Lead Backend Architect (Python, LangChain, Docker)

Fujitsu; Łódź; On-site; PLN 260,000 - 420,000; Full time

Benefits offered by this job

Relocation Supported

Job summary

Fujitsu Lodz is seeking an experienced LSoftware Lead Developer (Python, LangChain, Docker) to architect scalable backend systems and mentor the engineering team. You will drive performance, security, and reliability while aligning technical decisions with business goals.

Ideal candidates excel in leadership, API-first design, and modern architectures, including event-driven microservices. A collaborative mindset and strong problem-solving skills are essential for delivering high-quality

Qualifications

• Leads cross-functional engineering teams with clarity and empathy.
• Designs modular, testable, and scalable backend systems.
• Advances automated testing, observability and CI/CD practices.

Responsibilities

• Lead architecture and mentoring for backend systems.
• Drive engineering excellence and code quality.
• Collaborate with stakeholders to align technical decisions with business goals.

Skills

Leadership & Collaboration

Software Architecture

Quality & Reliability

Event-driven architecture

Microservices

API-first design

CI/CD

Observability

Performance optimization

Distributed tracing

Tools

Python

LangChain/LangGraph

Docker

Azure AD

GitLab

LangSmith

FastAPI

Pytest

Postgres

Azureite

Poetry

Pydantic

OpenTelemetry

Job description

Fujitsu Lodz is seeking an experienced LSoftware Lead Developer (Python, LangChain, Docker) to architect scalable backend systems and mentor the engineering team. You will drive performance, security, and reliability while aligning technical decisions with business goals.

Ideal candidates excel in leadership, API-first design, and modern architectures, including event-driven microservices. A collaborative mindset and strong problem-solving skills are essential for delivering high-quality