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Backend Developer
Job summary
A digital transformation company is seeking a Back-end Developer to work in the Conversion Squad, focusing on lead acquisition and marketing flows. The role demands a high proficiency in Kotlin and Spring Boot, with responsibilities including developing scalable microservices, maintaining REST APIs, and collaborating effectively with cross-functional teams. The ideal candidate should possess solid skills in relational databases and experience with automated testing. Join a passionate professional community at an inclusive workplace in Brazil.
Qualifications
- Proficiency in Kotlin and Spring Boot is mandatory.
- Experience with microservices and REST API architecture is essential.
- Knowledge of relational databases is required.
Responsibilities
- Develop Back-end solutions ensuring functionality and performance.
- Build services aligned with business strategy and product initiatives.
- Communicate proactively in daily meetings.
Skills
Tools
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.
- 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.
- 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.
- 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).
- 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.
- Kotlin + Spring Boot
- Microservices & Distributed Architecture
- REST APIs
- Relational Databases
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.
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.