Staff Software Engineer, Backend & APIs
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 22h ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 58d ago
The date the source published, not the day we noticed it (2026-08-05). Last seen at its source 1h ago.
We have tracked this listing since 22 Sep 2026 (9 days). The employer's own board has carried it every time we have read it, most recently 1 hour ago.
Is it remote?
The listing says yes
The location field doesn't say remote, so our assessment is based on the title or the description. Read the listing before applying.
Who may apply?
United States
The description states no restriction of its own. This is the source's own tag.
Pay
$140.6k–173.1k/yr
Read out of the job description by us, not from a structured field. Shown in the posting's own currency and period; we never convert.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
-
workday employer's own board first seen 9d ago · last seen 1h ago
- location not stated
The listing
About the Team/Role
We're looking for a Staff Software Engineer with deep expertise in backend development to join our 10-4 by WEX team. You will play a key role in designing, developing, and operating highly scalable, secure, and resilient backend services that power our mobile and web applications. You will work closely with mobile, web, product, and platform engineering teams to deliver APIs and distributed systems that provide seamless customer experiences.
Our platform helps owner-operators and small fleets save money on fuel through one of the industry's largest fuel discount networks. The mobile application enables truck drivers to discover participating fuel locations, activate discounts, manage payment methods, view transaction history, and access real-time fuel pricing and savings. As a Staff Software Engineer, you'll build the backend services and APIs that power these experiences, ensuring they are secure, scalable, highly available, and capable of supporting a growing user base while delivering a reliable and seamless experience for drivers on the road.
How you’ll make an impact:
Design, develop, and maintain scalable, secure, and high-performance backend services using Java, Spring Boot, PostgreSQL, and REST APIs.
Architect and build distributed microservices that are resilient, observable, and easy to maintain.
Design REST APIs that enable seamless integration with mobile applications, web applications, and external partner systems.
Lead architecture and system design discussions, producing high-quality design documents and driving alignment across engineering teams.
Optimize database design, queries, indexing strategies, and transaction management to improve performance and scalability.
Develop comprehensive automated testing strategies, including unit, integration, contract, performance, and load testing.
Improve application reliability by implementing observability, logging, distributed tracing, health monitoring, and alerting.
Identify technical debt, scalability bottlenecks, and reliability risks, and drive continuous platform improvements.
Build and enhance CI/CD pipelines, deployment automation, infrastructure automation, and engineering productivity tools.
Partner closely with Product, Mobile, Web, Security, Infrastructure, and DevOps teams to deliver high-quality customer experiences.
Lead code reviews, mentor engineers, establish engineering best practices, and raise the overall quality bar across the organization.
Troubleshoot complex production issues, perform root cause analysis, implement corrective actions, and improve operational excellence.
Evaluate emerging technologies and architectural approaches, providing technical recommendations based on business and engineering needs.
Create and maintain technical documentation including architecture documents, API specifications, runbooks, operational guides, and readiness plans.
Design highly available services with appropriate resilience patterns including retries, circuit breakers, caching, rate limiting, and graceful degradation.
Drive cross-functional initiatives as a technical lead or Single-Threaded Owner (STO), helping unblock teams and ensuring successful delivery.
Gain hands-on experience with automation and AI-assisted software engineering solutions.
Experience you'll bring
Bachelor's degree in Computer Science, Software Engineering, or a related field.
8–10 years of professional software engineering experience.
Strong expertise in Java and Spring Boot for building enterprise-grade backend applications.
Experience designing and developing RESTful APIs and distributed microservices.
Strong understanding of object-oriented design, data structures, algorithms, and software design principles.
Experience with PostgreSQL or other relational databases, including schema design, query optimization, indexing, and transaction management.
Experience building scalable, secure, highly available, and fault-tolerant distributed systems.
Strong understanding of authentication, authorization, API security, OAuth2, JWT, and secure software development practices.
Experience with asynchronous messaging technologies such as Kafka, RabbitMQ, or similar event-driven platforms.
Familiarity with caching technologies such as Redis and distributed caching strategies.
Experience with CI/CD pipelines, automated testing, code quality tools, and modern software delivery practices.
Understanding of observability technologies including logging, metrics, tracing, monitoring, and alerting.
Experience collaborating with mobile engineering teams and designing APIs optimized for iOS and Android applications.
Excellent communication, collaboration, mentoring, and technical leadership skills.
Hands-on experience leveraging AI coding assistants and development tools (e.g., GitHub Copilot, Cursor, Claude) to accelerate software development, refactoring, and code generation.
Preferred Qualifications
Master's degree in Computer Science or Software Engineering.
10+ years of software engineering experience.
Experience with cloud-native application development using AWS, Kubernetes, Docker, and Terraform.
Experience with API Gateways, service mesh technologies, and cloud networking concepts.
Experience with event-driven architectures and distributed systems patterns.
Familiarity with OpenTelemetry, Grafana, Prometheus, or similar observability platforms.
Exposure to mobile application development (Android and/or iOS) with an understanding of mobile architecture, API consumption patterns, offline synchronization, and application performance considerations.
Experience leading technical initiatives across multiple engineering teams and mentoring senior engineers.