# Allan Bezerra **Software Engineer · Tech Lead · Software Architect** · Tech Lead at Luby - Email: allanbezerra95@gmail.com - Location: Brazil ## Summary Software engineer and tech lead building critical software since 2013 across energy, live broadcast, payments, SaaS and AI. I design scalable, secure systems (cloud migrations, microservices, event-driven platforms serving millions of users) and lead the teams that run them. Today I am a tech lead at Luby, leading client teams, owning architecture and shipping AI features to production. Previously senior software architect at Poli Digital, technical lead at Globo and technical lead of a 9-engineer team at Neoenergia. Postgraduate specializations in software architecture, applied AI engineering and cybersecurity. ## Key achievements - **−65% Company-wide overtime**: Delivered a solution that cut global overtime by 65% by 2018 and lowered OPEX. It earned the Meritocracy Award. (Neoenergia · 2016–2018) - **−40% System failures**: Architecture aligned with industry best practices, set as tech lead of a 9-engineer team. (Neoenergia · 2018–2020) - **+30% Operational efficiency**: Large-scale energy management system delivered for one of Brazil's largest utilities. (Neoenergia · 2018–2020) - **10⁶+ Users during live events**: Scaled critical systems for millions of users during live broadcasts of major global events. (Globo · 2020–2021) - **−30% Incident rate**: High-availability architecture and technology choices for Globo's critical systems. (Globo · 2021) - **−20% Time-to-market**: Streamlined CI/CD pipelines across Globo's digital platforms. (Globo · 2021) - **−30% Payment errors**: Go and Node.js payment services built with transaction integrity first. (Pag.aí · 2020–2022) - **1,350+ Users on one architecture**: Scalable architecture for mission-critical systems, owned as senior software architect. (Poli Digital · 2023–2025) - **AI LLM features in production**: Leading client teams that take AI features from prototype to real product workflows. (Luby · 2025–) ## Experience ### [Luby](https://luby.com.br/) · Software engineering · 2025 – Present _Software engineering company that builds and runs digital products for clients._ #### Tech Lead · 2025 – Present Technical lead for client engagements. I own the architecture, set the engineering bar across teams and take AI features from prototype to production. **What I did** - Lead engineering squads allocated to client products, from discovery and estimates to production releases. - Own architecture decisions and keep them documented, reviewed and consistent across repositories. - Review code across several teams, setting the standard for quality, security and maintainability. - Turn client goals into technical roadmaps and delivery plans the team can commit to. - Mentor engineers through pairing, design reviews and direct feedback. **Results** - Shipped **AI features to production**, integrating LLMs into real product workflows rather than demos. - Raised the code-quality baseline across client teams with consistent reviews and shared architecture guidelines. **Stack & practices:** LLMs, AI integration, Software architecture, Code review, Technical roadmaps ### [Poli Digital](https://poli.digital/) · SaaS · 2023 – 2025 _SaaS company running mission-critical systems used by thousands of people._ #### Senior Software Architect (Promoted) Promoted from squad leader to own the architecture of the platform behind the company's mission-critical systems. **What I did** - Owned the platform architecture and its evolution across squads. - Set the technical direction, architecture standards and review practices shared by the teams. - Led security work on critical flows: penetration tests, code reviews and hardening. - Drove database optimization on the systems under the heaviest load. **Results** - Delivered a scalable architecture serving **1,350+ users** across mission-critical systems. - Raised reliability through penetration testing, systematic code review and database tuning. **Stack & practices:** Software architecture, Penetration testing, Database optimization, Code review #### Squad Leader Led a cross-functional squad that maintained and evolved critical systems, with a focus on security, reliability and collaboration. **What I did** - Led a cross-functional squad covering development, support and operation of critical systems. - Designed the squad's agile support process, from intake and triage to resolution. - Introduced proactive risk mitigation: monitoring, root-cause analysis and preventive fixes. **Results** - **Significantly reduced production incidents** with proactive risk-mitigation strategies. - Cut operational costs while speeding up resolution with the new support process. **Stack & practices:** Agile, Incident management, Risk mitigation, Team leadership ### [Órigo Energia](https://origoenergia.com.br/) · Energy · Jan 2022 – Jan 2023 _Energy company serving large clients._ #### Senior Software Engineer · Jan 2022 – Jan 2023 Led the software team on high-complexity projects through the whole life cycle, from planning to launch and post-release maintenance. **What I did** - Led the development team across planning, build, launch and post-implementation