Integration Engineer

AppZen is the leader in autonomous spend-to-pay software. Its patented artificial intelligence accurately and efficiently processes information from thousands of data sources so that organizations can better understand enterprise spend at scale to make smarter business decisions. It seamlessly integrates with existing accounts payable, expense, and card workflows to read, understand, and make real-time decisions based on your unique spend profile, leading to faster processing times and fewer instances of fraud or wasteful spend. Global enterprises, including one-third of the Fortune 500, use AppZen’s invoice, expense, and card transaction solutions to replace manual finance processes and accelerate the speed and agility of their businesses. To learn more, visit us at .The Integration Engineer is responsible for building, implementing, and maintaining integrations between AppZen and our customers' enterprise systems. This is a hands-on technical role focused on delivering robust, scalable integration solutions. You will work directly with customer technical teams, write code, configure iPaaS platforms, troubleshoot production issues, and ensure data flows seamlessly across systems. If you enjoy rolling up your sleeves, solving complex integration puzzles, and seeing your work directly impact customers, this role is for you.In This Role You Will:Build and deploy integrations connecting AppZen with customer ERP, procurement, and financial systems using iPaaS platforms like Workato, MuleSoft, Boomi, or CeligoDevelop, test, and maintain RESTful APIs, SOAP web services, webhooks, and flat file-based integrations (CSV, XML, JSON)Write and maintain integration scripts and custom connectors using Python, JavaScript, or JavaConfigure and manage secure file transfers using SFTP, AS2, and cloud storage solutionsImplement and troubleshoot Single Sign-On configurations (SAML, OAuth 2.0, OIDC)Monitor integration jobs, investigate failures, and resolve production issues with urgencyWrite SQL queries for data validation, transformation, and troubleshootingBuild reusable Workato recipes, MuleSoft flows, or equivalent automation workflowsCreate and maintain technical documentation including integration specifications, data mappings, and runbooksParticipate in customer calls to gather requirements, demo solutions, and provide technical supportCollaborate with Product, Engineering, and Customer Success teams to improve integration capabilitiesPerform root cause analysis on integration failures and implement permanent fixesWhat You Will Bring to AppZen:5–8 years of hands-on experience building and supporting enterprise integrationsStrong proficiency with at least one iPaaS platform: Workato, MuleSoft Anypoint, Dell Boomi, Celigo, or SnapLogicSolid programming skills in Python, JavaScript, or Java—you write production-quality codeHands-on experience with RESTful API development and consumption, including authentication methods (API keys, OAuth, JWT)Working knowledge of SOAP web services and XML/XSLT transformationsExperience with SFTP, secure file handling, and batch processing workflowsFamiliarity with Finance and Procurement processes (Procure to Pay, Accounts Payable, Expenses) is a strong plusExposure to enterprise systems such as Workday, NetSuite, Coupa, Microsoft Dynamics, or similarExperience with cloud platforms (AWS, Azure, or GCP)—comfortable navigating S3, Lambda, API Gateway, or equivalent servicesStrong troubleshooting mindset—you dig into logs, trace data flows, and don't stop until you find the root causeTechnical Skills Required:Proficient in writing and debugging integration code in Python, JavaScript, or JavaHands-on experience building Workato recipes, MuleSoft flows, or Boomi processesStrong SQL skills for querying relational databases (PostgreSQL, MySQL, SQL Server)Familiarity with NoSQL databases (MongoDB, DynamoDB) is a plusExperience with EDI standards (cXML, ANSI X12) for supplier integrationsComfortable with API testing tools like Postman, Insomnia, or cURLUnderstanding of CI/CD practices and version control (Git)Experience with logging and monitoring tools (Splunk, Datadog, CloudWatch, or similar)Familiarity with message queues (Kafka, RabbitMQ, SQS) and event-driven patterns is a plusBonus Points For:Workato Automation Pro or MuleSoft Developer certificationExperience with Temporal or similar workflow orchestration frameworksPrior experience in a SaaS product company supporting customer integrationsExposure to data transformation tools like dbt or InformaticaWe are an equal opportunity employer and value diversity. All employment is decided on the basis of qualifications, merit and business need.