Cristian D.
Senior Software Engineer
Experience
Mar 2023 - Sep 2025
2 years 7 monthsSenior Software Engineer
N-iX
- Developed a secure digital banking platform using Python and FastAPI, integrating automated validation scripts to ensure data integrity and compliance across distributed modules.
- Implemented containerized services with Docker and optimized CI/CD workflows to support isolated build environments and vulnerability scanning for each deployment pipeline.
- Created automation scripts in Bash and PowerShell for system hardening, log analysis, and recovery validation across Linux and Windows environments.
- Engineered custom testing harnesses with Pytest and Robot Framework to simulate transactional edge cases and detect anomalous system responses automatically.
- Integrated PostgreSQL and Redis layers for secure data storage and caching, enforcing encryption and credential isolation in backend communications.
- Configured runtime monitoring with Prometheus and Grafana to analyze performance metrics and trigger alerts for latency or intrusion detection events.
- Enhanced backend reliability by adding recovery protocols using AWS Lambda and S3 event-based backup routines for system failover support.
- Developed reproducible test environments with PyRIT and sandboxed workflows to evaluate system robustness and prevent injection-based failures.
Jan 2020 - Feb 2023
3 years 2 monthsSenior Software Engineer
Microsoft
- Built intelligent learning management components using C# and .NET Core, with modular service integration and secure access control layers for users and educators.
- Deployed scalable containers via Docker and managed builds through Azure DevOps pipelines to automate continuous integration and runtime security checks.
- Developed Python-based scripts to detect system anomalies and evaluate service responses under high load, improving stability and attack surface resistance.
- Implemented encrypted communication flows between microservices using REST APIs and GraphQL for secure data exchange and consistent schema validation.
- Optimized asynchronous data pipelines using Node.js and TypeScript to synchronize content streams and maintain real-time feedback loops.
- Integrated telemetry using Elastic Stack and Kibana dashboards to visualize operational insights and uncover runtime inefficiencies.
- Automated penetration validation workflows using Python test suites and simulated injection scenarios to evaluate API resilience and endpoint safety.
- Enhanced content integrity with continuous monitoring tools, integrating OWASP-based scanning utilities for secure deployment pipelines.
Aug 2018 - Dec 2021
3 years 5 monthsSoftware Engineer
Huawei
- Developed core marketplace modules in Java and Spring Boot for data synchronization across distributed retail services and inventory sources.
- Integrated MySQL with backend caching via Redis to improve response times and ensure consistency during bulk catalog updates.
- Implemented automated monitoring using Jenkins and containerized staging environments with Docker to streamline delivery and testing cycles.
- Built API-level security validation tests with Postman collections to ensure endpoint integrity under stress and injection attempts.
- Automated data ingestion flows with Python scripts for import validation, duplicate prevention, and cross-source synchronization.
- Refined session management through JWT token mechanisms to enhance customer authentication and prevent unauthorized access.
Aug 2017 - Jul 2018
1 yearJunior Software Engineer
Alibaba
- Built internal analytics tools in Python and Django to automate campaign performance tracking and detect invalid traffic metrics.
- Created data ingestion modules using Kafka streams and MongoDB for efficient ad event storage and query performance.
- Developed batch reporting scripts in Bash for scheduled performance aggregation and anomaly detection across advertising pipelines.
- Enhanced integration reliability by optimizing REST API endpoints and introducing response caching for high-throughput workflows.
Summary
Senior Software Engineer with over 9 years of experience developing secure, scalable, and high-performance systems across finance, education, and enterprise platforms.
Skilled in backend automation, containerized deployments, and model evaluation pipelines with focus on reliability and system hardening.
Adept at integrating automation, analytics, and secure data flows using modern frameworks and scripting tools.
Languages
English
AdvancedEducation
Oct 2015 - Jun 2017
The Hong Kong University of Science and Technology
Master of Computer Science · Computer Science · Hong Kong
Oct 2011 - Jun 2015
The Hong Kong University of Science and Technology
Bachelor of Computer Science · Computer Science · Hong Kong
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