Software Engineer – AWS

This is a fully remote position, open to applicants in Spain, +3 more countries.

📋 Description

• Enhance and fortify LocalStack’s AWS emulator.

• Assume responsibility for individual AWS services, ensuring they function as closely as possible to genuine AWS.

• Transition AWS services from moto-based to fully first-party implementations independently.

• Manage the design of the persistence store, ensuring comprehensive API operation coverage and adherence to LocalStack conventions.

• Address parity discrepancies using snapshot tests against actual AWS.

• Serve as the primary responder for owned services and evaluate customer-reported parity issues.

• Resolve parity bugs within a median of 5 days, including those identified through Terraform and CDK.

• Contribute to reusable testing infrastructure, including conformance harnesses, snapshot tools, and fixtures.

• Independently plan and execute an internalization process from API documentation analysis to shipped provider by month 12.

• Utilize modern AI coding and agentic tools while upholding software quality and reliability.

⛳️ Requirements

• Over 3 years of professional software engineering experience.

• Strong foundation in engineering principles.

• Experience working from written specifications against systems that are not visible internally, such as public APIs, protocols, wire formats, parsers, compilers, SDKs, emulators, or reverse engineering projects.

• A solid testing mindset.

• Practical experience with AI coding and agentic development tools, significantly used to build and deliver real software.

• Quick learner with excellent problem-solving abilities.

• Experience contributing to open-source projects, particularly with sustained involvement in an existing initiative (strong advantage).

• Familiarity with AWS at either the application or platform level (strong advantage).

• Experience with distributed systems, storage, or protocol conformance (strong advantage).

• In-depth AWS knowledge (nice to have).

• Familiarity with Infrastructure as Code tools such as Terraform, CDK, or Pulumi (nice to have).

• Experience with Kubernetes and microservices architecture (nice to have).

• A brief motivation explaining why you are the ideal candidate.

🏝️ Benefits

• Fully remote position.

• Competitive salary.

• Annual company retreat.

• Two additional company-wide holidays.

• Friendly and inclusive workplace culture, featuring community guilds and online company events.

• Yearly bonus.