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Allan Farinas

Senior Full-Stack Software Engineer specializing in Python and AWS

West Covina, CASENIOR FULL STACK SOFTWARE ENGINEER11 years experienceSeniorHealthcare ITHealthcare StaffingEducation
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About

Backend/data engineer who has built production Python microservices (FastAPI) and AWS-native platforms for event ingestion and analytics, combining ECS/Fargate + Lambda with CloudFormation-driven environments and strong secrets/IAM practices. Experienced modernizing legacy logic with parallel-run parity validation and safe phased cutovers, and has demonstrated measurable SQL tuning wins (20–30s down to 1–2s) plus incident ownership in Glue/Step Functions ETL pipelines.

Experience

SENIOR FULL STACK SOFTWARE ENGINEERCareRev
BACKEND SOFTWARE ENGINEERCareRev
SENIOR ENGINEERING TEAM LEADAMN Healthcare
SOFTWARE ENGINEERAMN Healthcare
SOFTWARE ENGINEERSilversheet
SOFTWARE ENGINEERRevolution Prep
SOFTWARE ENGINEERUnBOOKed Appointments
GROUND SYSTEMS ENGINEERING INTERNJet Propulsion Laboratory
MOBILE APP DEVELOPMENT INTERNParsons
Teaching AssistantCalifornia State Polytechnic University-Pomona

Education

California State Polytechnic University-Pomonabachelor, Computer Science (2012)
Georgia Institute of Technologymaster, Computer Science (2014)

Key Strengths

  • Designed and operated production Python microservices on AWS for event ingestion/analytics workflows
  • Reliability engineering: JWT auth, explicit timeouts, idempotency keys, centralized error handling, consistent 4xx/5xx boundaries
  • AWS container + serverless delivery (ECS/Fargate + Lambda) with CI/CD, CloudFormation IaC, and secrets/config best practices (SSM/Secrets Manager, least-privilege IAM)
  • Built AWS Glue ETL pipelines (S3->curated tables->Athena) with schema evolution strategy, data quality checks, and quarantine handling
  • Modernized legacy logic via versioned APIs/batch jobs with parallel-run parity testing, stakeholder acceptance criteria, and phased rollout with feature flags/canary + rollback
  • SQL performance optimization with measured impact (reduced reporting query runtime from ~20–30s to ~1–2s via indexing and query rewrite)

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Languages

English

Skills

PythonJavaScriptSQLAWSAWS LambdaAmazon API GatewayAmazon RDSAWS GlueAmazon S3AWS Step FunctionsAmazon EventBridgeAmazon CloudWatchAmazon ECSAmazon EKSKubernetes