Jefferson Lima

Quatro Pontos Grafica

Administrative Analyst | Financial Management, Tax Auditing & Process Automation

February 2026 — Present

Ribeirao Preto, SP

I work strategically at Quatro Pontos Grafica, leading the company's financial and tax management with focus on accuracy, compliance, and operational performance. I perform in-depth analysis of indicators, cash flow, financial feasibility, and profitability, supporting solid decisions aligned with business goals.

I am responsible for tax and accounting auditing, ensuring legal adherence, risk mitigation, and fiscal optimization. I develop structured internal control methodologies, review processes, and implement standards that increase data reliability and administrative efficiency.

I also integrate HR management routines, contributing to administrative processes, labor compliance, and organization of internal data and controls.

With strong experience in technology and automation, I develop custom solutions using VBA scripts, creation of SaaS control systems with Node.js, ReactJs, Oracle and MySQL databases, programming and high-performance tools, building control systems, dashboards, automated routines, and smart flows that increase productivity, reduce rework, and maximize results.

I continuously work on process optimization, mapping, analyzing, and redesigning workflows to generate scalability, operational transparency, and financial sustainability.

Telsign Consultoria em Telecom e TI

Telecommunications Technician | Field Team Lead

June 2023 — March 2026 (2 years and 10 months)

Sao Paulo, Brazil

I worked in the field across the mobile telephony and photovoltaic energy sectors, performing technical installation, commissioning, alignment, and operational handover of critical systems. I was also responsible for team coordination, technical reporting, and communication with clients and manufacturers.

Main Responsibilities and Deliverables:

• Installed, aligned, configured, and activated microwave radio links (6 GHz to 80 GHz) for mobile telephony networks.
• Worked with Ceragon, Huawei, Ericsson, and ZTE equipment, delivering fully operational links for telecom operators.
• Supported projects for Vivo, Claro, and TIM, with focus on technical quality, deadlines, and execution standards.
• Led and supervised field teams, assigning tasks, providing technical guidance, and supporting troubleshooting activities.
• Worked at the Pereira Barreto (EDP) plant on photovoltaic energy systems, with focus on Huawei solar inverter hardware.
• Collaborated directly with Huawei Chinese engineers, applying best practices for installation, operation, and maintenance.
• Prepared and submitted technical reports to the company and manufacturer, tracking progress and execution status.
• Built a Python automation to generate PDF reports, including image organization and automatic inverter name extraction from photos.

Stack: Microwave radio (6-80 GHz), Ceragon, Huawei, Ericsson, ZTE, Mobile Telephony, Photovoltaic Energy, Python (report automation), Team Leadership, NR10, NR10 SEP, NR18, NR35, NR06 and NR01.

FJN Tecnologia

Mid-Level Full Stack Developer

August 2025 — January 2026 (6 months)

Cuiaba, Mato Grosso, Brazil

I worked as a Mid-Level Full Stack Developer at FJN Tecnologia, focused on building, maintaining, and evolving production web applications. I contributed to two main projects: a corporate platform under a confidentiality agreement and the Barbearia Premium System, where I was a project partner in joint development.

Main responsibilities and projects:

• Corporate project (confidential): development and maintenance of an administrative web platform with management panels, forms, dashboards, integrations, and business workflows, without exposing contractual details.
• Barbearia Premium (partner and co-development): full SaaS for barbershop management in production, including admin panel, client panel, and modular REST API.
• Backend with Node.js and Express; frontends with Next.js, React, and TypeScript; Oracle in production; deployment on VPS with Nginx, PM2, and SSL.
• Modules delivered in Barbearia Premium: scheduling, finance (sales, revenue, expenses, and cash flow), inventory, CRM, help desk, RBAC, invoice issuance, and payment integrations.
• 100+ REST endpoints, modular architecture, audit logs, security (bcrypt and CORS), and continuous performance improvements.
• Collaboration with FJN and partner project technical teams, delivering evolutionary releases on time and to standards.

Stack: Node.js, Express, Next.js, React, TypeScript, Oracle, REST APIs, Tailwind CSS, Radix UI, MUI, Redux, Firebase, Mapbox, Nginx, PM2, VPS, RBAC, Focus NFe, and payment gateways.

Grupo Adriano Cobuccio

Administrative and Financial Process Analyst and BI Analyst

November 2022 — April 2023 (6 months)

Monte Belo, Minas Gerais, Brazil

At Grupo Adriano Cobuccio, I worked as a Process and BI Analyst focused on automation, continuous improvement, and controls that make data auditable and actionable for leadership, audit, and operations.

Key responsibilities and deliverables:

• Digital bank (launch phase): I structured processes from new account opening through user deposit verification, with clear audit trails for compliance and customer service.
• Automation and dashboards: I built Power BI dashboards and Microsoft Excel routines that turned overlooked errors into visible alerts, making corrections faster and more credible.
• Customer base scale-up: I contributed to growth from roughly 200 to 20,000 customers in two months, with controls that supported expansion without losing traceability.
• FIDC (investment fund): I automated data validation and settlement with Python (plus Excel and Java), fixing paid titles that still appeared open and delivering a designed process for compliance and speed.
• Return to the digital bank (Visa card): I modeled processes and systems to understand and control benefits and payment flows with the Visa network.

Stack: Power BI, Microsoft Excel, Python, Java, banking audit, FIDC, and Visa network processes.

Doce Paixao Lingerie

Administrative Financial Manager | Process and Financial Analyst

February 2016 — May 2021 (5 years 4 months)

Juruaia, Minas Gerais, Brazil

At Doce Paixao Lingerie, I built a five-year career path with four consecutive promotions, from administrative operations to full company management. I worked as a Process Analyst, Business Analyst, Financial Analyst, and Manager, integrating finance, HR, credit, controllership, and technology into a single value stream.

Career progression and key deliverables:

• Office Assistant: operational support with logistics (shipping, weighing, and freight quotes), invoice issuance, and delivery coordination.
• Administrative Assistant: cash closing, accounts receivable entry, review of credit sales authorizations, and internal client-by-client credit analysis.
• Administrator: cash and receivables management, credit analysis with commercial reference validation, P&L monitoring, and internal leadership in full ERP rollout and training (production, sales, invoicing, and technical sheets).
• Financial and HR Coordinator: leadership of the administrative team (3 employees), credit analysis and release, bank reconciliation, supplier negotiation, preventive collection, and default reduction (from 6% to 2.5%, then to 1.5%).
• Administrative Financial Manager: company-wide management (production, retail, and finance), leadership of 3 coordinators and 40+ employees, 5S implementation, and commercial and financial action plans during the pandemic.

Stack: ERP, Microsoft Excel, credit analysis, P&L, bank reconciliation, collections, 5S, team management, and process automation.