI or similar async frameworks (Starlette, Sanic)Solid experience with Celery and message brokers (Redis, RabbitMQ)Knowledge of async/await and asynchronous programming in PythonExperience with gevent or other concurrency solutions (greenlets, asyncio)Familiarity with Firebase Admin SDK (Firestore, Storage, Authentication)Knowledge of repository architecture and layer separationExperience with Git and collaborative workflows **OUR CORE VALUES:** At Lingopass, five values define our culture and drive our growth: **Innovation:** We believe innovation can revolutionize learning. **Efficiency:** Certified results in record time. **Transparency:** We track metrics to optimize resource allocation. **Diversity:** We celebrate diversity in all its forms. **Connection:** We value human relationships even in a digital environment. **OUR SELECTION PROCESS STEPS:** RegistrationScreeningPhase 1 \- Interview with People TeamPhase 2 \- Interview with the teamOfferOnboarding Join a team that grows, learns, and innovates every day. Come be Lingopass! People \& Culture \- Lingopass **Benefits:** WHAT WE OFFER: , Fully Remote \- Work safely and comfortably from home, ‍ ️ Total pass: access to a wide range of physical activities , Language study scholarships: \+ 100% scholarship for anyone you choose, Training reimbursement, Birthday bonus , Happy Day during your birthday month, Clude: telemedicine with doctors, nutritionists, psychologists, and pharmacy discounts, Partnerships and discounts: postgraduate programs, courses and certifications, In-person meetings once a month in São Paulo \- for connection and exchange (optional for residents of SP) **About the company:** A Brazilian impact EdTech Since 2021, Lingopass has been transforming corporate education in Brazil. Our purpose is to strengthen inclusion and employability by offering innovative solutions that simplify the learning and development process. Focusing on four languages, we provide a complete cultural immersion experience, preparing professionals for the global market. A learning experience that opens doors and transforms lives Our commitment is to deliver an experience that motivates our students, always placing their needs first. We aim to empower and accelerate professional communication, cultural integration, and wellbeing, making language learning more accessible to everyone. Our culture is strongly rooted in collaboration and mutual support Even remotely, we are always ready to share ideas and help each other. This collaborative spirit creates a continuous learning environment where everyone can grow and contribute to the team’s success. We work remotely but hold monthly in-person meetings to strengthen our bonds. We value diversity and open communication, creating a space where we feel comfortable sharing challenges and achievements.