
Senior Full Stack Developer
Germany
Apply by 2 Dec 2025
DE90000.0
Job Ref.: 55525
Job Description
Senior Full Stack Engineer
My client is seeking a highly motivated Senior Full Stack Engineer with an entrepreneurial mindset. This role is pivotal in shaping their technology landscape, ensuring scalability, reliability, and innovation across backend, frontend, and infrastructure.
The position combines hands-on software engineering with leadership responsibilities, spanning modern frameworks, databases, DevOps, and AI-driven systems.
Key Responsibilities
Full Stack Development
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Design, build, and maintain backend services using TypeScript (Hono, Node.js, Nest.js) and Python (FastAPI).
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Develop and enhance frontend applications with Next.js, React, and web components, focusing on performance and UX.
Software Engineering Excellence
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Apply SOLID principles, design patterns, and clean code practices.
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Conduct code reviews and mentor junior engineers to ensure high-quality standards.
DevOps & Infrastructure
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Manage and optimize Kubernetes-based infrastructure (including Docker runtimes, scaling, and monitoring).
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Implement CI/CD pipelines, IaC with Terraform, and oversee deployments on AWS.
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Work with ArgoCD and ensure reliability of production environments.
Database & Data Systems
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Work with a range of databases:
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SQL (PostgreSQL, SQLite)
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NoSQL (MongoDB)
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Graph databases (Dgraph)
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Ensure integrity, performance, and seamless integration across multi-database systems.
API Development
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Build and maintain REST APIs and GraphQL endpoints.
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Focus on secure, efficient integrations and advanced querying through knowledge graph approaches.
AI & Knowledge Graph Integration
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Collaborate on deploying LLM-powered features such as vector search and graph-based retrieval.
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Contribute to semantic querying and intelligent data integration.
Required Skills & Experience
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5–8 years of experience in full stack development, with senior-level expertise.
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Strong proficiency in TypeScript across backend and frontend.
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Backend experience with Hono, Node.js, Nest.js, Python (FastAPI).
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Frontend expertise with Next.js, React, and web components.
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Deep understanding of software design principles (SOLID, DRY, KISS), architecture, and testing practices.
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Proficiency in working with SQL, NoSQL, and graph databases.
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Strong knowledge of API design (REST & GraphQL).
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Expertise in Kubernetes, AWS, Terraform, ArgoCD, and CI/CD workflows.
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Familiarity with AI/ML integrations, LLMs, embeddings, and semantic data modeling.