Backend Developer - Pleno

Osf Digital; Londrina; Teletrabalho; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A leading digital transformation company in Brazil is seeking a Backend Developer to design and maintain backend systems for machine learning features. This role requires expertise in Python and experience with RESTful APIs, as well as familiarity with AWS services and containerization technologies. Join a diverse and inclusive team working on innovative digital solutions.

Qualificações

• 2+ years of backend engineering experience with asynchronous Python.
• Experience in building production services and RESTful APIs.
• Familiarity with vector search systems like Milvus.

Responsabilidades

• Design and maintain backend systems for ML features.
• Optimize databases and manage containerized workflows.
• Mentor engineers and drive architectural decisions.

Conhecimentos

Python programming

Async programming

RESTful API development

Database management (Postgres, MongoDB)

Containerization (Docker, Kubernetes)

Ferramentas

FastAPI

uvicorn

Milvus

AWS services

CI/CD tools (Jenkins, GitHub Actions)

Descrição da oferta de emprego

Backend Developer - PlenoCollaborate with data scientists and ML engineers to understand requirements for ML / LLM features.

Design, implement, maintain, improve, and document backend systems (Python, FastAPI) for ML / LLM features.

Manage and optimize databases (Postgres, MongoDB, Milvus) for application storage.

Improve observability and reliability for distributed, async workloads (structured logging, metrics, retry / backoff strategies, traces).

Help maintain and orchestrate containerized development workflows (uv, Docker, Docker Compose, Kubernetes) and CI checks.

Raise the bar for testing (unit + integration) to ensure high code quality and reliability.

Improve the local development experience for the team by establishing and promoting Python-based development standards and best practices.

Integrate and optimize calls to LLM APIs (OpenAI) and agentic frameworks (OpenAI Agents SDK).

Mentor other engineers and drive architectural decisions.RequirementsExperience in backend engineering, specifically in building production services, with over 2 years of expertise in working with asynchronous Python.

Extensive Python knowledge : async / await, typing system, modern Pydantic (v2), and testing frameworks (pytest).

Production experience building RESTful APIs with FastAPI and ASGI servers (uvicorn).

Solid operational and debugging skills for async systems and distributed services.

Strong familiarity with Postgres and MongoDB databases.

Experience with vector search systems (Milvus, FAISS, Pinecone) and embedding pipelines.

Experience with message queues, background processing, and patterns for batch processing, idempotency, and retries.

Practical experience integrating with OpenAI or other LLM providers.

Comfortable working with containerization technologies (Docker, Docker Compose, Kubernetes).

Familiarity with AWS services (EKS, ECS, S3).

Familiarity with CI / CD pipelines (Jenkins, GitHub Actions).

Good communication skills and ability to work effectively in a remote team environment.

Good English proficiency (reading, writing, speaking).

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.