Senior Software Engineer

Fraud Deflect; Belém; Presencial; BRL 160.000 - 200.000; Tempo integral

Resumo da oferta

A leading fintech company in Brazil is seeking an experienced Python backend engineer to develop and operate API-first systems for payments and chargebacks. The ideal candidate will possess expertise in REST API development and strong data modeling skills, demonstrating a client-facing communication ability. This role involves leading projects, technical design execution, and contributing to operational automation with a DevOps mindset.

Qualificações

• Expert Python backend engineer with strong typing and performance debugging.
• Proven REST API development experience, including integrations and webhooks.
• Comfortable on Linux servers with a DevOps mindset and client-facing communication skills.

Responsabilidades

• Lead project execution, technical design, and delivery coordination.
• Build and operate REST APIs in Python and own API integrations with external partners.
• Contribute to DevOps practices such as CI/CD pipelines and operational automation.

Conhecimentos

Python

REST API development

Data modeling

Linux

DevOps practices

Client communication

Ferramentas

Docker

Kubernetes

Terraform

AWS

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