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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Engineer - Scoring & Computation Engine - **Company:** Statista GmbH - **Location:** Hamburg, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Airflow, Amazon Web Services, Business Logic, Cloud Computing, Profiling, Code Review, Directed Acyclic Graph (Directed Graphs), Data Structures, Data Warehousing, Python (Programming Language), Software Engineering, Management of Software Versions, Web Application Frameworks, Workflow Management Systems, Backend, Fastapi, Build Management, Information Technology, Data Lineage, Microservices - **Published:** August 6, 2026 - **Apply:** https://de.indeed.com/viewjob?jk=2ded56b405ffe058 ## About the Role Core Requirements (Must-Haves) * Graph Algorithms & Engine Concepts: Deep expertise in modeling and evaluating expression trees and dependency graphs (e.g., ASTs, DAGs, cycle detection, topological sorting, memoization, and selective recomputation). * Advanced Python & Typing Discipline: Mastery of modern Python with strict typing (mypy/pyright), explicit testing discipline, and clean packaging practices. * Deterministic System Design: Proven experience building auditable, reproducible systems using immutable execution records, versioned schemas, and explicit data lineage tracking. * Declarative Logic & Domain Modeling: Experience treating business logic as versioned data (e.g., typed schemas, expression trees, rules engines, or domain-specific configurations). * Typed API & Schema Design: Demonstrated ability to design, version, and operate production backend contracts and schemas for upstream workflow engines and downstream applications. Nice-to-Haves (What Will Make You Stand Out) * Web Frameworks & Orchestration: Production experience with FastAPI (or similar async frameworks) and workflow tools (e.g., Dagster, Prefect, or Airflow). * Performance Profiling: Practical experience analyzing execution memory footprints, CPU profiles, or query efficiency against columnar data warehouses. * Cloud Infrastructure: Familiarity with deploying, monitoring, and operating containerized calculation microservices on AWS., * Degree: Bachelor's or Master's in Computer Science, Software Engineering, Applied Mathematics, or a related quantitative field. * Experience: 5+ years in backend software engineering building computation engines, rules platforms, or complex data-intensive backend systems; including a sustained period within one organization seeing a core system through build launch iteration. * Domain Knowledge: Healthcare or benchmarking domain experience is a plus (basic understanding of healthcare KPIs, quality metrics, or benchmarking concepts; familiarity with hospital rating systems, medical classification, or complex scoring methodologies is especially valuable). * Mindset: Strong analytical and mathematical mindset, with a proven ability to translate complex domain logic and formulas into clean, deterministic software abstractions. * Languages: Fluent in English, German is a plus. * Working Style: Highly structured, detail-oriented, and motivated to collaborate closely with methodology experts, analysts, and cross-functional engineers in an international environment. ## Description You will build the core engine that powers our rankings and benchmarks for hospitals worldwide: a versioned, fully reproducible computation layer that transforms harmonized metrics into comparable scores., * Engine Architecture: Design and build the core scoring engine-a typed, versioned computation graph (DAG) executed deterministically with clear boundary contracts. * Methodology as Data: Model complex business logic (formula trees, categorical mappings, peer selection, and comparability adjustments) as versioned, declarative data structures. * Determinism & Lineage: Own system lineage, versioning, and execution auditability end-to-end, ensuring any score can be recalculated identically at any future date. * Internal Tools & API Layer: Build clean, typed services and contracts for our internal methodology workbench and downstream consumer applications. * Testing & Quality Discipline: Establish rigorous testing practices (e.g., golden file testing, property-based testing, regression validation) to prevent calculation drift. * Technical Ownership: Shape architecture, drive trade-offs between execution speed and cost, set code review standards, and mentor joining engineers. ## Related Videos - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Intro to FastAPI](https://www.wearedevelopers.com/videos/462-intro-to-fastapi) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Data Science on Software Data](https://www.wearedevelopers.com/videos/162-data-science-on-software-data) - [AI Model Management Life Circles: ML Ops For Generative AI Models From Research to Deployment](https://www.wearedevelopers.com/videos/1152-ai-model-management-life-circles-ml-ops-for-generative-ai-models-from-research-to-deployment) ## Related Articles - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023) - [Software Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/194-software-developer-salary-in-germany-2023) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)