Sales Engineer

About DEUNA 🧡

DEUNA is a rapidly growing startup revolutionizing global commerce with ATHIA, our AI-powered orchestration and payments platform that helps large enterprises boost approval rates, reduce costs, and unlock new revenue. Built by the team behind DEUNA —the fastest-growing Commerce OS in Latin America—ATHIA combines payment intelligence, checkout optimization, and data orchestration in one powerful solution.
With deep integrations across 300+ PSPs and alternative payment methods, and over 20% of Mexico’s digital economy running through our platform, we simplify global payments through a single integration and centralized reconciliation.
We are a rapidly growing startup expanding into the U.S. to meet the urgent needs of large retailers, marketplaces, airlines, and QSRs. Join us to shape the future of payments! 🚀
Visit to learn more about us!

Role Profile

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Department: Customer Solutions

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Team: Sales Engineering

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Reports to: Head of Customer Solutions

We are seeking a Senior Sales Engineer who is ready to bridge the gap between complex technical architecture and strategic business value. This role is designed for a dedicated professional who thrives on solving the deep-seated "data silo" problems of enterprise merchants and is driven to evolve into a future leadership position. You will be the technical heart of our sales process, partnering with E-commerce, Financial, and Product executives to demonstrate how agentic intelligence solves fragmented data issues and optimizes cost structures.

Key Responsibilities

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Strategic Demos & Storytelling: Own the technical demo process, translating "agentic intelligence" into clear, execution-ready outputs for C-suite stakeholders.

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Value Engineering: Work with enterprise clients to quantify ROI by identifying hidden costs in manual data cleaning versus the growth potential of AI-driven optimization.

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Technical Discovery: Conduct deep-dives to uncover specific pain points, such as the lack of business context in off-the-shelf AI tools or constant firefighting in operational teams.

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Bespoke Presentations: Customize technical presentations and POCs that reflect the specific KPIs, goals, and operational nuances of the merchant.

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Pipeline & Project Management: Manage the technical stages of the sales pipeline, ensuring all cross-functional intelligence requirements are met for a seamless transition.

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Voice of the Customer: Act as a critical link between the field and the Product team, using on-the-ground experience to influence the development of our multi-agent systems and "Bespoke Strategists".

Mandatory Qualifications

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Industry Experience: 5+ years of experience in a Sales Engineering or Pre-Sales role specifically within the SaaS and Payments sectors.

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Language Proficiency: Native or professional fluency in both Spanish and English is required.

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Technical Acumen: Deep understanding of APIs and SFTP integrations, as well as no-code connections with major PSPs and acquirers such as Adyen, Braintree, and Fiserv.

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Enterprise Expertise: Proven track record of navigating complex sales cycles with large-scale, global enterprise clients.

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Value-Based Selling: Strong background in value engineering, with the ability to build business cases around cost-to-performance insights and revenue impact.

Preferred Attributes (Value Engineering & Growth)

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Benchmarking Proficiency: Ability to compare a merchant’s current performance against industry payments benchmarks to surface proactively identified opportunities.

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Operational Insight: Familiarity with the operational friction points of finance and tech teams, including chargeback data management and authorization outcomes.

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Scenario Simulation: Skilled in using analytics tools to perform scenario simulations and forecasting to prove potential gains in acceptance rates.

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Opportunity Detection: Expertise in building systems for high-impact opportunity detection