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Added 7 mins ago
Senior Full Stack Engineer
Vizient
Irving
Integrate applications with internal platforms, APIs, event streams, analytical data platforms, and external enterprise systems.
Added 8 mins ago
Software Engineer II
Amentum
Des Moines, IA
The Software Engineer II will perform full stack development with C# program, ReactJS, MVC, Linq, and rest API development in NET Core platform. This position is US remote teleworking…
Added 14 mins ago
Automation Engineer I/II (MES)
Novo Nordisk
Clayton, NC
…supply chains. Our newer Active Pharmaceutical Ingredients (API) facility in Clayton, NC sits on 825,000 square-feet of state-of-the-art equipment, and houses the Fermentation, Recovery and…
Added 15 mins ago
Software Engineer Principal
Syms Strategic Group, LLC (SSG)
Raleigh, NC
Syms Strategic Group (SSG) is seeking a talented Software Engineer Principal
Added 15 mins ago
Software Systems Engineer Principal
Syms Strategic Group, LLC (SSG)
Raleigh, NC
Syms Strategic Group (SSG) is seeking a talented Software Systems Engineer Principal
Added 29 mins ago
Lead Senior Cloud Platform Engineer
Stanley Martin Homes, LLC
Reston, VA
A day in the life of a Lead Senior Cloud Platform Engineer begins with partnering with application, data, AI, and infrastructure teams to ensure cloud platforms are enabling the secure,…
Added 58 mins ago
API Integration Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC, a Koniag Government Services company, is seeking an API Integration Engineer with a Secret security clearance to support TGS in supporting our government…
Added 58 mins ago
QA Automation Performance Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC, a Koniag Government Services company, is seeking a QA Automation Performance Engineer with a Secret security clearance to support TGS in supporting our…
Added 58 mins ago
Java/.net Modernization Engineer
Koniag Government Services
Washington, DC
…supporting our U.S. Army customer on a large-scale Army contracting systems modernization and automation program. Analyzes and decouples legacy Java and .NET components supporting solution…
Added 58 mins ago
QA Test Engineer
Koniag Government Services
Washington, DC
…supporting our U.S. Army customer on a large-scale Army contracting systems modernization and automation program. Plans and executes functional verification for solution capabilities. The…
Added 58 mins ago
Generative AI Software Engineer
Koniag Government Services
Washington, DC
…supporting our U.S. Army customer on a large-scale Army contracting systems modernization and automation program. Builds secure generative AI services and workflow integrations under…
Added 58 mins ago
Lead DevSecOps Appian Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC a Koniag Government Services company, is seeking a Lead DevSecOps Appian Engineer with a Top Secret security clearance to support TGS in supporting our…
Added 58 mins ago
Identity Federation & PKI Engineer (Hybrid)
Koniag Government Services
Washington, DC
The Identity Federation & PKI Engineer serves as a core technical expert responsible for supporting designs from the ICAM Lead, Entra and Okta developers implementing, securing, and…
Added 58 mins ago
Software Developer
Koniag Government Services
Huntsville, AL
…while driving strategic modernization. The selected senior engineer will operate across a sophisticated dual-track paradigm: ensuring uninterrupted operational readiness and fidelity of…
Added 58 mins ago
SharePoint Developer
Koniag Government Services
Washington, DC
Koniag Technology Solutions, Inc a Koniag Government Services company, is seeking a Principal Cloud Security Engineer with a Secret security clearance to support KTS and our government…
Added 58 mins ago
Zscaler Integration Engineer - Mid
Koniag Government Services
Washington, DC
Koniag Operations Services, LLC, a Koniag Government Services company, is seeking an experienced Zscaler Integration Engineer (Mid) to support enterprise network security operations and IT…
Added 58 mins ago
Palo Alto Integration Engineer - Mid
Koniag Government Services
Washington, DC
…Services company, is seeking an experienced Palo Alto Integration Engineer (Mid) to support enterprise network security operations and IT administrative and operational support services for…
Added 58 mins ago
Okta Identity Developer - Mid
Koniag Government Services
Washington, DC
The ideal candidate is a technically proficient and development-focused identity engineer with solid, hands-on experience developing custom Okta integrations, identity automation workflows,…
Added 58 mins ago
Sr Entra ID Integration Engineer
Koniag Government Services
Washington, DC
…Services company, is seeking an experienced Entra ID Integration Engineer (Senior) to support enterprise identity and access management operations and IT administrative and operational…
Added 58 mins ago
Senior Application Operations Engineer
Koniag Government Services
Washington, DC
Koniag IT Systems, LLC a Koniag Government Services company, is seeking a Senior Application Operations Engineer to support KITS and our government customer Washington, DC. The position is…
Added 58 mins ago
SaaS Platform Administrator
Koniag Government Services
Washington, DC
Koniag IT Systems, LLC a Koniag Government Services company, is seeking a SaaS Platform Administrator to support KITS and our government customer Washington, DC. The position is hybrid,…
Added 58 mins ago
Application Operations Analyst
Koniag Government Services
Washington, DC
Koniag IT Systems, LLC, a Koniag Government Services company, is seeking an Application Operations Analyst to support KITS and our government customer in Washington, DC.
Added 58 mins ago
Principal Cloud Architect
Koniag Government Services
Washington, DC
Design and implement security-driven multi-cloud enterprise architectures, including enterprise systems, service-oriented architectures (SOA), microservices, and interoperability frameworks.
Added 58 mins ago
Perplexity/AI Integration Lead
Koniag Government Services
Washington, DC
Koniag IT Systems LLC, a Koniag Government Services company, is seeking a Perplexity/AI Integration Lead to support KITS and our government customer in Washington, DC. The position is…
Added 58 mins ago
Automation Engineer
Koniag Government Services
Washington, DC
Koniag IT Systems, LLC, a Koniag Government Services company, is seeking an Automation Engineer to support KITS and our government customer in Washington, DC. The position is hybrid,…

