Open to opportunities

William Ventura

@allex

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Senior Software Engineer specializing in scalable, test-driven backend systems and cloud-native architectures.

El Salvador

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What I'm looking for

I seek senior engineering roles focusing on scalable backend systems, cloud-native architectures, TDD, strong DevOps practices, mentorship, and impact-driven product delivery.

I am a Senior Software Engineer with extensive experience building scalable, maintainable systems using TDD and modern design patterns. I contribute across the SDLC, from planning and implementation to deployment, monitoring, and post-production support.

My work emphasizes pragmatic DevOps and cloud-native practices — Kubernetes, GCP/AWS, CI/CD, and Pub/Sub-driven architectures — and I regularly lead API design, performance improvements, and cross-team onboarding. I have driven major migrations (payment providers), built order and fulfillment microservices, and converted webhook flows into resilient asynchronous pipelines.

I mentor teammates, enforce consistent testing and error-handling standards, and prioritize measurable operational excellence to deliver user-focused solutions quickly and reliably.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

ZenBusiness

Mar 2022 - Present (3 years 8 months)

Led development of order and payment systems including a new cart/configuration flow and Stripe Connect migration, improving order provisioning reliability and enabling campaign-based product pricing. Designed pub/sub integrations and microservices to increase throughput and decouple partner webhook processing.

Python Django GraphQL NodeJS React Pub Sub Kubernetes PostgreSQL Stripe TDD

Senior Software Engineer

Ohi Technologies

Feb 2021 - Feb 2022 (1 year)

Maintained and improved an instant delivery platform, integrating multiple courier providers and resolving performance issues to reduce N+1 queries and improve reliability and tracking. Owned webhooks, pricing/fulfillment flows, and on-call support.

Django DRF REST APIs Celery PostgreSQL Heroku Docker GitHub Actions Performance Tuning Sentry

Python Developer

SolvoSoft

Jan 2020 - Dec 2020 (11 months)

Developed and maintained multiple Django projects including an e-learning platform, membership management, and radio-generator automation; integrated payments and implemented async workflows and CI/CD for deployments.

Django Celery PayPal Docker Nginx PostgreSQL BASH JavaScript CI CD Testing

Freelance Developer

Instituto de Acceso a la Información Pública

Jan 2017 - Dec 2017 (11 months)

Led a 5-person team to build a public information access platform, established DevOps pipelines, and coordinated stakeholders to deliver biweekly production releases that met legal and regulatory requirements.

PHP Laravel Vue DevOps Git CI CD Stakeholder Management Team Leadership Sprint Planning

Backend Developer

Bird Consultores

Jan 2016 - Dec 2016 (11 months)

Developed backend APIs and production deployments for an airport maintenance compliance application, ran stakeholder workshops and backlog refinement to deliver digital checklists and reporting features.