Backend Developer

Osf Digital; Taboão da Serra; Presencial; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A digital transformation firm is seeking a skilled Back-end Developer to work within the Conversion Squad in São Paulo, Brazil. The role emphasizes back-end development using Kotlin and Spring Boot, along with opportunities to support front-end tasks using Next.js and Node.js. Responsibilities include building scalable microservices, ensuring performance, and collaborating in agile environments. Ideal candidates have strong communication skills, proficiency in back-end languages, and experience with automated testing and relational databases.

Qualificações

• Mandatory experience in Kotlin and Spring Boot.
• Proficiency in creating and maintaining scalable microservices.
• Strong knowledge of relational database management.

Responsabilidades

• Develop Back-end solutions ensuring functionality and performance.
• Implement microservices and REST APIs.
• Collaborate effectively with cross-functional teams.

Conhecimentos

Kotlin

Spring Boot

Microservices

REST APIs

Relational Databases

Agile methodologies

Ferramentas

Node.js

Kafka

Descrição da oferta de emprego

The professional will work primarily in the Conversion Squad, responsible for lead acquisition flows and marketing forms — a high‑impact and business‑critical area at Creditas. The main focus will be Back-end development using Kotlin + Spring Boot.

The developer may also support small tasks in Front-end / BFF applications built with Next.js and Node.js, collaborating closely with product and engineering teams.

Responsibilities

• Develop Back-end solutions ensuring functionality, maintainability, performance, and adherence to engineering best practices.
• Build services aligned with business strategy, OKRs, and product initiatives.
• Implement and maintain reliable and scalable microservices and REST APIs.
• Create automated tests following the testing pyramid.
• Work in a collaborative environment with pair programming and a strong feedback culture.
• Communicate clearly and proactively in daily meetings, agile ceremonies, and when raising blockers.
• Contribute to continuous improvement within the Conversion Squad projects.

Competencies

• Strong and active communication — especially during daily meetings.
• Proactive attitude in raising issues, proposing solutions, and seeking support when needed.
• Ability to collaborate effectively with cross‑functional teams (product, design, engineering).
• Organization and strong sense of ownership over deliverables.

Hard Skills — Mandatory (Must Have) :

• Proficiency in Kotlin and Spring Boot (top priority).
• Solid experience with microservices and REST API architecture.
• Strong knowledge of relational databases.
• Experience with automated testing and understanding of the testing pyramid.
• Experience with at least one other Back-end language : Java, Python, Ruby, Go (Kotlin is mandatory).
• Familiarity with agile methodologies (Scrum, Kanban).

Nice to Have :

• Experience with modern Front-end frameworks (React, Next.js, Angular, Vue.js).
• Knowledge of BFF using Node.js.
• Experience with messaging tools (Kafka, AWS SQS, etc.).
• Knowledge of Clean Code and Design Patterns.

Skill Set

• Kotlin + Spring Boot
• Microservices & Distributed Architecture
• REST APIs
• Relational Databases

Automated Testing

OSF Digital is proud to be an equal opportunity employer, where you can bring your whole self to work. Join an inclusive and passionate community of professionals who help bring about digital transformation for businesses around the world. At OSF Digital, we welcome all individuals and do not discriminate on the basis of gender identity and expression, race, ethnicity, disability, sexual orientation, color, religion, national origin, age, marital status, or any other protected category in any of the jurisdictions in which we conduct business.