Andrew Flanagan

Senior Software Engineer @Kigen

Belfast, GB

Designed cloud-native APIs and backend services for large-scale eSIM identity platforms- Built event-driven microservices managing SIM inventory and lifecycle workflows- Designed architecture and observability improvements to increase system reliability- Developed AWS serverless components using Lambda (Node.js), S3, SQS and DynamoDB- Implemented secure authentication integrations using OAuth2, JWT and telecom standards- Improved engineering quality by modernising testing frameworks and increasing coverage- Designed event-driven data pipelines supporting analytics and insight platforms- Delivered platform enhancements and M2M OS integrations across telecom infrastructure- Built CI/CD pipelines and containerised deployments using Docker and GoCD- Mentored junior engineers and promoted technical standards and code qualityTech Stack- Languages: Java (JDK 8–21), Node.js/JavaScript, Bash, Groovy, YAML- Frameworks: Spring Boot, Spring Cloud, Spring Security, Spring Data MongoDB, Vert.x- Frontend: React, Redux Toolkit, Material-UI, Axios- Cloud: AWS Lambda, API Gateway, S3, DynamoDB, RDS, CloudFormation, CloudWatch, Amplify- Data: MongoDB, DynamoDB, Redis, Hazelcast, H2- Containers & CI/CD: Docker, Jib, GoCD, Bitbucket, Git, AWS CodeBuild, Maven, Gradle- Observability: Splunk, Logback, Spring Boot Actuator- Security: OAuth2, JWT, Okta CIAM, TLS/mTLS, BouncyCastle, AWS KMS, HSM- Testing/Performance: JUnit, Spock, Jacoco, SonarQube, Playwright, Gatling- Standards: REST, SOAP/WSDL, JSON, XML

University College Dublin

Bachelor's degree, Computer Science

Ulster University

Master's degree, Computer Software Engineering