Senior Software Engineer - Payments Platform

Relha LLC; Austin (TX); Hybrid; USD 110,000 - 135,000; Full time

Benefits offered by this job

Paid Time Off

Medical, Dental and Life Insurance

401K plan

Job summary

Western Union is seeking a Senior Software Engineer for the Payments Platform to drive modernization across North America and LATAM. You will design, develop, and scale cloud-native services, APIs, and data solutions using Java, Spring Boot, and AWS, with emphasis on security, reliability, and observability.

The role collaborates with product and operations teams and leverages AI-assisted coding tools to accelerate delivery.

Qualifications

• 4+ years of software engineering experience with focus on security, reliability, scalability, observability, and operations.
• 4+ years building cloud-native applications and microservices using Java and Spring Boot.
• 3+ years developing on AWS with microservices and cloud-native architectures.
• 1+ years of experience with event-driven architectures.
• 1+ years working with cloud databases (PostgreSQL, Aurora, DynamoDB) and distributed caching (Redis, ElastiCache).
• Experience contributing to modernization, migration, or transformation initiatives.

Responsibilities

• Contribute to payment platform modernization across NA and LACA regions.
• Design, develop, test, and support applications, APIs, and platform services using AI-assisted engineering practices.
• Develop and modernize AWS-based microservices and cloud-native applications.
• Develop cloud-native data solutions using PostgreSQL, Aurora, DynamoDB.
• Implement telemetry, monitoring, and observability to improve platform health and user experience.
• Review AI-generated code for security, quality, and standards.

Skills

Java

Spring Boot

AWS

REST APIs

Event-driven

Tools

PostgreSQL

Aurora

DynamoDB

Redis

ElastiCache

Kafka

Job description

Senior Software Engineer - Payments Platform

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.

As a Senior Software Engineer at Western Union, you will play a key role in our platform modernization journey across North America (NA) and Latin America & Caribbean (LACA). Leveraging AI coding agents and modern engineering practices, you will design, develop, and enhance applications, internal tools, workflow automations, and platform capabilities that address customer, agent, operational, and business needs. This role focuses on delivering high-quality software solutions while applying engineering best practices, cloud technologies, and AI-assisted development to accelerate delivery and improve outcomes.

You will contribute to the modernization of legacy platforms into scalable, secure, cloud-native solutions by developing AWS microservices, cloud data solutions, distributed caching implementations, and event-driven services. Working closely with engineering teams, product managers, architects, and business stakeholders, you will help build reliable, high-performing platform capabilities that improve operational efficiency, support business growth, and enhance customer experiences across the region.

In this role, you will:

Contribute to payment platform modernization initiatives across North America (NA), Latin America & Caribbean (LACA) regions.

Design, develop, test, and support applications, workflow automations, internal tools, APIs, and platform services using AI-assisted engineering practices.

Develop and modernize services using Java, Spring Boot, APIs, event-driven architectures, and cloud-native design patterns.

Build and maintain AWS-based microservices and cloud-native applications that meet performance, reliability, and scalability requirements.

Develop and support cloud-native data solutions using PostgreSQL, Aurora, DynamoDB, and related technologies.

Implement and optimize distributed caching solutions using Redis, Valkey, ElastiCache, or similar technologies.

Collaborate with product, operations, architecture, risk, compliance, QA, and customer care teams to deliver solutions from requirements through production deployment.

Leverage AI-assisted development tools to improve software development, testing, documentation, and engineering productivity.

Implement telemetry, monitoring, and observability capabilities to improve platform health, reliability, and customer experience.

Review and validate AI-generated code to ensure adherence to security, quality, compliance, and engineering standards.

Participate in code reviews, technical design discussions, and architecture reviews.

Support continuous improvement initiatives by contributing reusable components, engineering standards, and best practices.

Mentor junior engineers and help foster a culture of collaboration, learning, and engineering excellence.

Basic Qualifications

4+ years of experience applying software engineering best practices with a focus on security, reliability, scalability, observability, and operational excellence.

4+ years of experience developing cloud-native applications and microservices using Java and Spring Boot.

3+ years of experience developing solutions on AWS (Azure or other cloud platforms), including microservices and cloud-native architectures.

1+ years of experience working with event-driven architectures.

1+ years of experience working with cloud databases (PostgreSQL, Aurora, DynamoDB) and distributed caching technologies (Redis, Valkey, ElastiCache).

Experience contributing to application modernization, cloud migration, or legacy transformation initiatives.

1+ years of experience working in Agile software development environments.

Preferred Qualifications

1+ years of experience with containerization, CI/CD pipelines, observability tools, and infrastructure automation.

Experience building highly available, scalable, and resilient distributed systems.

Hands-on experience using AI coding agents or AI-assisted development tools to improve engineering productivity and software delivery.

Experience developing RESTful APIs and event-driven services using Kafka or similar messaging platforms.

Experience in Payments, FinTech, Banking, Remittance, or other high-volume transaction processing environments.

Experience supporting multi-region or globally distributed platforms.

Understanding of cloud security, authentication, authorization, and secure software development practices.

Experience participating in platform modernization and cloud migration programs.

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.

You will also have access to short-term incentives, multiple health insurance options, accident and life insurance, and access to best-in-class development platforms, to name a few

(https://careers.westernunion.com/global-benefits/). Please see the location-specific benefits below and note that your Recruiter may share additional role-specific benefits during your interview process or in an offer of employment.

Your United States – Specific Benefits Include

Paid Time Off

Medical, Dental and Life Insurance

Tuition Assistance Program

Student Loan Repayment (below manager level only)

$0 Money Transfer Fee Discount Code – Quarterly

Recognition Program “Game Changers”

Employee Discount Program

Global Adoption Assistance

401K plan

For residents of Colorado, California, Connecticut, Delaware, Minnesota, and Pennsylvania: Please do not respond to any questions on this initial application that may seek age-identifying information such as age, date of birth, or dates of school attendance or graduation. You may also redact this information from any materials you submit during the application process. You will not be penalized for redacting or removing this information.

Annual base salary range is $110,000 - 135,000 USD per year. Total on-target compensation includes a base salary and short-term incentives that align with individual and company performance. Actual salaries will vary based on candidates’ qualifications, skills, and competencies.

As part of the application process, all applicants are required to take assessments (live/on-line). Western Union has partnered with a 3rd party provider to administer these tests. Applicants will need to provide their name and email address in order to process the assessments. If you have any questions, you may reach out to [emailprotected] .

We are passionate about honoring our employee's identity and fostering a feeling of belonging. Our commitment is to provide an inclusive culture that celebrates the unique backgrounds and perspectives of our global teams while reflecting the communities we serve. We do not discriminate based on race, color, national origin, religion, political affiliation, sex (including pregnancy), sexual orientation, gender identity, age, disability, marital status, or veteran status. The company will provide accommodation to applicants, including those with disabilities, during the recruitment process, following applicable laws.

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Estimated Job Posting End Date:

09-30-2026

This application window is a good-faith estimate of the time that this posting will remain open. This posting will be promptly updated if the deadline is extended or the role is filled.