Jun 2023 – Sep 2025 · 2 yrs 3 mos · Dublin, County Dublin, Ireland

• Led a team of three software engineers in maintaining and adding features to the API Gateway.
• Scaled the gateway to handle 90mil daily requests (10k requests per second peak).
• Rewrote the auth layer, reducing resource usage by 5x and paving the way for new features, while attaining 8 nines of availability.
• Added one-click automated canary deployments to the API Gateway.
• Led various other initiatives across the company.

Mar 2021 – Jun 2023 · 2 yrs 3 mos · Dublin, County Dublin, Ireland

• Worked on maintaining and adding features to the services in the managed wireless offering.
• Mentored teammates in software engineering and system architecture skills.
• Built both the APIs and user interface for purchasing and deploying eSIMs.
• Founding member of the Edge team.
• Led two software engineers in maintaining the API Gateway and all satellite services.
• Abstracted away the API Gateway complexity from engineers by adding a simplified configuration layer with sane defaults that is consumed by the Gateway’s components.
• Built an audio transcription API using machine learning models and on-premises AMD GPUs.
• Worked closely with other teams helping them design and scale their services.

Aug 2019 – Mar 2021 · 1 yr 7 mos · London Area, United Kingdom · Remote

• Founding member of the engineering team.
• Rewrote most of the legacy application to a new GraphQL API and React frontend application.
• Deployed and managed all the infrastructure for the new application, including Kubernetes clusters, PostgreSQL database with automated backups, and observability stack using Prometheus, Alertmanager, and Grafana.
• Set up all the CI/CD pipelines for the new codebases.
• Built various internal libraries to speed up feature development without sacrificing code readability and best practices.
• Mentored teammates and helped them ramp up their software engineering skills.

Dec 2017 – Jun 2019 · 1 yr 6 mos · Ji-Paraná, Rondônia

• Leverage Elixir to make 650k daily requests to a highly unstable web service and handle 900k daily background jobs.
• Manage four developers and one project manager.
• Make strategic decisions about the product and the company overall future.
• Migrated the infrastructure from a VPS setup to Kubernetes.
• Implemented CI/CD using Gitlab.
• Integrated Elasticsearch into the stack.
• Helped build a companion Windows/Linux service in C#, that could be installed in our customers computers.
• Clustered all Elixir applications with auto node discovery (using Kubernetes' DNS and libcluster).
• Implemented Agile practices to guide the team to continuously deliver value.
• Increased the application's observability using Prometheus and Grafana.

Feb 2016 – Nov 2017 · 1 yr 9 mos · Ji-Paraná, Rondônia

• Added RabbitMQ to the application stack to offload work to different servers.
• Implemented deploy automation using Jenkins.
• Migrated a big part of the API from PHP to Elixir, while maintaining and delivering features.
• Leveraged a Rust NIF to improve PKCS#12 certificates extraction performance by 6x.
• Trained and mentored a team of four developers.

Sep 2014 – Jan 2016 · 1 yr 4 mos · Ji-Paraná, Rondônia

• Solved problems the old stack could not fulfill by introducing Elixir to the company.
• Migrated the application database from MySQL to PostgreSQL.
• Implemented an automated developer environment using docker-compose.

Feb 2014 – Jul 2015 · 1 yr 5 mos · Ji-Paraná

• Helped build the main app using AngularJS with a PHP API.
• Wrote recurring tasks (multi tenant database backups, syncing applications) using Elixir.
• Built applications using Rails (multiple e-commerce apps and the company's blog).
• Helped manage e-mail servers for the corporate e-mail service the company provided.