Dilan Sachintha

Worked with Java backend development, build pipelines, and Kubernetes automation of the mediation telecommunications platform handling billions of events per day.

• Contributed to feature development, working closely with architects and product owners to turn requirements into reliable backend code.
• Resolved production defects across the full stack (React, Spring Boot backends, PostgreSQL/MariaDB databases and infra automation) using debugging tools, system logs, and metrics.
• Implemented automated regression and smoke testing pipelines across multi-environment configurations to ensure platform resilience prior to releases.
• Authored a master's thesis on creating Kubernetes Operators to replace Helm-based lifecycle management enabling declarative reconciliation, automated self-healing, and enhanced observability.
• Improved platform monitoring using OpenSearch, Prometheus, and Grafana, helping identify system bottlenecks and keep mediation services reliable.

Worked in the Open-Source Ballerina platform (a programming language designed for cloud-native integration) handling design, development, documentation, and customer support of Java-based enterprise integration libraries powering cloud-native workflows.

• Owned the full lifecycle of core libraries and APIs and used proper design patterns and abstractions to ensure backward compatibility and minimal user impact.
• Architected asynchronous event-driven pipelines using Kafka to decouple microservices, eliminating message losses during traffic spikes.
• Authored unit, integration, and load tests raising test coverage to over 85%, significantly reducing regression bugs in production releases.
• Led technical discussions, architecture designs, and structured code reviews across the team ensuring high code quality and clean modular design.
• Resolved critical production incidents, performance issues, database bottlenecks, and memory leaks using memory dumps, trace logs, observability metrics, profiling tools, and network tracing tools.
• Refactored and modernized the platform's OpenAPI library to improve developer experience, transforming an unmaintainable codebase into robust, well-structured APIs for downstream services.

Python teaching assistant for the Programming Fundamentals module. Guided students in problem-solving strategies, design, implementation, and troubleshooting.

Worked in the team that manages the stock brokerage platform and actively engaged in development related to monitoring components.

• Developed a server monitoring tool which monitors components in the stock brokerage using Python, Angular, TypeScript, and Node.js.
• Built a log parsing system utilizing the Elasticsearch stack to predict upcoming server downtimes.

Offered data conversion services to clients across the USA, Europe, UK, and Australia — transforming large datasets across JSON, CSV, YAML, XLSX, and XML formats using Python.