Senior Backend Engineer
hireworks.io · Buenos Aires, Argentina · On-site
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About hireworks
hireworks is building a community of top talent in key international markets by unlocking unparalleled access to positions at leading U.S. based companies. As your employer, hireworks will ensure you have a seamless interview, onboarding, and employee experience - providing ongoing support and resources along the way. Established in 2023, hireworks is forging corp-to-corp relationships with leading U.S. based organizations looking to grow their teams with best-in-class talent around the world. Working with hireworks means unlocking access to a network of local peers and mentors and career opportunities through our client network.
About Our Client & The Engagement
Our client is a premier AI consulting group that builds serious, production-grade systems for companies ready to operationalize artificial intelligence across their business. They eschew gimmicks and prototypes, focusing instead on delivering custom AI that integrates seamlessly into operations to drive measurable results. Their work automates high-effort workflows, launches AI-powered product lines, and transforms internal data into structured, usable assets—ranging from custom-trained models to intelligent agents that reason across complex business logic. Their diverse clientele spans education, financial services, engineering, healthcare, and defense. This is an 8-month full-time engagement with the potential to become a permanent position
The Project
We are hiring several senior backend engineers across the build. The components differ in domain (data integration, audience segmentation, access and authorization, and communications), but the engineering profile is the same: senior Java engineers who design and operate large-scale, event-driven, distributed systems on a cloud-native stack. Placement onto a specific component is matched to your background. You won't be slotted into a feature factory: you'll drive architecture alongside the team and own services end to end.
Responsibilities
Design, build, and evolve core platform services, data models, and APIs
Build reliable, replayable, event-driven data and processing pipelines at scale
Drive architectural decisions on scalability, resiliency, security, and operability
Design delivery mechanisms and integrations for downstream consumers
Implement data governance, lineage, auditability, and regulatory compliance
Support multi-tenant isolation and regional data residency
Partner with product and engineering to define platform capabilities and roadmap
Support customer migrations from legacy systems into the new platform
Mentor engineers and contribute to technical leadership across the team
Ensure reliability, performance, observability, and operational excellence
Required Experience
5+ years as a backend or platform engineer (software developer or data engineer)
Strong expertise in Java
Experience building distributed systems at scale
Strong experience with event-driven architectures
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