Tobias Johannesson
SDE @ AWS
- Role
- Software Development Engineer at Amazon Web Services (AWS)
- Location
- Boston, MA, US
- LinkedIn followers
- 500 followers
About Tobias Johannesson
Backend Software Engineer specializing in distributed systems, cloud infrastructure, and…
Experience
Software Development Engineer
Nov 2024 — Present · Dublin, IE
Ranked top 3 in code contributions (PRs submitted, reviewed, merged) during my first 6 months in a team of 14 engineers, demonstrating high velocity and rapid ramp-up across multiple critical services. Led latency reduction initiatives for internal workflows, cutting customer downtime by over 80%(from ~35s to ~5s), improving availability for mission-critical database operations. Resolved numerous high-severity bugs affecting customer-facing flows, reducing on-call burden and boosting overall service reliability. Enhanced system tests to clean up orphaned large cloud resources (e.g, 24xlarge instances across multiple regions), contributing to estimated monthly savings of $400K+. Solely owned and delivered a compliance-focused project to clean up sensitive customer metadata on account deletion, ensuring adherence to strict global data privacy standards. Hackathon Winner: Co-led a cross-team collaboration during the RDS Aurora & Open Source Hackathon, delivering an AI-based tool to enhance operational efficiency, awarded 1st place across multiple orgs.
Education
KTH Royal Institute of Technology
Master's degree, Computer Science
Värmdö Gymnasium
High School Diploma, Information Technology
2015 — 2018
KTH Royal Institute of Technology
Bachelor's degree, Information and Communication Technology
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