Software Engineer
Confirmed on the employer's own hiring board on Oct 28, 2026. First seen by Alion on Sep 10, 2026.
We're on a mission to transform how organizations manage workforce spending. For over a decade, PEX has built and evolved solutions that help small and medium-sized organizations manage payments-related activities more efficiently, nimbly, and competitively. Our platform serves tens of thousands of businesses and millions of cardholders, including municipalities, nonprofits, and humanitarian organizations. We are building the future of business expense management with advanced card controls, real-time visibility, and seamless reconciliation. We work each day to find new ways we can help our community of customers operate more efficiently.
You are a Senior Software Engineer who thrives at the intersection of Fintech and AI innovation. You’ll join at an exciting time-this isn’t a role where you’ll be handed tickets and told what to build. You are a customer-focused engineer with an ownership mentality and the ability to act independently to lead features through all stages of our SDLC. You are comfortable using AI to accelerate your own productivity and have a demonstrated ability to learn new AI frameworks, workflows, and tools. You thrive in environments where you collaborate from ideation through deployment and ship code that impacts hundreds of thousands of users.
Key Responsibilities
Product Engineering & AI Innovation
- Own features end-to-end-from design through rollout, including talking directly with customers to understand their problems and shape product decisions.
- Lead the integration of customer-facing AI or agentic workflows into our products to enhance our platform with the latest AI capabilities.
- Collaborate closely with product managers and designers to shape product direction and ideate on new features.
- Act as an end-to-end owner of features, ensuring they are scalable, innovative, and market-leading.
Technical Execution & Code Quality
- Contribute to high-quality code reviews, ensuring the team maintains a high bar for engineering excellence.
- Drive DevOps practices and production monitoring to ensure the stability and performance of our global platform.
- Utilize AI tools and frameworks to accelerate development cycles and improve overall team productivity.
- Ensure all features are supported through all stages of the SDLC, from initial inception to post-launch support.
Security, Compliance & Architecture
- Apply a deep understanding of security best practices and frameworks, such as OWASP, to every aspect of the development lifecycle.
- Work within our core stack (C#/.NET, Angular, SQL Server/NoSQL) to build secure, robust, and scalable fintech solutions.
- Partner with the broader engineering team to ensure system architecture meets or exceeds industry standards for data privacy and security.
Skills, Knowledge and Expertise
Experience: 5+ years of full-stack development experience, ideally within a B2B SaaS or Fintech environment.
AI Expertise: Experience integrating customer-facing AI or agentic workflows into production environments.
Security: Demonstrated knowledge of security frameworks and best practices (OWASP).
Communication / Customer Focus: Eager to work directly with customers from feature inception to support.
Benefits
Our People: Join an ego-free team of high-performers who value transparency, collaboration, and constant improvement.
Health: 80% Company-Subsidized Medical, Dental, & Vision.
Time Off: Flexible PTO + Federal Reserve Bank Holiday Schedule.
Finance: 401(k) with 3% Match.
Wellness: ClassPass Credits & Gym Membership Subsidies.
Growth: Sponsored Learning & Development Opportunities.
Location: Remote-First Culture.