Senior Software Engineer (Python/AWS)

Senior Software Engineer (Python/AWS)
Barcelona

We are a fast-growing Series A startup building cutting‑edge technology to revolutionize cloud development processes and support highly efficient dev & test feedback loops. We've closed our last $25 million round in Q4 2024, led by Notable Capital, CRV and Heavybit.

At its core, LocalStack provides a high‑fidelity emulator and local cloud development platform. Imagine developing cloud applications and data pipelines entirely on your local machine within a lightweight cloud sandbox, running in Docker!

Mission is to empower developers to rapidly build and test their cloud applications, allowing for a more enjoyable dev experience and saving valuable time and resources.

LocalStack has a large and active open‑source community (57k+ stars on GitHub), with over 100k active users worldwide and 290 M+ downloads to date. Our customers range from SMBs to Global Fortune 500 companies.

We are sustainably growing our globally distributed team across sectors. LocalStack is headquartered in Zurich, with a main engineering office in Vienna and remote team members from the US, France, UK, Canada, Spain, and many more countries.

We are looking for an experienced Senior Software Engineer with a strong background in Python development and expertise in AWS. The candidate will play a significant role in enhancing and expanding LocalStack's AWS core cloud emulator with features, parity improvements, and integrations. While proficiency in Python and AWS is essential, experience with other cloud platforms is also advantageous.

• Contribute to LocalStack's AWS emulator, applying and extending the LocalStack emulator framework to implement and test AWS APIs
• Collaborate in a Core Engineering squad to implement features that meet the needs of developers working with AWS environments
• Develop high‑performance local cloud service emulators while maintaining a strong focus on reliability and developer experience
• Contribute to the evolution of LocalStack's overall architecture and frameworks, and contribute to the Open Source ecosystem
• Help make LocalStack's AWS emulator more robust by contributing to AWS sample applications and parity tests
• Spearhead the development of scalable support processes as the company and user base grows
• Bring customer feedback back to the developer and product team and help shape our product direction
• As our enterprise offering grows, work closely with larger customers that use our product for their entire organization

• 3+ years of professional experience in software engineering, focusing on Python development
• Strong hands‑on experience with modern Python development (type hinting, unit/integration testing with pytest, object‑oriented design, applying Python frameworks)
• Demonstrated expertise in AWS services and cloud technologies, with a good understanding of AWS APIs, SDKs, and infrastructure
• Hands‑on experience with Infrastructure‑as‑Code tools such as Terraform or Pulumi
• Problem‑solving skills and the ability to tackle complex technical challenges in a fast‑paced environment
• Excellent communication and collaboration skills, with the ability to effectively interact with team members
• Open, honest, and compassionate personality, showing empathy and a proactive approach to tasks and challenges

• Experience working with other cloud platforms such as Azure, GCP, or others
• Familiarity with containerization technologies (e. g. , Docker, Kubernetes) and microservices architecture
• Knowledge of DevOps practices and tools for automation, deployment, and monitoring
• Active participation in open‑source communities or contributions to relevant projects
• Experience building developer tools

• Competitive salary
• Opportunities for professional development and training
• Dynamic and collaborative work environment
• Flexible work arrangements

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