Order.co is an AI-powered procurement platform that connects purchasing, approvals, payments, and reporting in one intelligent system–so teams can place orders faster, cut manual work, and keep operations running smoothly.

Whether you’re managing one location or 100s, Order.co simplifies the entire procurement-to-payment process. Order.co AI sources the best vendors to deliver an average of 5% cash back on purchases, reduces invoice processing time by over 80%, and flags risks before they disrupt operations. Sync data with QuickBooks Online, NetSuite, Sage Intacct, and more to control spend in real time, close books faster, and forecast with confidence.

Set custom budgets and approvals by user, location, or GL code – without slowing teams down. With AI that learns from your unique buying history and guides every step of the journey, smarter purchasing has never been easier. Brands like Dolce & Gabbana, WeWork, [solidcore], and Hugo Boss rely on Order.co to unlock more float, control purchases at the item level, and realize hard-dollar ROI – unlike any other procurement or spend management platform on the market.

Founded in 2016 and headquartered in New York City, Order.co has raised $70M in funding from industry-leading investors like MIT, Stage 2 Capital, Rally Ventures, 645 Ventures, and more. Order.co has been recognized as a ‘Top 100 Fintech Company’ by The Financial Technology Report, ‘AI Procurement Platform of the Year 2025’ by RetailTech BreakThrough, and listed on Inc. 5000’s ‘Fastest Growing Companies’ for two years.

Order.co is the System of Action for the Office of the CFO, transforming the way businesses purchase and pay into an intuitive, B2C-like shopping experience. Order.co leverages embedded AI agents and embedded financial products to reinvent the way businesses connect with their vendors. End users enjoy a seamless, zero-training buying experience, while finance and procurement leaders gain a single platform to orchestrate how the business “should operate”. The result is an all-in-one solution that serves as a gravitational pull for spend and data, automating and eliminating procurement and finance workflows from requisition to reconciliation along the way. Order.co is on the cutting edge of B2B Agentic Commerce, poised to be the market leader in creating a more predictive, prescriptive, and personalized experience for users. Founded in 2016 and headquartered in New York City, Order.co oversees nearly half a billion in annualized spend across hundreds of customers like WeWork, SoulCycle, Lume, and [solidcore]. Order.co has raised $75M in funding from industry-leading investors like MIT, Stage 2 Capital, Rally Ventures, 645 Ventures, and more. Order.co has been proudly named a 50 to Watch by Spend Matters and a Best Place to Work by BuiltIn and Inc. Magazine. The Role As a Senior Software Engineer on the Payments team, you will own the software that moves real money for Order.co's customers — virtual-card issuance and authorization, bank connections, accounting integrations, recurring and consolidated invoicing, and ACH / RTP rails. You'll deliver complex features reliably, own subsystems end-to-end from initial design through rollout and post-release fixes, and mentor junior and mid-level engineers along the way. You'll be a credible technical voice in design discussions, challenge weak assumptions early, and help the team build software that is correct, maintainable, and secure — qualities that matter especially in code paths where a bug shows up on a customer's bank statement. Along the way, you'll grow your architectural judgment in money-movement systems and predictably ship work that moves the business forward.

