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David Duarte

@davidduarte

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Backend Engineer at Airtm who developed fintech microservices for KYC, lending, and passkey authentication.

Argentina

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At Airtm, I developed and maintained Node.js/TypeScript microservices and REST APIs for a fintech platform using Kafka and PostgreSQL. I improved KYC and compliance workflows and developed USDC-denominated lending flows.

I also implemented passkey authentication and contributed to CI/CD modernization. Previously, at DXC Technology, I developed Python services on AWS; at GMResearch, I automated 3Scale workflows and worked on containerized deployments and backend services.

Experience

Work history, roles, and key accomplishments

Backend Developer

Airtm

May 2025 - Sep 2026 (1 year 4 months)

Developed and maintained Node.js/TypeScript microservices and REST APIs using Koa.js within a fintech platform. Improved KYC and compliance workflows, implemented passkey authentication, and contributed to CI/CD modernization.

NodeJS TypeScript KoaJS REST APIs Microservices Event Driven Architecture Kafka PostgreSQL Message DB Webhooks Personas Kount Nosis SimpleWebAuthn Datadog Kubernetes ArgoCD Bitbucket Pipelines AWS Parameter Store

Python Developer

DXC Technology

Feb 2024 - May 2025 (1 year 3 months)

Developed Python backend services for a large multinational fast-food client using serverless AWS architecture. Designed asynchronous workflows with SNS, SQS, and Lambda, and built PostgreSQL persistence layers with SQLAlchemy.

Python AWS Lambda API Gateway Step Functions SNS Amazon SQS S3 DynamoDB PostgreSQL SQLAlchemy Pytest AWS SDK (Boto3)AWS CDK

Software Analyst Jr. - Frontend & DevOps

GMResearch

Feb 2022 - Feb 2024 (2 years)

Automated 3Scale multi-tenant migration and recovery workflows with Python scripts. Built and maintained CI/CD and deployment workflows with Tekton, ArgoCD, Docker, OpenShift, Kubernetes, and Kustomize.