Registry · PA-44DA2D
Senior Backend Engineer, AWS Serverless, Node.js and Python
Five years building production backends for payments SaaS, energy operations and enterprise retail, lately for a Fortune 1 retailer. Node.js, NestJS and Python on AWS Lambda and SQS or on GCP, with PostgreSQL at the core. Takes a Stripe webhook or a queue-driven pipeline from design to production and stays on it after launch.
Availability
Available nowProfiles presented within 48 hours
Seniority
Senior ยท 5 years
Stack
Node.jsTypeScriptNestJSPythonFastapiDjangoAws lambdaSqsPostgreSQLMongodbRedisGCPKubernetesStripe
Languages
Spanish (native)English (B2)
- 2025 to 2026 Backend Engineer (contract) Oct 2025 to Aug 2026
- Built a centralized, auditable file-distribution API on NestJS, PostgreSQL and Google Cloud Storage.
- Contributed to Spark ETL pipelines on GCP orchestrated in Airflow.
- Built REST and GraphQL services for a surplus-management system on Express and TypeORM.
- 2024 to 2026 Senior Backend Engineer Aug 2024 to Jun 2026
- Unified the webhooks of two Stripe accounts into one billing and reconciliation pipeline, and raised MRR 22% with subscriptions and add-ons.
- Scaled a multi-tenant WhatsApp platform from zero to 4,000 daily active users.
- Made search 28 times faster with Typesense, and cut deploys from 10 minutes to under 30 seconds with Kubernetes rolling updates.
- 2025 to 2026 Python Backend Developer (contract) Apr 2025 to Mar 2026
- Designed a serverless reporting pipeline on AWS Lambda and SQS, provisioned as code with the Serverless Framework.
- Cut processing time from 30-40 seconds to 6-13 by moving the pipelines to Polars.
- 2022 to 2024 Technical Lead Jan 2022 to Aug 2024
- Led 6 developers across 8 concurrent projects and cut production incidents by a third with CI/CD and code reviews.
- Took a 2-million-record workflow from 4 hours to 15 seconds with parallel LINQ in C#.
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