Edmar Barros
Staff Software Engineer & Solutions Architect
Brazil · Remote hello@edmarbarros.com LinkedIn GitHub
Senior Software Engineer with over 10 years of experience building scalable, data-heavy production systems. Proven track record in driving business impact through architectural refactoring (Monolith to Microservices), infrastructure cost optimization (-45%), and radical process automation (over 90% reduction in onboarding time).
“The mind that opens to a new idea never returns to its original size.”
Experience
Vendoo
Multichannel Listing Tool and Inventory Management Software for online sellers.
2 yrs 11 mos · Remote
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Staff Software Engineer & Solutions Architect
May 2024 – Present · 2 yrs
- Architecture Evolution: Leading the migration from a legacy monolith to an Event-Driven microservices architecture using Kafka, scaling the system to handle over 90k daily listings while reducing system latency by 300ms.
- Cost Optimization: Designed and executed an Elasticsearch improvement plan that reduced monthly infrastructure costs by 45%, with a roadmap for an additional 20% reduction.
- DevOps Efficiency: Optimized CI/CD pipelines via GitHub Actions and CircleCI, reducing Docker image sizes from over 1 GB to 300 MB (75% reduction), significantly accelerating deployment speed.
- Technical Leadership: Established internal "Tech Talks" and a structured 1:1 mentorship framework, successfully closing the system knowledge gap and accelerating peer career progression.
- System Reliability: Monitor system health and performance, proactively identifying and resolving potential issues before they impact users.
- React
- Node.js
- TypeScript
- Kafka
- PostgreSQL
- GCP
- BigQuery
- Elasticsearch
- Terraform
- Docker
- Kubernetes
- Helm
- CircleCI
- GitHub Actions
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Senior Software Engineer & Tech Lead
Jun 2023 – Apr 2024 · 11 mos
- Squad Leadership: Led the engineering team in planning, development, and delivery of new features, ensuring alignment with business objectives and product goals.
- Agile Ownership: Worked closely with the product team to define the scope of sprints, establish priorities, and develop clear acceptance criteria for tasks.
- Release Management: Managed complex release cycles and CI/CD pipelines via CircleCI, ensuring that all updates were tested and delivered on time while maintaining system stability.
- Technical Support: Provided hands-on support to the engineering team to troubleshoot issues and remove blockers, ensuring consistent progress throughout the sprint.
- Collaboration: Coordinated cross-team collaboration to streamline workflows, improve communication, and promote a culture of shared responsibility.
Paerpay
Mobile payment integration platform for the restaurant industry.
11 mos · Remote
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Senior Software Engineer
Jul 2022 – May 2023 · 11 mos
- Operational Impact: Engineered a real-time transaction monitoring dashboard using BigQuery, providing partners instant visibility into payment statuses and drastically reducing support volume.
- Business Growth: Integrated diverse SOAP-based POS systems and REST payment gateways, enabling the onboarding of major national restaurant chains.
- Data Reliability: Scaled backend infrastructure using Firebase and GCP to ensure high-speed payment processing during peak hours.
- React
- Node.js
- TypeScript
- Firebase
- GCP
- BigQuery
- Docker
EMB Software Engineering
Software house focused on helping companies become digital effortlessly.
8 mos · Remote
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Senior Software Engineer & Architect
Sep 2021 – Apr 2022 · 8 mos
- Strategic Consulting: Lead digital transformations via an API-First approach, shortening the development lifecycle and improving integration efficiency.
- Hands-on Leadership: Manage the full software lifecycle from technical specification to cloud deployment (AWS/Terraform) for data-heavy applications.
- Technical Support: Provided hands-on support to the engineering team to troubleshoot issues and remove blockers, ensuring consistent progress throughout the sprint.
- Collaboration: Work with the product team to streamline workflows, define the product-development roadmap, and ensure alignment with business goals.
- Python
- Django
- React
- Node.js
- AWS
- Docker
- Sanity CMS
- Shopify
- Terraform
- Redis
Citruslabs
Clinical-trial recruitment platform connecting patients to research.
2 yrs 9 mos · Remote
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Senior Software Engineer
Jan 2019 – Sep 2021 · 2 yrs 9 mos
- Process Transformation: Spearheaded a database-normalization initiative that slashed customer onboarding time from 2 weeks to 1 day (93% improvement).
- Data-Driven Insights: Implemented automated patient-funnel tracking (1,000+ responses/trial), identifying a 10% drop-off rate to optimize recruitment costs.
- Release Velocity: Implemented CI/CD via GitHub Actions, increasing deployment frequency and reducing time-to-market by 70%.
- Python
- Angular
- Node.js
- MySQL
- AWS
- Docker
- GitHub Actions
Education
MSc in Software Engineering · University of Coimbra · Attended
2013 – · Coimbra, Portugal
BSc in Computer Science · University of Coimbra
2009 – 2014 · Coimbra, Portugal
Languages
- Portuguese — Native
- English — Professional proficiency · Used in daily work communication.
- Spanish & French — Basic proficiency · Able to understand common phrases in professional settings.
Technical skills
- Programming
- Python (Django, FastAPI)JavaScript / TypeScript (Node.js, React)JavaPHPC
- Cloud & Data
- GCPAWSBigQueryKafkaElasticsearchDockerKubernetesTerraform
- Databases
- PostgreSQLMySQLMongoDBRedisFirestore
- CI/CD
- GitHub ActionsCircleCIJenkins
Social skills
- Communication
- Bridging the gap between complex backend architecture and business metrics.
- Leadership
- Led and mentored engineering teams, fostering high-scale engineering cultures.
Interests
IoT problem solver and Arduino enthusiast; home brewing enthusiast.