Software Development Engineer 4

Job Description

Introduction

WEX 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.

Scope of Role

As a Level 4 Engineer, you will

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Lead design and development of full-stack solutions, with emphasis on event-driven micro-services, APIs, and data platforms.

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Drive iterative modernization, helping decompose monoliths into shared, modular services.

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Build reusable capabilities aligned with product-centric domain models.

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Contribute to agentic architectures and intelligent automation that power seamless user experiences.

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Collaborate with cross-functional teams to deliver measurable business outcomes, not just features.

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Collaborate with partners to integrate a broad range of EV services with WEX

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Mentor junior developers and promote best engineering practices.

What You’ll Do

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Design, develop, test, and maintain cloud-ready micro-services and APIs.

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Work with streaming data pipelines (Kafka, CDC) to enable real-time insights.

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Implement platform-thinking approaches—build reusable, discoverable capabilities.

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Ensure quality from the start through automated validation and CI/CD pipelines.

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Deliver value iteratively, focusing on finishing and deploying features, not just starting them.

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Partner with product and architecture teams to ensure systems are decoupled, scalable, and SaaS mature.

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Use monitoring and feedback loops to drive data-informed improvements.

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Tackle technical debt proactively, balancing modernization with customer value delivery.

Required Qualifications

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Bachelor’s/Master’s degree in Computer Science and Engineering.

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8+ years in backend/micro-services development (Java, Python, GoLang etc.)

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Hands-on experience with Java and Java related frameworks.

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Expertise in object oriented design and programming.

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Strong problem solving skills in the software engineering domain.

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Experience in working on modern backend micro-services architecture.

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6+ years in building Restful APIs, exposing and consuming; experience with message broker and event streaming (Kafka).

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Strong knowledge of SQL, relational and non relational databases.

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Comfortable working with JSON, XML, YML and other interfacing file types.

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Experience in Unix/Linux environments, scripting, and CI/CD pipelines.

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Demonstrated ability to decompose systems into modular, reusable services.

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Excellent communication and collaboration skills across distributed teams.

Nice to Have

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Experience with FinTech solutions or payments ecosystems.

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Cloud experience (AWS preferred), containerization (Docker, Kubernetes).

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Familiarity with modern UI frameworks (React, Angular, Vue.js).

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Familiarity with Change Data Capture (CDC) tools.

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Understanding of AI/ML integration in platforms and workflows.

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Experience with large-scale transactions and highly available systems.

What Makes You a Great Fit

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You embody our engineering principles: API-first, modular, iterative, data-driven.

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You thrive in modernization work, making legacy systems more agile.

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You value finishing and delivering over just starting.

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You see engineering as a way to unlock business outcomes, not just write code.

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You champion quality, automation, and reusability in everything you build.