Senior Backend Developer, Java/Python

Extractta

Desenvolvedor Backend utilizando Java e Python em projetos de inteligência analítica e crédito. Foco em microservices e sistemas de missão crítica com alta volumetria.

Posted 7/22/2026full-timeRemote • BrasilSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Proficient in developing Java and Python applications, with a strong focus on RESTful APIs, microservices, and reactive architectures. Demonstrates expertise in modern design patterns, testing methodologies, and cloud technologies.

Highest-signal resume keywords

Java Application DevelopmentPython Application DevelopmentRESTful API DesignMicroservices ArchitectureAgile Methodologies

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

JavaPythonVert.xSpring FrameworkDesign PatternsTDDBDDGitMavenGradle

Tools & Technologies

AWSDockerKubernetesKafkaGrafana

Industry Keywords

Information SecurityInformation SystemsCredit ProductsAnti-FraudData Bureau Products

Tech Stack

Tools & technologies

AWSDjangoDockerDynamoDBFlaskGradleGrafanaJavaJUnitKafkaKubernetesMavenMicroservicesMockitoMongoDBNoSQLPythonRedisSplunkSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Develop Java applications using the Vert.x and Spring frameworks
Develop Python applications (versions 2.x and 3.x)
Build mission-critical, high-volume systems using modern solution architecture patterns and design patterns
Design and evolve RESTful APIs and microservices/reactive architectures
Perform code reviews
Write unit and integration tests
Participate in agile rituals and actively contribute to product evolution

Requirements

What you’ll need

Technical experience with Java and Python
Experience with Java 17/21 (LTS) and the Spring ecosystem (Spring Boot, Spring Framework)
Experience with Python 3.x and at least one web framework (FastAPI, Flask, or Django) — desirable familiarity with maintaining Python 2.x (legacy) applications
Experience with Vert.x or another reactive framework (Spring WebFlux/Reactor)
Experience with microservices, reactive architectures, and APIs
Experience developing RESTful APIs
Strong knowledge of Design Patterns, SOLID, TDD and BDD
Experience with Git/GitLab
Experience with messaging (SQS)
Experience with Maven/Gradle
**Desired:**
Degree in Information Security, Information Systems or related fields
Experience with credit products, anti-fraud, scoring or data bureau products
Experience with AWS (EKS, Lambda, DynamoDB, CloudWatch, CodePipeline)
Experience with containers (Docker, Docker Compose) and Kubernetes
Knowledge of NoSQL databases (DynamoDB, MongoDB) and caching (Redis)
Experience with Kafka and high-volume event/stream processing
Experience with observability (Grafana, Splunk) and testing (JUnit, Mockito)

Benefits

Comp & perks

Food allowance and/or meal voucher
Sesi and Sesc partnership providing access to health, wellness and leisure services
Partnerships with educational institutions offering exclusive discounts on courses and educational programs
Opportunity for career growth within the company and participation in strategic projects
Opportunity to work at a rapidly expanding company in the market