Wilson Costa
Technical Lead
Lisbon
Summary
Diligent Technical Lead with a strong foundation in backend development, recognized for delivering robust and scalable solutions across diverse applications that enhance system performance and reliability. Expertise in database management and API integration drives successful implementation of innovative technologies. Proven ability to lead teams in achieving project goals while fostering a collaborative environment. Committed to continuous improvement and staying current with industry trends to ensure optimal results.
Overview
5
5
years of professional experience
3
3
Certifications
2
2
Languages
Work History
Backend Engineer and Scrum Master
BMW - Critical Techworks - Devoteam
02.2023 - Current
- Served as Backend Engineer and Scrum Master on a large-scale distributed system using Quarkus services, each with dedicated PostgreSQL schemas. Infrastructure management with Kubernetes deployments using Helmfile, CI/CD pipelines with GitHub Actions, infrastructure creation with Terragrunt + Terraform for Azure. Operations monitoring with Grafana dashboards, and support to ITSM ticket handling using ServiceNow.
- Led Kafka-based data migration, creating a microservice to process thousands of large JSON events (~2MB each); implemented parallelization and topic partitioning, turning 10K events, 15s/event batch process into an asynchronous near-real-time pipeline.
- Optimized monolith imports, improving in-memory graph usage and fixing Hibernate queries, having more than 100% improvement by reducing processing time from ~20 minutes to ~15 seconds. Achieved by establishing the correct associations between entities and enhancing the search mechanisms using hash based traversal.
- Boosted Database Performance: Increased PostgreSQL performance by indexing and rewriting queries, reducing operations from ~1/2 minutes to 500ms across partitioned tables with 10+ millions of rows.
- Quarkus Migration Update: Executed migrations from Quarkus 2 → 3.20 using structured upgrade recipe templates with Maven Rewrites to ensure reliability and compatibility, while creating an automated migration process.
- Enhanced Frontend Suggestions: Improved Monaco Editor having 10K+ auto-suggestions in Angular from 30s per keystroke to ~10ms, enabling real-time user experience.
- Built distributed caching: Developed a headless distributed cache using Hazelcast in Quarkus, replacing service-specific Caffeine caches with a centralized cache managed by a primary service, ensuring cache updates are propagated immediately across all services instead of waiting for individual cache refreshes.
- Augmented Security Integration: Implemented Quarkus OIDC-based authentication, enriching user personal information coming from the OIDC provider with external-provider roles.
- Agile Leadership: Facilitated standups, planning, retros, and JIRA scope management as Scrum Master, while mentoring other developers.
Full Stack Developer
BMW - Critical Techworks - Devoteam
10.2021 - 02.2023
- Delivered fullstack features for a modular widget-based architecture with a dashboard platform with real-time data and third-party integrations.
- Built Quarkus and NestJS APIs, exposing data via GraphQL, CosmosDB (cloud NoSQL) and PostgreSQL for data persistence.
- Managed Kubernetes deployments via Helmfile, Jenkins and ArgoCD pipelines for automated builds and releases.
- Built Widget Ecosystem Development: Built modular, reusable widgets (e.g. sales timelines, world clock, car descriptions, visualization of car errors, and Microsoft Teams integration) supported by APIs, improving dashboard extensibility.
- Integration of a Content Management System: Implemented a news side panel integrated with Strapi as the CMS, enabling designated users to create and manage news articles, which are dynamically displayed in the side panel.
- Designed High-Performance APIs: The backend microservices achieved
- Database Engineering: Developed and optimized queries in CosmosDB and PostgreSQL, improving data reliability and supporting high-traffic dashboard usage for 1000+ users.
- Frontend Migration Update: Applied an Angular migration from version 12 to 14 and a BMW internal library using the latest components and styles.
Full Stack Developer
Morphis Tech - Devoteam
03.2021 - 09.2021
- Worked on modernizing legacy Oracle Forms applications into web-based systems, improving maintainability, performance, and frontend-backend integration.
- Used AngularJS for a legacy modernization of user experience and an interactive web UI. Groovy on Grails for server-side logic.Oracle SQL for data persistence. GitLab and Jenkins for source control and automated deployments.
- Data Modernization & Integration: Recreated the data creation workflow using JSON, enabling seamless communication with AngularJS front-end.
- Business Logic Optimization: Refactored legacy JavaScript tax functions to be simpler, more efficient, and reliable.
- Performance Improvements: Reviewed auto-transformed APIs and optimized database access, significantly reducing query times and improving system responsiveness.
Education
Master's Degree - Informatics and Computer Engineering
Instituto Superior de Engenharia, Lisbon (ISEL)
Lisbon09.2021
Bachelor's Degree - Informatics and Computer Engineering
Instituto Superior de Engenharia, Lisbon (ISEL)
Lisbon10.2020
Skills
Languages: Java, TypeScript, JavaScript, SQL, Kotlin, NodeJS
Certification
Professional Scrum Master – Scrum.org | 2024
Timeline
Backend Engineer and Scrum Master
BMW - Critical Techworks - Devoteam
02.2023 - Current
Full Stack Developer
BMW - Critical Techworks - Devoteam
10.2021 - 02.2023
Full Stack Developer
Morphis Tech - Devoteam
03.2021 - 09.2021
Bachelor's Degree - Informatics and Computer Engineering
Instituto Superior de Engenharia, Lisbon (ISEL)
Master's Degree - Informatics and Computer Engineering
Instituto Superior de Engenharia, Lisbon (ISEL)