Senior Software Engineer - Java, Kotlin

Nir Yu; México; A distancia; MXN 900.000 - 1.500.000; Jornada completa

Descripción de la vacante

Nir Yu is seeking a Senior Software Engineer to design, build, and improve backend services and internal tooling that power our business. You will work across squads, owning meaningful slices of work end to end and contribute to production-ready services that are secure, scalable, and easy to extend.

You will influence architecture, standards, and delivery, collaborating with product, design, and engineering leadership to shape reliable systems and efficient internal tooling.

Formación

• 3+ years of software engineering experience.
• Experience building production-ready web apps and backend systems.
• Ability to influence architecture, standards, and delivery.
• Familiarity with JVM stack and multiple languages listed.

Responsabilidades

• Design, build, and ship backend services and internal tooling end to end.
• Write high-quality, secure, and testable code.
• Work across squads and influence technical direction.
• Review code, pair with teammates, and support onboarding.
• Deploy production-ready code to live environments.

Conocimientos

3+ years experience

Backend development

Architectural influence

Security-minded coding

Educación

Bachelor-like CS background or equivalent

Herramientas

Java

Kotlin

Elixir

Erlang

Ruby

JavaScript

TypeScript

Next.js

GraphQL

Kafka

AWS/Lambda

PostgreSQL

DynamoDB

Descripción del empleo

The Role:

We are hiring a Senior Software Engineer to build and improve the backend services and internal tooling that power our business. You will work across squads, starting wherever you are most needed, and own meaningful slices of work end to end.

In this role, you will design, build, and ship production-ready services and internal web applications that help our teams operate accurately and efficiently. You will partner closely with product, design, and engineering leadership, influence technical direction, and help shape the systems that keep our platform reliable, secure, and easy to extend.

Responsibilities:

• Design, build, and ship backend services and internal tooling that support our teams and customers, owning medium-to-large features end to end so teammates can understand, operate, and extend what you ship.
• Produce high-quality, performant, secure, and testable code that contributes to company-wide initiatives; handle data in accordance with company policy.
• Develop across our stack, including JVM (Java, Kotlin), Elixir, Ruby, React, TypeScript, GraphQL, Kafka, AWS/Lambda, PostgreSQL, DynamoDB, and related tooling.
• Influence technical decisions on architecture, standards, and delivery for the systems your team owns.
• Review pull requests and provide constructive feedback; pair with teammates and support onboarding when needed.
• Deploy user-facing and operator-facing code to production responsibly.
• Partner with product, engineering management, and stakeholders to clarify ambiguity and balance customer needs with technical constraints.
• Improve reliability and maintainability over time by using metrics and incidents to learn, strengthening observability, and leaving systems easier to run than you found them.

Requirements:

• 3+ years of software engineering experience.
• Experience building production-ready web applications and backend systems with reliability and security in mind.
• Experience influencing technical direction (architecture, standards, delivery), not only executing predefined tasks.
• Experience with Java, Kotlin, Elixir, Erlang, Ruby, JavaScript, Next.js, or another programming language; ready to work on JVM services (Java, Kotlin) when assignments require it.
• Familiarity with common engineering tools such as IDEs, RESTful APIs, Git repositories, TypeScript, version control software, and remote deployment tools.
• Familiarity with event-based architectures, event streaming (for example Kafka), database fundamentals, and GraphQL or comparable APIs.
• Comfort working with complex, contextual domain data (rules and validations that vary by category or context) and integrating with neighboring services.

Great-to-Have:

• Production experience with JVM services (Java, Kotlin), including common frameworks and tooling, and/or web applications using JavaScript, TypeScript, HTML, CSS, and React.
• Experience integrating LLMs or managed AI APIs into backend or internal tooling (for example enrichment, classification, attribution, or human-in-the-loop review).
• Experience building microservices integrated with neighboring teams or shared platforms, including eCommerce or marketplace platforms.
• Experience with dashboards, monitoring, or incident response in production, Python as production backend work alongside JVM or service-oriented systems, or a Bachelor of Computer Science degree or equivalent experience