maintenance. - Worked with project management to keep scope, deadlines and goals aligned. - Designed scalable solutions tailored to each client's needs. - Trained and mentored engineers and tracked individual progress. - Found process bottlenecks and introduced practices that sped up delivery. **Results** - Delivered **three critical features in six months**, improving platform scalability and user satisfaction. - Led several large-scale projects for major clients, recognized for performance and technical expertise. - **Increased team efficiency** with shared best practices and streamlined workflows. **Stack & practices:** Full SDLC, Solution design, Mentoring, Process improvement ### [Globo](https://www.globo.com/) · Media & broadcast · Nov 2020 – Dec 2021 _Brazil's largest media group. Digital platforms for web, mobile and smart TV, with traffic peaks during live broadcasts._ #### Technical Lead · Apr 2021 – Dec 2021 Technical leadership for innovation-focused projects, delivering robust and scalable solutions for millions of users. **What I did** - Defined architectures and selected technologies for high availability and resilience on critical systems. - Drove modernization with microservices, event-driven architecture and new architectural patterns. - Optimized development processes and introduced Agile practices to raise productivity. - Worked with business units to align engineering with company goals. - Mentored engineers and promoted knowledge sharing. **Results** - **Cut incident rates by 30%** with architecture and technology choices for high availability. - **Cut time-to-market by 20%** by streamlining CI/CD pipelines. - Led the adoption of microservices and event-driven architecture, modernizing Globo's digital platforms. **Stack & practices:** Microservices, Event-driven architecture, CI/CD, AWS, GCP, Agile #### Senior Software Engineer · Nov 2020 – Apr 2021 Development and maintenance of mission-critical systems across web, mobile and smart TV, as the team's technical reference. **What I did** - Built and maintained mission-critical systems for web, mobile and smart TV. - Analyzed performance and scalability ahead of peak-traffic events. - Ran Scrum and Kanban with cross-functional teams for faster cycles. - Integrated key systems with external partners to improve content delivery. **Results** - Scaled critical systems to **millions of users** during live broadcasts of major global events. - Delivered **cloud migrations to AWS and GCP** as part of Globo's digital transformation. - Reduced platform downtime with performance optimization and stronger monitoring. - Raised engineering quality by driving Clean Code, automated testing and thorough code review. **Stack & practices:** AWS, GCP, Cloud migration, Monitoring, Automated testing, Scrum, Kanban ### [Pag.aí](https://www.pag.ai/) · Fintech · Payments · Sep 2020 – Jul 2022 _Fintech payments platform._ #### Back End Developer · Sep 2020 – Jul 2022 Backend systems in Go and Node.js for payments, with data flow and transaction integrity as the first requirement. **What I did** - Built backend services in Go and Node.js for payment processing. - Designed APIs together with the frontend team to match user-interface needs. - Monitored reliability and removed performance bottlenecks before they reached users. **Results** - **Cut payment transaction errors by 30%**, improving reliability. - Delivered backend services that process hundreds of transactions a day efficiently. - Optimized performance with cloud-native tooling and serverless architecture. **Stack & practices:** Go, Node.js, Serverless, Cloud-native, REST APIs ### [Neoenergia](https://www.neoenergia.com/) · Energy · Nov 2013 – Dec 2020 _One of Brazil's largest electric utilities, part of the Iberdrola group. Grew from junior engineer to tech lead in seven years._ #### Technical Lead · Jun 2018 – Dec 2020 Led a team of 9 engineers building complex solutions for the energy sector, owning guidelines, architecture and tooling. **What I did** - Led and developed a team of 9 engineers. - Defined technical guidelines, architecture and tools aligned with market standards. - Aligned business requirements with technical deliverables together with stakeholders. - Supervised the full life cycle, from design to deployment and maintenance. **Results** - Delivered a large-scale energy management system, **raising operational efficiency by 30%**. - Established an architecture aligned with industry best practices, **cutting system failures by 40%**. - Improved team performance with continuous feedback and shared best practices. **Stack & practices:** Team leadership, Software architecture, Energy management systems #### Senior Software Engineer · Apr 2016 – Jul 2018 Scalable systems for growing user and data demand, including production deploys and support. **What I did** - Built scalable systems for growing user and data volumes. - Managed deploys and supported production environments without service interruption. - Contributed to the strategic planning of development projects. - Mentored junior and mid-level developers. **Results** - Supported **40% user-base growth with zero service interruptions**. - **Cut company-wide overtime by 65%** by 2018, reducing OPEX. - Improved work-life