Staff Software Engineer

Role Overview
At Western Union, we're more than a trusted name in global payments. We're moving beyond remittances, beyond cash, and beyond the expectations of our customers.
Our talented teams enable us to transform into a digital-first company, built on the strength of our global retail foundation and powered by next-generation payments and AI-enabled engineering practices. All this with the goal of helping people prosper.
Our customers inspire us to push boundaries and create services that make life easier, businesses more efficient, and communities stronger. Wherever you are in the world, we're committed to shaping the next generation of financial experiences.
Join us as we go beyond and be part of a team that's redefining what's possible.
Role Responsibilities
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, partnering with business, product, operations, and external financial institutions to enable seamless money movement. Leveraging cloud-native architectures, modern integration patterns, and AI-assisted engineering practices, you will define reusable solutions that accelerate partner onboarding, improve reliability and operational efficiency, and support business growth across the region. Fluency in both English and Spanish is essential to effectively collaborate with stakeholders and partners across NA and LACA.
Key responsibilities include:
Lead the architecture, design, and delivery of scalable payment processor integrations across North America (NA) and Latin America & Caribbean (LACA).
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 integration solutions aligned with business objectives.
Serve as the 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, and highly available integration solutions leveraging 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 that improve delivery speed and scalability.
Collaborate with external partners through solution design, certification, testing, implementation, and production rollout activities.
Drive adoption of AI-assisted engineering tools to improve development productivity, testing, documentation, and operational excellence.
Review architectures and code to ensure 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 performance, focusing on availability, latency, throughput, and operational efficiency.
Provide technical leadership, mentorship, and architectural guidance across engineering teams and integration workstreams.
Act as a trusted technical advisor for regional stakeholders and partners, leveraging fluency in English and Spanish to drive successful outcomes across NA and LACA.
Role Requirements
Applicants must be currently authorized to work in the United States on a full-time basis. Western Union will not sponsor applicants for work visas for this position.
Basic Qualifications
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, with the ability to lead technical discussions, architecture reviews, and stakeholder engagements across NA and LACA regions.
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.
Preferred Qualifications
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 working within Payments, FinTech, Banking, Remittance, or other highly regulated industries.
Strong understanding of regional payment ecosystems and regulatory considerations within North America and Latin America.
Fluent verbal and written communication skills in both Spanish and English (required).
Experience driving technical strategy and influencing architecture decisions across multiple teams, regions, and business domains.
Workplace Option
HYBRID – Western Union values in-person collaboration, problem solving, and ideation whenever possible. We believe this fosters common ways of working and supports how we execute initiatives for our customers. The expectation is to work from the office a minimum of three days a week.
BENEFITS AND OTHER DETAILS
Benefits
You will also have access to short-term incentives, multiple health insurance options, accident and life insurance, and access to best-in-class d