API Integration Engineer

AppXite is a digital marketplace, CPQ and Billing platform for Telco, SaaS, Cloud and AI services enabling partners to build and monetize as-a-services offerings with flexible pricing models like Pay-Go, peak usage, reservations, pay per token, per outcome delivered or AI compute. Platform capabilities include pre-built vendor and catalog integrations with Microsoft, Google, AWS, Adobe, VMware and other world’s largest vendors. Our Platform has been recognized in the Canalys and Forester Tech Stack Reports as a featured platform in the B2B Ecosystem marketplace and integrations category. We have years of experience in the SaaS and software markets and long-term working relationships with the largest vendors in the world (e.g. Microsoft, IBM, AWS, Google, Adobe, Cisco etc.). Our platform enables the software and cloud service businesses of household names like Atea and Lenovo. About the role As an API Integration Engineer at AppXite, you will play a pivotal role in ensuring the highest level of integration success for our partner segments. Your focus will be on optimizing the effectiveness and efficiency of AppXite's vendor integrations, aiming to deliver an unparalleled purchasing experience and stable provisioning. Responsibilities Develop and maintain robust integrations between AppXite and external APIs (REST/GraphQL/SOAP), data pipelines, and webhooks. Implement event-based integrations using tools like message brokers (e.g., Kafka, RabbitMQ) or serverless/event-grid models (e.g., Azure Event Grid, Logic Apps). Collaborate with architects and product managers to define integration contracts, data mappings, and transformation logic. Build and maintain middleware connectors for enterprise systems like CRM, ERP, billing platforms, or vendor marketplaces. Ensure secure, scalable, and observable integration flows with proper logging, retries, and alerting mechanisms. Contribute to technical documentation, including integration specifications and flow diagrams. Work with QA to define test cases and mocks for end-to-end integration testing. Participate in agile sprints, code reviews, and team planning sessions. Requirements 3+ years of experience in software development, with a focus on system integrations or API/middleware development. Strong experience with RESTful APIs, OpenAPI/Swagger, JSON, and XML. Experience working with Azure services such as Logic Apps, Function Apps, Event Grid, and/or Service Bus. Knowledge of event-driven architectures and integration patterns (Pub/Sub, Webhooks, Retry Policies). Familiarity with API management tools (e.g., Azure API Management, Postman, SwaggerHub). Experience with version control (Git) and CI/CD pipelines. Nice to have Experience integrating with SaaS vendor platforms (Microsoft, Adobe, AWS, Salesforce, etc.). Familiarity with iPaaS solutions (e.g., MuleSoft, Boomi, Azure Data Factory). Background in enterprise system integration (ERP, CRM, billing systems). Understanding of security protocols (OAuth2, JWT, TLS) in integration contexts. Knowledge of data transformation and ETL principles. Remote-First Flexibility: Enjoy the freedom of a fully remote role, or choose to work from our Latvia office. Work With Global Tech Leaders: Collaborate on solutions used by some of the biggest names in the industry, including Adobe, AWS, Cisco, Google, IBM, Microsoft, Lenovo, and Liquid. Your work will help shape how these companies deliver services across the globe. Skilled, International Team: Work alongside experienced professionals in a collaborative, multicultural environment. We value technical excellence, clear communication, and mutual support. Professional Development: Advance your skills with access to Microsoft certifications and continuous learning opportunities tailored to your role. Time to Recharge: Enjoy four weeks of paid vacation per year, plus paid public holidays. Referral Rewards: Help us grow our team - our employee referral program recognizes and rewards your contributions. Join AppXite Platform Engineering team and work with a talented group of engineers building out next-generation technologies Seniority level Mid-senior level Employment type Contract Job function Engineering and Information Technology #J-18808-Ljbffr