Full-Time
Staff Software Engineer
Backend & Application Programming Interfaces
Updated on 8/23/2026
Wex
5,001-10,000 employees
B2B platform for benefits, fleets, payments
Compensation Overview
$140.6k - $173.1k/yr
Remote in USA + 5 more
More locations: Salt Lake City, UT, USA | Boston, MA, USA | Seattle, WA, USA | San Francisco, CA, USA | Dallas, TX, USA
Remote
Bachelor's, Master's
 Software Engineering (1) |
|---|
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- A Bachelor's degree in Computer Science, Software Engineering, or a related field is required.
- 8–10 years of professional software engineering experience is required.
- Strong expertise in Java and Spring Boot for building enterprise-grade backend applications is required.
- Experience designing and developing RESTful APIs and distributed microservices is required.
- Strong understanding of object-oriented design, data structures, algorithms, and software design principles is required.
- Experience with PostgreSQL or other relational databases, including schema design, query optimization, indexing, and transaction management, is required.
- Experience building scalable, secure, highly available, and fault-tolerant distributed systems is required.
- Strong understanding of authentication, authorization, API security, OAuth2, JWT, and secure software development practices is required.
- Experience with asynchronous messaging technologies such as Kafka, RabbitMQ, or similar event-driven platforms is required.
- Familiarity with caching technologies such as Redis and distributed caching strategies is required.
- Experience with CI/CD pipelines, automated testing, code quality tools, and modern software delivery practices is required.
- Understanding of observability technologies including logging, metrics, tracing, monitoring, and alerting is required.
- Experience collaborating with mobile engineering teams and designing APIs optimized for iOS and Android applications is required.
- Hands-on experience leveraging AI coding assistants and development tools such as GitHub Copilot, Cursor, or Claude is required.
- Design, develop, and maintain scalable, secure, and high-performance backend services using Java, Spring Boot, PostgreSQL, and REST APIs.
- Architect and build resilient, observable, maintainable distributed microservices.
- Design REST APIs for integration with mobile applications, web applications, and external partner systems.
- Lead architecture and system design discussions, produce design documents, and drive alignment across engineering teams.
- Optimize database design, queries, indexing strategies, and transaction management to improve performance and scalability.
- Develop automated testing strategies covering unit, integration, contract, performance, and load testing.
- Implement observability, logging, distributed tracing, health monitoring, and alerting to improve application reliability.
- 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 with Product, Mobile, Web, Security, Infrastructure, and DevOps teams to deliver customer experiences.
- Lead code reviews, mentor engineers, establish engineering best practices, and raise engineering quality standards.
- Troubleshoot complex production issues, perform root cause analysis, implement corrective actions, and improve operational excellence.
- Evaluate emerging technologies and architectural approaches and provide technical recommendations based on business and engineering needs.
- Create and maintain architecture documents, API specifications, runbooks, operational guides, and readiness plans.
- Design highly available services using resilience patterns including retries, circuit breakers, caching, rate limiting, and graceful degradation.
- Drive cross-functional initiatives as a technical lead or Single-Threaded Owner, helping unblock teams and ensuring successful delivery.
- Gain hands-on experience with automation and AI-assisted software engineering solutions.
- A Master's degree in Computer Science or Software Engineering is preferred.
- 10+ years of software engineering experience is preferred.
- Experience with AWS, Kubernetes, Docker, and Terraform for cloud-native application development is preferred.
- Experience with API gateways, service mesh technologies, and cloud networking concepts is preferred.
- Experience with event-driven architectures and distributed systems patterns is preferred.
- Familiarity with OpenTelemetry, Grafana, Prometheus, or similar observability platforms is preferred.
- Exposure to Android and/or iOS application development, including mobile architecture, API consumption patterns, offline synchronization, and application performance considerations, is preferred.
- Experience leading technical initiatives across multiple engineering teams and mentoring senior engineers is preferred.
WEX is a global B2B platform that helps other businesses manage core operations across three areas: employee benefits, fleet management, and business payments. It provides tools such as health savings and flexible spending accounts, fuel cards and telematics for fleets, and automated payment workflows to simplify financial processes. Unlike providers that focus on a single product, WEX offers an integrated suite that covers benefits administration, fleet efficiency, and payments on one platform. Its goal is to reduce operating costs and improve efficiency for customers while supporting corporate social responsibility and an inclusive workplace.
Company Size
5,001-10,000
Company Stage
IPO
Headquarters
Portland, Oregon
Founded
1983
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Simplify's Take
What believers are saying
- Q2 2026 revenue rose 14.2% to $753.5 million, and guidance increased.
- July 2026 bought back $1 billion authorization supports EPS and shareholder returns.
- Standard Fleet and Octane partnerships deepen fleet software embedding and broaden cross-sell.
What critics are saying
- Impactive Capital forced a 2026 board fight, exposing strategic distrust and execution pressure.
