Sr. Software Engineer

Responsibilities

• Own the overarching quality strategy for Payments Acceptance, building automated guardrails so seamlessly into our pipelines that rigorous end-to-end validation happens automatically, without slowing down feature teams, accelerating release cycles.
• Architect and execute high-concurrency load, stress, and latency testing to stress-test payment pipelines under extreme transaction volumes. You own the mission of ensuring our platform never drops transactions or degrades in latency during peak periods..
• Actively integrate AI-assisted developer tools and agentic workflows into test creation, synthetic data generation, and automated edge-case analysis to multiply testing velocity. Build high performance emulators for external systems.
• Implement robust telemetry and telemetry-driven test environments using tools like Prometheus and Grafana to monitor system behavior under load, driving blameless post-mortems and proactive bug prevention.

Preferred

• Experience with tokenization, payment processing, or security products

BA/BS degree

• A knack for out-of-the-box thinking that thrives in a fast-paced startup environment
• Domain expertise in 3DS, Network Tokens, Account Updater, or payment gateway integrations.
• Experience with AI developer tools, LLM-generated test automation pipelines, or synthetic test data generation.
• Practical knowledge of compliance and cloud security constraints (PCI-DSS, SOC2).

Modern Tooling as Leverage

We value speed and impact. To ensure nothing slows you down, we arm you with a highly consistent modern stack (e.g. AWS, Kubernetes, Java, TypeScript, Python) and world-class AI-augmented SDLC tooling. We strip away the friction so you can focus on the problems that demand creativity and judgment.

Ownership of Outcomes

Scaling global payments infrastructure requires individuals who take personal ownership of outcomes from day one. We look for builders who combine high agency with deep strategic alignment; channeling their urgency and relentless iteration into what matters most.

Mission-Critical Accountability

We power payments infrastructure for global market leaders, making system trust and integrity our core deliverable. We don't treat compliance (PCI, SOC2, ISO27001), security patching, and platform maintenance as administrative overhead—we engineer them with first-class product discipline. In payments infrastructure, reliability is not background work, it’s part of what customers buy.

Learn More

See how our engineering practices drive trust and innovation in our official blog and our reliability practices

About the Role

As a Sr. Software Engineer, Payments Quality, you will serve as a key technical practitioner and quality champion on our Payments Engineering team. You will take ownership of setting, building, and enforcing world-class quality standards across our core payment systems. In this role, you will write software for robust AI-assisted quality strategies covering end-to-end automated regression suites and high-concurrency performance and load testing.

Working closely with feature development engineers, Tech Leads, and Product Management, you will ensure our mission-critical, high-throughput payment platform and applications operate with zero downtime and flawless accuracy. Rather than relying on manual QA or traditional top-down testing scripts, you will leverage AI-native engineering methodologies and integrate test automation across the entire SDLC. You will also be building emulators for external systems, such as card networks and other partner integrations. We are looking for hands-on builders who refuse to settle for the status quo, hate manual friction, and take immense pride in fortifying enterprise-grade financial systems for scalability, reliability, and security.

Drive Performance & Stress Testing

Pioneer AI-Native Software Engineering focused on Quality:

Cross-Functional Velocity & Mentorship

Partner with feature teams to build "Golden Paths" for automated testing, ensuring engineers can validate code rapidly with high confidence. Mentor team members on quality engineering best practices.

Ownership in Quality Engineering

5+ years of software engineering experience focusing on quality engineering, test automation framework design, and performance testing for complex, high-throughput distributed systems.

Automation & Scripting Mastery

Deep hands-on experience building automated test suites in Python or Typescript/Javascript, with a strong command of REST API testing and microservices validation.

Performance & Load Testing Depth

Proven track record designing and running performance, stress, and load tests at scale using tools like Locust, or k6.

CI/CD & Cloud-Native Toolchains

Direct experience embedding automated quality gates into modern CI/CD pipelines (GitHub Actions, GitOps) within containerized environments (Docker, Kubernetes/EKS) on public clouds (AWS).

Data & Messaging Validation

Experience testing event-driven architectures (Kafka, SQS) and relational/NoSQL databases, ensuring data consistency and transactional integrity under load.

High-Agency Mindset

An innate drive to eliminate manual friction, proactively seek out edge cases, and acquire whatever missing domain context is needed to solve complex quality challenges end-to-end.

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.

We're not about being in the office every day. We are about connection, collaboration, and the energy that comes from a great brainstorm, a team lunch, or celebrating a big win in person.

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

Equal Opportunity

We consider all applicants without regard to race, color, national origin, sex, age, religion, sexual orientation, gender identity, veteran status, marital status, physical or mental disability, or other protected classes under all applicable local, state, and federal laws and ordinances (AA/EOE/W/M/Vet/Disabled).

Qualified applicants with arrest and conviction records will be considered for this position in accordance with the San Francisco Fair Chance Ordinance.

Where We're Hiring

We are currently hiring in the following locations: Arizona, California, Colorado, Connecticut, Florida, Idaho, Illinois, Iowa, Michigan, Minnesota, New York, North Carolina, Ohio, Oregon, Pennsylvania, Texas, Utah, Virginia, Washington, Ontario (Canada), Alberta (Canada), and British Columbia (Canada).

VGS-283

A Note on Our Hiring Process