Principal Software Engineer

The posting, as AvidXchange, Inc. wrote it

Principal Engineer, Payments

As a Principal Engineer on the Payments Technology and Engineering team, you'll set technical direction and design best-in-class solutions and do hands-on engineering for products that process millions of B2B payments. The role blends hands-on software development, architecture, coaching, and cross-functional partnership with Product, Architecture, Database, DevOps, Performance Engineering, and Operations — this is not a purely advisory position. You'll bring an AI-first mindset to everything from daily coding to system design, treating agentic AI tooling as a default part of the SDLC rather than an occasional aid. This is a senior individual-contributor role — you'll drive impact through system design, architecture, mentorship, and cross-team influence.

What You'll Do

Technical Leadership & Architecture

• Define and drive the Payments platform's technical approach, system design decisions, and engineering best practices.
• Advance platform scalability, reliability, and observability through API-first and event-driven design, distributed systems, cloud-native architecture, and fault-tolerant patterns (e.g., circuit breakers, retries with backoff, etc.).
• Partner with Solution and Enterprise Architects, and with developers, to determine optimal designs for architecture, efficiency, maintainability, and scalability across new and existing capabilities.
• Collaborate with Product, Business Operations, and Engineering leaders to align technical solutions with business needs and shape engineering roadmaps.

AI-First Engineering

• Adopt an agentic AI-based SDLC as the default approach to building software — using AI coding agents to scaffold, implement, test, and review code, not just as an occasional assist.
• Work fluently with AI harness / coding-agent tools (e.g., Cursor, Claude Code, VS Code with GitHub Copilot) as part of your daily workflow and help establish team-wide standards and best practices for their use.
• Champion AI-driven engineering practices — intelligent automation, predictive analytics, and self-healing systems — to improve development efficiency and system resilience.
• Identify and implement AI-based solutions for Payments product initiatives, from proof of concept through production.
• Model and promote an AI-first mindset across the team — evaluating new AI tooling, sharing what works, and pushing the team toward higher leverage.

Quality, Security & Delivery

• Solve problems, debug, and optimize code for performance and security, with attention to the compliance and regulatory standards that apply to payment processing (e.g., PCI-DSS).
• Own code quality and unit test coverage; partner with QA to design and review test cases so the platform meets customer expectations.
• Perform code reviews and approve pull requests, ensuring code follows documented standards and best practices.
• Own the health of the software delivery pipeline and guide the team in improving it.

Hands-On
[…]
PTO*

• 11 Holidays (8 company recognized & 3 floating holidays)
• 16 hours per year of paid Volunteer Time Off (VTO)
• Competitive Healthcare
• High Deductible Heath Plan Option that has $0 monthly premium for teammate-only coverage
• Dental Base Plan Coverage
• 100% AvidXchange paid Life Insurance
• 100% AvidXchange paid Long-Term Disability
• 100% AvidXchange paid Short-Term Disability
• Employee Assistance Program (EAP) - Provides counseling services, legal and financial consultations and health advocacy for Teammates and their eligible dependents
• Onsite Health Clinic with Atrium Health - available to Teammates and their eligible dependents
• 401(k) Match: 100% match on the first 3% of your salary, plus 50% match on the next 2%
• Parental Leave: 8 weeks 100% paid by AvidXchange**
• Eldercare Leave: 8 weeks at 100% pay to care for a qualifying family member***
• Discounts on Pet, Home, and Auto insurance
• Onsite gym fitness center, yoga studio, and basketball court
• Gym reimbursements for remote teammates up to $28/month
• Tuition Reimbursement up to the federal maximum of $5,250***
• Hybrid Workplace Flexibility
• Free parking

*Fully granted from beginning of year, pro-rated if hired mid-year

**Must be full-time for at least 3 months

***Must be full-time for at least one year

Equal Employment Opportunity

AvidXchange is an equal opportunity employer. AvidXchange is committed to equal employment opportunity in accordance with applicable federal, state, and local laws. AvidXchange will not discriminate against applicants for employment on any legally recognized basis. This includes, but is not limited to veteran status, race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, age and physical or mental disability.

Applicants must be currently authorized to work in the United States on a full-time basis. AvidXchange does not provide sponsorship for employment-based work visas for this position.