Deuna
Deuna2mo ago
USD 0–0/yr

Fullstack Staff Engineer

United States - San Francisco · San_francisco · San FranciscoJornada Completalead
EngineeringOtherFullstack Developer
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Quick Summary

Overview

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,

Technical Tools
EngineeringOtherFullstack Developer
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 https://www.deuna.com/ to learn more about us!

We are looking for a Staff Software Engineer – Fullstack to act as a senior technical leader across our engineering organization.

This is a high-impact individual contributor role, focused on driving architecture, setting technical direction, and solving complex, cross-team challenges. You will partner closely with Engineering, Product, and leadership to ensure our systems scale reliably as the business grows.

This role is not focused on people management — instead, you will operate as a technical authority and multiplier, influencing multiple teams and raising the overall engineering bar.


Responsibilities

~1 min read
  • Own and evolve the architecture of critical fullstack systems across frontend and backend.

  • Lead the design of scalable, high-performance, and resilient distributed systems.

  • Set and uphold engineering standards, best practices, and design principles.

  • Drive alignment across teams on architectural decisions and technical direction.

  • Contribute to high-impact areas of the codebase.

  • Write clean, maintainable, production-grade code.

  • Lead complex refactors and performance optimization efforts.

  • Conduct in-depth code reviews and mentor engineers through technical guidance.

  • Partner with Product and Engineering leaders to evaluate trade-offs across scalability, performance, cost, and security.

  • Design APIs, data models, and system interactions that support long-term growth.

  • Guide teams on handling edge cases, failure scenarios, and observability.

  • Identify system bottlenecks and drive scalable solutions.

  • Influence long-term technical strategy and roadmap.

  • Evaluate and introduce new technologies where they add meaningful value.

  • Improve monitoring, instrumentation, and system reliability practices.


  • Proven experience as a Staff, Principal, or Senior Software Engineer in fullstack environments.

  • Strong frontend expertise with:

  • Strong backend experience with:

  • Deep experience designing distributed systems and scalable APIs.

  • Strong fundamentals in:

    • Data structures and algorithms

    • System design and architecture

    • Design patterns and trade-offs

  • Hands-on experience with AWS and cloud-native architectures.

  • Experience with SQL and NoSQL databases.

  • Strong debugging, performance optimization, and refactoring skills.

  • Excellent communication skills, with the ability to influence technical decisions.

  • Fluent or native English (Spanish is a plus).


  • Nice to Have

    ~1 min read
    • Experience in payments, fintech, e-commerce, or transaction-heavy platforms.

    • Experience building high-availability, low-latency systems.

    • Familiarity with regulated environments (PCI-DSS, financial systems, etc.).

    Listing Details

    Posted
    February 11, 2026
    First seen
    March 26, 2026
    Last seen
    April 24, 2026

    Posting Health

    Days active
    28
    Repost count
    0
    Trust Level
    37%
    Scored at
    April 24, 2026

    Signal breakdown

    freshnesssource trustcontent trustemployer trust
    Deuna
    Deuna
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    DEUNA is a payment orchestration platform that provides a one-click checkout solution for e-commerce businesses in Latin America, aiming to increase conversion rates and reduce fraud.

    Employees
    125
    Founded
    2020
    Domain
    deuna.com
    View company profile
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    DeunaFullstack Staff EngineerUSD 0–0