Software Lead Developer (Python, LangChain, Docker)

Highly skilled and experienced LSoftware Lead Developer (Python, LangChain, Docker) 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. Core CompetenciesLeadership & CollaborationLeads 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 DesignDesigns modular, testable, and scalable backend systems. Experienced in event‑driven architecture, microservices, and API‑first design. Quality & ReliabilityStrong advocate of automated testing, observability, and CI/CD best practices. Brings a quality-first mindset to code reviews and team processes. Technical SkillsPrimary Technologies (Expert Level)Python – advanced software design, async programming, performance optimizationLangChain / LangGraph – building LLM-powered applications, agentic workflows, vector integrationsDocker – containerization, multi‑stage builds, optimized production imagesEntra ID (Azure AD) – authentication/authorization flows, OAuth2, OpenID ConnectGitLab – branching strategies, merging workflows, pipelinesLangSmith – LLM monitoring, evaluation, tracingFastAPI – designing high‑performance REST services and backend APIsPytest – unit/integration testing, fixtures, mocksPostgres – schema design, query optimization, migrationsAzureite – Azure Storage emulation for local developmentPoetry – dependency & environment managementPydantic – data validation, settings management, typed modelsOpenTelemetry – distributed tracing, metrics, loggingNice to Have (Working Knowledge)Neo4j – graph databases, Cypher queriesCI/CD Pipelines – design, automation, release workflowsProfessional TraitsProactive, 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. 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 Poland Sp. z o.o. The procedure is available at the following links: Internal-reporting-procedure.pdf, Procedura-zgłoszeń-wewnętrznych.pdf