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About the Role

The Senior Software Architect will lead the design, development, and delivery of modern, cloud-native applications on AWS. This role serves as a hands-on technical leader responsible for end-to-end ownership of full-stack solutions, including application architecture, cloud infrastructure, AI-enabled capabilities, and production operations. The ideal candidate will partner with globally distributed engineering and business teams to deliver scalable, secure, and high-performing software solutions while driving architectural excellence and engineering best practices.

Responsibilities

Design, develop, and maintain full-stack applications using modern technologies including React, Next.js, TypeScript, Python, and Java.
Lead the architecture and implementation of scalable, cloud-native solutions across distributed systems and microservices environments.
Build and enhance AI-enabled product capabilities using Amazon Bedrock, retrieval-augmented generation (RAG), vector search, and related technologies.
Develop and maintain backend services, selecting the most appropriate technologies and frameworks for performance, scalability, and maintainability.
Design and implement REST and GraphQL APIs, ensuring clear service contracts and backward compatibility.
Build and support real-time application capabilities using WebSockets, Server-Sent Events (SSE), AppSync subscriptions, and event-driven messaging patterns.
Architect and operate event-driven solutions leveraging AWS services such as EventBridge, SNS/SQS, Kinesis, MSK, and Step Functions.
Design, deploy, and manage AWS infrastructure using Infrastructure-as-Code practices, including AWS CDK.
Build and maintain CI/CD pipelines, automating application deployments, testing, quality controls, and infrastructure provisioning.
Ensure application security, scalability, reliability, performance, and cost optimization across all solutions.
Drive operational excellence through system monitoring, observability, alerting, troubleshooting, and production support.
Review application and infrastructure designs, providing technical guidance and architectural oversight across engineering teams.
Partner with product, business, and engineering stakeholders to translate business requirements into effective technical solutions.
Mentor engineers, promote engineering best practices, and contribute to the overall technical growth of the organization.
Own services throughout their lifecycle, from initial design through production support and continuous improvement.

Requirements

Bachelor's degree in Computer Science, Engineering, or a related field with 8+ years of professional software engineering experience, or equivalent work experience.
5+ years of hands-on experience developing modern web applications using TypeScript, React, and Next.js.
3+ years of professional experience developing backend services using Python.
5+ years of experience designing, developing, and supporting enterprise-scale REST and GraphQL APIs.
5+ years of hands-on experience designing and implementing cloud-native solutions on AWS.
3+ years of experience using Infrastructure-as-Code solutions, preferably AWS CDK.
5+ years of experience building and operating microservices-based architectures in production environments.
3+ years of experience designing and implementing event-driven architectures using messaging and streaming technologies.
3+ years of experience developing and supporting real-time application capabilities, including WebSockets, SSE, or subscription-based architectures.
3+ years of experience building and maintaining CI/CD pipelines and automated deployment processes.
5+ years of experience applying software architecture principles, design patterns, distributed systems concepts, data structures, algorithms, and object-oriented design methodologies.
3+ years of experience working within Agile environments utilizing Test-Driven Development (TDD) and Continuous Integration/Continuous Delivery (CI/CD) practices.
3+ years of experience operating and supporting production systems with a focus on observability, monitoring, reliability, and operational excellence.
1+ years of experience building or integrating AI/ML-powered capabilities into enterprise or customer-facing applications.
Demonstrated experience leading complex technical initiatives and collaborating effectively across globally distributed engineering teams.
Strong communication skills with the ability to influence technical direction, communicate architectural decisions, and align stakeholders around engineering solutions.
Proven ability to assess business requirements and deliver scalable, secure, and innovative technology solutions aligned with organizational objectives.
3+ years of experience with AWS CDK and multi-environment cloud deployment strategies.
2+ years of experience building solutions using Amazon Bedrock, SageMaker, or comparable AI/ML platforms.
1+ years of experience implementing RAG architectures, vector search, embeddings, prompt engineering, or LLM optimization techniques.
3+ years of experience developing or modernizing Java-based enterprise applications.
3+ years of experience designing and supporting large-scale event-driven, streaming, or real-time platforms.
3+ years of experience driving AWS performance tuning, cloud cost optimization, and security best practices.
Experience building and operating distributed systems, SaaS platforms, or multi-tenant applications at scale.
Experience within Financial Services, FinTech, Payments, or other highly regulated industries.
Prior experience serving as a technical lead, software architect, or mentor for engineering teams.
Experience developing customer-facing web and mobile applications using modern front-end frameworks and cloud-native architectures.

Skills

React
Next.js
TypeScript
Python
Java
AWS
Amazon Bedrock
RAG
Vector Search
REST APIs
GraphQL APIs
WebSockets
Server-Sent Events (SSE)
AppSync subscriptions
EventBridge
SNS/SQS
Kinesis
MSK
Step Functions
AWS CDK
CI/CD
Infrastructure-as-Code
Agile
Test-Driven Development (TDD)
Continuous Integration/Continuous Delivery (CI/CD)
Observability
Monitoring
Reliability
Operational Excellence
AI/ML
SageMaker
Embeddings
Prompt Engineering
LLM Optimization
Distributed Systems
Microservices
Software Architecture Principles
Design Patterns
Data Structures
Algorithms
Object-Oriented Design
Financial Services
FinTech
Payments

Location

Austin, TX

Work Type

HYBRID
full-time

Experience Level

Senior
8+ years of professional software engineering experience
5+ years of hands-on experience developing modern web applications
3+ years of professional experience developing backend services
5+ years of experience designing, developing, and supporting enterprise-scale REST and GraphQL APIs
5+ years of hands-on experience designing and implementing cloud-native solutions on AWS
3+ years of experience using Infrastructure-as-Code solutions
5+ years of experience building and operating microservices-based architectures
3+ years of experience designing and implementing event-driven architectures
3+ years of experience developing and supporting real-time application capabilities
3+ years of experience building and maintaining CI/CD pipelines
5+ years of experience applying software architecture principles
3+ years of experience working within Agile environments
3+ years of experience operating and supporting production systems
1+ years of experience building or integrating AI/ML-powered capabilities
3+ years of experience with AWS CDK
2+ years of experience building solutions using Amazon Bedrock, SageMaker, or comparable AI/ML platforms
1+ years of experience implementing RAG architectures
3+ years of experience developing or modernizing Java-based enterprise applications
3+ years of experience designing and supporting large-scale event-driven, streaming, or real-time platforms
3+ years of experience driving AWS performance tuning
Experience building and operating distributed systems
Prior experience serving as a technical lead, software architect, or mentor

Education Level

Bachelor's degree in Computer Science, Engineering, or a related field

Salary/Compensations

$195,000 – $220,000 USD per year

Benefits

Short-term incentives
Multiple health insurance options
Accident and life insurance
Access to best-in-class development platforms
Medical, Dental, Vision, and Life Insurance
Paid Time Off
Parental Leave
Global Adoption Assistance
401K Plan

About the Company

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.
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.

Equal Opportunity

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.