Sophie Crennan
Senior Software Engineer at Klaviyo
Boston, Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolSophie Crennan is a Senior Software Engineer based in Boston with seven years of hands-on experience building full-stack and backend systems, currently driving product work at Klaviyo. She combines a strong academic foundation from Northeastern University with practical co-op experience at WHOOP and the Broad Institute, where she improved developer tooling, cloud genomics pipelines, and internal ops automation. At Northeastern’s Sandbox she led a 60+ student consultancy and shipped production apps using TypeScript, React, TypeORM, and PostgreSQL, demonstrating both technical depth and people leadership. Notably, she has a track record of improving developer experience—shipping internal admin tooling, rollback automation, and authentication guard annotations—and enjoys tackling cross-functional problems that sit between infrastructure, product, and research.
7 years of coding experience
5 years of employment as a software developer
Computer Science, Fourth Year, Computer Science, Fourth Year at Northeastern UniversityHighschool, Highschool at Academy of Our Lady of Peace
Github Skills (22)
reproducible-science10
bam10
hts10
fastq10
sequencing10
pipeline10
java-api10
wdl10
fasta10
sequence10
java9
sam9
throughput9
nim-language9
bioconda8
Programming languages (5)
Github contributions (5)
sophiacrennan/cs4550-2020summer1-sophiacrennan-client-react
May 2020 - Jun 2020
Contributions:7 releases, 12 pushes, 1 branch in 21 days
cynthiaxie62/MentalHealthWebsite
Mar 2019 - Feb 2020
Contributions:1 push in 10 months
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