Zack Hunter

Core Impact

• Delivered production tickets across frontend, backend, and AWS systems, working under SLA-driven deadlines for major UK banking clients
• Owned work end-to-end from investigation, through implementation, to production deployment

Performance & Efficiency

• Reduced processing backlog from 8 days to 2.5 days after global Amazon Web Services outage by redesigning AWS Lambda execution flow.
• Improved system efficiency by replacing API-based data access with direct database queries
• Prevented ~£3.5k/month losses by implementing Mutex logic to avoid concurrent finance process conflicts.

Engineering Work

• Built and maintained features using Angular (TypeScript) and Node.js
• Worked across multiple repositories, quickly understanding unfamiliar systems
• Refactored legacy code to improve maintainability and reduce future defects

Problem Solving / Production Work

• Investigated and resolved complex production issues independently across distributed systems
• Identified and fixed issues outside initial ticket scope, improving system stability
• Enhanced system observability by adding structured logging, removing sensitive logs, and improving Datadog monitoring

Cloud & Systems

• Developed and maintained AWS-based services including Lambda, Fargate, S3, DynamoDB and CloudWatch
• Worked with cloud-based architectures and deployment workflows in production environments

Collaboration

• Worked in an Agile environment with daily standups and dedicated QA team
• Created and reviewed pull requests, contributing to team-wide code quality
• Collaborated with senior engineers and architects for new projects

• Developed Python scripts and APIs to support ASIC sensor hardware testing
• Worked hands-on with hardware and software systems to improve product testing
• Gained experience across multiple languages: Java, C, C#, Python