Senior Staff, Software Development Engineer 5

Sorry, this job was removed at 08:12 p.m. (CST) on Tuesday, Aug 12, 2025
2 Locations
In-Office or Remote
158K-210K Annually
Fintech • Payments
The Role

This is a remote position; however, the candidate must reside within 30 miles of one of the following locations:  San Francisco Bay Area, CA, and Portland, ME.

About the Team/Role

We’re the Transact Global (TAG) team at WEX. 

TAG is an open-loop payment processing platform built from the ground up by an agile team. It is cloud-native and built primarily with Go, MongoDB, and Terraform. The TAG team is pushing the frontiers of payment technology and is in the process of continuing to operationalize and scale the product. 

 

Our team holds itself to a high standard and we collaborate closely with one another to ensure strong, reliable, and effective relationships all while maintaining a healthy work-life balance. We own our results and we take pride of ownership in everything we do. 

 

How you’ll make an impact

Changing the world isn’t easy, and we have a lot of work ahead of us. From new product features to automation, to creating and supporting microservices, we’ve got more work than we can handle and we’re looking for great people to come along for the ride. 

 

Culturally, you are 

●  A highly motivated technical leader who loves working on high-performing teams 

●  Collaborative, a solid communicator, and work well with your team and stakeholders 

●  Someone who cares deeply for team results, checks your ego at the door and takes pride in owning results 

●  A mentor who is capable and passionate at guiding the technical development of less experienced developers at the functional, component, and architectural levels 

●  A professional who can advocate strongly for positions and still be 100% behind team decisions even if they don’t go your way 

●  Are comfortable balancing the need to move fast with the realities of working in a highly regulated space like payments 

 

Technically, you 

●  Are passionate about writing code, with experience in multiple languages 

●  Are able to quickly learn business domains and strategy, as well as apply technical solutions  

●  Pick up new technology and languages, as well as switch between tech stacks with minimal fuss 

●  Are comfortable working on and leading others in development of back-end services, data stores, and infrastructure systems

●  Demonstrably able to rapidly design modern software architectures at virtually any scale using justifiable and strategic decisions 

●  Have substantial experience writing modern software deployed in the cloud 

●  Are comfortable with encryption, systems design, data modeling, modern API design, streaming architectures, and front-end frameworks 

●  Have technically led agile teams to deliver software iteratively 

●  Have experience in implementing continuous integration and delivery  

 

Experience you’ll bring

●  Have a BS in an engineering field OR can make us feel intensely confident that you don’t need one  

●  Have 10+ years of development experience 

●  Have 8+ years of experience developing internal/external web services 

●  Have 6+ years of experience writing well-formed unit, component, and integration tests and have an in-depth understanding of the test pyramid 

●  Have 4+ years of experience delivering streaming (e.g., Kafka) and other asynchronous architectures (e.g., RabbitMQ) 

●  Have experience in multiple cloud providers (e.g., AWS, Azure, GCP, Oracle, etc.) 

●  Have a significant and demonstrable working understanding of multiple modern web frameworks 

●  Have an in-depth working understanding of NoSQL, SQL, and other (e.g., graph) data stores and can practically apply them in solving business problems 

 

It would be nice if you 

●  Have an MS or other advanced degree in an engineering field 

●  Can show us one or more passion projects or open-source work you have contributed to in your own time 

●  Have experience with Golang, AWS, and Terraform 

●  Enjoy hanging out with your team

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: $158,000.00 - $210,000.00

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The Company
HQ: Portland, ME
4,900 Employees

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.

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