Marlon Crevelaro
Marlon Crevelaro

Senior Sales Engineer

Open to offers · Member since 23 Oct 2026
Location
São Paulo, Brazil
Desired salary
from 70k USD/yearly
Work preference
Remote Only / Full Time
Experience level
Senior

About

Professional summary

I am a Senior Sales Engineer and Pre-Sales Solutions Engineer with more than 20 years of experience in enterprise IT and over 13 years focused on winning complex technical sales engagements. I specialize in infrastructure, cloud, cybersecurity, log management, network intelligence, and carrier-grade solutions.

I design, scope, and personally execute proof-of-concepts and pilots in customer environments. I define measurable success criteria, benchmark throughput and latency, analyze resource efficiency, and translate technical results into business value for technical teams and executive stakeholders.

I have worked with major financial services, energy, telecommunications, and government organizations across Brazil, Latin America, and Spain. My experience includes navigating strict SLAs, security architecture reviews, compliance requirements, long procurement processes, and multi-stakeholder enterprise sales cycles.

I am hands-on with Linux, containers, cloud platforms, networking, SIEM and log-management environments, performance engineering, and packet analysis. I am comfortable supporting customers from technical discovery through solution design, demonstrations, RFI/RFP responses, implementation, training, and post-sales adoption.

I collaborate closely with account executives, product, engineering, support, partners, and customer teams to drive technical wins, renewals, upsell, and cross-sell opportunities. I am fluent in English and Spanish, a native Portuguese speaker, and an experienced presenter at international technology and cybersecurity events.

I am currently based in São Paulo and work remotely on global engagements. I am planning to relocate to Spain in December 2026 and am available for travel of more than 30%.

Notice period: 1 month

Skills

36 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Marketing and Sales Tools

Experience

Career history

Senior Pre-Sales Engineer / Professional Services Engineer NXLog

Own the technical win for enterprise, financial services, energy, and government opportunities involving log management and SIEM log-collection software. Lead discovery, map product capabilities to technical and business challenges, and validate proposed solutions through demonstrations and hands-on proofs of concept.

Design, scope, and execute pilots in customer environments, including installation and configuration of agents and collectors on Linux and Windows. Define success criteria, measure throughput and resource efficiency for high-volume log pipelines, respond to RFIs and RFPs, partner with account executives on territory strategy, and deliver customer, partner, and colleague enablement.

Senior Professional Services Engineer / Pre-Sales Engineer Allot Communications

Delivered carrier-grade deployments and pre-sales engagements for tier-1 telecommunications operators across Brazil, Chile, Argentina, Peru, and Spain, including Telefónica, Claro, and Algar/CTBC. Supported mission-critical production networks with strict SLAs and formal acceptance processes.

Acted as Professional Services lead and Project Manager for Telefónica VIVO Brazil Network Secure, driving Allot-Huawei integration for virtualized security services at subscriber scale. Led performance and capacity engineering, technical presentations, workshops, demonstrations, HLD/LLD, SOW development, RFI/RFP responses, and partner enablement.

Senior Technical Support Engineer ARRIS Telecomunicações do Brasil

Resolved escalated technical incidents for broadband, cable, and CMTS network equipment through fault reproduction, system characterization, and root-cause analysis. Provided support both remotely and on customer sites.

Supported pre-sales activities by validating and demonstrating new product features to customers. Delivered localized technical training to help customers and teams adopt products effectively.

Systems Engineer - Pre-Sales & Post-Sales Vernet Comunicação de Dados

Served as pre-sales technical lead for enterprise, data-center, and service-provider accounts. Led product presentations, requirements discovery, competitive differentiation, proof-of-concept management, and technical analysis for RFP responses.

Designed, planned, and implemented post-sales customer solutions. Led system integrations, customer training, laboratory troubleshooting, and solution delivery for Brocade, A10 Networks, Silver Peak, and Allot technologies.

Senior Network Analyst Claro Brazil

Planned and maintained backbone, BGP, and CMTS infrastructure for a national provider of broadband, cable, IPTV, and VoIP services. Worked with Cisco, Huawei, Extreme, and ARRIS network technologies.

Led capacity planning and bandwidth provisioning activities as a CMTS subject-matter expert, helping maintain scalable and reliable network operations.

Education

Learning history

Faculdade de Campinas (FACAMP)

Bachelor's Degree, Computer Networks

Bachelor's Degree in Computer Networks.

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