Staff Engineer – Payments Performance We are looking for a highly skilled Staff Engineer to join our Payments Performance team. This team focuses on optimizing payment performance across multiple dimensions: improving conversion rates, maximizing take rate, and keeping fraud and operational costs under control while ensuring compliance.

Responsibilities Collaborate with technology leaders and the product team to understand department goals and requirements, translating them into technical solutions

Design, develop, and maintain high-quality Java applications and systems aligned with business objectives

Lead the technical architecture and design of Java-based projects, ensuring scalability, performance, and maintainability

Create scalable architecture systems for Java-based applications, considering future growth and evolving business needs

Optimize application performance by identifying and addressing areas for improvement, such as code optimization, database query optimization, and resource utilization

Troubleshoot design flaws and system bottlenecks to enhance application stability and performance

Perform validation tests to ensure the flexibility and scalability of the Java environment, making necessary adjustments as needed

Conduct comprehensive system performance tests to identify bottlenecks, assess system capacity, and fine-tune application performance

Generate and present detailed systems reports, including performance metrics, bottlenecks, and recommendations for improvements

Conduct code reviews and provide constructive feedback to maintain high standards of software development, ensuring code quality, readability, and adherence to best practices

Qualifications Bachelor's degree in software engineering or computer science





Minimum of 7 years of professional experience in Java development

Solid experience in Java application development and software architecture

In-depth knowledge of object-oriented design principles and design patterns

Ability to write clean, efficient, and readable code

Experience with cloud platforms such as AWS or GCP (desired)

Experience with Java development frameworks like Spring and Hibernate

Event-driven architecture design experience

High-level project management skills

Ability to solve complex software system issues

Good verbal and written communication skills

Being a team player, enjoying working with your own team and collaborating with other teams in the organization

Upper-intermediate written and spoken English proficiency

Well-versed in the software development life cycle

Experience with monitoring applications in production using telemetry tooling such as Newrelic, Datadog, Grafana + Prometheus, Dynatrace, CloudWatch, distributed logs like ELK, etc.

Benefits Flexibility: we have versátil schedules and are driven by performance

Fintech industry: work in a dynamic and ever-evolving environment, with plenty to build and boost your creativity

Referral bonus program: internal talents can refer ideal candidates and get rewarded

Social budget: monthly budget to chill out with your team (in person or remotely) and deepen your connections dLocal Houses: option to rent a house to spend one week anywhere in the world coworking with your team

Work style We focus on impact and productivity over fixed hours. Teams have flexible schedules and, depending on your role and location, you will combine self‐managed focus time with moments of in‐person connection in our collaboration hubs.

📌 Staff Engineer - Payments Performance (Barcelona)
🏢 dLocal
📍 Barcelona