Python Backend Engineer

Wiser Technology is a leading software development company. Our team of 500+ engineers across Europe excels in web and mobile software development, video streaming, defense, machine learning, automotive, e-commerce, and AI. We leverage top-tier technologies and expertise driven by a passion for innovation to drive progress.

We are looking for an experienced Backend Python Engineer to join our team dedicated to building and scaling high-profile, next-generation AI platforms aimed at executive and strategic clients. We focus on delivering highly secure and customizable solutions, driving the transition of complex minimum viable products into robust, production-grade enterprise systems. In this role, you will be responsible for developing features that focus on the backend logic required for AI-driven conversational flows and complex workflows. You will utilize your strong proficiency in Python and experience with modern Python web frameworks (preferably FastAPI) to design and maintain efficient RESTful APIs. A key area of specialization will be implementing core services for AI agents, including advanced concepts like Retrieval-Augmented Generation (RAG) pipelines, and integrating cutting-edge AI technologies, such as LLMs and agentic frameworks. Success requires solid experience with relational databases (e.g., PostgreSQL or MySQL) and familiarity with containerization using Docker. Knowledge of cloud platforms (like Azure) and Kubernetes is considered a major asset.

WHAT YOU WILL DO:

• Develop features from a proposal to a polished result, focusing on the backend logic for AI-driven conversational flows
• Implement and maintain the core services for AI agents, complex booking workflows, and Retrieval-Augmented Generation (RAG) pipelines
• Collaborate with product managers, frontend engineers, and AI specialists to define and build the optimal user experience
• Join a team of professionals developing a successful, high-profile product in the entertainment and tourism sector
• Challenge yourself in a high-paced, innovative environment with ambitious deadlines

WHAT YOU WILL NEED:

• 5+ years of professional experience in backend software development
• Strong proficiency in Python and its ecosystem
• Hands-on experience building APIs with a modern Python web framework, preferably FastAPI
• Proficiency in designing and maintaining efficient RESTful APIs
• Solid experience with relational databases (e.g., MySQL, PostgreSQL) and ORMs
• Experience with software testing principles and practices (e.g., unit tests, integration tests) using frameworks like pytest
• Familiarity with containerization using Docker
• Experience with or strong interest in AI technologies, including LLMs, RAG, and agentic frameworks (e.g., Microsoft Autogen, LangChain)
• Knowledge of Kubernetes and cloud platforms (especially Azure) is a major plus
• Experience with Vector Databases is a plus
• Exceptional communication and teamwork skills
• Fluent English

WHAT’S IN IT FOR YOU?

Culture & Development:

• Friendly Environment: We take pride in our culture and love spending time together.
• Team Spirit: Be part of a supportive team that uplifts each other.
• Mentorship and coaching: Our colleagues are experts in their field, and you can expect to have a solid team to rely on.
• Personalized Development Program: We realize that one size doesn’t fit all, so you’ll receive an individual development plan tailored to your career aspirations.

Social Benefits:

• Work Flexibility: Embrace flexible working hours and choose from remote, hybrid, or onsite work models. Multiple Office Locations: In Sofia, Plovdiv, Stara Zagora, and Nis, you can choose where you would like to work.
• A Suite of Perks: Enjoy food vouchers, additional health insurance, and more.
• Community and Connections: Engage in exciting social events and team initiatives.
• Empowerment: At Wiser, every role is instrumental. You will have the power to make a difference!

Ready to advance your career with a tech leader passionately driven by innovation?

Join Wiser – Become Wiser!