Senior Java Developer – Acquiring and Payments

Leega

Senior Java Developer designing and maintaining high-performance microservices. Join Leega in transforming payment solutions with innovative technology.

Posted 7/25/2026full-timeSão Paulo • 🇧🇷 BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates strong expertise in Java Development and the Spring Ecosystem, with a focus on Microservices Architecture and AWS Services. Capable of providing technical mentorship while ensuring compliance with information security standards such as PCI-DSS.

Highest-signal resume keywords

Java Development (Version 11 or Higher)Spring Ecosystem (Spring Boot, Spring Cloud, Spring Data)Microservices ArchitectureAWS Services (EC2, Lambda, SQS, RDS, CloudWatch)Information Security Compliance (PCI-DSS)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Java DevelopmentSpring BootSpring CloudSpring DataMicroservices ArchitectureSQL Databases (PostgreSQL, Oracle)Payware AcquirerPayware IssuerISO 8583 MessagingAgile Methodologies (Scrum, Kanban)

Soft Skills

Technical SupportMentorshipKnowledge SharingProblem SolvingCollaboration

Tools & Technologies

AWS EC2AWS LambdaAWS SQSAWS RDSAWS CloudWatchNew RelicDatadogDynatrace

Industry Keywords

Acquiring and PaymentsTransactional FlowAuthorizationCaptureReversal

Tech Stack

Tools & technologies

AWSCloudEC2JavaOraclePostgresSpringSpring BootSpringBootSQL

About the role

Key responsibilities & impact

Develop, maintain and enhance high-performance microservices.
Work on resolving Level 2 and Level 3 incidents, performing complex diagnostics involving code, cloud infrastructure and acquiring business rules.
Ensure the integrity of integrations between Payware platforms and the company's other systems.
Propose continuous architectural improvements to reduce incidents, increase scalability and optimize performance in AWS and on-premises environments.
Document technical flows, integrations and business rules, promoting knowledge sharing across the team.
Provide technical support and mentorship to less experienced colleagues through coaching and knowledge sharing.

Requirements

What you’ll need

Strong experience in Java development (version 11 or higher).
Proficiency in the Spring ecosystem (Spring Boot, Spring Cloud and Spring Data).
Experience with microservices architecture.
Solid knowledge of acquiring and payments, including:
Transactional flow (authorization, capture and reversal);
ISO 8583 messaging.
Hands-on experience with AWS services, including:
EC2;
Lambda;
SQS;
RDS;
CloudWatch.
Advanced knowledge of SQL databases, preferably PostgreSQL and/or Oracle.
Experience with Payware Acquirer.
Knowledge of Payware Issuer.
Understanding of information security and compliance with PCI-DSS.
Experience with monitoring and observability tools (APM), such as New Relic, Datadog or Dynatrace.
Experience working with agile methodologies, such as Scrum and Kanban.

Benefits

Comp & perks

🏥 Porto Seguro Health Plan
🦷 Porto Seguro Dental Plan
💰 Profit Sharing (PLR)
👶 Childcare Assistance
🍽️ Alelo Meal and Food Vouchers
💻 Home Office Allowance
📚 Partnerships with Educational Institutions
🚀 Support for Certifications, including Cloud
🎁 Livelo Points
🏋️‍♂️ TotalPass
🧘‍♂️ Mindself