Senior Software Engineer

Fraud Deflect; Embu das Artes; Presencial; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A leading financial technology company in Brazil is seeking an experienced Python backend engineer to own and evolve critical payments and back-office services. This role involves designing, building, and operating API-first systems that automate complex workflows like disputes and chargebacks. You will lead project execution, ensuring strong technical design and successful API integrations, while working closely with clients. The ideal candidate has proven backend engineering experience, deep knowledge of REST APIs, and a strong grasp of data structures and modeling.

Qualificações

• Expert Python backend engineer (3.12+ preferred) with strong typing and performance debugging.
• Proven experience with REST API design and production operations.
• Experience implementing business logic in payments / fintech workflows.

Responsabilidades

• Lead project execution including technical design and code reviews.
• Build and operate REST APIs in Python.
• Own API integrations with external partners, handling errors and retries.

Conhecimentos

Expert Python backend engineering

REST API development experience

Strong data structures and modeling skills

Comfortable on Linux servers

Client-facing technical communication

Ferramentas

Docker

Kubernetes

Terraform

Amazon Web Services

Descrição da oferta de emprego

Language : Native / fluent English. Resumes in English.

About the role

Own and evolve critical payments / back‑office services end‑to‑end : design, build, ship, and operate API‑first Python systems that automate disputes / chargebacks and related workflows. You’ll partner directly with clients and internal teams to translate business rules into reliable integrations, services, and data models—leveraging Linux, with a pragmatic DevOps mindset.

Responsibilities

Lead project execution : technical design, implementation plans, code reviews, and delivery coordination.

Build and operate REST APIs in Python (versioning, idempotency, auth, webhooks, integrations).

Own API integrations with external partners / processors : onboarding, validation, retries, error handling, and SLAs.

Implement complex payments / chargeback business logic from requirements and client workflows; ensure correctness and auditability.

Model API / domain data with strong data‑structure fundamentals (schemas, invariants, normalization / denormalization tradeoffs).

Meet and maintain contact directly with clients.

Operate services on Linux : deployments, debugging, performance tuning, incident response, and reliability improvements.

Contribute to DevOps practices : CI / CD pipelines, safe rollouts, observability (logs / metrics / traces), and operational automation.

Required

Expert Python backend engineer (3.12+ preferred) : strong typing, testing, concurrency fundamentals, and performance debugging.

Proven REST API development experience (design + production operations), including integrations and webhooks.

Strong data structures and API data modeling skills (clear contracts, backward compatibility, validations).

Experience implementing business logic for payments / fintech workflows, especially disputes / chargebacks and reconciliations.

Comfortable on Linux servers with a DevOps mindset (deploy / run / debug production services; automate operational work).

Client‑facing technical communication : can interface with external stakeholders to clarify requirements, diagnose issues, and drive resolutions.

Ownership mentality and interest in leadership : drive the full lifecycle from discovery → design → build → operate.

Nice to have

Containerization / orchestration (Docker / Kubernetes), IaC (Terraform), and cloud‑native operations on Amazon Web Services.

Event‑driven / workflow systems (SQS / Kafka / Kinesis; Airflow / Prefect / Dagster).

Security / compliance exposure (PCI, SOC 2) and observability tooling at scale.

How to apply

Send an English resume and links to relevant work (repos, API docs, architectural notes, or write‑ups) showing :

Python backend API development + real‑world API integrations

Payments / disputes / chargebacks or similarly complex workflow automation