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Senior Python Software Engineer at Workana. Workana is the largest platform for hiring remote talent in Latin America. With over 10 years of experience and 200k+ projects closed per year, we help companies in the US and worldwide find the best professionals quickly and efficiently.. The Role. As a . Senior Software Engineer (Python/SQL). , you will take ownership of stabilizing and modernizing a portfolio of critical applications and scheduled jobs that power business operations. This is a hands-on role where you’ll dive deep into existing Python/SQL (and occasional PHP) codebases, uncover hidden dependencies, and bring structure and reliability to legacy systems.. Your mission will be to . transform fragile scripts into well-documented, testable, and resilient workflows. , while leading the migration of legacy schedulers and Airflow instances into a . managed Airflow environment. . This role is ideal for someone who enjoys reverse-engineering complex systems, creating clarity out of chaos, and driving high-impact modernization efforts.. What You’ll Do. . Map legacy systems: read Python/SQL (occasional PHP), document data flows, dependencies, and failure modes. . . Modernize & de-risk: refactor scripts, add tests, improve retries/idempotency, kill redundant jobs. . . Migrate to managed Airflow (AWS): plan DAG moves, secrets, CI/CD, and observability. . . Improve reliability/visibility: alerting, on-call-friendly logs, backfill strategies, fewer false alarms. . . Partner with stakeholders: capture the “why,” translate to requirements, communicate trade-offs/timelines. . . Raise the bar: code reviews, mentoring, security/documentation culture. . . . 5+ years software engineering. Strong Python (3.x). Advanced SQL (schema design, tuning) on a major RDBMS. . . Experience owning production schedulers/pipelines (cron/Airflow/etc.). . . Comfortable reading unfamiliar code and producing clear docs/designs. . . Git, CI/CD, Linux, AWS; solid testing/debugging and pragmatic refactoring. . . Excellent communication with non-engineering partners. . . Nice to Have. . PHP familiarity for legacy jobs/apps; Django. . . Airflow (DAG design, sensors/operators, backfills) and migrations to managed Airflow. . . ETL/ELT patterns; queues (SQS/Pub/Sub/Kafka); observability (Datadog/CloudWatch/Otel); IaC (Terraform); containers (Docker); secrets mgmt (Vault/SSM/Secret Manager).. . Company Location: Argentina.