Application Support Engineer
The Co-operative Bank
Sep 2022 - Present
- Monitored business-critical enterprise production systems in a regulated financial environment, analysing authentication, transaction, and fraud signals to detect anomalies and resolve 100+ incidents per month across online banking and backend services
- Used observability dashboards and log analytics to identify recurring failure patterns and drive data-driven fixes, reducing mean resolution time by 30% and repeat incident rate by 25%
- Managed account lifecycle and system state synchronization via ITSM tooling and runbook automation, ensuring data consistency across authentication, ML-driven fraud detection, and core banking systems
ITIL/ITSMJira
Linux
GitSoftware Engineer
Peltarion
Nov 2020 - Jun 2022
- Owned end-to-end development of a production-grade service using AWS CDK (TypeScript) and Java-based AWS Lambda functions, automating manual campaign management and scaling to 6M+ emails/day
- Launched with AWS CloudWatch dashboards used daily by enterprise clients, cutting costs by $8K+ monthly and saving 80+ hours of manual work each week
- Integrated with live systems processing 40M+ events/day by connecting AWS SNS and SQS to internal services and persisting artifacts in AWS S3, reducing campaign processing time by 23%
TypeScript
Java
AWS
Node.jsMachine Learning Engineer Intern
THG Ingenuity
Apr 2020 - Sep 2020
- Built a Python NLP pipeline with scikit-learn, spaCy, and NLTK, then productionized it as a Flask API with Redis caching, cutting processing time from 5 to 3 minutes across 1,200+ requirements per month
- Engineered a BERT-based dependency extraction component for requirement lists, improving project planning efficiency by 37%
PythonNode.js
ExpressSoftware Engineer Intern
THG
Apr 2019 - Sep 2019
- Built 30+ AWS Lambda functions and 15+ Step Function workflows using REST API integrations to improve reuse and reliability, reducing execution time by 65% and saving $1K per large-scale deployment
- Built a Spring Boot app, containerized with Docker, and deployed on AWS EC2, serving 30+ stakeholders
AWS
Docker
Spring BootJavaContact Form
Please contact me directly at sediqsergio(at)gmail.com or drop your info here.