- Supplier card-acceptance friction limits direct AP growth and weakens WEX's payment economics.
- An existential risk is Visa, ACH, and ERP platforms displacing WEX's closed-loop network.
What makes Wex unique
- WEX's 95% U.S. fuel-station network powers 30 million monthly fleet transactions.
- July 2026 SecureFuel combines telematics, vehicle data, and AI fraud prevention.
- WEX's direct AP and embedded payments expand beyond travel into workflow control.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Disability Insurance
Health Savings Account/Flexible Spending Account
Paid Vacation
Tuition Reimbursement
Growth & Insights and Company News
6 month growth
↑ 9%1 year growth
↑ 9%2 year growth
↑ 9%Western Union reported Q2 results as diversified financial services stocks showed mixed performance. The sector, which comprises companies offering specialised financial services outside traditional categories, saw revenues beat analyst estimates by 1.3% on average. WEX led the group with revenues of $753.5 million, up 14.2% year on year and exceeding expectations by 1.8%. The company posted the highest full-year guidance raise in the sector. Its shares rose 21.4% following the results and now trade at $188.94. Paymentus delivered the strongest quarter, reporting revenues of $360.7 million, up 28.8% year on year and beating estimates by 4.3%. The stock gained 18.4% after earnings and currently trades at $40.86. Western Union posted the weakest results amongst its peers. Share prices across the sector are up 2.1% on average since earnings.
WEX(R) + Octane: A more connected way to manage your fuel card program. Date: 7 Aug 2026 For most fuel distributors, fuel card programs and ERP systems have operated in parallel rather than together. Cards are issued and managed in one platform while customer accounts, pricing, and financials sit in another. Transaction data is handled manually, leaving teams to spend hours reconciling it. WEX and Octane Systems have partnered together to give operators a more connected, streamlined way to manage this. Its new integration connects WEX's fuel card program directly to Octane's ERP, allowing for card ordering and maintenance, transaction processing, and financial reporting into a single environment Why this matters for fuel operators Fuel card programs play a direct role in how fuel operators manage customer accounts, contract pricing, rebates, margins, reconciliation, and financial reporting. But in many businesses, fuel card activity still sits outside the core operational workflow. When that happens, the impact shows up quickly: * Transaction data needs to be checked, cleaned, or reworked before it aligns with customer accounts * Pricing and rebates aren't always applied consistently * Reporting lags behind what's actually happening * Reconciliation becomes more manual than it needs to be Individually, these aren't major issues, but together, they slow down how the business runs. How the integration works The integration brings WEX fuel card activity into Octane across three core areas: * Fuel card ordering and setup. New WEX cards can be created and issued directly within Octane, removing the need to move between systems during customer onboarding. * Ongoing card management. Card status, limits, and controls are maintained within the ERP, keeping operational responsibility in one place. * Transaction processing. WEX transaction data flows automatically into Octane, where it is matched to customer accounts and progressed through billing, settlement, and financial reporting. From point of sale through to billing and reporting, transactions move through a single system rather than being handled separately. Benefits across business functions WEX is a global financial technology and payments provider that specialises in fleet, fuel cards, and B2B payment solutions By integrating WEX fuel card data into Octane, transaction processing is no longer handled separately. By unifying fuel card data with broader ERP processes, distributors gain consistency in how transactions are priced, billed, and reported. Pricing structures, rebates, and customer agreements are applied uniformly across the business. Accounts receivable and payable remain aligned with transaction activity. Financial reporting reflects fuel card sales and costs in real time, rather than after a reconciliation cycle. Customer credit can also be managed more effectively, with a single view of credit across both fuel card and bulk fuel purchases. This enables operators to restrict card activity when customers exceed overall approved credit limits or are placed on hold, helping reduce risk and maintain stronger credit control. For operations and finance teams, the integration helps reduce the administrative effort associated with managing fuel card programs and improve the accuracy of customer-level reporting. Where this fits across different operators This integration supports different use cases, depending on your starting point. * For Octane clients: Existing Octane clients looking to introduce or expand a WEX fuel card program. * For WEX clients: Transactions can be brought into Octane to align with operational workflows and financial reporting. * For other customers: Operators reviewing their existing systems who want a market-leading ERP solution integrated with a leading fuel card program from day one. A more connected way to manage fuel card programs As fuel businesses grow, the number of systems involved often increases, along with the effort required to keep them aligned. With this latest WEX-Octane integration, your fuel card program is managed within a single workflow giving operators greater control, improved credit management, clearer visibility, and less administrative effort as your business grows. Speak to the Octane team to explore how the WEX integration could support your business
Lightspeed's revenue up 5.8% and other digital transactions news briefs from 7/30/26. * Point-of-sale platform Lightspeed Commerce Inc. narrowed its first-quarter loss to $2.4 million from $49.6 million a year prior. Lightspeed reported its fiscal first quarter earnings ended June 30 with $322.7 million in revenue, up 5.8% from $305 million a year ago. In 2025, Lightspeed embarked on a two-pronged POS-based plan to improve its performance. * Fundraise Up, a 9-year-old fundraising and checkout platform, introduced Tap to Donate, which allows staffers or volunteers to collect donations on a phone or iPad at events such as walkathons or luncheons. Nonprofits with early access to the feature reported a 24% increase in average gift size compared to devices previously used, according to Fundraise Up. * Embedded-payments provider Payabli has announced Amigo, an AI agent that the company says provides real-time transaction data and instant answers to payments questions. * Payments-technology developer WEX Inc. announced its SecureFuel platform is generally available to clients. Using fleet card transaction data and other AI models, the technology aims to stop unauthorized fuel purchases. * DNA Payments introduced DNA Engage, a service that allows consumers to scan a QR code shown on a POS terminal to access a receipt as well as promotions, surveys, social-media links, and offers. The technology is provided by Taployo, a provider of interactive digital receipts. * A Synchrony survey found that 50% of consumers have or will apply for financing options for their summer purchases. The survey had responses from 900 U.S. adult consumers.
