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Software Development Engineer (open-source)

Amazon
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Hybrid (Dublin)Posted yesterday

About the role

AWS Lambda open-source focused SDE in Dublin, working on Lambda Runtimes across multiple languages, contributing to implementation, documentation, security updates, and upstream open-source communities to ensure Lambda’s runtime model is robust, secure, and scalable.

Responsibilities

  • Owns implementation, documentation, security updates, and supporting libraries that define how developers write and run code across multiple languages in Lambda.
  • Collaborate with upstream open-source communities to align Runtimes with evolving language advancements.
  • Balance security patching urgency against potential disruption to customers and runtime operations at scale.
  • Solve complex challenges at scale to deliver a best-in-class serverless customer experience.

Qualifications

  • Experience (non-internship) in professional software development
  • Experience designing or architecting (design patterns, reliability and scaling) of new and existing systems
  • Experience programming with at least one software programming language
  • Bachelor's degree or equivalent
  • Experience in development in the last 3 years, or experience in professional, non-internship software development
  • Experience designing or architecting (design patterns, reliability and scaling) of new and existing systems, or experience debugging, profiling, and implementing best software engineering practices in large-scale systems
  • Experience that includes strong analytical skills, attention to detail, and effective communication abilities, or experience troubleshooting and debugging technical systems and experience managing full application stacks from the OS up through custom applications
  • Track record of meaningful contributions to established open source projects
  • Strong programming skills in at least two of the following: Java, Python, Node.js, Go, Rust

Skills

Required:Professional software development experienceDesign or architecture of systemsProgramming languagesOpen source contributions

Benefits

  • Diversity and inclusive culture
  • Learning and growth through mentorship and trainings
  • Accommodations available during hiring process and for disability
Last updated Oct 25, 2026. Interested? Apply on the company site.

About Amazon

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