Senior Platform Engineer — Scalable Backend Systems

Fountain; Municipio de Rincón de los Sauces; Presencial; ARS 178.643.000 - 223.304.000; Jornada completa

Descripción de la vacante

Fountain is rewriting frontline workforce management with a backend-first platform, delivering scalable, production-grade systems for a global customer base. You will focus on building foundational platforms powering the Fountain ecosystem and improving agentic capabilities and observability across high-traffic services.

You’ll join a compact platform squad and own architectural decisions, collaborating with product managers and designers.

Formación

• A minimum of five years in a professional engineering role, primarily focused on backend development, with a proven history of launching production-ready systems.
• Expert-level systems design with strong architectural judgment and ability to re-engineer misaligned systems.
• Excellent discernment for trade-offs across APIs, UX, and code; ability to elevate standards across domains.
• Experience with agentic or LLM-based systems beyond consumer use, including building tooling that agents consume or evals for regressions.
• Initiative; ships impactful work beyond explicit requests.
• Thrives in autonomous, ambiguous environments without a rigid ticket system.
• Excellent written communication; ability to work across time zones (EU, US, South Africa, India) and async collaboration.

Responsabilidades

• Ship platform capabilities across all customer and internal products
• Own performance, security, and stability for high-traffic production systems
• Enhance agentic systems, including coding agents and observability tools
• Lead architectural decisions for human and agentic interfaces
• Design reliable code, APIs, and contracts for humans and agents
• Collaborate with product and engineering teams to deliver customer impact
• Work autonomously with product managers and designers
• Identify problems, ship fixes, and own outcomes like an early-stage product team

Conocimientos

Backend development

Systems design

LLM-based / agentic systems

Performance, security, and scalability

Architectural decisions

Asynchronous collaboration

Observability tooling

Independent initiative

Herramientas

APIs

Observability tools

Monorepos

Descripción del empleo

Fountain is rewriting frontline workforce management with a backend-first platform, delivering scalable, production-grade systems for a global customer base. You will focus on building foundational platforms powering the Fountain ecosystem and improving agentic capabilities and observability across high-traffic services.

You’ll join a compact platform squad and own architectural decisions, collaborating with product managers and designers.