Closed listing

WEX

Software Engineer (Apps) 4

Remote, United States

Pay Range: $140,600.00 - $173,100.00

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: Pay Range: $140,600.00 - $173,100.00
Experience: 10+ years of professional experience in software engineering.
Posting language: English
Posted: Nov 5, 2026

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Original job description

Archived listing. The details below describe a past opening.

About the Team/Role We are seeking a seasoned Sr. Software Engineer in the WEX Mobility Engineering organization. This role will sit in the Mobility team that caters to fleet management and mobility payments solutions for our large customers. Mobility development team spans across USA, Brazil, and India. Our Mobility systems provide SaaS and API solutions to various customers. WEX Mobility products enable credit issuance to fleet companies and their workers in the form of WEX or cobranded credit cards, usable at fueling stations and select other merchants. At WEX, we provide fleet managers and operators with fuel discounts, and flexibility to configure spend controls that restrict fleet members to use their cards at configured merchants, for configured amounts and velocity. This role includes large customer implementation/integration with TMS and support of products on the IBM iSeries platform. The role encompasses various responsibilities and required skills.

Technical Expertise - Engineer and implement software solutions tailored for the iSeries environment and possess deep knowledge of iSeries technologies, including RPG III,RPGILE, RPG IV, RPG400, CLP, DDS, C# and all IBM Utilities, SOAP, PHP, .NET web services and DB2 databases, which are crucial for effective development
Project Leadership - Senior engineers often lead technical initiatives, guiding teams through project lifecycles,
Mentorship - provide guidance and support to junior developers, fostering skill development and providing guidance on best practices and coding standards.
System Design - Responsibilities include architecting scalable and efficient systems and technical design documentation.
Collaboration - Senior engineers work closely with stakeholders, product managers and large customers to gather requirements and translate them into technical solutions, enhancing overall project success to ensure alignment with business goals.
Quality Assurance - Senior engineers are responsible for code reviews and implementing testing strategies to maintain software quality.

How you’ll make an impact:

Design, develop, and maintain robust, scalable, and high-performance object oriented code in our backend services.
Develop public REST APIs using Java and internal gRPC APIs for inter-service and inter-system communication.
Craft systems designs, lead design decisions, and drive alignment with other senior engineers.
Write automated unit tests, integration tests, end-to-end tests, concurrency tests, load/performance tests.
Analyze existing systems to identify bottlenecks, tech debt, and implement scalability, and stability improvements.
Implement automation for testing, monitoring, healing, and scaling applications, continuous integration and deployment to reduce time to market
Collaborate with cross-functional teams, including product managers, designers, and other engineers, to define and implement new features.
Conduct code reviews (comment, approve, seek revisions, merge), mentor junior and mid-level engineers, and actively promote engineering best practices.
Dive deep and troubleshoot complex issues, devise fixes, author root cause analysis documents, and ensure lasting performance and reliability.
Conduct objective and comparative analyses of competing technologies to advise the team of pros and cons of a technology solution
Maintain robust documentation (design docs, run books, change management docs, and readiness plans)
Provide live-site support for production applications by monitoring systems, ensuring rapid incident resolution, and driving continuous improvement.
Drive cross-team projects as a single-threaded-owner (STO) or tech lead, and actively unblock other engineers to make progress.
Support Mobility Major Account Implementations on IBM iSeries platform.

Experience you'll bring:

Bachelor’s degree in Computer Science or Software Engineering
10+ years of professional experience in software engineering.
Strong understanding of data structures and algorithms, object-oriented design, and problem-solving skills.
Expertise in designing and developing internet-scale services with scalability, availability, security, and reliability design tenets.
Excellent written and verbal communication skills, and a collaborative and empathetic mindset.
Proficiency in backend development, with proficiency expertise in Java or C#, and frameworks like SpringBoot, building and optimizing RESTful APIs, ODATA framework, and SQL
10+ years Deep Technical knowledge of iSeries technologies, including RPG III, RPGILE, RPG IV, RPG400, CLP, C++,DDS, all IBM Utilities, SOAP, PHP, .NET, web services and DB2 databases, which are crucial for effective development.
IBM iSeries communications, administration, SSL, SSH, TCP/IP, web services experience

Preferred Qualifications

Master’s degree in computer science or software engineering.
8 years of experience in software engineering.
Experience with event-driven architecture and tools like Kafka.
Experience working on card payments
Familiarity with cloud-native architecture (containerization using tools such as Docker and Kubernetes).
Awareness of API security and PCI DSS compliance requirements
Ability to work on existing codebase, contribute improvements, and adapt to legacy systems’ constraints.

The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section.

Pay Range: $140,600.00 - $173,100.00

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