Luiz Silveira

• Scope & domain: accountable for Prepayment and Split—critical, high-throughput payment flows with strict regulatory compliance (BACEN/Register). • People leadership: managing ~10 engineers; hiring & onboarding, 1:1s, continuous feedback, IDPs, technical coaching, career growth. • Business outcomes: ownership of stability/efficiency KPIs and deliveries that drive advance revenue and correct merchant/partner distribution. • Architecture: .NET (C#) and Node.js microservices; event-driven with RabbitMQ/Kafka (outbox/inbox, sagas, DLQs, idempotency, exponential retries). • Platform & cloud: Docker, Kubernetes (AKS) with HPA tuning, config/secret governance; AWS (S3, SQS, CloudWatch) for integrations, telemetry & observability. • Reliability & ops: SLIs/SLOs, distributed tracing, structured logging, proactive alerting, circuit breakers, rate limiting; zero-downtime releases (blue/green, canary) & rollback playbooks. • Quality & DevEx: standardized contract/load/integration tests, automated CI/CD, API versioning; end-to-end observability (OpenTelemetry) and lower MTTR via instrumentation/runbooks. • Incidents & process: end-to-end incident management with blameless post-mortems, root-cause fixes, hardening of critical services. • Product & stakeholders: close partnership with Product, Finance, Risk, Operations, Legal; impact-driven backlog, risk management, clear roadmap communications. • Governance & compliance: adherence to Central Bank/registradora rules; controls, audit trails, segregation of duties. • Continuous improvement: latency/throughput optimizations, noise reduction, standardized integrations, and higher resilience across Split and Advances during peaks/critical windows. Stacks & practices: .NET (C#), Node.js, RabbitMQ, Kafka, MassTransit, Docker, Kubernetes (AKS), AWS (S3, SQS, CloudWatch), OpenTelemetry, CI/CD, SRE/operability, SLIs/SLOs, incident management, OKRs.

• Business Domain (Omnichannel & Back Office): architecture design and active role in the omnichannel expansion (e-commerce ↔ OMS ↔ stores, marketplaces, service gateway). • ERP/Finance: implementation of TOTVS Protheus for tax, finance, and accounting, integrating with sales and distribution systems. • Product partnership: impact-driven prioritization focused on availability, conversion, and customer experience, with KPI tracking. • Technology & Architecture — Integrations/Data: Apache NiFi and PL/SQL for ETL and orchestration (resilient jobs, data governance). • Technology & Architecture — Services/APIs: Node.js services, API contracts and versioning, automated tests. • Cloud & Observability: AWS (S3 for assets/logs, SQS for async queues, CloudWatch for metrics/alerts), CI/CD, code reviews, living documentation, deployment/rollback playbooks. • Management & Processes: led a ~10-person team (hiring, onboarding, 1:1s, feedback, growth plans). • Delivery & Operations: schedule/risk management and cross-team dependencies; SLAs/SLIs, incident response, and action-oriented post-mortems. • Stacks: Node.js, Apache NiFi, PL/SQL, AWS (S3, SQS, CloudWatch), Protheus (tax/finance/accounting), e-commerce/OMS/store integrations.

• IT leadership for financial, accounting, and tax systems (SAP), serving the entire Finance board. • Led multidisciplinary teams (~25 people) across evolution, operations, and support of mission-critical platforms. • Key project: active role in the company-wide SAP implementation across the entire back office, including integrations with Sales & Distribution systems (ERP/OMS/POS and satellites). • Architecture & reliability ownership: integration standards, change governance, SLAs/SLIs, incident management, and continuity for month-end close and other critical windows. • Vendor/project management: partner selection, scope and delivery management, schedules, budget, and quality assurance for outsourced projects. • Finance/Business partnership: impact-driven prioritization, compliance, and operational resilience. Skills & practices: SAP (Finance/Accounting/Tax), team leadership, outsourced project management, systems integration, architecture guidance, production support (operability, monitoring, continuous improvement).

