Senior Software Engineer

Fraud Deflect; Teletrabalho; BRL 160.000 - 200.000; Tempo integral

Resumo da oferta

A financial technology firm in Brazil is seeking an Expert Python Backend Engineer to design, build, and operate API-first systems for payments and chargeback automation. The ideal candidate will have proven experience in REST API development and a strong understanding of payment workflows. Responsibilities include leading project execution, API integrations, and contributing to DevOps practices. A client-facing role with ownership mentality is essential. The company values automation and performance optimization, particularly in a Linux environment.

Qualificações

• Strong typing, testing, concurrency fundamentals, and performance debugging skills.
• Experience with integrations and webhooks in REST API development.
• Knowledge of business logic for payments, disputes, chargebacks, and reconciliations.
• Ability to design and operate with a DevOps mindset.

Responsabilidades

• Lead project execution, including technical design and implementation plans.
• Build and operate REST APIs in Python, ensuring correctness and auditability.
• Own API integrations with external partners, managing onboarding and error handling.
• Contribute to DevOps practices including CI/CD pipelines and operational automation.

Conhecimentos

Expert Python backend engineer (3.12+ preferred)

Proven REST API development experience

Strong data structures and API data modeling skills

Experience in payments and fintech workflows

Comfortable on Linux servers

Client-facing technical communication

Ownership mentality and interest in leadership

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