balance and employee satisfaction through gamification. - Received the **Meritocracy Award for Innovation and Recognition** for this work. **Stack & practices:** Scalability, Production support, Gamification, Mentoring #### Software Engineer · Jun 2014 – Apr 2016 Microservices in production and API integrations that automated critical business processes. **What I did** - Created and maintained microservices in production with Docker and Kubernetes. - Integrated internal and external APIs to automate critical business processes. - Led refactoring initiatives to improve code quality and maintainability. - Took part in architecture decisions as the technical framework evolved. **Results** - **Cut system downtime by 25%** through proactive maintenance and refactoring. - Automated business processes through API integrations, streamlining operations. **Stack & practices:** Docker, Kubernetes, Microservices, API integration #### Junior Software Engineer · Nov 2013 – Jun 2014 Web and mobile applications for the energy sector with Angular, Node.js and PostgreSQL. **What I did** - Developed web and mobile applications with Angular, Node.js and PostgreSQL. - Implemented features following Clean Code and design patterns. - Helped optimize the performance of critical systems. **Results** - Improved response time and scalability with optimized algorithms and database queries. - Launched new features in key applications, improving user experience and operational efficiency. - Reduced latency and improved the overall stability of critical systems. **Stack & practices:** Angular, Node.js, PostgreSQL ## Skills - **Software architecture:** Patterns: Microservices, Modular monolith, Hexagonal / Ports & Adapters, Clean Architecture, DDD, Event-driven, BFF, Micro-frontends, Design Patterns; Integration: API gateway (KrakenD), REST / OpenAPI, GraphQL, WebSockets, RabbitMQ, Kafka, AWS SQS / SNS, EventBridge, MQTT; Governance: ADRs, Spec-driven development, Architecture tests, Monorepos (Turborepo, pnpm), Feature flags, Code review standards; Reliability: High availability, Autoscaling, Canary releases, Resilience & retries, Health checks, Performance tuning - **Applied AI:** Models & providers: OpenAI, Anthropic Claude, Google Gemini, Groq, Cohere, DeepSeek, Azure OpenAI; Building blocks: Embeddings, Reranking, Classifiers, Prompt guard, Content safety, Speech-to-text, Model fallback & tiers; Agents & tooling: MCP servers, AI agents, LLM code review, AI-generated MR descriptions, Claude Code, Codex; Frameworks: Model Context Protocol SDK, Laravel AI, Laravel MCP - **Security:** Identity & access: Keycloak, AWS Cognito, WorkOS SSO, SAML, OAuth 2.0 / OIDC, JWT / JWKS, RBAC; AppSec in CI: SonarQube, Semgrep, Trivy, Gitleaks, detect-secrets, OWASP Dependency-Check, SAST; Protection: Rate limiting, Helmet, Input sanitization, WAF, HashiCorp Vault, AWS Secrets Manager; Governance: Penetration testing, Audit trails, Access approval workflows, LGPD data protection, Supply-chain protection - **Cloud & DevOps:** AWS: ECS, EKS, Lambda, S3, SQS / SNS, RDS / Aurora, ElastiCache, CloudFront, DynamoDB, API Gateway, Kinesis; Other clouds: GCP, Azure (AKS), Oracle Cloud (OKE), Cloudflare Workers, Vercel; Platform: Docker, Kubernetes, Helm, ArgoCD (GitOps), Crossplane, Ansible, Serverless; CI/CD: GitHub Actions, GitLab CI, Jenkins, AWS CodeDeploy, Expo EAS - **Backend:** Languages: TypeScript, Node.js, Go, PHP, Python, C# / .NET, Java; Frameworks: NestJS, Express, Fastify, Hono, Bun / Elysia, Laravel, Lumen, Gin, Echo, FastAPI, ASP.NET Core, AdonisJS - **Web & mobile:** Web: React, Next.js, Vue 3, Angular, TanStack, Tailwind CSS, shadcn/ui, Redux, Zustand, Storybook; Mobile: React Native, Expo, Kotlin (Android), Swift (iOS), watchOS - **Data:** Databases & search: PostgreSQL, MySQL, MongoDB, SQL Server, DynamoDB, Redis, Elasticsearch, OpenSearch, Typesense; ORMs & data tools: Prisma, TypeORM, GORM, Eloquent, EF Core, SQLAlchemy, Drizzle, Apache Airflow, Power BI - **Quality & observability:** Testing: Jest, Vitest, Playwright, Cypress, Testcontainers, Stryker (mutation), xUnit, Pest, pytest; Observability: Datadog, Sentry, OpenTelemetry, Prometheus, Grafana Loki, Elastic APM, Kibana - **Leadership:** People: Tech leadership, Mentoring, Continuous feedback, Individual growth tracking; Delivery: Scrum, Kanban, Technical roadmaps, Release management, Engineering metrics, Jira automation ## Education - **Software Architecture** · Postgraduate specialization - **Applied AI Engineering** · Postgraduate specialization - **Cybersecurity** · Postgraduate specialization - **Estácio** · Bachelor of Engineering (BE), Computer Software Engineering · 2017 – 2021 - **UNIASSELVI** · Associate's degree, Computer Science · 2016 – 2018 - **Universidade Salvador** · Bachelor of Engineering (BE), Electrical and Electronics Engineering · 2011 – 2016 ## How I work - **Reliability first:** Most of my results are about systems not failing: fewer incidents, fewer failures, less downtime. - **Architecture that scales people:** Guidelines, reviews and mentoring so the team keeps the bar high without depending on one person. - **It counts in production:** From live broadcasts to LLM features, the work matters when real users rely on it.