Sr. Software Engineer, Integration (VMO)

About Role

• As a Sr. Software Engineer, Integration (VMO), you will be a senior technical contributor responsible for designing, building, and operating cloud-native integration services and APIs. This is a hands-on software engineering role focused on writing high-quality code and building distributed systems that integrate AppFolio’s products, data platforms, and enterprise applications.
• You will work closely with enterprise applications and finance teams to deliver API-first, event-driven architectures on AWS as the primary execution platform.

Responsibilities

• Design, build, and operate cloud-native microservices on AWS to support enterprise integrations and APIs.
• Write high-quality, production-grade software in Java, Kotlin, and/or Python, applying proven software engineering patterns and best practices.
• Architect and implement event-driven and asynchronous systems using messaging and streaming platforms (e.g., Kafka or AWS-native equivalents).
• Apply distributed systems and integration patterns (e.g., idempotency, retries, backpressure, eventual consistency) to build resilient services.
• Design API-first services that expose well-defined domain capabilities for product, data, and enterprise consumers.
• Build and operate large-scale data exports and ingestion pipelines, supporting batch and near-real-time use cases.
• Integrate with external SaaS platforms (Salesforce, Zuora Billing/RevPro, NetSuite, etc.) using custom-built services, APIs, and events.
• Design systems with strong emphasis on observability, fault tolerance, security, and operational excellence.
• Participate in architecture and design reviews, contributing to microservices and event driven architecture standards.
• Design and manage data persistence layers, selecting appropriate database technologies based on access patterns and scale.
• Drive DevOps best practices including CI/CD, infrastructure as code, and automated testing.

Must-Have Qualifications

• Bachelor’s degree in Computer Science or a related field.
• 5+ years of professional software engineering experience, primarily focused on backend and distributed systems.
• Strong proficiency in Java, Kotlin, and/or Python.
• Experience designing and operating microservices-based architectures in production.
• Hands-on experience with event-driven systems and asynchronous processing.
• Experience with queuing and messaging systems (e.g., message queues, pub/sub, streaming).
• Hands-on experience designing and building AWS-based systems.
• Experience with relational and NoSQL database technologies, including schema design, data modeling, and performance optimization.
• Solid understanding of software design patterns, integration patterns, and distributed data consistency models.
• Experience designing and operating data export and ingestion workflows.
• Proven experience delivering complex systems using Agile and modern SDLC practices.
• Strong communication and cross-functional collaboration skills.

Preferred Qualifications

• Experience with Kafka or equivalent streaming platforms.
• Experience with AWS-native messaging and data services (e.g., SNS/SQS, EventBridge, streaming, object storage).
• Experience building internal platforms or shared integration frameworks.
• Familiarity with data consistency, reconciliation, and recovery strategies across distributed systems.
• AWS certifications (Solutions Architect, Developer, or equivalent).