Senior APIs and Integration Engineer

We are seeking a Senior Platform Engineer - Generative AI to manage revenue-generating commercial data flows and deliver specialized technical integration solutions across enterprise commercial platforms. Responsibilities Design, build, and configure enterprise integration flows on Software AG webMethods supporting Sales Orders, Purchase Orders, and QuotationsBuild and maintain secure REST/SOAP APIs connecting external CRM platforms with core enterprise SAP sales hubsConfigure SAP SD module integration mechanisms, RFCs, and IDoc/ALE pipelines for commercial transactionsUtilize AI-powered coding assistants and automated unit-testing scripts to validate transformation logic against complex Order-to-Cash functional specificationsCollaborate with functional consultants, test co-ordinators, and business process owners to rapidly triage, investigate, and resolve SIT and UAT defectsParticipate in migration rehearsals, validate commercial interface re-pointing, and support hypercare stabilization during go-liveUnit-test configured interfaces against end-to-end Order-to-Cash process flowsLeverage AI-assisted API refactoring tools and intelligent payload anomaly detection to ensure data fidelity and flawless wave execution Requirements 3+ years of experience in APIs and IntegrationProficiency in developing REST and SOAP APIs using webMethods Integration Server and API GatewayUnderstanding of Order-to-Cash (O2C) business processes, commercial document flows, and supply chain lifecycle transactionsFamiliarity with SAP Sales and Distribution (SD) modules, IDoc/ALE configurations, and RFC/BAPI mappingExperience integrating enterprise CRM platforms, specifically Dynamics 365 APIs, with backend ERP systemsExperience leveraging AI-assisted mapping tools, automated test scripts, and intelligent payload validation platformsEnglish proficiency at B2 level or higher Nice to have Experience working on M&A IT carve-outs, corporate divestitures, or commercial system separation programsFamiliarity with enterprise integration inventories (Ardoq) and automated CI/CD deployment pipelinesCertifications in webMethods or cloud integration architectures We offer We gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.