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Automation & Controls Software Engineer
Enchanted Rock Management LLC
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The Automation & Controls Engineer develops, tests, deploys, and maintains control logic and software for ERock’s power generation and microgrid systems. The role focuses on PLC and RTAC…
Added 1 min ago
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Public Works Director
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Kilgore, TX
- $114,664 to $159,768 USD / year
Registered as Professional Engineer by the Texas Board of Professional Engineers if applicable
Added 6 mins ago
Sentinel - Principal / Sr Principal Systems Engineer - 19282
Northrop Grumman
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Sr Principal Systems Engineer - Wing Test Capability Lead - 20177
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Senior Applications Engineer
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- $68,307 to $102,460 USD / year
The Senior Applications Engineer plays a pivotal role in designing, developing, implementing, and maintaining advanced software solutions tailored for HawaiiUSA FCU. This position requires…
Added 8 mins ago
Senior AWS Cloud Engineer
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Des Moines, IA
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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 8 mins ago
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Workday Adaptive Planning Engineer
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- $65 to $75 USD / hour
Our client is seeking a Workday Adaptive Planning Engineer to design, build, and maintain financial planning and forecasting solutions. The role partners with FP&A, Accounting, and Finance…
Added 9 mins ago
IT Network Engineer Sr.
Ann & Robert H. Lurie Children's Hospital of Chicago
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Added 12 mins ago
Sr. Software Engineer, Training/Inference (C++)
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Sr. Software Engineer, Kernels/CUDA (C++)
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Deep low-level systems programming (C/C++/PTX/SASS)
Added 14 mins ago
IT Manufacturing Data Solutions Engineer
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The engineer works closely with Operations, Engineering, Quality, SAP, CAMSTAR and IT teams to understand manufacturing processes, integrate data from multiple systems, and deliver insights…
Added 14 mins ago
IT Controls Engineer
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The IT Controls Engineer supports the design, implementation, and continuous improvement of manufacturing control systems and operational technology across both Trivium manufacturing…
Added 15 mins ago
Automation Engineer
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Added 15 mins ago
Automation Engineer I/II (MES)
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Health Insurance, Dental Insurance, Vision Insurance – effective day one
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Senior Performance/Simulation/Application Engineer
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Principal Engineer, Automation Engineering -Aseptic Filling SME
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The Automation Engineer will serve as the subject matter expert (SME) for the integrated aseptic vial and syringe filling lines for Project Eagle in Wilson, North Carolina. This role…
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GE Vernova Nuclear Engineer - Stability Analysis 1
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M.S. Degree in Nuclear Engineering with experience in T/H modeling as applied to nuclear reactor systems
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Software Engineer
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…learning, machine learning, autonomous system control and decision systems, computer vision, signal analysis, and brain computer interfaces, for the Government and commercial industry.…
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Tunnel Ventilation Engineer- Kiewit Infrastructure Engineers
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Substation Physical Engineer - (South)
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We are looking for a Substation Physical Engineer to join our team. As an Career Substation Physical Engineer, candidates will have the opportunity to work on projects for electric…
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Substation Protection and Controls Engineer - (South)
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Mainframe Systems Engineer
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Sr. Project Controls Specialist
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…overhead and underground electric distribution for power delivery systems, gas distribution construction for gas systems, and turnkey solutions for a variety of water, sewer, and civil…

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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