• Managed a ~10-person team dedicated to store systems (POS, store back office, integrations). • Led omnichannel innovation projects, leveraging learnings from prior roles: – Linx OMS: ship-from-store and pickup-in-store, expanding inventory availability and shortening delivery times. – In-store mobility (smartphones as POS) to speed up service and reduce queues on the sales floor. • Built and operated integrations between Linx (StorEX/OMS) and corporate systems (SAP, Datasul, legacy), with a focus on reliability (retries, idempotency, DLQs) and observability (structured logs, metrics). • Operations & stability: incident management, SLA/SLI definition, performance improvements in critical routines, and low-downtime releases. • Process & governance: development standards, API versioning, living documentation, and deployment/support playbooks. • Product & Store Ops partnership: impact-driven prioritization to improve conversion and customer experience; monitoring store-ops KPIs. • People & leadership: 1:1s, continuous feedback, technical upskilling, and distributed ownership to increase team autonomy. Stacks & context: Linx StorEX/OMS, PL/SQL, Python, Node.js, Java, Apache NiFi; integrations with SAP and Datasul; POS and store satellite systems.

• Specialist in sales systems for large retail. • Migration from legacy sales system to Linx StorEX: project completed in 6 months with rollout to 210 stores in ~1 year. • Defined integration models between the LINX solution and corporate systems (SAP, Datasul, and legacy), ensuring consistency and performance. • Omnichannel initiatives (Linx OMS): expanded store inventory to e-commerce (higher availability, shorter delivery times) and implemented buy-online, pick-up in store. • Technical Lead for the Linx mobility project: smartphones as POS to speed service and enable sales on the floor — deployed in 4 stores in 2 months. • Technical Lead for expanding e-commerce inventory for in-store sales, enabling payment directly at the POS — delivered in 2 months. Stacks: PL/SQL, Python, Node.js, Java, Apache NiFi.

Worked on commercial (trading) systems at Latin America’s largest sporting goods retailer. • Accountable for the legacy ERP supporting commercial processes, ensuring stability, evolution, and integration with corporate systems. Business Domain • Retail operations and KPIs. • Product management (lifecycle, catalog, hierarchies, assortment). • Pricing (analysis, rules, and automated decisioning). • Product allocation and advanced planning (data analysis and automation for decision-making). Technology & Engineering • Informix 4GL, PL/SQL, and Python. • Informix and Oracle databases (data modeling, query tuning, batch routines). • Integrations between ERP and satellite systems (reliable messaging, logging, and failure recovery). • Technical documentation, version control, and development standards. Results & Collaboration • Improved performance and reliability across critical ERP routines. • Reduced rework through solid requirements analysis and business-oriented testing. • Transparent engagement, productivity focus, and effective support for internal/external stakeholders.

• Analysis and development of applications in Informix 4GL within a software factory model (Financial/Insurance domain). • Batch routines optimization and performance tuning (processing time, resource usage, reliability). • Technical leadership of the development team: code reviews, architectural guidance, and mentoring. • Schedule and delivery management, aligning dependencies with partner teams. • Definition and adoption of engineering best practices (standardization, automation, quality). • Collaboration with business stakeholders for requirements gathering and end-to-end solution design. • Technical documentation and structured handover for deployment and operations. Stacks & practices: Informix 4GL, batch processing, performance tuning, requirements engineering, technical leadership, schedule management.

• Developed and maintained applications in Informix 4GL. • Worked with Informix, Oracle, and SQL Server databases. • Led requirements analysis and proposed end-to-end system improvements. • Business Domain • Logix ERP: core modules and cross-functional flows. • Manufacturing: material classification and requisition, production orders, production planning (MRP/PCP), and production reporting. • Procurement/Supply: receiving, inventory management, and purchasing. • Best Practices: • clear, effective communication with internal and external stakeholders. •adoption of programming best practices, standardization, and a strong focus on productivity.

MBA in software engineering. This MBA aims to propose an update on the new demands of software innovation today. The areas of study that will be covered in the course will be: • Software Process • Solution Development • Service oriented architecture • IT Management and Governance

Higher course focusing on Information Systems focusing on the following subjects: •Database • Database Programming (PL / SQL) • Programming Language (Structured and Object Oriented) •Software Engineering • Project Management (PMBOK) • Software Quality (CMMi Application) • T.I Governance (ITIL and CobIT) •Computer network •Operational systems

Higher degree at Santa Catarina State University with focus on systems analysis and development with the following specialties: • Programming logic (Structured and Object Oriented) •Data structure •Databases •Software Engineering • Finance •Accounting •Operational systems • Requirements Analysis

Technical Course focusing on: •Analysis and systems development • Computer Networks (CISCO Certification) •Software quality • Programming logic (Structured and Object Oriented) In order to obtain the degree of computer technician, the course conclusion paper was presented with the following theme: Materials Management Automation