Senior Python Backend Engineer — Data & Cloud

King; Stockholms kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

We are seeking a Python-focused backend developer to design, build, and operate backend services and data-driven platforms at King. You will work on systems handling large data volumes, forecasting workloads, and reliable APIs used by multiple teams across the company.

You will collaborate with software engineers, data scientists, analysts, and product managers to deliver scalable solutions and end-to-end workflows, with an emphasis on integration across King and Microsoft ecosystems.

Qualifications

• Strong Python development experience in production environments.
• Experience building backend services and APIs.
• Understanding of modern web application development and the ability to contribute across the stack when needed.
• Solid understanding of asynchronous programming, concurrency, and distributed systems.
• Experience designing and optimizing relational databases.
• Experience building data-intensive applications and processing large datasets.
• Experience with background processing, job orchestration, or distributed workloads.
• Experience deploying and operating applications in containerized and cloud-native environments.
• Familiarity with CI/CD practices and automation pipelines.
• Strong testing, debugging, and problem-solving skills.
• Strong communication and collaboration skills.
• Ability to work effectively in cross-functional teams.
• High sense of code quality and the desire to build and maintain robust, reliable software.
• Curiosity and adaptability when learning new technologies and domains.

Responsibilities

• Design, develop, and maintain backend services and APIs using Python
• Build scalable and reliable applications that support forecasting, analytics, and decision‑making processes across the business
• Develop distributed processing pipelines and asynchronous workloads
• Design and optimize relational OLTP databases, data models, and query performance
• Build and maintain data processing, analytical, and forecasting workflows
• Design, develop, and maintain internal web applications when required
• Build intuitive interfaces and workflows that enable technical and non-technical users to interact with backend systems and business tools
• Integrate services with the King and Microsoft ecosystems, including identity, collaboration, communication, and productivity platforms
• Develop and maintain APIs and connectors that enable interoperability between internal and external systems
• Deploy, monitor, and operate containerized applications in cloud-native environments
• Contribute to technical designs, architectural discussions, and engineering best practices
• Improve system reliability, observability, performance, and operational excellence
• Deliver high-quality, well‑tested, maintainable code
• Participate in code reviews and knowledge‑sharing initiatives across teams
• Support CI/CD pipelines and automation practices throughout the software development lifecycle

Skills

Python development

Backend APIs

Async programming

Distributed systems

Relational databases

Data processing

CI/CD

Testing & debugging

Communication

Team collaboration

Curiosity

Tools

Python

FastAPI

Django

HTMX

TypeScript

PostgreSQL

Pandas

NumPy

SciPy

Celery

Docker

Kubernetes

Drone CI

Job description

We are seeking a Python-focused backend developer to design, build, and operate backend services and data-driven platforms at King. You will work on systems handling large data volumes, forecasting workloads, and reliable APIs used by multiple teams across the company.

You will collaborate with software engineers, data scientists, analysts, and product managers to deliver scalable solutions and end-to-end workflows, with an emphasis on integration across King and Microsoft ecosystems.