Senior Integration Engineer, Business Systems

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

The Role

The Business Systems Integration team powers the end-to-end systems that drive Block’s Procurement, Finance, Hardware supply chain, logistics, fulfillment, and after-sales service. We design, build, and manage the integrations and processes that connect all the different systems operations to scale efficiently and intelligently.

We are looking for an Information Systems Engineer who combines strong technical engineering skills with a deep domain knowledge in APIs and Integration. You will build, and enhance integrations, automations, and extensions across the various business systems our organization works with, including Zip, Oracle Fusion Cloud, Salesforce. You will collaborate closely with partner teams including procurement, supply chain, and finance teams to translate business needs into scalable, high-impact system solutions. This is a hands-on technical role ideal for someone who has experience in building complex APIs and Integrations at scale.

We want employees to reside where they feel most creative and productive. You will be part of a distributed team and are open to sharing and adjusting to typical working hours.

You Will

• Design integrations across enterprise business systems, including Zip, Salesforce, Oracle Cloud, Snowflake, Looker, and external partner systems using MuleSoft and Zip’s Integration iPaaS platform 
• Build Python-based tools and automations for data validation, API testing, and process optimization.
• Write and optimize SQL scripts for data extraction, transformation, reconciliation, and analytics.
• Collaborate with partner engineering and operations teams to ensure integration robustness, security, and scalability.
• Create and execute unit, integration, and regression tests for custom components and data flows.
• Monitor and support launched integrations and automations, using metrics and logs to continuously improve reliability and performance in Mulesoft as well as Zip iPaaS platform.
• Contribute to technical documentation, design reviews, and version control using GitHub and modern DevOps practices

You Have

• 8+ years architecting, designing, and scaling enterprise APIs and integrations in high-volume environments
• 5+ years of hands-on experience in one of the iPaaS Integration platforms, preferably MuleSoft
• 3+ years of recent hands-on experience with Python, Kotlin, Java or Go
• Hands-on experience integrating with enterprise business systems such as Oracle Fusion Cloud, Zip, Coupa, Salesforce, Workday or SAP
• Advanced proficiency in SQL and familiarity with data pipelines in Airflow, Fivetran, Prefect or Databricks
• Familiarity in working in Cloud platforms, preferably AWS, and services like S3, Lambda, SQS, RDS
• Solid understanding of software engineering best practices including code reviews, CI/CD pipelines, and documentation.
• Excellent communication and collaboration skills able to translate functional requirements from stakeholders into and technical design
• Proven track record of delivering complex integrations for procurement, finance, or supply chain systems
• Deep commitment to delivering quality products

Nice to Have

• Experience in one or more end-to-end procurement transformation projects using Zip or Coupa, including systems integration, integrations and process optimizations
• Certifications in Mulesoft, AWS
• Experience leveraging Cursor, Claude Code, Windsurf or any of the LLM based tools
• Experience or familiarity in building MCP servers, using Python or Typescript, for exposing tools and processes to Agentic workflows
• Experience leveraging AI/ML-based automations for automating technical and business processe

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