Senior Backend Engineer | Mobile (Ingeniero/a de Backend Senior) - Remote

Clara; México; A distancia; MXN 1,282,000 - 1,832,000; Jornada completa

Descripción de la vacante

A leading fintech company in Mexico is seeking a Senior Backend Developer to build and secure RESTful APIs, ensuring mobile-first design. Ideal candidates will have over 7 years of Java development experience, including API optimization for mobile, and a passion for creating scalable backend systems. The role offers a flexible work model and significant opportunities for growth.

Servicios

Competitive salary & robust stock ownership plan

100% flexible work model

Adaptable benefits

Opportunities for growth

Formación

• 7+ years of experience in Java development.
• Experience designing and implementing API services.
• Hands-on experience with secure API development.

Responsabilidades

• Build and secure RESTful APIs.
• Write efficient and well-tested code.
• Participate in code reviews and contribute to technical standards.

Conocimientos

Java (Spring/Spring Boot/Spring Batch)

RESTful API Development

Mobile Optimization

PostgreSQL

NoSQL (Redis)

AWS

Secure API Development

System Design

Analytical Skills

Herramientas

Swagger/OpenAPI

Docker

Kubernetes

Descripción del empleo

About the Role

Be responsible for developing and delivering backend services that power our mobile applications. As a core member of the mobile team, you’ll collaborate closely with iOS and Android engineers to ensure our APIs are mobile-first—designed for responsiveness, efficiency, and resilience in real-world network conditions. Your work will directly impact the performance and reliability of the mobile experience for our users.

Key Responsibilities

• Build and secure RESTful APIs with TLS encryption and modern auth protocols (OAuth2, JWT, etc.)
• Write efficient, clean, maintainable, and well-tested code with clear documentation.
• Participate in code reviews and contribute to the development of technical standards.

What We\'re Looking For

• 7+ years of experience in Java (Spring/Spring Boot/Spring Batch) development.
• Strong experience designing and implementing API services, including optimization for mobile clients—focused on expected response times, resilience to unstable or low-bandwidth connections, and efficient data handling to minimize consumption.
• Experience with swagger/OpenAPI to facilitate integration with mobile teams.
• Experience with relational databases (PostgreSQL), NoSQL databases (Redis), and data modeling.
• Experience with cloud platforms (AWS).
• Hands-on experience with secure API development using TLS, OAuth2, and enterprise-grade encryption methods
• Firm grasp of backend design principles, modularity, and maintainability
• Passion for solving complex problems and building systems that scale
• Experience with system design and the ability to architect scalable, high-availability solutions.
• Excellent analytical and problem-solving capabilities.

Nice to Have

• Previous experience in fintech or financial services
• Familiarity with AWS components (e.g., ECS, API Gateway, SQS, RDS, CloudWatch)
• Exposure to containerization and orchestration (Docker, Kubernetes)
• Understanding of enterprise data pipelines, messaging systems (Kafka, RabbitMQ)
• CI/CD tooling and DevOps best practices

Why Join Us

• Be a key player in shaping our core backend systems.
• Collaborate in a high-performance, remote-friendly environment.
• Room to innovate, learn, and lead technical initiatives from the ground up.

If you\'re ready to build backend systems that power real impact, we’d love to hear from you. Apply now.

The way we do things is as important as what we do

That is why we operate on a set of carefully-identified values. They are what we expect from ourselves and each other in our day-to-day.

We value

• Clarity - Open and direct communication
• Simplicity - Pare things down to the essential
• Ownership - We\'re all owners and act like it
• Pride - Make quality products we\'re proud of
• Always Be Changing (ABC) - Continuous self-improvement
• Inclusivity - Every voice counts; we value each other for our shared mission and contributions

We are

• Shaping business finances in Latin America
• Driven by our 6 core values
• Proud of our inclusive and caring culture
• Certified as Top LinkedIn Startup

What We offer

• Competitive salary & a robust stock ownership plan
• 100% flexible work model
• A set of benefits that are adaptable to your needs & way of life
• Opportunities for growth in a fast-paced environment
• A chance to shape B2B payments in Latin America and increase the region’s economic competitiveness