Ben Jeffrey
Senior Software Engineer at Sainsbury's
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolBen Jeffrey is a Senior Software Engineer in London with 13 years’ experience building reliable web platforms, data pipelines, and infrastructure for music, events, and large-scale retail supply chains. At Sainsbury’s he leads a seven-engineer team replatforming mission-critical supply-chain features, designing a Kafka-based data product that coordinates supplier-to-store delivery and keeps batch performance within tight tolerances. He has a strong back-end pedigree from roles at FIXR and Boiler Room—improving performance by orders of magnitude, migrating complex systems to Kubernetes, and integrating search and geospatial tooling. Comfortable across systems and data engineering, he blends pragmatic architecture with hands-on development and mentoring, and has contributed backend fixes and multipart S3 upload improvements to an established Django open-source project. Pragmatic about impact, Ben has moved from individual contributor work to focusing on technical leadership and aligning engineering effort with business direction. He pairs analytic problem-solving (capacity planning, graph/optimisation thinking) with a history of delivering dependable production systems under tight timelines.
13 years of coding experience
9 years of employment as a software developer
incomplete Informatics, incomplete Informatics at The University of Edinburgh
Stackoverflow
662reputation
103kreached
0answers
5questions
Github Skills (20)
javascript10
python10
back-end-development10
django10
aws10
amazon-s310
aws-s310
s3-bucket10
testing9
apidoc8
githubaction-workflow8
api8
github-ci8
hash6
go6
Programming languages (14)
Github contributions (5)
bradleyg/django-s3direct
May 2017 - Jun 2017
Directly upload files to S3 compatible services with Django.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:30 commits, 3 PRs, 3 comments in 16 days
Contributions summary:Ben primarily contributed to the Django-based back-end of the `django-s3direct` repository. Their work focused on ensuring compatibility with different Django versions, specifically addressing changes in newer versions like 1.11. They also enhanced the project's functionality by integrating with environment variables for AWS credentials and migrating to the Evaporate JS library for S3 multipart uploads. Furthermore, the user improved the project by refactoring the JavaScript, and added new tests.
djangoupload-filepythons3django-s3direct
jeffbr13/gandi-ddns
May 2017 - Jul 2019
Contributions:1 PR, 6 pushes, 1 branch in 2 years 2 months
zonesettingdnsdns-zonegandi
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