Staff Software Engineer

Western Union•Austin, TX

1d•Hybrid

About The Position

As a Staff Software Engineer - Integration Architect supporting North America (NA) and Latin America & Caribbean (LACA), you will lead the design and delivery of secure, scalable payment processor integrations. You will partner with business, product, operations, and external financial institutions to enable seamless money movement. The role uses cloud-native architectures, modern integration patterns, and AI-assisted engineering practices to define reusable solutions that accelerate partner onboarding, improve reliability and operational efficiency, and support regional business growth. Fluency in both English and Spanish is essential for collaborating with stakeholders and partners across NA and LACA. The position provides technical leadership for payment processor, banking, and financial institution integrations, while establishing integration frameworks, API standards, and engineering practices. You will develop AWS-based microservices and highly available, secure solutions using event-driven architectures and Kafka-based messaging. You will also lead modernization of legacy platforms, help teams adopt AI-assisted engineering tools, and advise regional stakeholders and partners. The position is hybrid, with an expectation to work from the office at least three days per week. Applicants must be currently authorized to work in the United States on a full-time basis; Western Union will not sponsor work visas for this position. The annual base salary range is $130,000–$155,000, with total on-target compensation also including short-term incentives aligned with individual and company performance.

Requirements

8+ years of experience designing and delivering enterprise integration solutions, APIs, and partner onboarding platforms.
5+ years of experience working with payment processors, financial institutions, banking integrations, remittance platforms, or payment networks.
6+ years of experience developing Java applications using Spring Boot, REST APIs, and microservices architectures.
Experience leading end-to-end integration programs, including solution design, certification testing, implementation, and production support.
Strong understanding of API integration patterns, service orchestration, payment workflows, transaction processing, and distributed systems.
Professional proficiency in both English and Spanish, including the ability to lead technical discussions, architecture reviews, and stakeholder engagements across NA and LACA.
Experience working directly with external partners, vendors, payment processors, or banking institutions.
2+ years of hands-on experience using AI coding agents or AI-assisted software development tools to accelerate engineering productivity and software delivery.
Experience collaborating with product, engineering, architecture, operations, risk, and compliance stakeholders in a large-scale enterprise environment.
Must be currently authorized to work in the United States on a full-time basis; work visa sponsorship is not available.

Nice To Haves

3+ years of experience serving as a Solution Architect, Integration Architect, or Technical Lead for enterprise-scale integrations.
Experience designing integration solutions for payment processors, card networks, banks, digital wallets, or remittance providers.
Experience with ISO 8583, ISO 20022, payment messaging standards, or similar financial transaction protocols.
Experience managing technical relationships with external partners across multiple countries and regulatory environments.
Experience in Payments, FinTech, Banking, Remittance, or another highly regulated industry.
Strong understanding of regional payment ecosystems and regulatory considerations within North America and Latin America.
Experience driving technical strategy and influencing architecture decisions across multiple teams, regions, and business domains.
Fluent verbal and written communication skills in both Spanish and English (also listed as required in the posting).

Responsibilities

Lead architecture, design, and delivery of scalable payment processor integrations across North America and Latin America & Caribbean.
Define and implement enterprise integration patterns, APIs, and reference architectures for rapid partner onboarding.
Partner with business, product, operations, compliance, and external stakeholders to deliver solutions aligned with business objectives.
Serve as technical lead for strategic payment processor, banking, and financial institution integrations.
Architect and develop AWS-based microservices using Java, Spring Boot, REST APIs, and cloud-native design principles.
Design secure, resilient, highly available integration solutions using event-driven architectures and Kafka-based messaging platforms.
Build solutions supporting payment processing, transaction routing, settlement, reconciliation, and partner enablement.
Establish reusable integration frameworks, API standards, and engineering best practices to improve delivery speed and scalability.
Collaborate with external partners on solution design, certification, testing, implementation, and production rollout.
Drive adoption of AI-assisted engineering tools to improve development productivity, testing, documentation, and operational excellence.
Review architectures and code for compliance with enterprise standards for security, scalability, reliability, and governance.
Lead modernization initiatives that transform legacy integration platforms into cloud-native, distributed solutions.
Monitor and optimize platform availability, latency, throughput, performance, and operational efficiency.
Provide technical leadership, mentorship, and architectural guidance across engineering teams and integration workstreams.
Advise regional stakeholders and partners, using English and Spanish fluency to drive successful outcomes across NA and LACA.