Full-Stack Engineer (m/w/d)

Full-Stack Engineer (m/w/d)In Germany - Berlin | Bonn | Cologne | Frankfurt/Main | Hamburg | MunichWe are seeking an AI Full-Stack Engineer to contribute to designing and building scalable SaaS products within our AI Lab. In this role, you’ll combine deep technical expertise with strategic vision to build AI-powered products that will help transform our clients’ business models and enable their growth. Simon-Kucher is at the forefront of innovation in driving commercial excellence, revamping business models, developing solutions and methodologies for unlocking better growth of our clients. Within Elevate Lab, we are developing cutting-edge large scale AI products to deliver sustained top-line impact for our clients. Are you interested in working in a team of AI evangelists with a can-do attitude? Want to experience the dynamics of agile processes in open-minded teams? How about getting creative in a startup atmosphere with a steep development curve and flat hierarchies? And most importantly, do you want to make a difference? Then you've come to the right place. What makes us special:Advance your career with exciting professional opportunities in our thriving company with a startup feelInnovate by transforming ideas into cutting-edge AI products, championing AI and Generative AI through creative experimentation to push boundaries and deliver transformative solutions. Voice your unique ideas in a culture defined by our entrepreneurial spirit, openness, and integrityFeel at home working with our helpful, enthusiastic colleagues who have great team spiritBroaden your perspective with our extensive training curriculum and learning programs (e.g. LinkedIn Learning)Speak your mind in our holistic feedback and development processes (e.g. 360-degree feedback)Satisfy your need for adventure with our opportunities to live and work abroad in one of our many international officesEnjoy our benefits, such as hybrid working, daycare allowance, corporate discounts, and wellbeing support (e.g. Headspace)Unwind in our break areas where you can help yourself to the healthy snacks and beverages providedSee another side of your coworkers at our frequent employee events, World Meetings and Holiday PartiesHow you will create an impact:Ship secure and accessible UIs and services that turn data/ML/GenAI into delightful, explainable featuresBuild and launch multi‑tenant app modules (UI + services) with role‑based access and audit loggingImplement RAG‑powered features with high UX trust signals (citations, source previews, evaluations in‑product)Establish a UI design system and component library for reuse across productsDesign and build TypeScript/React (or equivalent) front ends and service layers (Node/NestJS or Python/FastAPI)Implement authN/authZ (OIDC), tenancy boundaries, rate limiting, and usage meteringIntegrate ML/LLM endpoints via a gateway; instrument for latency, errors, and cost; implement fallbacksOwn end‑to‑end testing (contract, e2e, accessibility), CI/CD, and release automationCollaborate with Product team on discovery and with UX Designer on IA/UXWrite technical documentationWork with Cloud Platform Engineer to deploy and manage services securelyAbout you:3+ years shipping production web apps; strong TypeScript; React/Next.js; REST/GraphQL; Node or Python services. Secure multi‑tenant patterns; API design; async messaging; caching; performance profiling. Integrating ML/LLM services (streaming, tool use, evals, guardrails)Python (advanced); FastAPI (async/await, DI, middleware), Pydantic (validation/serialization/API contracts)SQLAlchemy (ORM, performance), Alembic (migrations); Pytest (unit/integration)React (advanced), TypeScript (expert), TanStack Query, React Router, React Hook FormData viz: Recharts/Chart.js (expert) and D3 (for custom charts)State & composition patterns: Redux Toolkit or similar; atomic/compound componentsDomain-Driven Design (bounded contexts, domain services)Clean Architecture, dependency injection; Repository patternPostgreSQL/MySQL (schema design, normalization, indexing, query tuning, connection pooling)dbt for SQL transformations and tests (nice if role touches analytics features)Open table formats exposure (Iceberg/Delta/Hudi) a plus for lakehouse interoperabilityVector DatabasesKafka/MSK/Kinesis (producers/consumers, partitions, at-least-once; exactly-once/idempotency patterns a plus)Great Expectations/Deequ for data validation, checkpoints, docsPII handling, encryption in transit/at rest, least-privilege access; row/column-level policies (nice to have)Docker, CI/CD, Git (branching, reviews); observability basics (logs/metrics/traces)Database change management: Alembic; familiarity with Liquibase/Flyway a plus (schema versioning, safe rollbacks) Have we sparked your interest? Simply click the 'Apply now' button to submit your application. Please note that, for data protection reasons, we cannot accept applications via email.  Would you like to learn more about us and our company culture?  Click here to watch our recruitment video.  About Simon-Kucher  Simon-Kucher is a global consultancy with more than 2,200 employees in 30+ countries. As a trusted commercial advisor focused on unlocking better growth, we combine deep consulting expertise, growth specialization, and technology to scale lasting impact. We optimize every lever of commercial strategy

product, pricing, innovation, marketing, and sales – based on what customers want and value. With over 40 years of monetization experience, we are recognized as the world’s leading commercial growth and pricing specialist. simon-kucher.com

We believe in building a culture that embraces diversity, equity, and inclusion, creating an environment in which our people feel valued, are able to be themselves and feel their contribution matters. If we get that right, remarkable things will happen; people will grow faster, innovate, feel valued, and create better outcomes for everyone – our people, our clients and, of course, our business. Your personal contact:Charlotte Severrecruitment.germany(at)simon-kucher.comBetter growth starts here. With you.

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