About
From code to business decisions.
I started in 2022 as an intern at Sebrae PE. At Mobs2, I grew from intern to mid-level developer on telemetry systems for agribusiness, public transportation and construction — already working with the architecture team. At FCx Labs (Ferreira Costa), I became Senior Engineer and Tech Lead of the marketplace, designing event-driven integrations and engineering standards for the team.
Today I'm a Solutions Architect and partner at E7Lab, a fully remote software studio. I lead the team, make architecture decisions, manage projects, own client relationships and take part in the company's business decisions.
Architecture
DDD, Clean Architecture, CQRS, modular architecture, BFF, microservices.
Distributed systems
EDA, RabbitMQ, SNS/SQS, gRPC, REST, serverless.
Data & cloud
PostgreSQL, Redis, MongoDB, AWS, Docker, Kubernetes, Terraform.
Leadership & business
Project management, clients, ADRs, technical interviews, mentoring.
Career
Where I built what I know.
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06/2026 — present Remote
E7Lab · Solutions Architect & Partner
- Leading the technical team and making architecture decisions across the studio's projects
- Managing projects from discovery to delivery, with direct client relationships
- Weighing in on the company's business decisions alongside the partners
- Architecture consulting for startups: technical assessment, domain modeling and ADRs
- Building engineering processes, architecture and culture: sprints, code review, CI/CD, three environments and observability
Solutions architecture · DDD · ADRs · Project management · Client relationships
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06/2025 — 06/2026 Recife, Brazil
FCx Labs · Senior Software Engineer & Tech Lead
- CI/CD pipeline optimization: −47.5% in execution time (80 → 42 min)
- Architecture design for integrating the marketplace with integrators such as AnyMarket and E-cross
- Boilerplate for new projects with modular architecture and DDD; shared infrastructure in private NPM packages
- Separate read and write models with CQRS, plus Redis caching in the BFF
- ADRs, technical candidate assessment and alignment with external consultancies
- Recognized as a standout professional of 2025
TypeScript · NestJS · PostgreSQL · RabbitMQ · Redis · gRPC · GitLab CI
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10/2024 — 05/2025 Recife, Brazil
FCx Labs · Software Engineer
- Product management service for marketplace sellers (Seller Center)
- Architecture design for messaging-based product import and the new back-office application
- Event-driven integrations between the marketplace and the e-commerce platform
- Technical onboarding, mentoring, code review and the production change/deploy process
TypeScript · NestJS · PostgreSQL · RabbitMQ · gRPC · AWS Lambda · S3 · Docker · Kubernetes
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04/2023 — 10/2024 Recife, Brazil
Mobs2 · Intern → Mid-level Full Stack Developer
- Architecture design and backend for tracking scheduled vehicle itineraries
- Backend for public transportation auditing and machinery monitoring in agribusiness
- Frontend for a new construction product and asynchronous email reports
- Led infrastructure and architecture documentation; created the documentation standard
- Monitoring automation in Python and refactoring with TDD
TypeScript · NestJS · PHP/Laravel · Vue.js · C#/.NET · AWS (Serverless, SNS, SQS) · SQL Server · MongoDB
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08/2022 — 04/2023 Recife, Brazil
Sebrae PE · Software Development Intern
- QA for the internal system and resolving user tickets with JavaScript
HTML · CSS · JavaScript · Fluig
Community
Knowledge that flows.
Mentoring & onboarding
Technical onboarding for new developers, candidate assessment and structured learning paths — like a 12-week backend program with NestJS.
Workshops in Recife
In preparation: sessions with university students on engineering fundamentals — architecture, DDD and technical decision-making — in the Porto Digital ecosystem.
Documentation as culture
ADRs, design standards, Git and CI/CD written down since my internship — so the team's knowledge never depends on a single person.
Speaker bio
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Download photoCristiano Rego Barros is a Solutions Architect and partner at E7Lab, and a master's student in Software Engineering at CESAR School.
Cristiano Rego Barros is a Solutions Architect and partner at E7Lab, a software studio where he leads the technical team, architecture decisions and client relationships. Previously, he was a Senior Software Engineer and Tech Lead at FCx Labs (Ferreira Costa), where he worked on the marketplace and was recognized as a standout professional of 2025. He holds a bachelor's in Computer Science and is pursuing a master's in Software Engineering at CESAR School, where he researches resilience in distributed systems. He writes about software architecture and design.
Cristiano Rego Barros is a Solutions Architect and partner at E7Lab, a fully remote software studio. There, he leads the technical team, makes architecture decisions, manages projects and owns client relationships, while also taking part in the company's business decisions.
He started his career in 2022 and, in just over three years, went from telemetry systems for agribusiness, public transportation and construction at Mobs2 to Senior Engineer and Tech Lead at FCx Labs, part of the Ferreira Costa group. There, he designed event-driven integrations for the marketplace, introduced engineering standards to the team, cut CI/CD pipeline time by 47.5% and was recognized as a standout professional of 2025.
He holds a bachelor's in Computer Science from CESAR School, where he is now pursuing a Professional Master's in Software Engineering, researching why distributed systems fail at the boundaries between services. He writes about architecture, DDD and software engineering and is committed to developing new engineers through mentoring and workshops in Recife.