Staff Engineer - Payins
Team: Payins
Location: Barcelona, Madrid, Buenos Aires, Spain, Sao Paulo
Commitment: Full Time
Workplace Type: hybrid
We are looking for a highly skilled Staff Engineer to join our Payins team, which owns the end-to-end payments flow - from pre-transactional to post-transactional stages - across both internal and external applications.
In this role, you will be instrumental in designing and scaling the systems that power our Payins platform. The team is organized around three key areas: Core, Integrations, and End User Experience. You will contribute to building robust public APIs, defining business logic that directly impacts our merchants, integrating with payment providers across multiple countries to unify their capabilities into a seamless experience, and enhancing user-facing solutions such as checkouts and frontend payment experiences.
Working closely with cross-functional teams, you will ensure our systems are scalable, reliable, and optimized for performance in a complex and high-throughput environment. Your expertise in architecture and Java-based systems will be key to driving technical decisions and enabling the team to deliver high-quality solutions.
This role requires a strong product and systems mindset, as well as the ability to understand the full payment lifecycle and its impact on merchants and end users. You will play a critical role in shaping the future of our Payins platform and improving how payments are experienced across our ecosystem.
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.
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