Software Lead Developer (Python, LangChain, Docker)
Software Lead Developer (Python, LangChain, Docker)
Job Location: Katowice, Lodz
Location Flexibility: Multiple Locations in Country
Req Id: 6829
Posting Start Date: 4/13/26
Looking for new challenges?
At Fujitsu, we believe work should empower you - not just professionally, but personally. Whether you're solving global challenges or improving your community, you'll have the tools, support, and freedom to make a real impact.
We are Fujitsu - a global leader in Japanese information and communication technology (ICT). We deliver innovative solutions, advanced technology products, and services that empower businesses to thrive and create a sustainable future. With a focus on collaboration and trust, we work hand-in-hand with our customers to transform industries, communities, and the world.
Join us and take your career to the next level as Software Lead Developer (Python, LangChain, Docker). Explore the details, submit your CV, and start shaping your future with Fujitsu!
What's the role about?
Highly skilled and experienced Lead Developer with a strong background in building scalable, secure, and high-performance backend systems. Known for exceptional problem-solving skills, ownership mindset, and a collaborative approach that strengthens team dynamics. Adept at designing modern architecture, mentoring developers, and driving engineering excellence. A true team player who consistently aligns technical decisions with business goals.
Who are we looking for?
Leadership & Collaboration
Leads cross-functional engineering teams with clarity and empathy.
Coaches developers in coding standards, architecture patterns, and best practices.
Facilitates effective communication between technical and non-technical stakeholders.
Software Architecture & System Design
Designs modular, testable, and scalable backend systems.
Experienced in event-driven architecture, microservices, and API-first design.
Quality & Reliability
Strong advocate of automated testing, observability, and CI/CD best practices.
Brings a quality-first mindset to code reviews and team processes.
Technical Skills
Primary Technologies (Expert Level)
Python - advanced software design, async programming, performance optimization
LangChain / LangGraph - building LLM-powered applications, agentic workflows, vector integrations
Docker - containerization, multi-stage builds, optimized production images
Entra ID (Azure AD) - authentication/authorization flows, OAuth2, OpenID Connect
GitLab - branching strategies, merging workflows, pipelines
LangSmith - LLM monitoring, evaluation, tracing
FastAPI - designing high-performance REST services and backend APIs
Pytest - unit/integration testing, fixtures, mocks
Postgres - schema design, query optimization, migrations
Azureite - Azure Storage emulation for local development
Poetry - dependency & environment management
Pydantic - data validation, settings management, typed models
OpenTelemetry - distributed tracing, metrics, logging
Nice to have - while not mandatory, these additional skills will make you stand out:
Neo4j - graph databases, Cypher queries
CI/CD Pipelines - design, automation, release workflows
Professional Traits
Proactive, reliable, and driven by continuous improvement.
Thrives in collaborative environments and champions team success.
Communicates complex technical concepts with clarity and confidence.
Values craftsmanship, clean code, and scalable architecture.
Enjoys mentoring and helping others grow technically.
What can you expect from us?
At Fujitsu, we're committed to supporting our employees in every aspect of their professional and personal lives. Here's what we offer:
Health and well-being
Private medical care.
Group life insurance.
Flexibility at work
Work from modern offices with parking or from home.
Workation.
Perks and benefits
Sport cards.
Growth opportunities
Free e-learning platforms.
Shared costs for professional training and certifications.
Making an impact
Responsible business initiatives.
Why Fujitsu?
We combine innovation with purpose, empowering you to bring your whole self to work. Join us and help shape a future where technology improves lives.
Ready to start your journey?
Click "apply" and take the first step toward a career that's as inspiring as it is rewarding.
Based on Article 24(6) of the Act of 14 June 2024 on the Protection of Whistleblowers (Journal of Laws of 2024, item 928), the employer provides information on the internal reporting procedure in force at Fujitsu Technology Solutions Sp. z o.o. The procedure is available at the following links: Internal-reporting-procedure.pdf, Procedura-zgłoszeń-wewnętrznych.pdf
Relocation Supported: No
Visa Sponsorship Approved: No