Technical Execution & Code Ownership Independently design and implement complex, multi-part features from requirements to production Own subsystems, services, or critical components in the payments stack — for example, the internal financial ledger, the virtual-cards issuance and authorization lifecycle, bank connections, or the invoicing and auto-debit pipeline. The team routes questions to you for these areas Write clean, maintainable, production-ready code with consistent test coverage — money-movement code paths are held to a high test bar Navigate existing codebases with architectural discernment — identify sound patterns to build upon, recognize technical debt, and use AI tooling as an accelerant while applying your own judgment on correctness, security, and alignment with the system's direction Debug production issues effectively; seek first to understand — investigate evidence and identify root causes rather than applying band-aids, especially in webhook, retry, and reconciliation paths where a quick patch can hide a deeper consistency bug Design & Architecture Contribution Participate actively in design reviews; your designs regularly influence team-level architecture decisions Propose sound technical designs that account for scalability, performance, and reliability trade-offs — and for payments-specific concerns like idempotency, exactly-once semantics, reconciliation between internal state and vendor reports, and clean separation between authorization and capture Identify risks before they become incidents — surface edge cases, data consistency concerns, and failure modes during planning. In payments, that includes double-charge, double-credit, dropped webhook, and out-of-order event scenarios End-to-End Delivery & Ownership Scope and estimate work accurately; solve problems in order — break down epics into deliverable, independently reviewable units Deliver features end-to-end, including rollout coordination and post-release monitoring. Rollouts that affect real money rely on feature-flagging, dark-launching, reconciling, and watching dashboards before declaring "done" Communicate risks and blockers early — don't absorb uncertainty silently Review stories critically before committing: ensure they're appropriately broken down and that dependencies are well understood by the team Mentorship & Technical Leadership Mentor junior and mid-level engineers through code reviews, pairing, and direct feedback Provide high-quality, substantive code reviews — lead with humility, treat the author as a teammate to help, and catch what AI misses; teach others to do the same Teach best practices; your presence raises the quality of code around you Technical Influence Influence technical decisions through credibility, not just seniority Drive improvements in team practices — testing patterns, observability for money-movement flows, code organization, and the bar for test coverage in code paths that move real funds Champion quality and standards; push back on shortcuts that create long-term cost — especially in code that touches funds or credit Communication & Collaboration Explain technical decisions clearly to both technical and non-technical stakeholders Represent engineering well in product and cross-functional discussions, including with Finance, Operations, and Credit on reconciliation, credit-risk, and dispute-handling questions Translate vendor documentation (Stripe, Lithic, and others) into clear, scoped engineering work Approach all assignments with a security lens — actively look for vulnerabilities in your own code and in the code you review, with extra care in PII and PCI-adjacent paths

You are motivated by accountability — you own outcomes, not just tasks You are results-oriented and measure success by shipped, working software You are motivated by correctness in code that touches money — the consequences of a bug land on real customer balances, and you take that seriously You love helping people on your team grow and improve Writing tests is an integral part of your development process, not an afterthought You know how to design and build software incrementally — you don't need a complete spec to make progress Collaborating with the people around you to achieve a goal motivates you You are collaborative, open-minded, and actively developing your craft You are curious and pragmatic about AI-driven solutions — you apply them where they add real value and stay skeptical where they don't Familiarity with AI-assisted development tools — you understand how they work, where they help, and where they fail. Prior hands-on use is a plus; intellectual curiosity and the instinct to evaluate AI output critically are what matter Technical Skills Strong foundation in computer science fundamentals: data structures, algorithms, and system design Expertise in building production-grade applications and services using Ruby and Ruby on Rails Extensive experience with PostgreSQL and SQL-based data modeling, including query optimization and performance tuning Deep understanding of web application security, observability, and scalable system architecture Proven ability to design, build, and maintain secure, scalable, and well-documented APIs Experience building integrations with external systems — REST/GraphQL APIs, webhooks, event-driven pipelines, or third-party vendor connections Hands-on experience with at least one payment processor or card issuer (Stripe, Lithic, Adyen, Marqeta, Braintree, or equivalents), or comparable fintech vendor work Working familiarity with at least one of: double-entry ledger design, idempotency / exactly-once patterns for webhooks and money-movement, ACH / wire / card-network basics, or reconciliation against vendor reports Familiarity with AWS and other cloud platforms, including infrastructure as code and CI/CD pipelines Experience using AI coding assistants (e.g., Claude, GitHub Copilot) as part of your development workflow — not as a shortcut, but as a force multiplier; you provide them with appropriate context about constraints and conventions, critique AI output, recognize failure modes, and decide when to override What Great Looks Like A Senior Software Engineer on the Payments team who is thriving at this level demonstrates: Reliable delivery of complex work — consistently ships multi-part features on time with low defect rates Low defects in owned areas — proactively monitors and improves the quality of the systems they own; in payments specifically, that means incident-free quarters in code paths that move funds and clean reconciliation against vendor reports High trust from team and stakeholders — engineers, Finance, Operations, and Credit partners know they can count on you Measurable mentorship impact — engineers around you write better code because of your reviews and guidance "Someone we can depend on for the work that matters — especially the work that touches money."