Senior Backend Engineer: Scalable Java/Python Systems Remote

Acciona It; Municipio de Rincón de los Sauces; Remote; ARS 159,028,000 - 249,902,000; Full time

Benefits offered by this job

Company-provided laptop and equipment

Generous PTO and regional holidays

High ownership and autonomy

Job summary

Prometeo Talent is partnering with a US-based cybersecurity startup to recruit a Senior Backend Engineer. You will design, build, and maintain scalable backend services in Java and Python, owning features end-to-end and driving architectural decisions in a fast-paced startup setting.

The role emphasizes distributed systems, AI-assisted development workflows, and close collaboration with product and engineering teams.

Qualifications

• 8+ years of software engineering or backend development experience.
• 5+ years of professional Python experience with production-grade systems.
• Strong experience with Java and distributed systems.
• Hands-on AI/LLM-based application development experience in production.
• Experience with databases, message queues, and data pipelines.
• Docker and Kubernetes in production environments.
• Ownership mindset and ability to thrive in startup environments.
• Advanced English level.

Responsibilities

• Design, build, and maintain scalable backend services using Java and Python.
• Develop distributed systems with databases, APIs, queues, and data pipelines.
• Own features end-to-end from design to monitoring and optimization.
• Build production-ready systems focusing on reliability and performance.
• Collaborate with product and engineering to translate requirements into solutions.
• Improve system performance, scalability, and operational efficiency.
• Leverage AI-assisted development tools to accelerate delivery while maintaining quality.
• Participate in architectural discussions and critical technical decisions.
• Continuously improve development processes, tooling, and standards.

Skills

Python

Java

AI/LLM development

Distributed systems

Databases & messaging

Docker & Kubernetes

Backend architecture

Ownership mindset

Tools

Kafka

RabbitMQ

Job description

At Prometeo Talent, we connect top-tier tech and engineering professionals with companies that are shaping the future. With a strong presence across America and Europe, we’re proud to be one of the highest-rated recruitment agencies in the market.

We’re currently partnering with a fast-growing US-based cybersecurity startup. The company is building innovative security solutions that help organizations strengthen their cybersecurity posture through intelligent, scalable, and modern technology. As an early-stage startup, you'll have the opportunity to work on complex technical challenges, contribute to product evolution, and make a direct impact on the growth and success of the platform.

About us

At Prometeo Talent, we connect top-tier tech and engineering professionals with companies that are shaping the future. With a strong presence across America and Europe, we’re proud to be one of the highest-rated recruitment agencies in the market.

We’re currently partnering with a fast-growing US-based cybersecurity startup. The company is building innovative security solutions that help organizations strengthen their cybersecurity posture through intelligent, scalable, and modern technology. As an early-stage startup, you'll have the opportunity to work on complex technical challenges, contribute to product evolution, and make a direct impact on the growth and success of the platform.

The Opportunity

We are looking for a Senior Backend Engineer who thrives in startup environments and enjoys building scalable systems from the ground up.

This role is ideal for engineers who combine deep backend expertise with a strong ownership mindset. You will play a key role in designing, building, and maintaining distributed systems while collaborating with a highly technical and fast-moving team.

The ideal candidate has extensive experience with Java and Python, enjoys solving complex engineering problems, and embraces AI-assisted development workflows to increase productivity without compromising quality.

Responsibilities

• Design, build, and maintain scalable backend services using Java and Python.
• Develop distributed systems involving databases, APIs, message queues, and data processing pipelines.
• Take full ownership of features and services throughout their lifecycle, from design and implementation to monitoring and optimization.
• Build production-ready systems with a strong focus on reliability, performance, and maintainability.
• Collaborate closely with product and engineering teams to translate business requirements into technical solutions.
• Improve system performance, scalability, and operational efficiency across the platform.
• Leverage AI-assisted development tools to accelerate delivery while ensuring code quality and engineering best practices.
• Participate in architectural discussions and contribute to key technical decisions as the company scales.
• Continuously improve development processes, tooling, and engineering standards.

Requirements

• 8+ years of experience in software engineering or backend development.
• 5+ professional experience with Python, building and maintaining production-grade backend systems.
• Strong experience with Java.
• Hands-on experience with AI/LLM-based application development (AI agents, agentic systems, or LLM-powered applications)
• Experience building AI-driven features, LLM integrations, or agentic workflows in production environments is highly preferred.
• Solid understanding of distributed systems, scalable architectures, and asynchronous processing.
• Experience working with databases, message queues, and data processing pipelines.
• Hands-on experience with Docker and Kubernetes in production environments.
• Proven experience building, maintaining, optimizing, and improving products after launch.
• Strong ownership mindset, autonomy, and ability to thrive in startup or fast-paced environments.
• Advanced English level

Nice to have

• Experience working in product-focused companies, owning products beyond the initial development phase.
• Experience in cybersecurity products or security-focused platforms.
• Experience with Kafka, RabbitMQ, or similar messaging systems.
• Experience building large-scale distributed data processing systems.
• Background in high-growth startups or scale-ups.
• Previous experience in large technology companies

What’s in it for You

100% remote work with flexibility to work from LATAM.

Join an early-stage cybersecurity startup where your work will directly impact the product and company growth.

Be part of an engineering culture that embraces modern AI-assisted development workflows.

Company-provided laptop and equipment.

Generous PTO and regional holidays.

High ownership, autonomy, and direct influence on technical decisions.