Job Description:
IntroductionWEX is a global leader in financial technology solutions, simplifying complex payment ecosystems across Fleet, Corporate Payments, and Health & Benefits. For further details, do visit www.wexinc.com. We are driving a major technology transformation to modernize our platforms, accelerate innovation, and deliver exceptional customer experiences.
We are seeking a Staff Software Engineer (SDE-4) who can design and deliver scalable, secure, and modular systems that align with our technology stack. This role offers an opportunity to work with a team that handles the Electric Vehicle integrations within the broader WEX ecosystem.
The team builds modular and scalable micro-services leveraging modern technologies across the entire architecture which are highly available, easy to maintain, resilient enough, developer friendly and performant.
As a Level 4 Engineer, you will:
Lead design and development of full-stack solutions, with emphasis on event-driven micro-services, APIs, and data platforms.
Drive iterative modernization, helping decompose monoliths into shared, modular services.
Build reusable capabilities aligned with product-centric domain models.
Contribute to agentic architectures and intelligent automation that power seamless user experiences.
Collaborate with cross-functional teams to deliver measurable business outcomes, not just features.
Collaborate with partners to integrate a broad range of EV services with WEX
Mentor junior developers and promote best engineering practices.
Design, develop, test, and maintain cloud-ready micro-services and APIs.
Work with streaming data pipelines (Kafka, CDC) to enable real-time insights.
Implement platform-thinking approaches—build reusable, discoverable capabilities.
Ensure quality from the start through automated validation and CI/CD pipelines.
Deliver value iteratively, focusing on finishing and deploying features, not just starting them.
Partner with product and architecture teams to ensure systems are decoupled, scalable, and SaaS mature.
Use monitoring and feedback loops to drive data-informed improvements.
Tackle technical debt proactively, balancing modernization with customer value delivery.
Bachelor’s/Master’s degree in Computer Science and Engineering.
8+ years in backend/micro-services development (Java, Python, GoLang etc.)
Hands-on experience with Java and Java related frameworks.
Expertise in object oriented design and programming.
Strong problem solving skills in the software engineering domain.
Experience in working on modern backend micro-services architecture.
6+ years in building Restful APIs, exposing and consuming; experience with message broker and event streaming (Kafka).
Strong knowledge of SQL, relational and non relational databases.
Comfortable working with JSON, XML, YML and other interfacing file types.
Experience in Unix/Linux environments, scripting, and CI/CD pipelines.
Demonstrated ability to decompose systems into modular, reusable services.
Excellent communication and collaboration skills across distributed teams.
Experience with FinTech solutions or payments ecosystems.
Cloud experience (AWS preferred), containerization (Docker, Kubernetes).
Familiarity with modern UI frameworks (React, Angular, Vue.js).
Familiarity with Change Data Capture (CDC) tools.
Understanding of AI/ML integration in platforms and workflows.
Experience with large-scale transactions and highly available systems.
What Makes You a Great Fit
You embody our engineering principles: API-first, modular, iterative, data-driven.
You thrive in modernization work, making legacy systems more agile.
You value finishing and delivering over just starting.
You see engineering as a way to unlock business outcomes, not just write code.
You champion quality, automation, and reusability in everything you build.
WEX Inc. Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about WEX Inc. and has not been reviewed or approved by WEX Inc..
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Leave & Time Off Breadth — Leave offerings are portrayed as a standout, with generous PTO and additional paid time for volunteering. Time-off flexibility is also positioned as a meaningful part of the overall rewards experience.
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Retirement Support — Retirement benefits are presented as strong, including a 401(k) match that is described as competitive. This element appears to materially strengthen the total rewards package even when cash compensation feels less compelling.
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Strong & Reliable Incentives — Variable compensation is sometimes framed positively through bonuses and uncapped earning potential in sales-oriented roles. Stock options are also cited as an additional reward component that can improve perceived total compensation.
WEX Inc. Insights
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What We Do
We simplify complex payment systems for fleets, corporate payments, and healthcare—unlocking insights, opportunities, and efficiencies to give you greater control of your business. Powered by the belief that complex payment systems can be made simple, WEX (NYSE: WEX) is a leading financial technology service provider across a wide spectrum of sectors, including fleet, travel and healthcare. WEX operates in more than 10 countries and in more than 20 currencies through approximately 4,900 associates around the world. WEX fleet cards offer approximately 14 million vehicles exceptional payment security and control; our travel and corporate solutions business processes over $35 billion of purchase volume annually; and the WEX Health financial technology platform helps 343,000 employers and more than 28 million consumers better manage healthcare expenses.
