James Sewell
App Development Group Manager (SVP) at Citi
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolJames Sewell is a senior technology leader and software architect with 13 years building and operating cloud-native, big data and API platforms at scale. He has led platform and infrastructure teams through major transitions—from launching multi-cloud, FedRAMP-ready SaaS environments to consolidating global Kubernetes/AWS platforms serving hundreds of millions of users. His hands-on background spans Java backend systems that handled 27+ billion weekly requests, web crawling and indexing, and developer platform design (CI/CD, telemetry, security automation). Comfortable as an individual contributor, mentor, and SVP-level manager, he has delivered migrations, compliance programs, and multi-tenant runtime architectures across startups and large enterprises. Based in London, he combines pragmatic engineering with cross-organizational program leadership and a track record of turning high-risk infrastructure projects into repeatable, accredited platforms.
13 years of coding experience
16 years of employment as a software developer
Maths Further Maths Physics Computing Philosophy Law, Maths Further Maths Physics Computing Philosophy Law at Bexhill College, UKMEng Computer Science, MEng Computer Science at University of Southampton
English
Github Skills (13)
snyk10
vulnerabilities10
monitor10
security10
cli9
aws-cloudformation8
graph8
terraform8
python7
spring-web7
infrastructure-as-code7
troposphere6
oauth5
Programming languages (5)
Github contributions (5)
Hons/monitoring-dashboard
Aug 2015 - Sep 2015
Contributions:12 pushes, 1 branch in 1 month
Hons/aws-okta
Sep 2018 - Sep 2018
aws-vault like tool for Okta authentication
Contributions:4 pushes in 1 day
okta-authenticationaws-vaultauthenticationvaultokta
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