Sr. Software Engineer - DevEx

VGS is building the trust infrastructure for a new era of commerce. As commerce becomes agentic, payments are increasing dramatically in volume, speed, and complexity, and the companies driving that shift need a foundation they can fully trust.

That's where VGS comes in. We're the world's leader in payment tokenization, trusted by the most innovative AI and Fortune 500 companies, merchants, banks, and fintechs to power modern payments and agentic commerce. We store more than 9 billion tokens and process more than 10 billion monthly interactions, touching a third of all e-commerce.

Trusted Engineering That Matters

Engineering at VGS

VGS is building the platform powering agentic commerce and global payments infrastructure. VGS Engineering is the pillar that supports that vision. We create a platform that is an indispensable, ubiquitous component of our partners' payments and security infrastructure. We build and operate high-scale, reliable, and resilient systems that manage mission-critical payment data across the globe.

About the Role

We’re building payment infrastructure for a world where AI agents don’t just recommend, search, and summarize. They transact.

The Agentic API is creating the secure backend layer that enables trusted agents to initiate purchases, operate within user-approved mandates, retrieve scoped payment credentials, and complete transactions without exposing raw card data.

As a Senior Software Engineer, you’ll help build a new category of payment infrastructure at the intersection of AI, card networks, cryptography, and secure money movement, developing clean, reliable APIs for the next generation of commerce.

What You’ll Do

• Build Agentic Payment Infrastructure: Design and build Python 3.13+ and FastAPI services powering secure, production-critical agentic payment flows.
• Define the Core API Platform: Design APIs and domain models for card enrollment, agentic token provisioning, purchase intents, mandates, device attestation, OTP flows, confirmations, and cryptogram retrieval.
• Ensure Security, Reliability & Scale: Implement robust practices across security, scalability, availability, performance, and developer experience for sensitive payment and cryptographic workflows.
• Implement Deep Observability: Apply consistent patterns for error handling, traceability, structured logging, metrics, and distributed tracing using OpenTelemetry and Prometheus.
• Automate Platform Provisioning: Design extensible provisioning workflows using Kubernetes APIs and Custom Resource Definitions.
• Set the Quality Bar: Define rigorous unit, integration, acceptance, and end-to-end testing strategies for high-risk payment flows, including canary-safe production validation.
• Execute Key Technical Initiatives: Participate in technical design reviews, identify potential risks early, and deliver features reliably to production.
• Pioneer AI-Native Engineering: Apply AI-assisted development and agentic workflows across the SDLC to accelerate prototyping, testing, refactoring, investigation, and delivery while maintaining a high quality and security bar.
• Partner Across the Ecosystem: Collaborate with Product, Security, Infrastructure, Platform, and external card-network partners to translate evolving requirements into secure, scalable systems.

What You Bring

• Engineering Experience: 6+ years of experience delivering and maintaining complex distributed systems within production environments.
• AWS & Infrastructure-as-Code: Advanced proficiency in AWS ecosystems leveraging Terraform to build reproducible environments.
• Containerization & Orchestration: Strong, hands-on experience with Kubernetes (EKS), Docker, and GitOps workflows (Flux, Argo, GitHub Actions).
• Automation & Scripting: Strong coding skills in Python to automate infrastructure and build operational tools.
• Observability Expertise: Experience implementing Prometheus, Grafana, or OpenTelemetry at scale.
• Security & Networking Foundations: Solid understanding of cloud security, API Gateways, load balancing, and network isolation, viewing security as a fundamental engineering constraint, not an afterthought.

Additional Information

How We Work

At VGS, we embrace a remote-first philosophy because we believe flexibility leads to great work and a healthy work-life balance. That said, if you live within 30 miles of one of our office locations, you'll be on a hybrid schedule with some in-person time, because we know there's real value in coming together.

Our Benefits

Financial and retirement

• Competitive salary
• 401 (k) with a 4% match and immediate vesting (applies to US only)
• Early equity
• Internet Stipend
• Learning Stipend
• Office set-up stipend (applies to US only)

Health and Wellness

• Insurance (medical, dental, and vision)
• HSA/FSA Options
• Life and disability insurance
• Pet insurance

Vacation and time off

• Flexible PTO
• Paid national holidays
• Global parental leave program

Professional Development

• Promote from within
• Lunch and learns
• Team events and summits

Office life and perks

• Remote and hybrid opportunities
• Flexible working hours
• Weekly office lunches
• Employee discount platform