Software Engineer (Backend)

At Bayer we’re visionaries, driven to solve the world’s toughest challenges and striving for a world where ,Health for all, Hunger for none’ is no longer a dream, but a real possibility. We’re doing it with energy, curiosity and sheer dedication, always learning from unique perspectives of those around us, expanding our thinking, growing our capabilities and redefining ‘impossible’. There are so many reasons to join us. If you’re hungry to build a varied and meaningful career in a community of brilliant and diverse minds to make a real difference, there’s only one choice.

Software Engineer (Backend)

At Bayer, we are committed to transparency, equal pay for equal work or work of equal value, and objective reward practices in line with EU and local regulations. The minimum annual gross compensation for this role is 15360 PLN, with final pay determined based on objective factors such as experience, qualifications, scope of responsibility, and internal alignment.

This position is eligible for variable pay components, such as performance‑based bonuses, awarded in accordance with the applicable employee group, role scope, and compensation structure.

In addition, Bayer offers a competitive and holistic benefits package, including:

• Medical care above statutory requirements
• Flexible benefits supporting leisure, and well‑being/sports programs
• Life, accident, and disability insurance through group coverage
• Employer‑supported pension plans with regular company contributions
• Home office allowance to support hybrid or remote work
• Extra Paid Holidays

Benefits may vary depending on country, role, and employment conditions.

For Digital Hub Warsaw, we are looking for:

Software Engineer (Backend)

You’ll build and extend the backend of myGenAssist, an enterprise AI assistant platform. The backend is a FastAPI application that orchestrates LLM interactions, manages agent workflows with LangChain/LangGraph, handles document processing pipelines, and exposes tools via MCP (Model Context Protocol).

Key Tasks & Responsibilities:

• Design and implement async APIs using FastAPI, following our patterns for session management, API versioning, and domain-driven structure.
• Build and evolve AI agent workflows using LangChain and LangGraph — tool integration, state persistence, multi-step reasoning.
• Design and optimize database schemas with SQLModel/SQLAlchemy and PostgreSQL, including migrations and vector search (pgvector, Qdrant).
• Build background job pipelines with RQ (Redis Queue) for document processing, knowledge base indexing, and long-running tasks.
• Implement observability using OpenTelemetry, Langfuse, Prometheus, and Grafana.
• Write tests using pytest with parallel execution, covering unit, integration, and RAG evaluation.
• Enforce code quality through reviews and adherence to security best practices (OWASP).

Qualifications & Competencies (education, skills, experience):

• 3+ years with Python in production backend systems
• Strong FastAPI experience (async/await, dependency injection, middleware)
• SQLAlchemy or SQLModel with PostgreSQL
• Redis for caching and task queues
• Experience integrating LLMs via API (OpenAI SDK or similar)
• Testing with pytest
• Docker for development and deployment
• Understanding of async Python (asyncio, concurrent session management)
• Git and PR-based workflow Nice to Have
• LangChain / LangGraph for agent orchestration
• Vector databases (Qdrant, pgvector) and RAG patterns
• MCP (Model Context Protocol)
• Document processing pipelines (Docling, Unstructured)
• OpenTelemetry and distributed tracing
• Kubernetes basics (we run on EKS)
• AWS services (S3, Secrets Manager)
• OAuth2/JWT authentication
• Agile/Scrum experience

WORK LOCATION: WARSAW AL. JEROZOLIMSKIE 158

YOUR APPLICATION

Bayer welcomes applications from all individuals, regardless of race, national origin, gender, age, physical characteristics, social origin, disability, union membership, religion, family status, pregnancy, sexual orientation, gender identity, gender expression or any unlawful criterion under applicable law. We are committed to treating all applicants fairly and avoiding discrimination.

Bayer is committed to providing access and reasonable accommodations in its application process for individuals with disabilities and encourages applicants with disabilities to request any needed accommodation(s) using the contact information below.

Bayer offers the possibility of working in a hybrid model. We know how important work-life balance is, so our employees can work from home, from the office or combine both work environments. The possibilities of using the hybrid model are each time discussed with the manager.

Bayer respects and applies the Whistleblower Act in Poland.

Location: Poland : Mazowieckie : Warszawa

Division: CH

Reference Code: 851299

Location:

Poland : Mazowieckie : Warszawa

Division:

CH

Reference Code:

851299