BBC News (this is a cross over between our 'old' and 'new' stack; the front-end is still on the old stack but has started to plug into the new backend)...
- Backend: AWS (ELB, SQS, DynamoDB, S3, CloudFront, CloudWatch etc) + JRuby + Go + Node + Redis
- Frontend: Varnish, PHP, Memcache, JavaScript (Mustache templates, custom modules, some React)
- Dev Tools: Go CLI apps, Docker, Vagrant, Spurious (fake AWS), Grunt, Make, Rake