Senior Software Engineer (Python, LLM, RAG)

Our mission

Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency.

With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students.

Our headquarters is located in Switzerland, and we also have legal entities in Germany, Bulgaria,Serbia, and Singapore

Please send your resume in English only.

We don’t offer visa sponsorship to Switzerland, Singapore, or Germany.

DUTIES & RESPONSIBILITIES:

• Design, develop, and maintain backend services and APIs, applying microservice architecture patterns (synchronous and asynchronous communication).
• Drive the platform’s architecture, scalability, performance, reliability, and security.
• Participate in code reviews and provide feedback to peers.
• Write robust, maintainable, and well-tested code (pytest).

QUALIFICATION & EXPERIENCE:

• 5+ years of professional backend development experience.
• Strong knowledge of FastAPI (or similar modern frameworks) and asynchronous programming in Python.
• Deep understanding of microservices and communication patterns (sync/async, event-driven).
• Solid knowledge of PostgreSQL (indexes, transactions, locking).
• Experience with RabbitMQ (messaging patterns, delivery guarantees).
• Familiarity with CI/CD pipelines.
• Solid understanding of programming principles (e.g., SOLID, dependency injection, clean architecture).
• Problem-solving skills and autonomy.
• English level B2 or higher.

Nice-to-Have:

• Hands-on experience deploying and running applications in Kubernetes (Helm is a plus).
• Exposure to vector databases (e.g., Qdrant).
• Experience integrating with LLM APIs (OpenAI, Anthropic).
• Familiarity with LangChain / LangGraph and RAG architectures.

What We Offer:

• Competitive salary.
• Comprehensive health insurance.
• Choice of equipment ( i.e. laptop, monitor, etc).
• Flexible working schedule.
• International company with large-scale projects and global clients.
• Community of passionate experts to exchange knowledge and expertise with.
• Opportunity to contribute to the better future of education together with a friendly and open-minded team.

Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.