WEX has launched SecureFuel, an AI-powered fraud prevention tool for its North American fleet customers. The system combines fleet card transaction data, real-time vehicle information, and AI models to identify and block unauthorised fuel purchases before approval. According to the National Association of Fleet Managers, fraud can cost businesses up to 12% of total fuel spend. SecureFuel leverages WEX's network covering approximately 95% of US fuel stations and processes around 30 million fleet transactions monthly. The tool helps fleet managers stop unauthorised purchases, reduce false card declines, and minimise manual investigations by confirming purchases using current vehicle location. Customers can activate SecureFuel through the WEXOnline platform using WEX telematics or supported third-party providers including Geotab. SecureFuel begins rolling out to eligible customers on 3 August.
WEX brings Standard Fleet's connected vehicle platform to fleet customers. This week's product launch with Standard Fleet's connected vehicle platform reflects WEX Venture Capital's strategy of turning startup innovation into customer solutions. Standard Fleet is now available to WEX fleet customers. July 29, 2026 2 min to read * WEX has integrated Standard Fleet's connected vehicle platform into its offerings for fleet customers. * This partnership is part of WEX Venture Capital's approach to leveraging startup technologies for innovative customer solutions. * The product launch enables WEX fleet customers to access enhanced connected vehicle capabilities. *Summarized by AI Eligible fleet customers of WEX, a global leader in intelligent payment solutions, can now access the Standard Fleet connected vehicle platform. With the launch, Standard Fleet's modern fleet management experience is available to WEX customers, including capabilities such as digital keys, remote vehicle access, and deviceless vehicle tracking. Ad Loading... Announced at the WEX Venture Capital Summit in Portland, Maine, the offering is a commercial solution that emerged from a previous WEX Venture Capital investment. Ad Loading... WEX said that as fleets transition to increasingly connected vehicles, operators are looking for simpler ways to manage vehicle data and services across mixed fleets. Standard Fleet's platform links directly with supported vehicle manufacturers, allowing eligible WEX customers to activate vehicle data and services without traditional aftermarket telematics installations. "Making Standard Fleet available through WEX gives customers a faster, simpler way to connect supported vehicles and begin using features like vehicle data and remote access," said Carlos Carriedo, chief operating officer, Americas Payments and Mobility at WEX. "It also demonstrates how WEX Venture Capital helps us identify emerging technologies and bring them to market faster, creating new opportunities to deliver offerings to customers that help build greater efficiencies to grow and scale their business." The Standard Fleet platform is available across more than 30 supported vehicle brands and can activate compatible vehicles quickly, with no installation appointments, vehicle downtime, or external devices required. "We're excited to bring device-free telematics to WEX fleet customers," said David Hodge, founder and CEO of Standard Fleet. "Together, we're helping fleets unlock the value of connected vehicle data often without the time, expense, or operational burden of installing aftermarket hardware." Providing Venture Capital Since 2023. Since launching in 2023, WEX Venture Capital has invested in more than 15 companies and funds developing technologies across fleet operations, mobility, fintech, and workflow automation. Ad Loading... WEX participated in Standard Fleet's Series A funding round in 2025, recognizing early the company's vision for software-defined fleet management. This recent Standard Fleet launch demonstrates how WEX Venture Capital helps translate strategic investments into customer-ready solutions that strengthen the WEX mobility platform. "WEX Venture Capital invests in companies that can solve meaningful challenges for our customers across the data, workflow, and fintech layers of the physical economy," said David Klein, head of WEX Venture Capital. "Our goal isn't just to invest in promising startups. It's also to bring their innovations to WEX customers across the physical economy. Standard Fleet is an example of that strategy in action."