Staff Engineer - Java

dLocal; Barcelona; Presencial; EUR 100.000 - 140.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible work

Fintech industry exposure

Referral bonus program

Work From Anywhere

Descripción de la vacante

dLocal is seeking a highly skilled Staff Engineer for the Payments Performance team in Barcelona. You will architect, build, and optimize Java-based systems handling routing, fraud prevention, and anomaly detection, collaborating with cross-functional teams to drive performance and efficiency across the platform.

You will design scalable, high-performance solutions, lead technical decisions, and contribute to the evolution of critical payment infrastructure.

Formación

• Bachelor’s degree in software engineering or computer science.
• 7+ years of professional Java development experience.
• Strong knowledge of Java applications and software architecture.
• Proficiency with object-oriented design and patterns.
• Ability to write clean, efficient, readable code.
• Experience with AWS or GCP cloud platforms (desired).
• Familiar with Spring and Hibernate frameworks.
• Experience with event-driven architecture and telemetry tooling.

Responsabilidades

• Collaborate with tech leaders and product to translate goals into technical solutions.
• Design, develop, and maintain high-quality Java applications and systems.
• Lead architecture and design of Java projects for scalability and performance.
• Create scalable architectures for Java applications with future growth in mind.
• Optimize performance through code, DB queries, and resource usage improvements.
• Troubleshoot bottlenecks to enhance stability and performance.
• Run validation tests to ensure flexibility and scalability of the Java stack.
• Conduct system performance tests and generate reports with actionable insights.
• Perform code reviews to maintain high standards of software quality.

Conocimientos

Java

Java application development

Software architecture

Object-oriented design

Clean code

AWS

GCP

Spring

Hibernate

Event-driven architecture

Project management

English communication

Educación

Bachelor’s degree in software engineering or computer science

Herramientas

Spring

Hibernate

New Relic

Datadog

Grafana

Prometheus

Dynatrace

CloudWatch

Descripción del empleo

Why Join dLocal?

dLocal is the financial infrastructure powering global commerce in the world's fastest-growing markets. The biggest companies in the world trust us to unlock growth in 60+ countries across emerging markets—moving money where others see complexity. We don't just process payments; we are architects of payment ecosystems and partners in our customers' expansion. You'll work alongside 1,300+ teammates from 40+ nationalities and tackle global challenges from day one.

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

As a Staff Engineer, you will play a key role in designing and evolving the systems that power critical areas such as payment routing, fraud prevention, and anomaly detection. This includes building and scaling systems that intelligently decide which processors handle each transaction, developing real-time fraud decisioning tools based on data and machine learning models, and enabling proactive detection of anomalies across business and operational metrics.

You will work closely with cross-functional teams to design robust, scalable, and high-performance systems, ensuring they meet both current and future needs. Your expertise in system design and architecture will be essential in driving technical decisions, improving our platform, and helping the team navigate complex challenges.

This role requires a strong strategic mindset and the ability to understand the broader impact of technical decisions, as you’ll be contributing directly to the evolution of one of the most critical areas of our platform.

What will I be doing?

• 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.

What skills do I need?

• 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.

Why Join dLocal?

dLocal is the financial infrastructure powering global commerce in the world's fastest-growing markets. The biggest companies in the world trust us to unlock growth in 60+ countries across emerging markets—moving money where others see complexity. We don't just process payments; we are architects of payment ecosystems and partners in our customers' expansion. You'll work alongside 1,300+ teammates from 40+ nationalities and tackle global challenges from day one.

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

As a Staff Engineer, you will play a key role in designing and evolving the systems that power critical areas such as payment routing, fraud prevention, and anomaly detection. This includes building and scaling systems that intelligently decide which processors handle each transaction, developing real-time fraud decisioning tools based on data and machine learning models, and enabling proactive detection of anomalies across business and operational metrics.

You will work closely with cross-functional teams to design robust, scalable, and high-performance systems, ensuring they meet both current and future needs. Your expertise in system design and architecture will be essential in driving technical decisions, improving our platform, and helping the team navigate complex challenges.

This role requires a strong strategic mindset and the ability to understand the broader impact of technical decisions, as you’ll be contributing directly to the evolution of one of the most critical areas of our platform.

What will I be doing?

• 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.

What skills do I need?

• 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.

What do we offer?

Besides the tailored benefits we have for each country, dLocal will help you thrive and go that extra mile by offering you:

• Flexibility in how you work: We focus on impact and productivity over fixed hours. This means our 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.
• Fintech industry: work in a dynamic and ever‑evolving environment, with plenty to build and boost your creativity.
• Referral bonus program: our internal talents are the best recruiters - refer someone ideal for a role and get rewarded.
• Work From Anywhere: Team members can work while traveling for up to 3 months every year.

What happens after you apply?

Our Talent Acquisition team is invested in creating the best candidate experience possible, so don’t worry, you will definitely hear from us. We will review your CV and keep you posted by email at every step of the process! Also, you can check out ourwebpage,Linkedin andYoutubefor more about dLocal!