Senior Full-Stack Engineer

• Enjoy 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 provided
• See another side of your coworkers at our frequent employee events, World Meetings and Holiday Parties

How you will create an impact:

• Ship secure and accessible UIs and services that turn data/ML/GenAI into delightful, explainable features.
• Build and launch multi-tenant app modules (UI + services) with role-based access and audit logging.
• Implement 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 products.
• Design 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 metering.
• Integrate ML/LLM endpoints via a gateway; instrument for latency, errors, and cost; implement fallbacks.
• Own end-to-end testing (contract, e2e, accessibility), CI/CD, and release automation.
• Collaborate with Product team on technical discovery and feasibility and with UX Designer on IA/UX.
• Write technical documentation.
• Work with Cloud Platform Engineer to deploy and manage services securely., * Domain-Driven Design, Clean Architecture, dependency injection, and repository patterns.
• PostgreSQL/MySQL: schema design, indexing, query tuning, and connection pooling.
• Kafka/MSK/Kinesis: producers/consumers, partitions, and at-least-once semantics (idempotency a plus).
• Pandas for pragmatic data manipulation in services and jobs.

Security, Quality & Governance

• AuthN/AuthZ (OAuth2/JWT), RBAC, and secure secrets handling.
• Data validation and governance (Great Expectations/Deequ); PII handling and encryption (nice to have).

Delivery & Operations

• Docker, CI/CD, Git workflows; observability basics (logs, metrics, traces).
• Database change management (Alembic; Liquibase/Flyway a plus)., Our sole focus is on unlocking better growth that drives measurable revenue and profit for our clients. We achieve this by optimizing every lever of their commercial strategy - product, price, innovation, marketing, and sales - based on deep insights into what customers want and value. With 40 years of experience in monetization topics of all kinds, we are regarded as the world's leading pricing and growth 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.

Do you have experience in Unit testing?, Do you have a Master's degree?, * 7+ years shipping production web apps; strong TypeScript; React/Next.js; REST/GraphQL; Node or Python services.

• Deep experience designing and operating secure multi-tenant systems; API design; async messaging; caching; and performance profiling.
• Experience integrating ML/LLM services (streaming, tool use, evals, guardrails) and building RAG features with ingestion pipelines, embeddings, vector stores, and retrieval orchestration.
• Python (advanced); FastAPI (async/await, dependency injection, middleware); Pydantic (validation, serialization, API contracts).
• Data layer expertise: SQLAlchemy (ORM internals, performance tuning); Alembic (migrations); Pytest (unit and integration testing).
• React (advanced), TypeScript (expert), TanStack Query, React Router, React Hook Form.
• Data visualization: Recharts/Chart.js (expert) and D3 (for custom charts).
• State and composition patterns: Redux Toolkit or similar; atomic and compound components.