Senior Software Engineer, Java/Python

First Help Financial

. Design, develop, and maintain back-end applications using Java (Spring Boot), Python, AWS .

Posted 10/8/2026full-timeSão Paulo • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in back-end application development using Java and Python, with a strong focus on RESTful API design, database management, and AWS services. Proficient in implementing best practices for clean code and real-time data streaming.

Highest-signal resume keywords

Java DevelopmentPython DevelopmentRESTful API DesignAWS ServicesSQL/NoSQL Database Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaPythonSpring BootRESTful APISQLNoSQLAWS Kinesis Data StreamsJUnitMockitoClean Code

Soft Skills

Problem-SolvingDebuggingIndependent Work

Tools & Technologies

AWS EC2AWS S3AWS LambdaAWS API GatewayAWS SQSAWS RDSMongoDBRedisOracleDB

Industry Keywords

Back-End DevelopmentSoftware EngineeringComputer Science

Tech Stack

Tools & technologies

AWSEC2JavaJUnitMockitoMongoDBNoSQLPythonRedisSpringSpring BootSpringBootSQL

About the role

Key responsibilities & impact

Design, develop, and maintain back-end applications using Java (Spring Boot), Python, AWS
Work with both serverless and server-based applications
Build and manage RESTful APIs for data exchange between front-end and back-end systems
Design and optimize SQL/NoSQL databases
Implement and manage real-time data streaming using AWS Kinesis Data Streams (KDS)
Write clean, well-documented, and testable code
Work independently with minimal supervision in an ambiguous and fast-paced environment
Stay up-to-date with modern technologies and apply SOLID and Clean Code best practices
Report to the Engineering Manager

Requirements

What you’ll need

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field required
5+ years of professional back-end development experience
Strong proficiency in Java, Python or any JVM-based language
Solid understanding of RESTful API design and development
Experience with both SQL/NoSQL databases (MongoDB, Redis, OracleDB preferred)
Experience with AWS services (ex: EC2, S3, Lambda, API Gateway, SQS, RDS)
Experience with AWS Kinesis Data Streams (KDS)
Experience with testing tools like JUnit, unittest and mock tools like Mockito, MagicMock and so on
Excellent problem-solving and debugging skill

Benefits

Comp & perks

Generous salaries
Social activities
Monthly lunches
Robust employee recognition and talent development program
Healthy work-life balance
Career growth opportunities
Career planning and development
Company investment in employee development
Workplace accommodations for candidates with special needs