Architected a serverless digital signing platform on AWS (Lambda, Step Functions, API Gateway, EventBridge). Led product definition and management. Built signing workflows, certificate generation, and digital signature implementations using PKCS and CAdES, with signing keys secured in AWS CloudHSM. Integrated KYC identity-verification workflows for customer onboarding. Helped achieve ISO 27001:2022 certification by aligning infrastructure and security practices with the standard's controls and PII-handling requirements.

Built a Slack bot that automated HR and IT workflows—onboarding/offboarding, IT help and access requests, and support rotations—reducing manual coordination across teams. Developed a patient-facing, card-present payment app on Stripe Terminal in React Native, plus the supporting API endpoints, for healthcare billing. Integrated ClickUp, Rippling, Sentry, Slack, and Google APIs to streamline internal engineering and operations workflows. Created internal AI-assisted developer tools with Claude Code—code review, documentation generation, CVE triage, QA edge-case identification, and automated test generation—to improve engineering-team productivity.

Built secure cloud infrastructure for Banco Nexa, Guatemala's first cloud-native bank, supporting its regulated fintech services. Configured and deployed the cloud environment for a new banking application, improving scalability and performance. Designed a hybrid-cloud architecture enabling secure data transfer between on-premise and cloud systems. Part of the team that migrated a large-scale application to AWS. Hardened infrastructure and data handling to safeguard sensitive financial information.

Founded and run a custom-software consultancy, owning technical direction, client delivery, and project management end-to-end. Owned client relationships, requirements definition, scoping, and quoting.

Led and supported on-site and distributed developers, resolving technical and team conflicts and prioritizing deliverables against company goals. Mentored junior developers across Guatemala, Germany, and Ukraine, raising code quality and adherence to engineering best practices. Created an internship and onboarding program, including training materials, that ramped new hires on Ruby on Rails and the company stack. Partnered with cross-functional teams to diagnose and resolve complex technical issues, improving system stability. Designed a modular software architecture that accelerated development, testing, and deployment of new features. Defined and built new services and products from the ground up. Worked directly with clients to gather requirements and define project scope.

Delivered features for internal tools and client-facing products. Implemented software changes and new functionality to design specifications across the stack. Contributed across the full development lifecycle—design, coding, testing, and debugging. Developed and maintained full-stack features spanning back-end services and front-end interfaces.