Guilherme Ledes

Paydock · London, United Kingdom (remote)

• Built and maintained identity and access capabilities across permissions, users, roles, tokens, authentication, feature toggles, and related platform services.
• Owned the identity and access domain end to end across AuthN, AuthZ, RBAC, OpenFGA, and SSO-related integrations.
• Drove delivery quality through GitLab pipelines covering type checks, unit, integration, and e2e tests, security scanning, container publishing, and Kubernetes deployments.
• Improved production reliability through OpenTelemetry-based tracing and logging plus Grafana-oriented operational visibility.
• Contributed to a confidential new product initiative from architecture setup through first production-ready scope.
• Helped modernize platform delivery by supporting clearer bounded contexts, Docker and Node.js project standards, and migration work from EC2-style hosting patterns to EKS.
• Reduced operational overhead on frontend delivery by supporting pipeline-driven hosting patterns around S3 and CloudFront during Angular-to-React transition work.

Tech: TypeScript, Node.js, NestJS, Express, Angular, React, MongoDB, PostgreSQL, AWS, Docker, Kubernetes, OpenTelemetry, Grafana, OpenFGA

Selected public case study: Identity and Access Platform Capabilities for Payments

KCSiT / SPMS · Lisbon, Portugal

• Worked across a microservices estate of roughly 35 services supporting SNS24 and related public-health applications used by the Portuguese public.
• Automated the mobile publishing flow for SNS24 in Azure DevOps, replacing manual build and release work with pipelines for the Apple App Store, Google Play, and Huawei AppGallery.
• Owned SRE-oriented operational work including Kubernetes services, deployments, ingress, and API-gateway concerns for the microservices estate.
• Implemented broker-backed healthcare integrations, including lab result retrieval through FHIR.STU3 and OTP validation flows for email and phone.
• Proposed and implemented shared modules that made SOAP, FHIR, and REST integrations more consistent across services.
• Helped introduce a monorepo pattern to manage shared dependencies and cross-service reuse more effectively.
• Raised the team's quality bar as a testing evangelist and improved day-to-day delivery discipline around reliable testing.
• Improved logging quality and delivery consistency in a reliability-sensitive public-health environment.

Tech: TypeScript, Node.js, NestJS, Express, MongoDB, Redis, Azure, Docker, Kubernetes, SOAP, FHIR, Azure DevOps

Selected public case study: Public-Health Microservices and FHIR Integrations

OSM Consultoria e Sistemas · Brasília, Brazil

• Reduced a critical monthly attendance routine by 92 percent, removing a major operational bottleneck.
• Modernized the main product frontend from a table-based legacy UI to a responsive Bootstrap-based experience.
• Improved the engineering workflow with Docker-based deployments, automated build flows, and a Bazaar Server to GitLab migration.
• Introduced user-facing and platform improvements, including long-running task feedback and a filesystem indexing library for large uploaded-asset sets.
• Helped shape the product's modernization path toward Node.js and React while raising day-to-day engineering discipline inside the team.

Tech: JavaScript, TypeScript, Node.js, React, PHP, Java, Docker, GitLab, Scrum, Linux, InterSystems Cache

Selected public case study: MENTORH Platform Modernization and Performance Work

Disclinc · Brasília, Brazil

• Contributed to Alphalinc, a supply-chain management product built on InterSystems technology.
• Helped evolve the internal @NetManager framework and ASDE build/deploy tooling used by the company.
• Worked in a distributed team across Brazil, Australia, and the United States using Scrum.
• Delivered software for customers across warehousing, government pharmacy logistics, fuel distribution, and energy sectors.
• Grew from junior to senior-level delivery while balancing product work with internal platform and tooling improvements.

Tech: C, JavaScript, SQL, HTML, CSS, Java, Linux, InterSystems Cache

Cast / FUNASA · Brasília, Brazil

• Maintained continuity on government project-analysis work through an outsourced delivery model.
• Supported requirements and data-model definition for operational public-sector software.
• Helped carry forward a solution intended to manage PAC-related civil-construction initiatives for the Brazilian federal government.

Tech: ASP 3.0, JavaScript, Microsoft SQL Server, HTML, CSS

CTIS / FUNASA · Brasília, Brazil

• Defined data-model direction for a solution managing PAC-related civil-construction initiatives.
• Worked directly with government requirements in a complex public-sector project environment.
• Strengthened systems-analysis skills around translating business constraints into workable database and application structure.

Tech: ASP 3.0, JavaScript, Microsoft SQL Server, HTML, CSS

Mirante Tecnologia / ANVISA · Brasília, Brazil

• Contributed to systems such as SNGPC, SINAVISA, and Electronic Petitioning.
• Worked on production software used in regulated public-health contexts early in my career.
• Helped maintain and evolve national health-surveillance systems with direct operational importance.

Tech: ASP 3.0, JavaScript, PL/SQL, HTML, CSS

Sicoob · Brasília, Brazil

• Maintained ETL routines and stored procedures for data-warehouse loading.
• Created and maintained reports while supporting related legacy tooling, VB6 development, and data-dictionary maintenance.

Tech: T-SQL, PL/SQL, IBM Db2, Oracle, Microsoft SQL Server, Crystal Reports

ApexBrasil · Brasília, Brazil

• Delivered a proof of concept for employee travel management and cost calculation.
• Built early experience in user communication and requirement understanding.
• Worked directly on a user-facing operational workflow covering food, transportation, and accommodation cost rules.

Tech: ASP 3.0, JavaScript, HTML, CSS